chromium/base/task/common/task_annotator_unittest.cc

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/task/common/task_annotator.h"

#include <algorithm>
#include <vector>

#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/pending_task.h"
#include "base/run_loop.h"
#include "base/strings/stringprintf.h"
#include "base/synchronization/lock.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/thread_pool.h"
#include "base/test/bind.h"
#include "base/test/task_environment.h"
#include "base/threading/thread.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace base {
namespace {

void TestTask(int* result) { … }

}  // namespace

TEST(TaskAnnotatorTest, QueueAndRunTask) { … }

// Test task annotator integration in base APIs and ensuing support for
// backtraces. Tasks posted across multiple threads in this test fixture should
// be synchronized as BeforeRunTask() and VerifyTraceAndPost() assume tasks are
// observed in lock steps, one at a time.
class TaskAnnotatorBacktraceIntegrationTest
    : public ::testing::Test,
      public TaskAnnotator::ObserverForTesting { … };

// Ensure the task backtrace populates correctly.
TEST_F(TaskAnnotatorBacktraceIntegrationTest, SingleThreadedSimple) { … }

// Ensure it works when posting tasks across multiple threads managed by //base.
TEST_F(TaskAnnotatorBacktraceIntegrationTest, MultipleThreads) { … }

// Ensure nesting doesn't break the chain.
TEST_F(TaskAnnotatorBacktraceIntegrationTest, SingleThreadedNested) { … }

}  // namespace base