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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "base/atomic.h"
#include "base/lock.h"
#include "testing/gtest/include/gtest/gtest.h"
TEST(AtomicTest, Increment) {
int32 value = 38;
int32 new_value = base::AtomicIncrement(&value);
EXPECT_EQ(39, value);
EXPECT_EQ(39, new_value);
}
TEST(AtomicTest, Decrement) {
int32 value = 49;
int32 new_value = base::AtomicDecrement(&value);
EXPECT_EQ(48, value);
EXPECT_EQ(48, new_value);
}
TEST(AtomicTest, Swap) {
int32 value = 38;
int32 old_value = base::AtomicSwap(&value, 49);
EXPECT_EQ(49, value);
EXPECT_EQ(38, old_value);
// Now do another test.
value = 0;
old_value = base::AtomicSwap(&value, 1);
EXPECT_EQ(0, old_value);
old_value = base::AtomicSwap(&value, 1);
EXPECT_EQ(1, old_value);
old_value = base::AtomicSwap(&value, 1);
EXPECT_EQ(1, old_value);
}
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