summaryrefslogtreecommitdiff
path: root/xpcom/tests/gtest/TestAutoRef.cpp
blob: 49042e8fbd3f578d5c25a08c5201ab8830f216c9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:ts=4:et:sw=4:
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsAutoRef.h"
#include "gtest/gtest.h"

struct TestObjectA {
public:
  TestObjectA() : mRefCnt(0) {
  }

  ~TestObjectA() {
    EXPECT_EQ(mRefCnt, 0);
  }

public:
  int mRefCnt;
};

template <>
class nsAutoRefTraits<TestObjectA> : public nsPointerRefTraits<TestObjectA>
{
public:
  static int mTotalRefsCnt;

  static void Release(TestObjectA *ptr) {
    ptr->mRefCnt--;
    if (ptr->mRefCnt == 0) {
      delete ptr;
    }
  }

  static void AddRef(TestObjectA *ptr) {
    ptr->mRefCnt++;
  }
};

int nsAutoRefTraits<TestObjectA>::mTotalRefsCnt = 0;

TEST(AutoRef, Assignment)
{
  {
    nsCountedRef<TestObjectA> a(new TestObjectA());
    ASSERT_EQ(a->mRefCnt, 1);

    nsCountedRef<TestObjectA> b;
    ASSERT_EQ(b.get(), nullptr);

    a.swap(b);
    ASSERT_EQ(b->mRefCnt, 1);
    ASSERT_EQ(a.get(), nullptr);
  }
}