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105 lines
2.9 KiB
105 lines
2.9 KiB
4 months ago
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// Copyright 2016 The Chromium Authors. All rights reserved.
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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/sequenced_task_runner.h"
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#include <utility>
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#include "base/bind.h"
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#include "base/gtest_prod_util.h"
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#include "base/message_loop/message_loop.h"
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#include "base/run_loop.h"
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#include "base/threading/thread.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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class FlagOnDelete {
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public:
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FlagOnDelete(bool* deleted,
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scoped_refptr<SequencedTaskRunner> expected_deletion_sequence)
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: deleted_(deleted),
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expected_deletion_sequence_(std::move(expected_deletion_sequence)) {}
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private:
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friend class DeleteHelper<FlagOnDelete>;
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FRIEND_TEST_ALL_PREFIXES(SequencedTaskRunnerTest,
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OnTaskRunnerDeleterTargetStoppedEarly);
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~FlagOnDelete() {
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EXPECT_FALSE(*deleted_);
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*deleted_ = true;
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if (expected_deletion_sequence_)
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EXPECT_TRUE(expected_deletion_sequence_->RunsTasksInCurrentSequence());
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}
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bool* deleted_;
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const scoped_refptr<SequencedTaskRunner> expected_deletion_sequence_;
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DISALLOW_COPY_AND_ASSIGN(FlagOnDelete);
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};
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class SequencedTaskRunnerTest : public testing::Test {
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protected:
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SequencedTaskRunnerTest() : foreign_thread_("foreign") {}
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void SetUp() override {
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main_runner_ = message_loop_.task_runner();
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foreign_thread_.Start();
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foreign_runner_ = foreign_thread_.task_runner();
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}
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scoped_refptr<SequencedTaskRunner> main_runner_;
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scoped_refptr<SequencedTaskRunner> foreign_runner_;
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Thread foreign_thread_;
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private:
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MessageLoop message_loop_;
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DISALLOW_COPY_AND_ASSIGN(SequencedTaskRunnerTest);
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};
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using SequenceBoundUniquePtr =
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std::unique_ptr<FlagOnDelete, OnTaskRunnerDeleter>;
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TEST_F(SequencedTaskRunnerTest, OnTaskRunnerDeleterOnMainThread) {
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bool deleted_on_main_thread = false;
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SequenceBoundUniquePtr ptr(
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new FlagOnDelete(&deleted_on_main_thread, main_runner_),
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OnTaskRunnerDeleter(main_runner_));
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EXPECT_FALSE(deleted_on_main_thread);
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foreign_runner_->PostTask(
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FROM_HERE, BindOnce([](SequenceBoundUniquePtr) {}, std::move(ptr)));
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{
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RunLoop run_loop;
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foreign_runner_->PostTaskAndReply(FROM_HERE, BindOnce([] {}),
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run_loop.QuitClosure());
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run_loop.Run();
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}
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EXPECT_TRUE(deleted_on_main_thread);
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}
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TEST_F(SequencedTaskRunnerTest, OnTaskRunnerDeleterTargetStoppedEarly) {
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bool deleted_on_main_thread = false;
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FlagOnDelete* raw = new FlagOnDelete(&deleted_on_main_thread, main_runner_);
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SequenceBoundUniquePtr ptr(raw, OnTaskRunnerDeleter(foreign_runner_));
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EXPECT_FALSE(deleted_on_main_thread);
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// Stopping the target ahead of deleting |ptr| should make its
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// OnTaskRunnerDeleter no-op.
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foreign_thread_.Stop();
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ptr = nullptr;
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EXPECT_FALSE(deleted_on_main_thread);
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delete raw;
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EXPECT_TRUE(deleted_on_main_thread);
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}
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} // namespace
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} // namespace base
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