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R9484/googletest/test/googletest-linked-ptr-test.cc
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googletest-linked-ptr-test.cc
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// Copyright 2003, 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.
//
// Authors: Dan Egnor (egnor@google.com)
// Ported to Windows: Vadim Berman (vadimb@google.com)
#include "gtest/internal/gtest-linked_ptr.h"
#include <stdlib.h>
#include "gtest/gtest.h"
namespace {
using testing::Message;
using testing::internal::linked_ptr;
int num;
Message* history = NULL;
// Class which tracks allocation/deallocation
class A {
public:
A(): mynum(num++) { *history << "A" << mynum << " ctor\n"; }
virtual ~A() { *history << "A" << mynum << " dtor\n"; }
virtual void Use() { *history << "A" << mynum << " use\n"; }
protected:
int mynum;
};
// Subclass
class B : public A {
public:
B() { *history << "B" << mynum << " ctor\n"; }
~B() { *history << "B" << mynum << " dtor\n"; }
virtual void Use() { *history << "B" << mynum << " use\n"; }
};
class LinkedPtrTest : public testing::Test {
public:
LinkedPtrTest() {
num = 0;
history = new Message;
}
virtual ~LinkedPtrTest() {
delete history;
history = NULL;
}
};
TEST_F(LinkedPtrTest, GeneralTest) {
{
linked_ptr<A> a0, a1, a2;
// Use explicit function call notation here to suppress self-assign warning.
a0.operator=(a0);
a1 = a2;
ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
ASSERT_EQ(a1.get(), static_cast<A*>(NULL));
ASSERT_EQ(a2.get(), static_cast<A*>(NULL));
ASSERT_TRUE(a0 == NULL);
ASSERT_TRUE(a1 == NULL);
ASSERT_TRUE(a2 == NULL);
{
linked_ptr<A> a3(new A);
a0 = a3;
ASSERT_TRUE(a0 == a3);
ASSERT_TRUE(a0 != NULL);
ASSERT_TRUE(a0.get() == a3);
ASSERT_TRUE(a0 == a3.get());
linked_ptr<A> a4(a0);
a1 = a4;
linked_ptr<A> a5(new A);
ASSERT_TRUE(a5.get() != a3);
ASSERT_TRUE(a5 != a3.get());
a2 = a5;
linked_ptr<B> b0(new B);
linked_ptr<A> a6(b0);
ASSERT_TRUE(b0 == a6);
ASSERT_TRUE(a6 == b0);
ASSERT_TRUE(b0 != NULL);
a5 = b0;
a5 = b0;
a3->Use();
a4->Use();
a5->Use();
a6->Use();
b0->Use();
(*b0).Use();
b0.get()->Use();
}
a0->Use();
a1->Use();
a2->Use();
a1 = a2;
a2.reset(new A);
a0.reset();
linked_ptr<A> a7;
}
ASSERT_STREQ(
"A0 ctor\n"
"A1 ctor\n"
"A2 ctor\n"
"B2 ctor\n"
"A0 use\n"
"A0 use\n"
"B2 use\n"
"B2 use\n"
"B2 use\n"
"B2 use\n"
"B2 use\n"
"B2 dtor\n"
"A2 dtor\n"
"A0 use\n"
"A0 use\n"
"A1 use\n"
"A3 ctor\n"
"A0 dtor\n"
"A3 dtor\n"
"A1 dtor\n",
history->GetString().c_str());
}
} // Unnamed namespace
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