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- // Copyright 2013 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/barrier_closure.h"
- #include "base/bind.h"
- #include "base/callback.h"
- #include "base/callback_helpers.h"
- #include "base/memory/raw_ptr.h"
- #include "base/test/bind.h"
- #include "base/test/gtest_util.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace {
- TEST(BarrierClosureTest, RunImmediatelyForZeroClosures) {
- int count = 0;
- base::RepeatingClosure barrier_closure = base::BarrierClosure(
- 0, base::BindLambdaForTesting([&count]() { ++count; }));
- EXPECT_EQ(1, count);
- }
- TEST(BarrierClosureTest, ChecksIfCalledForZeroClosures) {
- base::RepeatingClosure barrier_closure =
- base::BarrierClosure(0, base::DoNothing());
- EXPECT_FALSE(barrier_closure.is_null());
- EXPECT_CHECK_DEATH(barrier_closure.Run());
- }
- TEST(BarrierClosureTest, RunAfterNumClosures) {
- int count = 0;
- base::RepeatingClosure barrier_closure = base::BarrierClosure(
- 2, base::BindLambdaForTesting([&count]() { ++count; }));
- EXPECT_EQ(0, count);
- barrier_closure.Run();
- EXPECT_EQ(0, count);
- barrier_closure.Run();
- EXPECT_EQ(1, count);
- }
- class DestructionIndicator {
- public:
- // Sets |*destructed| to true in destructor.
- DestructionIndicator(bool* destructed) : destructed_(destructed) {
- *destructed_ = false;
- }
- ~DestructionIndicator() { *destructed_ = true; }
- void DoNothing() {}
- private:
- raw_ptr<bool> destructed_;
- };
- TEST(BarrierClosureTest, ReleasesDoneClosureWhenDone) {
- bool done_destructed = false;
- base::RepeatingClosure barrier_closure = base::BarrierClosure(
- 1,
- base::BindOnce(&DestructionIndicator::DoNothing,
- base::Owned(new DestructionIndicator(&done_destructed))));
- EXPECT_FALSE(done_destructed);
- barrier_closure.Run();
- EXPECT_TRUE(done_destructed);
- }
- // Tests a case when |done_closure| resets a |barrier_closure|.
- // |barrier_closure| is a RepeatingClosure holding the |done_closure|.
- // |done_closure| holds a pointer back to the |barrier_closure|. When
- // |barrier_closure| is Run() it calls ResetBarrierClosure() which erases the
- // |barrier_closure| while still inside of its Run(). The Run() implementation
- // (in base::BarrierClosure) must not try use itself after executing
- // ResetBarrierClosure() or this test would crash inside Run().
- TEST(BarrierClosureTest, KeepingClosureAliveUntilDone) {
- base::RepeatingClosure barrier_closure;
- barrier_closure =
- base::BarrierClosure(1, base::BindLambdaForTesting([&barrier_closure]() {
- barrier_closure = base::RepeatingClosure();
- }));
- barrier_closure.Run();
- EXPECT_TRUE(barrier_closure.is_null());
- }
- } // namespace
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