googlemock/test/gmock_leak_test_.cc

0001 // Copyright 2009, Google Inc.
0002 // All rights reserved.
0003 //
0004 // Redistribution and use in source and binary forms, with or without
0005 // modification, are permitted provided that the following conditions are
0006 // met:
0007 //
0008 //     * Redistributions of source code must retain the above copyright
0009 // notice, this list of conditions and the following disclaimer.
0010 //     * Redistributions in binary form must reproduce the above
0011 // copyright notice, this list of conditions and the following disclaimer
0012 // in the documentation and/or other materials provided with the
0013 // distribution.
0014 //     * Neither the name of Google Inc. nor the names of its
0015 // contributors may be used to endorse or promote products derived from
0016 // this software without specific prior written permission.
0017 //
0018 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
0019 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
0020 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
0021 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
0022 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
0023 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
0024 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
0025 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
0026 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0027 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
0028 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0029 //
0030 // Author: wan@google.com (Zhanyong Wan)
0031
0032 // Google Mock - a framework for writing C++ mock classes.
0033 //
0034 // This program is for verifying that a leaked mock object can be
0035 // caught by Google Mock's leak detector.
0036
0037 #include "gmock/gmock.h"
0038
0039 namespace {
0040
0041 using ::testing::Return;
0042
0043 class FooInterface {
0044  public:
0045   virtual ~FooInterface() {}
0046   virtual void DoThis() = 0;
0047 };
0048
0049 class MockFoo : public FooInterface {
0050  public:
0051   MockFoo() {}
0052
0053   MOCK_METHOD0(DoThis, void());
0054
0055  private:
0056   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
0057 };
0058
0059 TEST(LeakTest, LeakedMockWithExpectCallCausesFailureWhenLeakCheckingIsEnabled) {
0060   MockFoo* foo = new MockFoo;
0061
0062   EXPECT_CALL(*foo, DoThis());
0063   foo->DoThis();
0064
0065   // In order to test the leak detector, we deliberately leak foo.
0066
0067   // Makes sure Google Mock's leak detector can change the exit code
0068   // to 1 even when the code is already exiting with 0.
0069   exit(0);
0070 }
0071
0072 TEST(LeakTest, LeakedMockWithOnCallCausesFailureWhenLeakCheckingIsEnabled) {
0073   MockFoo* foo = new MockFoo;
0074
0075   ON_CALL(*foo, DoThis()).WillByDefault(Return());
0076
0077   // In order to test the leak detector, we deliberately leak foo.
0078
0079   // Makes sure Google Mock's leak detector can change the exit code
0080   // to 1 even when the code is already exiting with 0.
0081   exit(0);
0082 }
0083
0084 TEST(LeakTest, CatchesMultipleLeakedMockObjects) {
0085   MockFoo* foo1 = new MockFoo;
0086   MockFoo* foo2 = new MockFoo;
0087
0088   ON_CALL(*foo1, DoThis()).WillByDefault(Return());
0089   EXPECT_CALL(*foo2, DoThis());
0090   foo2->DoThis();
0091
0092   // In order to test the leak detector, we deliberately leak foo1 and
0093   // foo2.
0094
0095   // Makes sure Google Mock's leak detector can change the exit code
0096   // to 1 even when the code is already exiting with 0.
0097   exit(0);
0098 }
0099
0100 }  // namespace