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Diffstat (limited to 'base/barrier_closure_unittest.cc')
-rw-r--r-- | base/barrier_closure_unittest.cc | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/base/barrier_closure_unittest.cc b/base/barrier_closure_unittest.cc new file mode 100644 index 0000000000..819f6ac2c2 --- /dev/null +++ b/base/barrier_closure_unittest.cc @@ -0,0 +1,81 @@ +// 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 "testing/gtest/include/gtest/gtest.h" + +namespace { + +void Increment(int* count) { (*count)++; } + +TEST(BarrierClosureTest, RunImmediatelyForZeroClosures) { + int count = 0; + base::Closure done_closure(base::Bind(&Increment, base::Unretained(&count))); + + base::Closure barrier_closure = base::BarrierClosure(0, done_closure); + EXPECT_EQ(1, count); +} + +TEST(BarrierClosureTest, RunAfterNumClosures) { + int count = 0; + base::Closure done_closure(base::Bind(&Increment, base::Unretained(&count))); + + base::Closure barrier_closure = base::BarrierClosure(2, done_closure); + 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: + bool* destructed_; +}; + +TEST(BarrierClosureTest, ReleasesDoneClosureWhenDone) { + bool done_destructed = false; + base::Closure 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); +} + +void ResetBarrierClosure(base::Closure* closure) { + *closure = base::Closure(); +} + +// Tests a case when |done_closure| resets a |barrier_closure|. +// |barrier_closure| is a Closure 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::Closure barrier_closure; + base::Closure done_closure = + base::Bind(ResetBarrierClosure, &barrier_closure); + barrier_closure = base::BarrierClosure(1, done_closure); + barrier_closure.Run(); +} + +} // namespace |