152 lines
3.9 KiB
C++
152 lines
3.9 KiB
C++
// Copyright 2003, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include "gtest/internal/gtest-linked_ptr.h"
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#include "gtest/gtest.h"
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namespace {
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using testing::Message;
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using testing::internal::linked_ptr;
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int num;
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Message* history = NULL;
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// Class which tracks allocation/deallocation
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class A {
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public:
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A(): mynum(num++) { *history << "A" << mynum << " ctor\n"; }
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virtual ~A() { *history << "A" << mynum << " dtor\n"; }
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virtual void Use() { *history << "A" << mynum << " use\n"; }
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protected:
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int mynum;
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};
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// Subclass
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class B : public A {
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public:
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B() { *history << "B" << mynum << " ctor\n"; }
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~B() { *history << "B" << mynum << " dtor\n"; }
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virtual void Use() { *history << "B" << mynum << " use\n"; }
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};
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class LinkedPtrTest : public testing::Test {
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public:
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LinkedPtrTest() {
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num = 0;
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history = new Message;
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}
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virtual ~LinkedPtrTest() {
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delete history;
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history = NULL;
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}
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};
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TEST_F(LinkedPtrTest, GeneralTest) {
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{
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linked_ptr<A> a0, a1, a2;
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// Use explicit function call notation here to suppress self-assign warning.
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a0.operator=(a0);
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a1 = a2;
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ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
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ASSERT_EQ(a1.get(), static_cast<A*>(NULL));
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ASSERT_EQ(a2.get(), static_cast<A*>(NULL));
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ASSERT_TRUE(a0 == NULL);
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ASSERT_TRUE(a1 == NULL);
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ASSERT_TRUE(a2 == NULL);
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{
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linked_ptr<A> a3(new A);
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a0 = a3;
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ASSERT_TRUE(a0 == a3);
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ASSERT_TRUE(a0 != NULL);
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ASSERT_TRUE(a0.get() == a3);
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ASSERT_TRUE(a0 == a3.get());
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linked_ptr<A> a4(a0);
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a1 = a4;
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linked_ptr<A> a5(new A);
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ASSERT_TRUE(a5.get() != a3);
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ASSERT_TRUE(a5 != a3.get());
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a2 = a5;
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linked_ptr<B> b0(new B);
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linked_ptr<A> a6(b0);
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ASSERT_TRUE(b0 == a6);
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ASSERT_TRUE(a6 == b0);
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ASSERT_TRUE(b0 != NULL);
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a5 = b0;
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a5 = b0;
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a3->Use();
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a4->Use();
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a5->Use();
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a6->Use();
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b0->Use();
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(*b0).Use();
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b0.get()->Use();
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}
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a0->Use();
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a1->Use();
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a2->Use();
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a1 = a2;
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a2.reset(new A);
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a0.reset();
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linked_ptr<A> a7;
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}
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ASSERT_STREQ(
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"A0 ctor\n"
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"A1 ctor\n"
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"A2 ctor\n"
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"B2 ctor\n"
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"A0 use\n"
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"A0 use\n"
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"B2 use\n"
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"B2 use\n"
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"B2 use\n"
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"B2 use\n"
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"B2 use\n"
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"B2 dtor\n"
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"A2 dtor\n"
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"A0 use\n"
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"A0 use\n"
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"A1 use\n"
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"A3 ctor\n"
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"A0 dtor\n"
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"A3 dtor\n"
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"A1 dtor\n",
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history->GetString().c_str());
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}
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} // Unnamed namespace
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