cmds/statsd/tests/metrics/ValueMetricProducer_test.cpp

// Copyright (C) 2017 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "src/metrics/ValueMetricProducer.h"

#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <math.h>
#include <stdio.h>

#include <vector>

#include "metrics_test_helper.h"
#include "src/matchers/SimpleLogMatchingTracker.h"
#include "src/metrics/MetricProducer.h"
#include "src/stats_log_util.h"
#include "tests/statsd_test_util.h"

using namespace testing;
using android::sp;
using std::make_shared;
using std::set;
using std::shared_ptr;
using std::unordered_map;
using std::vector;

#ifdef __ANDROID__

namespace android {
namespace os {
namespace statsd {

const ConfigKey kConfigKey(0, 12345);
const int tagId = 1;
const int64_t metricId = 123;
const int64_t atomMatcherId = 678;
const int logEventMatcherIndex = 0;
const int64_t bucketStartTimeNs = 10000000000;
const int64_t bucketSizeNs = TimeUnitToBucketSizeInMillis(ONE_MINUTE) * 1000000LL;
const int64_t bucket2StartTimeNs = bucketStartTimeNs + bucketSizeNs;
const int64_t bucket3StartTimeNs = bucketStartTimeNs + 2 * bucketSizeNs;
const int64_t bucket4StartTimeNs = bucketStartTimeNs + 3 * bucketSizeNs;
const int64_t bucket5StartTimeNs = bucketStartTimeNs + 4 * bucketSizeNs;
const int64_t bucket6StartTimeNs = bucketStartTimeNs + 5 * bucketSizeNs;
double epsilon = 0.001;

static void assertPastBucketValuesSingleKey(
        const std::unordered_map<MetricDimensionKey, std::vector<ValueBucket>>& mPastBuckets,
        const std::initializer_list<int>& expectedValuesList,
        const std::initializer_list<int64_t>& expectedDurationNsList) {
    std::vector<int> expectedValues(expectedValuesList);
    std::vector<int64_t> expectedDurationNs(expectedDurationNsList);
    ASSERT_EQ(expectedValues.size(), expectedDurationNs.size());
    if (expectedValues.size() == 0) {
        ASSERT_EQ(0, mPastBuckets.size());
        return;
    }

    ASSERT_EQ(1, mPastBuckets.size());
    ASSERT_EQ(expectedValues.size(), mPastBuckets.begin()->second.size());

    auto buckets = mPastBuckets.begin()->second;
    for (int i = 0; i < expectedValues.size(); i++) {
        EXPECT_EQ(expectedValues[i], buckets[i].values[0].long_value)
                << "Values differ at index " << i;
        EXPECT_EQ(expectedDurationNs[i], buckets[i].mConditionTrueNs)
                << "Condition duration value differ at index " << i;
    }
}

class ValueMetricProducerTestHelper {

 public:
    static shared_ptr<LogEvent> createEvent(int64_t eventTimeNs, int64_t value) {
        shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, eventTimeNs);
        event->write(tagId);
        event->write(value);
        event->write(value);
        event->init();
        return event;
    }

    static sp<ValueMetricProducer> createValueProducerNoConditions(
            sp<MockStatsPullerManager>& pullerManager, ValueMetric& metric) {
        UidMap uidMap;
        SimpleAtomMatcher atomMatcher;
        atomMatcher.set_atom_id(tagId);
        sp<EventMatcherWizard> eventMatcherWizard =
                new EventMatcherWizard({new SimpleLogMatchingTracker(
                        atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
        sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
        EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
        EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

        sp<ValueMetricProducer> valueProducer = new ValueMetricProducer(
                kConfigKey, metric, -1 /*-1 meaning no condition*/, wizard,
                logEventMatcherIndex, eventMatcherWizard, tagId,
                bucketStartTimeNs, bucketStartTimeNs, pullerManager);
        return valueProducer;
    }

    static sp<ValueMetricProducer> createValueProducerWithCondition(
            sp<MockStatsPullerManager>& pullerManager, ValueMetric& metric) {
        UidMap uidMap;
        SimpleAtomMatcher atomMatcher;
        atomMatcher.set_atom_id(tagId);
        sp<EventMatcherWizard> eventMatcherWizard =
                new EventMatcherWizard({new SimpleLogMatchingTracker(
                        atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
        sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
        EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
        EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

        sp<ValueMetricProducer> valueProducer =
                new ValueMetricProducer(kConfigKey, metric, 1, wizard, logEventMatcherIndex,
                                        eventMatcherWizard, tagId, bucketStartTimeNs,
                                        bucketStartTimeNs, pullerManager);
        valueProducer->mCondition = ConditionState::kFalse;
        return valueProducer;
    }

    static sp<ValueMetricProducer> createValueProducerWithNoInitialCondition(
            sp<MockStatsPullerManager>& pullerManager, ValueMetric& metric) {
        UidMap uidMap;
        SimpleAtomMatcher atomMatcher;
        atomMatcher.set_atom_id(tagId);
        sp<EventMatcherWizard> eventMatcherWizard =
                new EventMatcherWizard({new SimpleLogMatchingTracker(
                        atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
        sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
        EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
        EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

        sp<ValueMetricProducer> valueProducer = new ValueMetricProducer(
                kConfigKey, metric, 1, wizard, logEventMatcherIndex, eventMatcherWizard, tagId,
                bucketStartTimeNs, bucketStartTimeNs, pullerManager);
        return valueProducer;
    }

    static ValueMetric createMetric() {
        ValueMetric metric;
        metric.set_id(metricId);
        metric.set_bucket(ONE_MINUTE);
        metric.mutable_value_field()->set_field(tagId);
        metric.mutable_value_field()->add_child()->set_field(2);
        metric.set_max_pull_delay_sec(INT_MAX);
        return metric;
    }

    static ValueMetric createMetricWithCondition() {
        ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
        metric.set_condition(StringToId("SCREEN_ON"));
        return metric;
    }
};


/*
 * Tests that the first bucket works correctly
 */
TEST(ValueMetricProducerTest, TestCalcPreviousBucketEndTime) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    int64_t startTimeBase = 11;
    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    // statsd started long ago.
    // The metric starts in the middle of the bucket
    ValueMetricProducer valueProducer(kConfigKey, metric, -1 /*-1 meaning no condition*/, wizard,
                                      logEventMatcherIndex, eventMatcherWizard, -1, startTimeBase,
                                      22, pullerManager);

    EXPECT_EQ(startTimeBase, valueProducer.calcPreviousBucketEndTime(60 * NS_PER_SEC + 10));
    EXPECT_EQ(startTimeBase, valueProducer.calcPreviousBucketEndTime(60 * NS_PER_SEC + 10));
    EXPECT_EQ(60 * NS_PER_SEC + startTimeBase,
              valueProducer.calcPreviousBucketEndTime(2 * 60 * NS_PER_SEC));
    EXPECT_EQ(2 * 60 * NS_PER_SEC + startTimeBase,
              valueProducer.calcPreviousBucketEndTime(3 * 60 * NS_PER_SEC));
}

/*
 * Tests that the first bucket works correctly
 */
TEST(ValueMetricProducerTest, TestFirstBucket) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    // statsd started long ago.
    // The metric starts in the middle of the bucket
    ValueMetricProducer valueProducer(kConfigKey, metric, -1 /*-1 meaning no condition*/, wizard,
                                      logEventMatcherIndex, eventMatcherWizard, -1, 5,
                                      600 * NS_PER_SEC + NS_PER_SEC / 2, pullerManager);

    EXPECT_EQ(600500000000, valueProducer.mCurrentBucketStartTimeNs);
    EXPECT_EQ(10, valueProducer.mCurrentBucketNum);
    EXPECT_EQ(660000000005, valueProducer.getCurrentBucketEndTimeNs());
}

/*
 * Tests pulled atoms with no conditions
 */
TEST(ValueMetricProducerTest, TestPulledEventsNoCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(11);
    event->init();
    allData.push_back(event);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(11, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(8, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(8, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event->write(tagId);
    event->write(23);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(23, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(12, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(2UL, valueProducer->mPastBuckets.begin()->second.size());
    EXPECT_EQ(8, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);
    EXPECT_EQ(12, valueProducer->mPastBuckets.begin()->second.back().values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second.back().mConditionTrueNs);

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1);
    event->write(tagId);
    event->write(36);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket4StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(36, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(13, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(3UL, valueProducer->mPastBuckets.begin()->second.size());
    EXPECT_EQ(8, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);
    EXPECT_EQ(12, valueProducer->mPastBuckets.begin()->second[1].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[1].mConditionTrueNs);
    EXPECT_EQ(13, valueProducer->mPastBuckets.begin()->second[2].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[2].mConditionTrueNs);
}

TEST(ValueMetricProducerTest, TestPartialBucketCreated) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initialize bucket.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
                event->write(tagId);
                event->write(1);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Partial bucket.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 10);
                event->write(tagId);
                event->write(5);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    // First bucket ends.
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 10);
    event->write(tagId);
    event->write(2);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** success */ true, bucket2StartTimeNs);

    // Partial buckets created in 2nd bucket.
    valueProducer->notifyAppUpgrade(bucket2StartTimeNs + 2, "com.foo", 10000, 1);

    // One full bucket and one partial bucket.
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    vector<ValueBucket> buckets = valueProducer->mPastBuckets.begin()->second;
    EXPECT_EQ(2UL, buckets.size());
    // Full bucket (2 - 1)
    EXPECT_EQ(1, buckets[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, buckets[0].mConditionTrueNs);
    // Full bucket (5 - 3)
    EXPECT_EQ(3, buckets[1].values[0].long_value);
    // partial bucket [bucket2StartTimeNs, bucket2StartTimeNs + 2]
    EXPECT_EQ(2, buckets[1].mConditionTrueNs);
}

/*
 * Tests pulled atoms with filtering
 */
TEST(ValueMetricProducerTest, TestPulledEventsWithFiltering) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    auto keyValue = atomMatcher.add_field_value_matcher();
    keyValue->set_field(1);
    keyValue->set_eq_int(3);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(3);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer = new ValueMetricProducer(
            kConfigKey, metric, -1 /*-1 meaning no condition*/, wizard,
            logEventMatcherIndex, eventMatcherWizard, tagId,
            bucketStartTimeNs, bucketStartTimeNs, pullerManager);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(3);
    event->write(11);
    event->init();
    allData.push_back(event);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(11, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(8, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(8, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event->write(4);
    event->write(23);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    // No new data seen, so data has been cleared.
    EXPECT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(11, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(8, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(8, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1);
    event->write(3);
    event->write(36);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket4StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];

    // the base was reset
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(36, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.begin()->second.size());
    EXPECT_EQ(8, valueProducer->mPastBuckets.begin()->second.back().values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second.back().mConditionTrueNs);
}

/*
 * Tests pulled atoms with no conditions and take absolute value after reset
 */
TEST(ValueMetricProducerTest, TestPulledEventsTakeAbsoluteValueOnReset) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_use_absolute_value_on_reset(true);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _)).WillOnce(Return(true));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(11);
    event->init();
    allData.push_back(event);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(11, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event->write(tagId);
    event->write(10);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(10, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(10, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(10, valueProducer->mPastBuckets.begin()->second.back().values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second.back().mConditionTrueNs);

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1);
    event->write(tagId);
    event->write(36);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket4StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(36, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(26, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(2UL, valueProducer->mPastBuckets.begin()->second.size());
    EXPECT_EQ(10, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);
    EXPECT_EQ(26, valueProducer->mPastBuckets.begin()->second[1].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[1].mConditionTrueNs);
}

/*
 * Tests pulled atoms with no conditions and take zero value after reset
 */
TEST(ValueMetricProducerTest, TestPulledEventsTakeZeroOnReset) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _)).WillOnce(Return(false));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(11);
    event->init();
    allData.push_back(event);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];

    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(11, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event->write(tagId);
    event->write(10);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(10, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1);
    event->write(tagId);
    event->write(36);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket4StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(36, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(26, curInterval.value.long_value);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    EXPECT_EQ(26, valueProducer->mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, valueProducer->mPastBuckets.begin()->second[0].mConditionTrueNs);
}

/*
 * Test pulled event with non sliced condition.
 */
TEST(ValueMetricProducerTest, TestEventsWithNonSlicedCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
                event->write(tagId);
                event->write(130);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
                event->write(tagId);
                event->write(180);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    // startUpdated:false sum:0 start:100
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(100, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(1);
    event->write(110);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {10}, {bucketSizeNs - 8});

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(110, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(10, curInterval.value.long_value);

    valueProducer->onConditionChanged(false, bucket2StartTimeNs + 1);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {10}, {bucketSizeNs - 8});

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(20, curInterval.value.long_value);
    EXPECT_EQ(false, curInterval.hasBase);

    valueProducer->onConditionChanged(true, bucket3StartTimeNs + 1);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {10, 20}, {bucketSizeNs - 8, 1});
}

TEST(ValueMetricProducerTest, TestPushedEventsWithUpgrade) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());

    valueProducer.notifyAppUpgrade(bucketStartTimeNs + 150, "ANY.APP", 1, 1);
    EXPECT_EQ(1UL, valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucketStartTimeNs + 150, valueProducer.mCurrentBucketStartTimeNs);

    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 59 * NS_PER_SEC);
    event2->write(1);
    event2->write(10);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);
    EXPECT_EQ(1UL, valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucketStartTimeNs + 150, valueProducer.mCurrentBucketStartTimeNs);

    // Next value should create a new bucket.
    shared_ptr<LogEvent> event3 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 65 * NS_PER_SEC);
    event3->write(1);
    event3->write(10);
    event3->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event3);
    EXPECT_EQ(2UL, valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucketStartTimeNs + bucketSizeNs, valueProducer.mCurrentBucketStartTimeNs);
}

TEST(ValueMetricProducerTest, TestPulledValueWithUpgrade) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Return(true))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 149);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }));
    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, tagId, bucketStartTimeNs,
                                      bucketStartTimeNs, pullerManager);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(100);
    event->init();
    allData.push_back(event);

    valueProducer.onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());

    valueProducer.notifyAppUpgrade(bucket2StartTimeNs + 150, "ANY.APP", 1, 1);
    EXPECT_EQ(1UL, valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucket2StartTimeNs + 150, valueProducer.mCurrentBucketStartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {20}, {150});

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event->write(tagId);
    event->write(150);
    event->init();
    allData.push_back(event);
    valueProducer.onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    EXPECT_EQ(2UL, valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucket3StartTimeNs, valueProducer.mCurrentBucketStartTimeNs);
    EXPECT_EQ(20L,
              valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY][0].values[0].long_value);
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {20, 30},
                                    {150, bucketSizeNs - 150});
}

TEST(ValueMetricProducerTest, TestPulledWithAppUpgradeDisabled) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_split_bucket_for_app_upgrade(false);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, Pull(tagId, _)).WillOnce(Return(true));
    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, tagId, bucketStartTimeNs,
                                      bucketStartTimeNs, pullerManager);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(100);
    event->init();
    allData.push_back(event);

    valueProducer.onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());

    valueProducer.notifyAppUpgrade(bucket2StartTimeNs + 150, "ANY.APP", 1, 1);
    EXPECT_EQ(0UL, valueProducer.mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucket2StartTimeNs, valueProducer.mCurrentBucketStartTimeNs);
}

TEST(ValueMetricProducerTest, TestPulledValueWithUpgradeWhileConditionFalse) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs - 100);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 1);

    valueProducer->onConditionChanged(false, bucket2StartTimeNs-100);
    EXPECT_FALSE(valueProducer->mCondition);

    valueProducer->notifyAppUpgrade(bucket2StartTimeNs-50, "ANY.APP", 1, 1);
    // Expect one full buckets already done and starting a partial bucket.
    EXPECT_EQ(bucket2StartTimeNs-50, valueProducer->mCurrentBucketStartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY].size());
    EXPECT_EQ(bucketStartTimeNs,
              valueProducer->mPastBuckets[DEFAULT_METRIC_DIMENSION_KEY][0].mBucketStartNs);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20},
                                    {(bucket2StartTimeNs - 100) - (bucketStartTimeNs + 1)});
    EXPECT_FALSE(valueProducer->mCondition);
}

TEST(ValueMetricProducerTest, TestPushedEventsWithoutCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
    event2->write(1);
    event2->write(20);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(10, curInterval.value.long_value);
    EXPECT_EQ(true, curInterval.hasValue);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(30, curInterval.value.long_value);

    valueProducer.flushIfNeededLocked(bucket2StartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {30}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestPushedEventsWithCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, 1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);
    valueProducer.mCondition = ConditionState::kFalse;

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has 1 slice
    EXPECT_EQ(0UL, valueProducer.mCurrentSlicedBucket.size());

    valueProducer.onConditionChangedLocked(true, bucketStartTimeNs + 15);
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
    event2->write(1);
    event2->write(20);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer.mCurrentSlicedBucket.begin()->second[0];
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(20, curInterval.value.long_value);

    shared_ptr<LogEvent> event3 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 30);
    event3->write(1);
    event3->write(30);
    event3->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event3);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(50, curInterval.value.long_value);

    valueProducer.onConditionChangedLocked(false, bucketStartTimeNs + 35);
    shared_ptr<LogEvent> event4 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 40);
    event4->write(1);
    event4->write(40);
    event4->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event4);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(50, curInterval.value.long_value);

    valueProducer.flushIfNeededLocked(bucket2StartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {50}, {20});
}

TEST(ValueMetricProducerTest, TestAnomalyDetection) {
    sp<AlarmMonitor> alarmMonitor;
    Alert alert;
    alert.set_id(101);
    alert.set_metric_id(metricId);
    alert.set_trigger_if_sum_gt(130);
    alert.set_num_buckets(2);
    const int32_t refPeriodSec = 3;
    alert.set_refractory_period_secs(refPeriodSec);

    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    ValueMetricProducer valueProducer(kConfigKey, metric, -1 /*-1 meaning no condition*/, wizard,
                                      logEventMatcherIndex, eventMatcherWizard, -1 /*not pulled*/,
                                      bucketStartTimeNs, bucketStartTimeNs, pullerManager);

    sp<AnomalyTracker> anomalyTracker = valueProducer.addAnomalyTracker(alert, alarmMonitor);


    shared_ptr<LogEvent> event1
            = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1 * NS_PER_SEC);
    event1->write(161);
    event1->write(10); // value of interest
    event1->init();
    shared_ptr<LogEvent> event2
            = make_shared<LogEvent>(tagId, bucketStartTimeNs + 2 + NS_PER_SEC);
    event2->write(162);
    event2->write(20); // value of interest
    event2->init();
    shared_ptr<LogEvent> event3
            = make_shared<LogEvent>(tagId, bucketStartTimeNs + 2 * bucketSizeNs + 1 * NS_PER_SEC);
    event3->write(163);
    event3->write(130); // value of interest
    event3->init();
    shared_ptr<LogEvent> event4
            = make_shared<LogEvent>(tagId, bucketStartTimeNs + 3 * bucketSizeNs + 1 * NS_PER_SEC);
    event4->write(35);
    event4->write(1); // value of interest
    event4->init();
    shared_ptr<LogEvent> event5
            = make_shared<LogEvent>(tagId, bucketStartTimeNs + 3 * bucketSizeNs + 2 * NS_PER_SEC);
    event5->write(45);
    event5->write(150); // value of interest
    event5->init();
    shared_ptr<LogEvent> event6
            = make_shared<LogEvent>(tagId, bucketStartTimeNs + 3 * bucketSizeNs + 10 * NS_PER_SEC);
    event6->write(25);
    event6->write(160); // value of interest
    event6->init();

    // Two events in bucket #0.
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);
    // Value sum == 30 <= 130.
    EXPECT_EQ(anomalyTracker->getRefractoryPeriodEndsSec(DEFAULT_METRIC_DIMENSION_KEY), 0U);

    // One event in bucket #2. No alarm as bucket #0 is trashed out.
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event3);
    // Value sum == 130 <= 130.
    EXPECT_EQ(anomalyTracker->getRefractoryPeriodEndsSec(DEFAULT_METRIC_DIMENSION_KEY), 0U);

    // Three events in bucket #3.
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event4);
    // Anomaly at event 4 since Value sum == 131 > 130!
    EXPECT_EQ(anomalyTracker->getRefractoryPeriodEndsSec(DEFAULT_METRIC_DIMENSION_KEY),
            std::ceil(1.0 * event4->GetElapsedTimestampNs() / NS_PER_SEC + refPeriodSec));
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event5);
    // Event 5 is within 3 sec refractory period. Thus last alarm timestamp is still event4.
    EXPECT_EQ(anomalyTracker->getRefractoryPeriodEndsSec(DEFAULT_METRIC_DIMENSION_KEY),
            std::ceil(1.0 * event4->GetElapsedTimestampNs() / NS_PER_SEC + refPeriodSec));

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event6);
    // Anomaly at event 6 since Value sum == 160 > 130 and after refractory period.
    EXPECT_EQ(anomalyTracker->getRefractoryPeriodEndsSec(DEFAULT_METRIC_DIMENSION_KEY),
            std::ceil(1.0 * event6->GetElapsedTimestampNs() / NS_PER_SEC + refPeriodSec));
}

// Test value metric no condition, the pull on bucket boundary come in time and too late
TEST(ValueMetricProducerTest, TestBucketBoundaryNoCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _)).WillOnce(Return(true));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    // pull 1
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(11);
    event->init();
    allData.push_back(event);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];

    // startUpdated:true sum:0 start:11
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(11, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    // pull 2 at correct time
    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event->write(tagId);
    event->write(23);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    // tartUpdated:false sum:12
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(23, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {12}, {bucketSizeNs});

    // pull 3 come late.
    // The previous bucket gets closed with error. (Has start value 23, no ending)
    // Another bucket gets closed with error. (No start, but ending with 36)
    // The new bucket is back to normal.
    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket6StartTimeNs + 1);
    event->write(tagId);
    event->write(36);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket6StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    // startUpdated:false sum:12
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(36, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {12}, {bucketSizeNs});
}

/*
 * Test pulled event with non sliced condition. The pull on boundary come late because the alarm
 * was delivered late.
 */
TEST(ValueMetricProducerTest, TestBucketBoundaryWithCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // condition becomes true
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }))
            // condition becomes false
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(100, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    // pull on bucket boundary come late, condition change happens before it
    valueProducer->onConditionChanged(false, bucket2StartTimeNs + 1);
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20}, {bucketSizeNs - 8});
    EXPECT_EQ(false, curInterval.hasBase);

    // Now the alarm is delivered.
    // since the condition turned to off before this pull finish, it has no effect
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 30, 110));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20}, {bucketSizeNs - 8});
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
}

/*
 * Test pulled event with non sliced condition. The pull on boundary come late, after the condition
 * change to false, and then true again. This is due to alarm delivered late.
 */
TEST(ValueMetricProducerTest, TestBucketBoundaryWithCondition2) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // condition becomes true
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }))
            // condition becomes false
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }))
            // condition becomes true again
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 25);
                event->write(tagId);
                event->write(130);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    // startUpdated:false sum:0 start:100
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(100, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    // pull on bucket boundary come late, condition change happens before it
    valueProducer->onConditionChanged(false, bucket2StartTimeNs + 1);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20}, {bucketSizeNs - 8});
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);

    // condition changed to true again, before the pull alarm is delivered
    valueProducer->onConditionChanged(true, bucket2StartTimeNs + 25);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20}, {bucketSizeNs - 8});
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(130, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);

    // Now the alarm is delivered, but it is considered late, the data will be used
    // for the new bucket since it was just pulled.
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 50, 140));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs + 50);

    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(140, curInterval.base.long_value);
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(10, curInterval.value.long_value);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20}, {bucketSizeNs - 8});

    allData.clear();
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket3StartTimeNs, 160));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20, 30},
                                    {bucketSizeNs - 8, bucketSizeNs - 24});
}

TEST(ValueMetricProducerTest, TestPushedAggregateMin) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_aggregation_type(ValueMetric::MIN);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
    event2->write(1);
    event2->write(20);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(10, curInterval.value.long_value);
    EXPECT_EQ(true, curInterval.hasValue);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(10, curInterval.value.long_value);

    valueProducer.flushIfNeededLocked(bucket2StartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {10}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestPushedAggregateMax) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_aggregation_type(ValueMetric::MAX);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
    event2->write(1);
    event2->write(20);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(10, curInterval.value.long_value);
    EXPECT_EQ(true, curInterval.hasValue);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(20, curInterval.value.long_value);

    valueProducer.flushIfNeededLocked(bucket3StartTimeNs);
    /* EXPECT_EQ(1UL, valueProducer.mPastBuckets.size()); */
    /* EXPECT_EQ(1UL, valueProducer.mPastBuckets.begin()->second.size()); */
    /* EXPECT_EQ(20, valueProducer.mPastBuckets.begin()->second.back().values[0].long_value); */
}

TEST(ValueMetricProducerTest, TestPushedAggregateAvg) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_aggregation_type(ValueMetric::AVG);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
    event2->write(1);
    event2->write(15);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval;
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(10, curInterval.value.long_value);
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(1, curInterval.sampleSize);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(25, curInterval.value.long_value);
    EXPECT_EQ(2, curInterval.sampleSize);

    valueProducer.flushIfNeededLocked(bucket2StartTimeNs);
    EXPECT_EQ(1UL, valueProducer.mPastBuckets.size());
    EXPECT_EQ(1UL, valueProducer.mPastBuckets.begin()->second.size());

    EXPECT_TRUE(std::abs(valueProducer.mPastBuckets.begin()->second.back().values[0].double_value -
                         12.5) < epsilon);
}

TEST(ValueMetricProducerTest, TestPushedAggregateSum) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_aggregation_type(ValueMetric::SUM);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
    event2->write(1);
    event2->write(15);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(10, curInterval.value.long_value);
    EXPECT_EQ(true, curInterval.hasValue);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(25, curInterval.value.long_value);

    valueProducer.flushIfNeededLocked(bucket2StartTimeNs);
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {25}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestSkipZeroDiffOutput) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_aggregation_type(ValueMetric::MIN);
    metric.set_use_diff(true);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 15);
    event2->write(1);
    event2->write(15);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(10, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(5, curInterval.value.long_value);

    // no change in data.
    shared_ptr<LogEvent> event3 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 10);
    event3->write(1);
    event3->write(15);
    event3->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event3);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(15, curInterval.base.long_value);
    EXPECT_EQ(true, curInterval.hasValue);

    shared_ptr<LogEvent> event4 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 15);
    event4->write(1);
    event4->write(15);
    event4->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event4);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(15, curInterval.base.long_value);
    EXPECT_EQ(true, curInterval.hasValue);

    valueProducer.flushIfNeededLocked(bucket3StartTimeNs);
    EXPECT_EQ(1UL, valueProducer.mPastBuckets.size());
    EXPECT_EQ(1UL, valueProducer.mPastBuckets.begin()->second.size());
    assertPastBucketValuesSingleKey(valueProducer.mPastBuckets, {5}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestSkipZeroDiffOutputMultiValue) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.mutable_value_field()->add_child()->set_field(3);
    metric.set_aggregation_type(ValueMetric::MIN);
    metric.set_use_diff(true);

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, -1, bucketStartTimeNs, bucketStartTimeNs,
                                      pullerManager);

    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
    event1->write(1);
    event1->write(10);
    event1->write(20);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucketStartTimeNs + 15);
    event2->write(1);
    event2->write(15);
    event2->write(22);
    event2->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event1);
    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval0 =
        valueProducer.mCurrentSlicedBucket.begin()->second[0];
    ValueMetricProducer::Interval curInterval1 =
        valueProducer.mCurrentSlicedBucket.begin()->second[1];
    EXPECT_EQ(true, curInterval0.hasBase);
    EXPECT_EQ(10, curInterval0.base.long_value);
    EXPECT_EQ(false, curInterval0.hasValue);
    EXPECT_EQ(true, curInterval1.hasBase);
    EXPECT_EQ(20, curInterval1.base.long_value);
    EXPECT_EQ(false, curInterval1.hasValue);

    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event2);

    // has one slice
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval0 = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    curInterval1 = valueProducer.mCurrentSlicedBucket.begin()->second[1];
    EXPECT_EQ(true, curInterval0.hasValue);
    EXPECT_EQ(5, curInterval0.value.long_value);
    EXPECT_EQ(true, curInterval1.hasValue);
    EXPECT_EQ(2, curInterval1.value.long_value);

    // no change in first value field
    shared_ptr<LogEvent> event3 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 10);
    event3->write(1);
    event3->write(15);
    event3->write(25);
    event3->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event3);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval0 = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    curInterval1 = valueProducer.mCurrentSlicedBucket.begin()->second[1];
    EXPECT_EQ(true, curInterval0.hasBase);
    EXPECT_EQ(15, curInterval0.base.long_value);
    EXPECT_EQ(true, curInterval0.hasValue);
    EXPECT_EQ(true, curInterval1.hasBase);
    EXPECT_EQ(25, curInterval1.base.long_value);
    EXPECT_EQ(true, curInterval1.hasValue);

    shared_ptr<LogEvent> event4 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 15);
    event4->write(1);
    event4->write(15);
    event4->write(29);
    event4->init();
    valueProducer.onMatchedLogEvent(1 /*log matcher index*/, *event4);
    EXPECT_EQ(1UL, valueProducer.mCurrentSlicedBucket.size());
    curInterval0 = valueProducer.mCurrentSlicedBucket.begin()->second[0];
    curInterval1 = valueProducer.mCurrentSlicedBucket.begin()->second[1];
    EXPECT_EQ(true, curInterval0.hasBase);
    EXPECT_EQ(15, curInterval0.base.long_value);
    EXPECT_EQ(true, curInterval0.hasValue);
    EXPECT_EQ(true, curInterval1.hasBase);
    EXPECT_EQ(29, curInterval1.base.long_value);
    EXPECT_EQ(true, curInterval1.hasValue);

    valueProducer.flushIfNeededLocked(bucket3StartTimeNs);

    EXPECT_EQ(1UL, valueProducer.mPastBuckets.size());
    EXPECT_EQ(2UL, valueProducer.mPastBuckets.begin()->second.size());
    EXPECT_EQ(2UL, valueProducer.mPastBuckets.begin()->second[0].values.size());
    EXPECT_EQ(1UL, valueProducer.mPastBuckets.begin()->second[1].values.size());

    EXPECT_EQ(bucketSizeNs, valueProducer.mPastBuckets.begin()->second[0].mConditionTrueNs);
    EXPECT_EQ(5, valueProducer.mPastBuckets.begin()->second[0].values[0].long_value);
    EXPECT_EQ(0, valueProducer.mPastBuckets.begin()->second[0].valueIndex[0]);
    EXPECT_EQ(2, valueProducer.mPastBuckets.begin()->second[0].values[1].long_value);
    EXPECT_EQ(1, valueProducer.mPastBuckets.begin()->second[0].valueIndex[1]);

    EXPECT_EQ(bucketSizeNs, valueProducer.mPastBuckets.begin()->second[1].mConditionTrueNs);
    EXPECT_EQ(3, valueProducer.mPastBuckets.begin()->second[1].values[0].long_value);
    EXPECT_EQ(1, valueProducer.mPastBuckets.begin()->second[1].valueIndex[0]);
}

/*
 * Tests zero default base.
 */
TEST(ValueMetricProducerTest, TestUseZeroDefaultBase) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.mutable_dimensions_in_what()->set_field(tagId);
    metric.mutable_dimensions_in_what()->add_child()->set_field(1);
    metric.set_use_zero_default_base(true);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(1);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    auto iter = valueProducer->mCurrentSlicedBucket.begin();
    auto& interval1 = iter->second[0];
    EXPECT_EQ(1, iter->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval1.hasBase);
    EXPECT_EQ(3, interval1.base.long_value);
    EXPECT_EQ(false, interval1.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());
    vector<shared_ptr<LogEvent>> allData;

    allData.clear();
    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event1->write(2);
    event1->write(4);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event2->write(1);
    event2->write(11);
    event2->init();
    allData.push_back(event1);
    allData.push_back(event2);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(2UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(true, interval1.hasBase);
    EXPECT_EQ(11, interval1.base.long_value);
    EXPECT_EQ(false, interval1.hasValue);
    EXPECT_EQ(8, interval1.value.long_value);

    auto it = valueProducer->mCurrentSlicedBucket.begin();
    for (; it != valueProducer->mCurrentSlicedBucket.end(); it++) {
        if (it != iter) {
            break;
        }
    }
    EXPECT_TRUE(it != iter);
    auto& interval2 = it->second[0];
    EXPECT_EQ(2, it->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval2.hasBase);
    EXPECT_EQ(4, interval2.base.long_value);
    EXPECT_EQ(false, interval2.hasValue);
    EXPECT_EQ(4, interval2.value.long_value);

    EXPECT_EQ(2UL, valueProducer->mPastBuckets.size());
    auto iterator = valueProducer->mPastBuckets.begin();
    EXPECT_EQ(bucketSizeNs, iterator->second[0].mConditionTrueNs);
    EXPECT_EQ(8, iterator->second[0].values[0].long_value);
    iterator++;
    EXPECT_EQ(bucketSizeNs, iterator->second[0].mConditionTrueNs);
    EXPECT_EQ(4, iterator->second[0].values[0].long_value);
}

/*
 * Tests using zero default base with failed pull.
 */
TEST(ValueMetricProducerTest, TestUseZeroDefaultBaseWithPullFailures) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.mutable_dimensions_in_what()->set_field(tagId);
    metric.mutable_dimensions_in_what()->add_child()->set_field(1);
    metric.set_use_zero_default_base(true);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(1);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    auto iter = valueProducer->mCurrentSlicedBucket.begin();
    auto& interval1 = iter->second[0];
    EXPECT_EQ(1, iter->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval1.hasBase);
    EXPECT_EQ(3, interval1.base.long_value);
    EXPECT_EQ(false, interval1.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());
    vector<shared_ptr<LogEvent>> allData;

    allData.clear();
    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event1->write(2);
    event1->write(4);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event2->write(1);
    event2->write(11);
    event2->init();
    allData.push_back(event1);
    allData.push_back(event2);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(2UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(true, interval1.hasBase);
    EXPECT_EQ(11, interval1.base.long_value);
    EXPECT_EQ(false, interval1.hasValue);
    EXPECT_EQ(8, interval1.value.long_value);

    auto it = valueProducer->mCurrentSlicedBucket.begin();
    for (; it != valueProducer->mCurrentSlicedBucket.end(); it++) {
        if (it != iter) {
            break;
        }
    }
    EXPECT_TRUE(it != iter);
    auto& interval2 = it->second[0];
    EXPECT_EQ(2, it->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval2.hasBase);
    EXPECT_EQ(4, interval2.base.long_value);
    EXPECT_EQ(false, interval2.hasValue);
    EXPECT_EQ(4, interval2.value.long_value);
    EXPECT_EQ(2UL, valueProducer->mPastBuckets.size());

    // next pull somehow did not happen, skip to end of bucket 3
    allData.clear();
    event1 = make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1);
    event1->write(2);
    event1->write(5);
    event1->init();
    allData.push_back(event1);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket4StartTimeNs);

    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(true, interval2.hasBase);
    EXPECT_EQ(5, interval2.base.long_value);
    EXPECT_EQ(false, interval2.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);
    EXPECT_EQ(2UL, valueProducer->mPastBuckets.size());

    allData.clear();
    event1 = make_shared<LogEvent>(tagId, bucket5StartTimeNs + 1);
    event1->write(2);
    event1->write(13);
    event1->init();
    allData.push_back(event1);
    event2 = make_shared<LogEvent>(tagId, bucket5StartTimeNs + 1);
    event2->write(1);
    event2->write(5);
    event2->init();
    allData.push_back(event2);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket5StartTimeNs);

    EXPECT_EQ(2UL, valueProducer->mCurrentSlicedBucket.size());
    auto it1 = std::next(valueProducer->mCurrentSlicedBucket.begin())->second[0];
    EXPECT_EQ(true, it1.hasBase);
    EXPECT_EQ(13, it1.base.long_value);
    EXPECT_EQ(false, it1.hasValue);
    EXPECT_EQ(8, it1.value.long_value);
    auto it2 = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, it2.hasBase);
    EXPECT_EQ(5, it2.base.long_value);
    EXPECT_EQ(false, it2.hasValue);
    EXPECT_EQ(5, it2.value.long_value);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);
    EXPECT_EQ(2UL, valueProducer->mPastBuckets.size());
}

/*
 * Tests trim unused dimension key if no new data is seen in an entire bucket.
 */
TEST(ValueMetricProducerTest, TestTrimUnusedDimensionKey) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.mutable_dimensions_in_what()->set_field(tagId);
    metric.mutable_dimensions_in_what()->add_child()->set_field(1);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(1);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    auto iter = valueProducer->mCurrentSlicedBucket.begin();
    auto& interval1 = iter->second[0];
    EXPECT_EQ(1, iter->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval1.hasBase);
    EXPECT_EQ(3, interval1.base.long_value);
    EXPECT_EQ(false, interval1.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());
    vector<shared_ptr<LogEvent>> allData;

    allData.clear();
    shared_ptr<LogEvent> event1 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event1->write(2);
    event1->write(4);
    event1->init();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event2->write(1);
    event2->write(11);
    event2->init();
    allData.push_back(event1);
    allData.push_back(event2);

    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(2UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(true, interval1.hasBase);
    EXPECT_EQ(11, interval1.base.long_value);
    EXPECT_EQ(false, interval1.hasValue);
    EXPECT_EQ(8, interval1.value.long_value);
    EXPECT_FALSE(interval1.seenNewData);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {8}, {bucketSizeNs});

    auto it = valueProducer->mCurrentSlicedBucket.begin();
    for (; it != valueProducer->mCurrentSlicedBucket.end(); it++) {
        if (it != iter) {
            break;
        }
    }
    EXPECT_TRUE(it != iter);
    auto& interval2 = it->second[0];
    EXPECT_EQ(2, it->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval2.hasBase);
    EXPECT_EQ(4, interval2.base.long_value);
    EXPECT_EQ(false, interval2.hasValue);
    EXPECT_FALSE(interval2.seenNewData);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {8}, {bucketSizeNs});

    // next pull somehow did not happen, skip to end of bucket 3
    allData.clear();
    event1 = make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1);
    event1->write(2);
    event1->write(5);
    event1->init();
    allData.push_back(event1);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket4StartTimeNs);
	// Only one interval left. One was trimmed.
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    interval2 = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(2, it->first.getDimensionKeyInWhat().getValues()[0].mValue.int_value);
    EXPECT_EQ(true, interval2.hasBase);
    EXPECT_EQ(5, interval2.base.long_value);
    EXPECT_EQ(false, interval2.hasValue);
    EXPECT_FALSE(interval2.seenNewData);
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {8}, {bucketSizeNs});

    allData.clear();
    event1 = make_shared<LogEvent>(tagId, bucket5StartTimeNs + 1);
    event1->write(2);
    event1->write(14);
    event1->init();
    allData.push_back(event1);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket5StartTimeNs);

    interval2 = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, interval2.hasBase);
    EXPECT_EQ(14, interval2.base.long_value);
    EXPECT_EQ(false, interval2.hasValue);
    EXPECT_FALSE(interval2.seenNewData);
    ASSERT_EQ(2UL, valueProducer->mPastBuckets.size());
    auto iterator = valueProducer->mPastBuckets.begin();
    EXPECT_EQ(9, iterator->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, iterator->second[0].mConditionTrueNs);
    iterator++;
    EXPECT_EQ(8, iterator->second[0].values[0].long_value);
    EXPECT_EQ(bucketSizeNs, iterator->second[0].mConditionTrueNs);
}

TEST(ValueMetricProducerTest, TestResetBaseOnPullFailAfterConditionChange_EndOfBucket) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    // Used by onConditionChanged.
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(100, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);

    vector<shared_ptr<LogEvent>> allData;
    valueProducer->onDataPulled(allData, /** succeed */ false, bucket2StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(false, valueProducer->mHasGlobalBase);
}

TEST(ValueMetricProducerTest, TestResetBaseOnPullFailAfterConditionChange) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Return(false));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(100, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());

    valueProducer->onConditionChanged(false, bucketStartTimeNs + 20);

    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, valueProducer->mHasGlobalBase);
}

TEST(ValueMetricProducerTest, TestResetBaseOnPullFailBeforeConditionChange) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(50);
                event->init();
                data->push_back(event);
                return false;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Don't directly set mCondition; the real code never does that. Go through regular code path
    // to avoid unexpected behaviors.
    // valueProducer->mCondition = ConditionState::kTrue;
    valueProducer->onConditionChanged(true, bucketStartTimeNs);

    EXPECT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());

    valueProducer->onConditionChanged(false, bucketStartTimeNs + 1);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(false, valueProducer->mHasGlobalBase);
}

TEST(ValueMetricProducerTest, TestResetBaseOnPullDelayExceeded) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_condition(StringToId("SCREEN_ON"));
    metric.set_max_pull_delay_sec(0);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->mCondition = ConditionState::kFalse;

    // Max delay is set to 0 so pull will exceed max delay.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 1);
    EXPECT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());
}

TEST(ValueMetricProducerTest, TestResetBaseOnPullTooLate) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

    ValueMetricProducer valueProducer(kConfigKey, metric, 1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, tagId, bucket2StartTimeNs,
                                      bucket2StartTimeNs, pullerManager);
    valueProducer.mCondition = ConditionState::kFalse;

    // Event should be skipped since it is from previous bucket.
    // Pull should not be called.
    valueProducer.onConditionChanged(true, bucketStartTimeNs);
    EXPECT_EQ(0UL, valueProducer.mCurrentSlicedBucket.size());
}

TEST(ValueMetricProducerTest, TestBaseSetOnConditionChange) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
                event->write(tagId);
                event->write(100);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->mCondition = ConditionState::kFalse;
    valueProducer->mHasGlobalBase = false;

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 1);
    valueProducer->mHasGlobalBase = true;
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(100, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);
}

/*
 * Tests that a bucket is marked invalid when a condition change pull fails.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenOneConditionFailed) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Return(false))
            // Second onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(130);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->mCondition = ConditionState::kTrue;

    // Bucket start.
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
    event->write(1);
    event->write(110);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucketStartTimeNs);

    // This will fail and should invalidate the whole bucket since we do not have all the data
    // needed to compute the metric value when the screen was on.
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 2);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 3);

    // Bucket end.
    allData.clear();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event2->write(1);
    event2->write(140);
    event2->init();
    allData.push_back(event2);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    valueProducer->flushIfNeededLocked(bucket2StartTimeNs + 1);

    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());
    // Contains base from last pull which was successful.
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(140, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket2StartTimeNs + 10, false /* include partial bucket */, true,
                                FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 2), dropEvent.drop_time_millis());
}

/*
 * Tests that a bucket is marked invalid when the guardrail is hit.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenGuardRailHit) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.mutable_dimensions_in_what()->set_field(tagId);
    metric.mutable_dimensions_in_what()->add_child()->set_field(1);
    metric.set_condition(StringToId("SCREEN_ON"));

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                for (int i = 0; i < 2000; i++) {
                    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
                    event->write(i);
                    event->write(i);
                    event->init();
                    data->push_back(event);
                }
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->mCondition = ConditionState::kFalse;

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 2);
    EXPECT_EQ(true, valueProducer->mCurrentBucketIsInvalid);
    EXPECT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(0UL, valueProducer->mSkippedBuckets.size());

    // Bucket 2 start.
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(1);
    event->write(10);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // First bucket added to mSkippedBuckets after flush.
    EXPECT_EQ(1UL, valueProducer->mSkippedBuckets.size());

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket2StartTimeNs + 10000, false /* include recent buckets */,
                                true, FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::DIMENSION_GUARDRAIL_REACHED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 2), dropEvent.drop_time_millis());
}

/*
 * Tests that a bucket is marked invalid when the bucket's initial pull fails.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenInitialPullFailed) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Second onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(130);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->mCondition = ConditionState::kTrue;

    // Bucket start.
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
    event->write(1);
    event->write(110);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ false, bucketStartTimeNs);

    valueProducer->onConditionChanged(false, bucketStartTimeNs + 2);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 3);

    // Bucket end.
    allData.clear();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event2->write(1);
    event2->write(140);
    event2->init();
    allData.push_back(event2);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    valueProducer->flushIfNeededLocked(bucket2StartTimeNs + 1);

    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());
    // Contains base from last pull which was successful.
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(140, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket2StartTimeNs + 10000, false /* include recent buckets */,
                                true, FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 2), dropEvent.drop_time_millis());
}

/*
 * Tests that a bucket is marked invalid when the bucket's final pull fails
 * (i.e. failed pull on bucket boundary).
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenLastPullFailed) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(120);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Second onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 8);
                event->write(tagId);
                event->write(130);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->mCondition = ConditionState::kTrue;

    // Bucket start.
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
    event->write(1);
    event->write(110);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucketStartTimeNs);

    valueProducer->onConditionChanged(false, bucketStartTimeNs + 2);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 3);

    // Bucket end.
    allData.clear();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event2->write(1);
    event2->write(140);
    event2->init();
    allData.push_back(event2);
    valueProducer->onDataPulled(allData, /** succeed */ false, bucket2StartTimeNs);

    valueProducer->flushIfNeededLocked(bucket2StartTimeNs + 1);

    EXPECT_EQ(0UL, valueProducer->mPastBuckets.size());
    // Last pull failed so base has been reset.
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(false, valueProducer->mHasGlobalBase);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket2StartTimeNs + 10000, false /* include recent buckets */,
                                true, FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs), dropEvent.drop_time_millis());
}

TEST(ValueMetricProducerTest, TestEmptyDataResetsBase_onDataPulled) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Start bucket.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    // Bucket 2 start.
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(110);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());

    // Bucket 3 empty.
    allData.clear();
    shared_ptr<LogEvent> event2 = make_shared<LogEvent>(tagId, bucket3StartTimeNs + 1);
    event2->init();
    allData.push_back(event2);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket3StartTimeNs);
    // Data has been trimmed.
    EXPECT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());
    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
}

TEST(ValueMetricProducerTest, TestEmptyDataResetsBase_onConditionChanged) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);

    // Empty pull.
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 10);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(false, valueProducer->mHasGlobalBase);
}

TEST(ValueMetricProducerTest, TestEmptyDataResetsBase_onBucketBoundary) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(1);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(2);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(5);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 11);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 12);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval& curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);

    // End of bucket
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    // Data is empty, base should be reset.
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(5, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);
    EXPECT_EQ(true, valueProducer->mHasGlobalBase);

    EXPECT_EQ(1UL, valueProducer->mPastBuckets.size());
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {1}, {bucketSizeNs - 12 + 1});
}

TEST(ValueMetricProducerTest, TestPartialResetOnBucketBoundaries) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.mutable_dimensions_in_what()->set_field(tagId);
    metric.mutable_dimensions_in_what()->add_child()->set_field(1);
    metric.set_condition(StringToId("SCREEN_ON"));

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First onConditionChanged
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(1);
                event->write(1);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());

    // End of bucket
    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(2);
    event->write(2);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // Key 1 should be reset since in not present in the most pull.
    EXPECT_EQ(2UL, valueProducer->mCurrentSlicedBucket.size());
    auto iterator = valueProducer->mCurrentSlicedBucket.begin();
    EXPECT_EQ(true, iterator->second[0].hasBase);
    EXPECT_EQ(2, iterator->second[0].base.long_value);
    EXPECT_EQ(false, iterator->second[0].hasValue);
    iterator++;
    EXPECT_EQ(false, iterator->second[0].hasBase);
    EXPECT_EQ(1, iterator->second[0].base.long_value);
    EXPECT_EQ(false, iterator->second[0].hasValue);

    EXPECT_EQ(true, valueProducer->mHasGlobalBase);
}

TEST(ValueMetricProducerTest, TestFullBucketResetWhenLastBucketInvalid) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initialization.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs, 1));
                return true;
            }))
            // notifyAppUpgrade.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(
                        bucketStartTimeNs + bucketSizeNs / 2, 10));
                return true;
            }));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);
    ASSERT_EQ(0UL, valueProducer->mCurrentFullBucket.size());

    valueProducer->notifyAppUpgrade(bucketStartTimeNs + bucketSizeNs / 2, "com.foo", 10000, 1);
    ASSERT_EQ(1UL, valueProducer->mCurrentFullBucket.size());

    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket3StartTimeNs + 1, 4));
    valueProducer->onDataPulled(allData, /** fails */ false, bucket3StartTimeNs + 1);
    ASSERT_EQ(0UL, valueProducer->mCurrentFullBucket.size());
}

TEST(ValueMetricProducerTest, TestBucketBoundariesOnConditionChange) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Second onConditionChanged.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(
                        ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 10, 5));
                return true;
            }))
            // Third onConditionChanged.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(
                        ValueMetricProducerTestHelper::createEvent(bucket3StartTimeNs + 10, 7));
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->mCondition = ConditionState::kUnknown;

    valueProducer->onConditionChanged(false, bucketStartTimeNs);
    ASSERT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());

    // End of first bucket
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 1, 4));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs + 1);
    ASSERT_EQ(0UL, valueProducer->mCurrentSlicedBucket.size());

    valueProducer->onConditionChanged(true, bucket2StartTimeNs + 10);
    ASSERT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    auto curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasBase);
    EXPECT_EQ(5, curInterval.base.long_value);
    EXPECT_EQ(false, curInterval.hasValue);

    valueProducer->onConditionChanged(false, bucket3StartTimeNs + 10);

    // Bucket should have been completed.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {2}, {bucketSizeNs - 10});
}

TEST(ValueMetricProducerTest, TestLateOnDataPulledWithoutDiff) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_use_diff(false);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs + 30, 10));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucketStartTimeNs + 30);

    allData.clear();
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs, 20));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // Bucket should have been completed.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {30}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestLateOnDataPulledWithDiff) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initialization.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs, 1));
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs + 30, 10));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucketStartTimeNs + 30);

    allData.clear();
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs, 20));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // Bucket should have been completed.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {19}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestBucketBoundariesOnAppUpgrade) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initialization.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs, 1));
                return true;
            }))
            // notifyAppUpgrade.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(
                        ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 2, 10));
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    valueProducer->notifyAppUpgrade(bucket2StartTimeNs + 2, "com.foo", 10000, 1);

    // Bucket should have been completed.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {9}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestDataIsNotUpdatedWhenNoConditionChanged) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First on condition changed.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs, 1));
                return true;
            }))
            // Second on condition changed.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs, 3));
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 10);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 10);

    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    auto curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(2, curInterval.value.long_value);

    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 1, 10));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs + 1);

    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {2}, {2});
}

// TODO: b/145705635 fix or delete this test
TEST(ValueMetricProducerTest, TestBucketInvalidIfGlobalBaseIsNotSet) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First condition change.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs, 1));
                return true;
            }))
            // 2nd condition change.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs, 1));
                return true;
            }))
            // 3rd condition change.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs, 1));
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->onConditionChanged(true, bucket2StartTimeNs + 10);

    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucketStartTimeNs + 3, 10));
    valueProducer->onDataPulled(allData, /** succeed */ false, bucketStartTimeNs + 3);

    allData.clear();
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs, 20));
    valueProducer->onDataPulled(allData, /** succeed */ false, bucket2StartTimeNs);

    valueProducer->onConditionChanged(false, bucket2StartTimeNs + 8);
    valueProducer->onConditionChanged(true, bucket2StartTimeNs + 10);

    allData.clear();
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket3StartTimeNs, 30));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // There was not global base available so all buckets are invalid.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {}, {});
}

TEST(ValueMetricProducerTest, TestPullNeededFastDump) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initial pull.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(1);
                event->write(1);
                event->init();
                data->push_back(event);
                return true;
            }));

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, tagId, bucketStartTimeNs,
                                      bucketStartTimeNs, pullerManager);

    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer.onDumpReport(bucketStartTimeNs + 10,
                               true /* include recent buckets */, true,
                               FAST, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    // Bucket is invalid since we did not pull when dump report was called.
    EXPECT_EQ(0, report.value_metrics().data_size());
}

TEST(ValueMetricProducerTest, TestFastDumpWithoutCurrentBucket) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initial pull.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(1);
                event->write(1);
                event->init();
                data->push_back(event);
                return true;
            }));

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, tagId, bucketStartTimeNs,
                                      bucketStartTimeNs, pullerManager);

    vector<shared_ptr<LogEvent>> allData;
    allData.clear();
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 1);
    event->write(tagId);
    event->write(2);
    event->write(2);
    event->init();
    allData.push_back(event);
    valueProducer.onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer.onDumpReport(bucket4StartTimeNs,
                               false /* include recent buckets */, true,
                               FAST, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    // Previous bucket is part of the report.
    EXPECT_EQ(1, report.value_metrics().data_size());
    EXPECT_EQ(0, report.value_metrics().data(0).bucket_info(0).bucket_num());
}

TEST(ValueMetricProducerTest, TestPullNeededNoTimeConstraints) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();

    UidMap uidMap;
    SimpleAtomMatcher atomMatcher;
    atomMatcher.set_atom_id(tagId);
    sp<EventMatcherWizard> eventMatcherWizard =
            new EventMatcherWizard({new SimpleLogMatchingTracker(
                    atomMatcherId, logEventMatcherIndex, atomMatcher, uidMap)});
    sp<MockConditionWizard> wizard = new NaggyMock<MockConditionWizard>();
    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, RegisterReceiver(tagId, _, _, _)).WillOnce(Return());
    EXPECT_CALL(*pullerManager, UnRegisterReceiver(tagId, _)).WillRepeatedly(Return());

    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Initial pull.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs);
                event->write(tagId);
                event->write(1);
                event->write(1);
                event->init();
                data->push_back(event);
                return true;
            }))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
                event->write(tagId);
                event->write(3);
                event->write(3);
                event->init();
                data->push_back(event);
                return true;
            }));

    ValueMetricProducer valueProducer(kConfigKey, metric, -1, wizard, logEventMatcherIndex,
                                      eventMatcherWizard, tagId, bucketStartTimeNs,
                                      bucketStartTimeNs, pullerManager);

    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer.onDumpReport(bucketStartTimeNs + 10,
                               true /* include recent buckets */, true,
                               NO_TIME_CONSTRAINTS, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_EQ(1, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().data(0).bucket_info_size());
    EXPECT_EQ(2, report.value_metrics().data(0).bucket_info(0).values(0).value_long());
}

TEST(ValueMetricProducerTest, TestPulledData_noDiff_withoutCondition) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetric();
    metric.set_use_diff(false);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerNoConditions(pullerManager, metric);

    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 30, 10));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs + 30);

    // Bucket should have been completed.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {10}, {bucketSizeNs});
}

TEST(ValueMetricProducerTest, TestPulledData_noDiff_withMultipleConditionChanges) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();
    metric.set_use_diff(false);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // condition becomes true
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(
                        bucketStartTimeNs + 30, 10));
                return true;
            }))
            // condition becomes false
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(
                        bucketStartTimeNs + 50, 20));
                return true;
            }));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->mCondition = ConditionState::kFalse;

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 50);
    // has one slice
    EXPECT_EQ(1UL, valueProducer->mCurrentSlicedBucket.size());
    ValueMetricProducer::Interval curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(true, curInterval.hasValue);
    EXPECT_EQ(20, curInterval.value.long_value);


    // Now the alarm is delivered. Condition is off though.
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 30, 110));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {20}, {50 - 8});
    curInterval = valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
}

TEST(ValueMetricProducerTest, TestPulledData_noDiff_bucketBoundaryTrue) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();
    metric.set_use_diff(false);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // condition becomes true
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(
                        bucketStartTimeNs + 30, 10));
                return true;
            }));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->mCondition = ConditionState::kFalse;

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);

    // Now the alarm is delivered. Condition is off though.
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 30, 30));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {30}, {bucketSizeNs - 8});
    ValueMetricProducer::Interval curInterval =
            valueProducer->mCurrentSlicedBucket.begin()->second[0];
    EXPECT_EQ(false, curInterval.hasBase);
    EXPECT_EQ(false, curInterval.hasValue);
}

TEST(ValueMetricProducerTest, TestPulledData_noDiff_bucketBoundaryFalse) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();
    metric.set_use_diff(false);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->mCondition = ConditionState::kFalse;

    // Now the alarm is delivered. Condition is off though.
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 30, 30));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // Condition was always false.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {}, {});
}

TEST(ValueMetricProducerTest, TestPulledData_noDiff_withFailure) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();
    metric.set_use_diff(false);

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // condition becomes true
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                data->push_back(ValueMetricProducerTestHelper::createEvent(
                        bucketStartTimeNs + 30, 10));
                return true;
            }))
            .WillOnce(Return(false));
    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);
    valueProducer->mCondition = ConditionState::kFalse;

    valueProducer->onConditionChanged(true, bucketStartTimeNs + 8);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 50);

    // Now the alarm is delivered. Condition is off though.
    vector<shared_ptr<LogEvent>> allData;
    allData.push_back(ValueMetricProducerTestHelper::createEvent(bucket2StartTimeNs + 30, 30));
    valueProducer->onDataPulled(allData, /** succeed */ true, bucket2StartTimeNs);

    // No buckets, we had a failure.
    assertPastBucketValuesSingleKey(valueProducer->mPastBuckets, {}, {});
}

/*
 * Test that DUMP_REPORT_REQUESTED dump reason is logged.
 *
 * For the bucket to be marked invalid during a dump report requested,
 * three things must be true:
 * - we want to include the current partial bucket
 * - we need a pull (metric is pulled and condition is true)
 * - the dump latency must be FAST
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenDumpReportRequested) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 20);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 20);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucketStartTimeNs + 40, true /* include recent buckets */, true,
                                FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::DUMP_REPORT_REQUESTED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 40), dropEvent.drop_time_millis());
}

/*
 * Test that EVENT_IN_WRONG_BUCKET dump reason is logged for a late condition
 * change event (i.e. the condition change occurs in the wrong bucket).
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenConditionEventWrongBucket) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 50);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 50);

    // Bucket boundary pull.
    vector<shared_ptr<LogEvent>> allData;
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs);
    event->write("field1");
    event->write(15);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeeds */ true, bucket2StartTimeNs + 1);

    // Late condition change event.
    valueProducer->onConditionChanged(false, bucket2StartTimeNs - 100);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket2StartTimeNs + 100, true /* include recent buckets */, true,
                                NO_TIME_CONSTRAINTS /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(1, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket3StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::EVENT_IN_WRONG_BUCKET, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs - 100), dropEvent.drop_time_millis());
}

/*
 * Test that EVENT_IN_WRONG_BUCKET dump reason is logged for a late accumulate
 * event (i.e. the accumulate events call occurs in the wrong bucket).
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenAccumulateEventWrongBucket) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 50);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Dump report requested.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs + 100);
                event->write("field1");
                event->write(15);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 50);

    // Bucket boundary pull.
    vector<shared_ptr<LogEvent>> allData;
    shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucket2StartTimeNs);
    event->write("field1");
    event->write(15);
    event->init();
    allData.push_back(event);
    valueProducer->onDataPulled(allData, /** succeeds */ true, bucket2StartTimeNs + 1);

    allData.clear();
    event = make_shared<LogEvent>(tagId, bucket2StartTimeNs - 100);
    event->write("field1");
    event->write(20);
    event->init();
    allData.push_back(event);

    // Late accumulateEvents event.
    valueProducer->accumulateEvents(allData, bucket2StartTimeNs - 100, bucket2StartTimeNs - 100);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket2StartTimeNs + 100, true /* include recent buckets */, true,
                                NO_TIME_CONSTRAINTS /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(1, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket3StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::EVENT_IN_WRONG_BUCKET, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs - 100), dropEvent.drop_time_millis());
}

/*
 * Test that CONDITION_UNKNOWN dump reason is logged due to an unknown condition
 * when a metric is initialized.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenConditionUnknown) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 50);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Dump report requested.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 100);
                event->write("field1");
                event->write(15);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithNoInitialCondition(pullerManager,
                                                                                     metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 50);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucketStartTimeNs + 100, true /* include recent buckets */, true,
                                NO_TIME_CONSTRAINTS /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::CONDITION_UNKNOWN, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 100), dropEvent.drop_time_millis());
}

/*
 * Test that PULL_FAILED dump reason is logged due to a pull failure in
 * #pullAndMatchEventsLocked.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenPullFailed) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 50);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Dump report requested, pull fails.
            .WillOnce(Return(false));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 50);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucketStartTimeNs + 100, true /* include recent buckets */, true,
                                NO_TIME_CONSTRAINTS /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 100), dropEvent.drop_time_millis());
}

/*
 * Test that MULTIPLE_BUCKETS_SKIPPED dump reason is logged when a log event
 * skips over more than one bucket.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestInvalidBucketWhenMultipleBucketsSkipped) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Dump report requested.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event =
                        make_shared<LogEvent>(tagId, bucket4StartTimeNs + 1000);
                event->write("field1");
                event->write(15);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);

    // Condition change event that skips forward by three buckets.
    valueProducer->onConditionChanged(false, bucket4StartTimeNs + 10);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucket4StartTimeNs + 1000, true /* include recent buckets */, true,
                                NO_TIME_CONSTRAINTS /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::MULTIPLE_BUCKETS_SKIPPED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucket4StartTimeNs + 10), dropEvent.drop_time_millis());
}

/*
 * Test that BUCKET_TOO_SMALL dump reason is logged when a flushed bucket size
 * is smaller than the "min_bucket_size_nanos" specified in the metric config.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestBucketDropWhenBucketTooSmall) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();
    metric.set_min_bucket_size_nanos(10000000000);  // 10 seconds

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }))
            // Dump report requested.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event =
                        make_shared<LogEvent>(tagId, bucketStartTimeNs + 9000000);
                event->write("field1");
                event->write(15);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithCondition(pullerManager, metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucketStartTimeNs + 9000000, true /* include recent buckets */,
                                true, NO_TIME_CONSTRAINTS /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 9000000),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(1, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::BUCKET_TOO_SMALL, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 9000000), dropEvent.drop_time_millis());
}

/*
 * Test multiple bucket drop events in the same bucket.
 */
TEST(ValueMetricProducerTest_BucketDrop, TestMultipleBucketDropEvents) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // Condition change to true.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 10);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithNoInitialCondition(pullerManager,
                                                                                     metric);

    // Condition change event.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    valueProducer->onDumpReport(bucketStartTimeNs + 1000, true /* include recent buckets */, true,
                                FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(2, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::CONDITION_UNKNOWN, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 10), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(1);
    EXPECT_EQ(BucketDropReason::DUMP_REPORT_REQUESTED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 1000), dropEvent.drop_time_millis());
}

/*
 * Test that the number of logged bucket drop events is capped at the maximum.
 * The maximum is currently 10 and is set in MetricProducer::maxDropEventsReached().
 */
TEST(ValueMetricProducerTest_BucketDrop, TestMaxBucketDropEvents) {
    ValueMetric metric = ValueMetricProducerTestHelper::createMetricWithCondition();

    sp<MockStatsPullerManager> pullerManager = new StrictMock<MockStatsPullerManager>();
    EXPECT_CALL(*pullerManager, Pull(tagId, _))
            // First condition change event.
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                for (int i = 0; i < 2000; i++) {
                    shared_ptr<LogEvent> event =
                            make_shared<LogEvent>(tagId, bucketStartTimeNs + 1);
                    event->write(i);
                    event->write(i);
                    event->init();
                    data->push_back(event);
                }
                return true;
            }))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Return(false))
            .WillOnce(Invoke([](int tagId, vector<std::shared_ptr<LogEvent>>* data) {
                data->clear();
                shared_ptr<LogEvent> event = make_shared<LogEvent>(tagId, bucketStartTimeNs + 220);
                event->write("field1");
                event->write(10);
                event->init();
                data->push_back(event);
                return true;
            }));

    sp<ValueMetricProducer> valueProducer =
            ValueMetricProducerTestHelper::createValueProducerWithNoInitialCondition(pullerManager,
                                                                                     metric);

    // First condition change event causes guardrail to be reached.
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 10);

    // 2-10 condition change events result in failed pulls.
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 30);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 50);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 70);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 90);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 100);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 150);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 170);
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 190);
    valueProducer->onConditionChanged(false, bucketStartTimeNs + 200);

    // Condition change event 11
    valueProducer->onConditionChanged(true, bucketStartTimeNs + 220);

    // Check dump report.
    ProtoOutputStream output;
    std::set<string> strSet;
    // Because we already have 10 dump events in the current bucket,
    // this case should not be added to the list of dump events.
    valueProducer->onDumpReport(bucketStartTimeNs + 1000, true /* include recent buckets */, true,
                                FAST /* dumpLatency */, &strSet, &output);

    StatsLogReport report = outputStreamToProto(&output);
    EXPECT_TRUE(report.has_value_metrics());
    EXPECT_EQ(0, report.value_metrics().data_size());
    EXPECT_EQ(1, report.value_metrics().skipped_size());

    EXPECT_EQ(NanoToMillis(bucketStartTimeNs),
              report.value_metrics().skipped(0).start_bucket_elapsed_millis());
    EXPECT_EQ(NanoToMillis(bucket2StartTimeNs),
              report.value_metrics().skipped(0).end_bucket_elapsed_millis());
    EXPECT_EQ(10, report.value_metrics().skipped(0).drop_event_size());

    auto dropEvent = report.value_metrics().skipped(0).drop_event(0);
    EXPECT_EQ(BucketDropReason::CONDITION_UNKNOWN, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 10), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(1);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 30), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(2);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 50), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(3);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 70), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(4);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 90), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(5);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 100), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(6);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 150), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(7);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 170), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(8);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 190), dropEvent.drop_time_millis());

    dropEvent = report.value_metrics().skipped(0).drop_event(9);
    EXPECT_EQ(BucketDropReason::PULL_FAILED, dropEvent.drop_reason());
    EXPECT_EQ(NanoToMillis(bucketStartTimeNs + 200), dropEvent.drop_time_millis());
}

}  // namespace statsd
}  // namespace os
}  // namespace android
#else
GTEST_LOG_(INFO) << "This test does nothing.\n";
#endif