Changeset View
Changeset View
Standalone View
Standalone View
google/googletest/dist/googletest/samples/sample10_unittest.cc
- This file was added.
Property | Old Value | New Value |
---|---|---|
svn:eol-style | null | native \ No newline at end of property |
svn:keywords | null | FreeBSD=%H \ No newline at end of property |
svn:mime-type | null | text/plain \ No newline at end of property |
// Copyright 2009 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. | |||||
// This sample shows how to use Google Test listener API to implement | |||||
// a primitive leak checker. | |||||
#include <stdio.h> | |||||
#include <stdlib.h> | |||||
#include "gtest/gtest.h" | |||||
using ::testing::EmptyTestEventListener; | |||||
using ::testing::InitGoogleTest; | |||||
using ::testing::Test; | |||||
using ::testing::TestEventListeners; | |||||
using ::testing::TestInfo; | |||||
using ::testing::TestPartResult; | |||||
using ::testing::UnitTest; | |||||
namespace { | |||||
// We will track memory used by this class. | |||||
class Water { | |||||
public: | |||||
// Normal Water declarations go here. | |||||
// operator new and operator delete help us control water allocation. | |||||
void* operator new(size_t allocation_size) { | |||||
allocated_++; | |||||
return malloc(allocation_size); | |||||
} | |||||
void operator delete(void* block, size_t /* allocation_size */) { | |||||
allocated_--; | |||||
free(block); | |||||
} | |||||
static int allocated() { return allocated_; } | |||||
private: | |||||
static int allocated_; | |||||
}; | |||||
int Water::allocated_ = 0; | |||||
// This event listener monitors how many Water objects are created and | |||||
// destroyed by each test, and reports a failure if a test leaks some Water | |||||
// objects. It does this by comparing the number of live Water objects at | |||||
// the beginning of a test and at the end of a test. | |||||
class LeakChecker : public EmptyTestEventListener { | |||||
private: | |||||
// Called before a test starts. | |||||
virtual void OnTestStart(const TestInfo& /* test_info */) { | |||||
initially_allocated_ = Water::allocated(); | |||||
} | |||||
// Called after a test ends. | |||||
virtual void OnTestEnd(const TestInfo& /* test_info */) { | |||||
int difference = Water::allocated() - initially_allocated_; | |||||
// You can generate a failure in any event handler except | |||||
// OnTestPartResult. Just use an appropriate Google Test assertion to do | |||||
// it. | |||||
EXPECT_LE(difference, 0) << "Leaked " << difference << " unit(s) of Water!"; | |||||
} | |||||
int initially_allocated_; | |||||
}; | |||||
TEST(ListenersTest, DoesNotLeak) { | |||||
Water* water = new Water; | |||||
delete water; | |||||
} | |||||
// This should fail when the --check_for_leaks command line flag is | |||||
// specified. | |||||
TEST(ListenersTest, LeaksWater) { | |||||
Water* water = new Water; | |||||
EXPECT_TRUE(water != NULL); | |||||
} | |||||
} // namespace | |||||
int main(int argc, char **argv) { | |||||
InitGoogleTest(&argc, argv); | |||||
bool check_for_leaks = false; | |||||
if (argc > 1 && strcmp(argv[1], "--check_for_leaks") == 0 ) | |||||
check_for_leaks = true; | |||||
else | |||||
printf("%s\n", "Run this program with --check_for_leaks to enable " | |||||
"custom leak checking in the tests."); | |||||
// If we are given the --check_for_leaks command line flag, installs the | |||||
// leak checker. | |||||
if (check_for_leaks) { | |||||
TestEventListeners& listeners = UnitTest::GetInstance()->listeners(); | |||||
// Adds the leak checker to the end of the test event listener list, | |||||
// after the default text output printer and the default XML report | |||||
// generator. | |||||
// | |||||
// The order is important - it ensures that failures generated in the | |||||
// leak checker's OnTestEnd() method are processed by the text and XML | |||||
// printers *before* their OnTestEnd() methods are called, such that | |||||
// they are attributed to the right test. Remember that a listener | |||||
// receives an OnXyzStart event *after* listeners preceding it in the | |||||
// list received that event, and receives an OnXyzEnd event *before* | |||||
// listeners preceding it. | |||||
// | |||||
// We don't need to worry about deleting the new listener later, as | |||||
// Google Test will do it. | |||||
listeners.Append(new LeakChecker); | |||||
} | |||||
return RUN_ALL_TESTS(); | |||||
} |