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// Copyright (c) 2006-2008 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/basictypes.h"
#include "base/scoped_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class ConDecLogger {
public:
ConDecLogger() : ptr_(NULL) { }
explicit ConDecLogger(int* ptr) { set_ptr(ptr); }
~ConDecLogger() { --*ptr_; }
void set_ptr(int* ptr) { ptr_ = ptr; ++*ptr_; }
int SomeMeth(int x) { return x; }
private:
int* ptr_;
DISALLOW_COPY_AND_ASSIGN(ConDecLogger);
};
} // namespace
TEST(ScopedPtrTest, ScopedPtr) {
int constructed = 0;
{
scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed));
EXPECT_EQ(1, constructed);
EXPECT_TRUE(scoper.get());
EXPECT_EQ(10, scoper->SomeMeth(10));
EXPECT_EQ(10, scoper.get()->SomeMeth(10));
EXPECT_EQ(10, (*scoper).SomeMeth(10));
}
EXPECT_EQ(0, constructed);
// Test reset() and release()
{
scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed));
EXPECT_EQ(1, constructed);
EXPECT_TRUE(scoper.get());
scoper.reset(new ConDecLogger(&constructed));
EXPECT_EQ(1, constructed);
EXPECT_TRUE(scoper.get());
scoper.reset();
EXPECT_EQ(0, constructed);
EXPECT_FALSE(scoper.get());
scoper.reset(new ConDecLogger(&constructed));
EXPECT_EQ(1, constructed);
EXPECT_TRUE(scoper.get());
ConDecLogger* take = scoper.release();
EXPECT_EQ(1, constructed);
EXPECT_FALSE(scoper.get());
delete take;
EXPECT_EQ(0, constructed);
scoper.reset(new ConDecLogger(&constructed));
EXPECT_EQ(1, constructed);
EXPECT_TRUE(scoper.get());
}
EXPECT_EQ(0, constructed);
// Test swap(), == and !=
{
scoped_ptr<ConDecLogger> scoper1;
scoped_ptr<ConDecLogger> scoper2;
EXPECT_TRUE(scoper1 == scoper2.get());
EXPECT_FALSE(scoper1 != scoper2.get());
ConDecLogger* logger = new ConDecLogger(&constructed);
scoper1.reset(logger);
EXPECT_EQ(logger, scoper1.get());
EXPECT_FALSE(scoper2.get());
EXPECT_FALSE(scoper1 == scoper2.get());
EXPECT_TRUE(scoper1 != scoper2.get());
scoper2.swap(scoper1);
EXPECT_EQ(logger, scoper2.get());
EXPECT_FALSE(scoper1.get());
EXPECT_FALSE(scoper1 == scoper2.get());
EXPECT_TRUE(scoper1 != scoper2.get());
}
EXPECT_EQ(0, constructed);
}
TEST(ScopedPtrTest, ScopedArray) {
static const int kNumLoggers = 12;
int constructed = 0;
{
scoped_array<ConDecLogger> scoper(new ConDecLogger[kNumLoggers]);
EXPECT_TRUE(scoper.get());
EXPECT_EQ(&scoper[0], scoper.get());
for (int i = 0; i < kNumLoggers; ++i) {
scoper[i].set_ptr(&constructed);
}
EXPECT_EQ(12, constructed);
EXPECT_EQ(10, scoper.get()->SomeMeth(10));
EXPECT_EQ(10, scoper[2].SomeMeth(10));
}
EXPECT_EQ(0, constructed);
// Test reset() and release()
{
scoped_array<ConDecLogger> scoper;
EXPECT_FALSE(scoper.get());
EXPECT_FALSE(scoper.release());
EXPECT_FALSE(scoper.get());
scoper.reset();
EXPECT_FALSE(scoper.get());
scoper.reset(new ConDecLogger[kNumLoggers]);
for (int i = 0; i < kNumLoggers; ++i) {
scoper[i].set_ptr(&constructed);
}
EXPECT_EQ(12, constructed);
scoper.reset();
EXPECT_EQ(0, constructed);
scoper.reset(new ConDecLogger[kNumLoggers]);
for (int i = 0; i < kNumLoggers; ++i) {
scoper[i].set_ptr(&constructed);
}
EXPECT_EQ(12, constructed);
ConDecLogger* ptr = scoper.release();
EXPECT_EQ(12, constructed);
delete[] ptr;
EXPECT_EQ(0, constructed);
}
EXPECT_EQ(0, constructed);
// Test swap(), == and !=
{
scoped_array<ConDecLogger> scoper1;
scoped_array<ConDecLogger> scoper2;
EXPECT_TRUE(scoper1 == scoper2.get());
EXPECT_FALSE(scoper1 != scoper2.get());
ConDecLogger* loggers = new ConDecLogger[kNumLoggers];
for (int i = 0; i < kNumLoggers; ++i) {
loggers[i].set_ptr(&constructed);
}
scoper1.reset(loggers);
EXPECT_EQ(loggers, scoper1.get());
EXPECT_FALSE(scoper2.get());
EXPECT_FALSE(scoper1 == scoper2.get());
EXPECT_TRUE(scoper1 != scoper2.get());
scoper2.swap(scoper1);
EXPECT_EQ(loggers, scoper2.get());
EXPECT_FALSE(scoper1.get());
EXPECT_FALSE(scoper1 == scoper2.get());
EXPECT_TRUE(scoper1 != scoper2.get());
}
EXPECT_EQ(0, constructed);
}
// TODO scoped_ptr_malloc
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