Alex Deymo | 106edd1 | 2015-06-18 20:15:11 -0700 | [diff] [blame^] | 1 | // Copyright 2015 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include <chromeos/message_loops/fake_message_loop.h> |
| 6 | |
| 7 | #include <memory> |
| 8 | #include <vector> |
| 9 | |
| 10 | #include <base/bind.h> |
| 11 | #include <base/location.h> |
| 12 | #include <base/test/simple_test_clock.h> |
| 13 | #include <gtest/gtest.h> |
| 14 | |
| 15 | #include <chromeos/bind_lambda.h> |
| 16 | #include <chromeos/message_loops/message_loop.h> |
| 17 | |
| 18 | using base::Bind; |
| 19 | using base::Time; |
| 20 | using base::TimeDelta; |
| 21 | using std::vector; |
| 22 | |
| 23 | namespace chromeos { |
| 24 | |
| 25 | using TaskId = MessageLoop::TaskId; |
| 26 | |
| 27 | class FakeMessageLoopTest : public ::testing::Test { |
| 28 | protected: |
| 29 | void SetUp() override { |
| 30 | loop_.reset(new FakeMessageLoop(nullptr)); |
| 31 | EXPECT_TRUE(loop_.get()); |
| 32 | } |
| 33 | void TearDown() override { |
| 34 | EXPECT_FALSE(loop_->PendingTasks()); |
| 35 | } |
| 36 | |
| 37 | base::SimpleTestClock clock_; |
| 38 | std::unique_ptr<FakeMessageLoop> loop_; |
| 39 | }; |
| 40 | |
| 41 | TEST_F(FakeMessageLoopTest, CancelTaskInvalidValuesTest) { |
| 42 | EXPECT_FALSE(loop_->CancelTask(MessageLoop::kTaskIdNull)); |
| 43 | EXPECT_FALSE(loop_->CancelTask(1234)); |
| 44 | } |
| 45 | |
| 46 | TEST_F(FakeMessageLoopTest, PostDelayedTaskRunsInOrder) { |
| 47 | vector<int> order; |
| 48 | loop_->PostDelayedTask(Bind([&order]() { order.push_back(1); }), |
| 49 | TimeDelta::FromSeconds(1)); |
| 50 | loop_->PostDelayedTask(Bind([&order]() { order.push_back(4); }), |
| 51 | TimeDelta::FromSeconds(4)); |
| 52 | loop_->PostDelayedTask(Bind([&order]() { order.push_back(3); }), |
| 53 | TimeDelta::FromSeconds(3)); |
| 54 | loop_->PostDelayedTask(Bind([&order]() { order.push_back(2); }), |
| 55 | TimeDelta::FromSeconds(2)); |
| 56 | // Run until all the tasks are run. |
| 57 | loop_->Run(); |
| 58 | EXPECT_EQ((vector<int>{1, 2, 3, 4}), order); |
| 59 | } |
| 60 | |
| 61 | TEST_F(FakeMessageLoopTest, PostDelayedTaskAdvancesTheTime) { |
| 62 | Time start = Time::FromInternalValue(1000000); |
| 63 | clock_.SetNow(start); |
| 64 | loop_.reset(new FakeMessageLoop(&clock_)); |
| 65 | loop_->PostDelayedTask(Bind(&base::DoNothing), TimeDelta::FromSeconds(1)); |
| 66 | loop_->PostDelayedTask(Bind(&base::DoNothing), TimeDelta::FromSeconds(2)); |
| 67 | EXPECT_FALSE(loop_->RunOnce(false)); |
| 68 | // If the callback didn't run, the time shouldn't change. |
| 69 | EXPECT_EQ(start, clock_.Now()); |
| 70 | |
| 71 | // If we run only one callback, the time should be set to the time that |
| 72 | // callack ran. |
| 73 | EXPECT_TRUE(loop_->RunOnce(true)); |
| 74 | EXPECT_EQ(start + TimeDelta::FromSeconds(1), clock_.Now()); |
| 75 | |
| 76 | // If the clock is advanced manually, we should be able to run the |
| 77 | // callback without blocking, since the firing time is in the past. |
| 78 | clock_.SetNow(start + TimeDelta::FromSeconds(3)); |
| 79 | EXPECT_TRUE(loop_->RunOnce(false)); |
| 80 | // The time should not change even if the callback is due in the past. |
| 81 | EXPECT_EQ(start + TimeDelta::FromSeconds(3), clock_.Now()); |
| 82 | } |
| 83 | |
| 84 | TEST_F(FakeMessageLoopTest, PendingTasksTest) { |
| 85 | loop_->PostDelayedTask(Bind(&base::DoNothing), TimeDelta::FromSeconds(1)); |
| 86 | EXPECT_TRUE(loop_->PendingTasks()); |
| 87 | loop_->Run(); |
| 88 | } |
| 89 | |
| 90 | } // namespace chromeos |