From fa9c8eaf4fe936f35dd95a1eecfbbb228494522d Mon Sep 17 00:00:00 2001 From: Jeff McGlynn Date: Mon, 18 Jun 2018 10:53:11 -0700 Subject: Squashed 'third_party/googletest/' content from commit ba96d0b1 git-subtree-dir: third_party/googletest git-subtree-split: ba96d0b1161f540656efdaed035b3c062b60e006 --- googletest/samples/sample10_unittest.cc | 140 ++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 googletest/samples/sample10_unittest.cc (limited to 'googletest/samples/sample10_unittest.cc') diff --git a/googletest/samples/sample10_unittest.cc b/googletest/samples/sample10_unittest.cc new file mode 100644 index 0000000..10aa762 --- /dev/null +++ b/googletest/samples/sample10_unittest.cc @@ -0,0 +1,140 @@ +// 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. +// +// Author: vladl@google.com (Vlad Losev) + +// This sample shows how to use Google Test listener API to implement +// a primitive leak checker. + +#include +#include + +#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(); +} -- cgit v1.2.3