task_trace_unittest.cc 2.3 KB

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  1. // Copyright 2019 The Chromium 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. #include "base/debug/task_trace.h"
  5. #include <ostream>
  6. #include "base/memory/raw_ptr.h"
  7. #include "base/run_loop.h"
  8. #include "base/test/bind.h"
  9. #include "base/test/task_environment.h"
  10. #include "testing/gtest/include/gtest/gtest.h"
  11. namespace base {
  12. namespace debug {
  13. TEST(TaskTraceTest, NoTask) {
  14. TaskTrace task_trace;
  15. EXPECT_TRUE(task_trace.empty());
  16. EXPECT_EQ(task_trace.AddressesForTesting().size(), 0ul);
  17. }
  18. class ThreeTasksTest {
  19. public:
  20. ThreeTasksTest() {}
  21. void Run() {
  22. task_runner.PostTask(FROM_HERE, base::BindOnce(&ThreeTasksTest::TaskA,
  23. base::Unretained(this)));
  24. task_environment.RunUntilIdle();
  25. }
  26. void TaskA() {
  27. TaskTrace task_trace;
  28. EXPECT_FALSE(task_trace.empty());
  29. base::span<const void* const> addresses = task_trace.AddressesForTesting();
  30. EXPECT_EQ(addresses.size(), 1ul);
  31. task_a_address = addresses[0];
  32. task_runner.PostTask(FROM_HERE, base::BindOnce(&ThreeTasksTest::TaskB,
  33. base::Unretained(this)));
  34. }
  35. void TaskB() {
  36. TaskTrace task_trace;
  37. EXPECT_FALSE(task_trace.empty());
  38. base::span<const void* const> addresses = task_trace.AddressesForTesting();
  39. EXPECT_EQ(addresses.size(), 2ul);
  40. task_b_address = addresses[0];
  41. EXPECT_EQ(addresses[1], task_a_address);
  42. task_runner.PostTask(FROM_HERE, base::BindOnce(&ThreeTasksTest::TaskC,
  43. base::Unretained(this)));
  44. }
  45. void TaskC() {
  46. TaskTrace task_trace;
  47. EXPECT_FALSE(task_trace.empty());
  48. base::span<const void* const> addresses = task_trace.AddressesForTesting();
  49. EXPECT_EQ(addresses.size(), 3ul);
  50. EXPECT_EQ(addresses[1], task_b_address);
  51. EXPECT_EQ(addresses[2], task_a_address);
  52. }
  53. private:
  54. base::test::TaskEnvironment task_environment;
  55. base::SingleThreadTaskRunner& task_runner =
  56. *task_environment.GetMainThreadTaskRunner();
  57. raw_ptr<const void> task_a_address = nullptr;
  58. raw_ptr<const void> task_b_address = nullptr;
  59. };
  60. TEST(TaskTraceTest, ThreeTasks) {
  61. ThreeTasksTest().Run();
  62. }
  63. } // namespace debug
  64. } // namespace base