1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
7 #include "base/memory/linked_ptr.h"
8 #include "base/strings/stringprintf.h"
9 #include "testing/gtest/include/gtest/gtest.h"
17 // Class which tracks allocation/deallocation
19 A(): mynum(num++) { history += base::StringPrintf("A%d ctor\n", mynum); }
20 virtual ~A() { history += base::StringPrintf("A%d dtor\n", mynum); }
21 virtual void Use() { history += base::StringPrintf("A%d use\n", mynum); }
27 B() { history += base::StringPrintf("B%d ctor\n", mynum); }
28 ~B() override { history += base::StringPrintf("B%d dtor\n", mynum); }
29 void Use() override { history += base::StringPrintf("B%d use\n", mynum); }
34 TEST(LinkedPtrTest, Test) {
36 linked_ptr<A> a0, a1, a2;
39 ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
40 ASSERT_EQ(a1.get(), static_cast<A*>(NULL));
41 ASSERT_EQ(a2.get(), static_cast<A*>(NULL));
42 ASSERT_TRUE(a0 == NULL);
43 ASSERT_TRUE(a1 == NULL);
44 ASSERT_TRUE(a2 == NULL);
47 linked_ptr<A> a3(new A);
49 ASSERT_TRUE(a0 == a3);
50 ASSERT_TRUE(a0 != NULL);
51 ASSERT_TRUE(a0.get() == a3);
52 ASSERT_TRUE(a0 == a3.get());
55 linked_ptr<A> a5(new A);
56 ASSERT_TRUE(a5.get() != a3);
57 ASSERT_TRUE(a5 != a3.get());
59 linked_ptr<B> b0(new B);
61 ASSERT_TRUE(b0 == a6);
62 ASSERT_TRUE(a6 == b0);
63 ASSERT_TRUE(b0 != NULL);