| // Copyright 2015 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <chromeos/message_loops/fake_message_loop.h> |
| |
| #include <memory> |
| #include <vector> |
| |
| #include <base/bind.h> |
| #include <base/location.h> |
| #include <base/test/simple_test_clock.h> |
| #include <gtest/gtest.h> |
| |
| #include <chromeos/bind_lambda.h> |
| #include <chromeos/message_loops/message_loop.h> |
| |
| using base::Bind; |
| using base::Time; |
| using base::TimeDelta; |
| using std::vector; |
| |
| namespace chromeos { |
| |
| using TaskId = MessageLoop::TaskId; |
| |
| class FakeMessageLoopTest : public ::testing::Test { |
| protected: |
| void SetUp() override { |
| loop_.reset(new FakeMessageLoop(nullptr)); |
| EXPECT_TRUE(loop_.get()); |
| } |
| void TearDown() override { |
| EXPECT_FALSE(loop_->PendingTasks()); |
| } |
| |
| base::SimpleTestClock clock_; |
| std::unique_ptr<FakeMessageLoop> loop_; |
| }; |
| |
| TEST_F(FakeMessageLoopTest, CancelTaskInvalidValuesTest) { |
| EXPECT_FALSE(loop_->CancelTask(MessageLoop::kTaskIdNull)); |
| EXPECT_FALSE(loop_->CancelTask(1234)); |
| } |
| |
| TEST_F(FakeMessageLoopTest, PostDelayedTaskRunsInOrder) { |
| vector<int> order; |
| loop_->PostDelayedTask(Bind([&order]() { order.push_back(1); }), |
| TimeDelta::FromSeconds(1)); |
| loop_->PostDelayedTask(Bind([&order]() { order.push_back(4); }), |
| TimeDelta::FromSeconds(4)); |
| loop_->PostDelayedTask(Bind([&order]() { order.push_back(3); }), |
| TimeDelta::FromSeconds(3)); |
| loop_->PostDelayedTask(Bind([&order]() { order.push_back(2); }), |
| TimeDelta::FromSeconds(2)); |
| // Run until all the tasks are run. |
| loop_->Run(); |
| EXPECT_EQ((vector<int>{1, 2, 3, 4}), order); |
| } |
| |
| TEST_F(FakeMessageLoopTest, PostDelayedTaskAdvancesTheTime) { |
| Time start = Time::FromInternalValue(1000000); |
| clock_.SetNow(start); |
| loop_.reset(new FakeMessageLoop(&clock_)); |
| loop_->PostDelayedTask(Bind(&base::DoNothing), TimeDelta::FromSeconds(1)); |
| loop_->PostDelayedTask(Bind(&base::DoNothing), TimeDelta::FromSeconds(2)); |
| EXPECT_FALSE(loop_->RunOnce(false)); |
| // If the callback didn't run, the time shouldn't change. |
| EXPECT_EQ(start, clock_.Now()); |
| |
| // If we run only one callback, the time should be set to the time that |
| // callack ran. |
| EXPECT_TRUE(loop_->RunOnce(true)); |
| EXPECT_EQ(start + TimeDelta::FromSeconds(1), clock_.Now()); |
| |
| // If the clock is advanced manually, we should be able to run the |
| // callback without blocking, since the firing time is in the past. |
| clock_.SetNow(start + TimeDelta::FromSeconds(3)); |
| EXPECT_TRUE(loop_->RunOnce(false)); |
| // The time should not change even if the callback is due in the past. |
| EXPECT_EQ(start + TimeDelta::FromSeconds(3), clock_.Now()); |
| } |
| |
| TEST_F(FakeMessageLoopTest, WatchFileDescriptorWaits) { |
| int fd = 1234; |
| // We will simulate this situation. At the beginning, we will watch for a |
| // file descriptor that won't trigger for 10s. Then we will pretend it is |
| // ready after 10s and expect its callback to run just once. |
| int called = 0; |
| TaskId task_id = loop_->WatchFileDescriptor( |
| FROM_HERE, fd, MessageLoop::kWatchRead, false, |
| Bind([&called] { called++; })); |
| EXPECT_NE(MessageLoop::kTaskIdNull, task_id); |
| |
| EXPECT_NE(MessageLoop::kTaskIdNull, |
| loop_->PostDelayedTask(Bind([this] { this->loop_->BreakLoop(); }), |
| TimeDelta::FromSeconds(10))); |
| EXPECT_NE(MessageLoop::kTaskIdNull, |
| loop_->PostDelayedTask(Bind([this] { this->loop_->BreakLoop(); }), |
| TimeDelta::FromSeconds(20))); |
| loop_->Run(); |
| EXPECT_EQ(0, called); |
| |
| loop_->SetFileDescriptorReadiness(fd, MessageLoop::kWatchRead, true); |
| loop_->Run(); |
| EXPECT_EQ(1, called); |
| EXPECT_FALSE(loop_->CancelTask(task_id)); |
| } |
| |
| TEST_F(FakeMessageLoopTest, PendingTasksTest) { |
| loop_->PostDelayedTask(Bind(&base::DoNothing), TimeDelta::FromSeconds(1)); |
| EXPECT_TRUE(loop_->PendingTasks()); |
| loop_->Run(); |
| } |
| |
| } // namespace chromeos |