82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
// Copyright 2019 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/debug/task_trace.h"
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#include <ostream>
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#include "base/memory/raw_ptr.h"
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#include "base/memory/raw_ref.h"
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#include "base/run_loop.h"
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#include "base/task/single_thread_task_runner.h"
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#include "base/test/bind.h"
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#include "base/test/task_environment.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace debug {
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TEST(TaskTraceTest, NoTask) {
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TaskTrace task_trace;
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EXPECT_TRUE(task_trace.empty());
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std::array<const void*, 4> addresses = {0};
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EXPECT_EQ(task_trace.GetAddresses(addresses), 0ul);
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}
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class ThreeTasksTest {
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public:
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ThreeTasksTest() {}
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void Run() {
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task_runner->PostTask(FROM_HERE, base::BindOnce(&ThreeTasksTest::TaskA,
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base::Unretained(this)));
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task_environment.RunUntilIdle();
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}
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void TaskA() {
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TaskTrace task_trace;
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EXPECT_FALSE(task_trace.empty());
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std::array<const void*, 4> addresses = {0};
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EXPECT_EQ(task_trace.GetAddresses(addresses), 1ul);
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task_a_address = addresses[0];
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task_runner->PostTask(FROM_HERE, base::BindOnce(&ThreeTasksTest::TaskB,
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base::Unretained(this)));
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}
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void TaskB() {
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TaskTrace task_trace;
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EXPECT_FALSE(task_trace.empty());
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std::array<const void*, 4> addresses = {0};
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EXPECT_EQ(task_trace.GetAddresses(addresses), 2ul);
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task_b_address = addresses[0];
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EXPECT_EQ(addresses[1], task_a_address);
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task_runner->PostTask(FROM_HERE, base::BindOnce(&ThreeTasksTest::TaskC,
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base::Unretained(this)));
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}
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void TaskC() {
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TaskTrace task_trace;
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EXPECT_FALSE(task_trace.empty());
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std::array<const void*, 4> addresses;
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EXPECT_EQ(task_trace.GetAddresses(addresses), 3ul);
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EXPECT_EQ(addresses[1], task_b_address);
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EXPECT_EQ(addresses[2], task_a_address);
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}
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private:
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base::test::TaskEnvironment task_environment;
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const raw_ref<base::SingleThreadTaskRunner> task_runner{
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*task_environment.GetMainThreadTaskRunner()};
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raw_ptr<const void> task_a_address = nullptr;
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raw_ptr<const void> task_b_address = nullptr;
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};
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TEST(TaskTraceTest, ThreeTasks) {
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ThreeTasksTest().Run();
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}
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} // namespace debug
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} // namespace base
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