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 // 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

 // an alternative console output and how to use the UnitTest reflection API

 // to enumerate test cases and tests and to inspect their results.

 #include <stdio.h>

 #include "gtest/gtest.h"

 using ::testing::EmptyTestEventListener;

 using ::testing::InitGoogleTest;

 using ::testing::Test;

 using ::testing::TestCase;

 using ::testing::TestEventListeners;

 using ::testing::TestInfo;

 using ::testing::TestPartResult;

 using ::testing::UnitTest;

 namespace {

 // Provides alternative output mode which produces minimal amount of

 // information about tests.

 class TersePrinter : public EmptyTestEventListener {

  private:

   // Called before any test activity starts.

   virtual void OnTestProgramStart(const UnitTest& /* unit_test */) {}

   // Called after all test activities have ended.

   virtual void OnTestProgramEnd(const UnitTest& unit_test) {

     fprintf(stdout, "TEST %s\n", unit_test.Passed() ? "PASSED" : "FAILED");

     fflush(stdout);

   }

   // Called before a test starts.

   virtual void OnTestStart(const TestInfo& test_info) {

     fprintf(stdout,

             "*** Test %s.%s starting.\n",

             test_info.test_case_name(),

             test_info.name());

     fflush(stdout);

   }

   // Called after a failed assertion or a SUCCEED() invocation.

   virtual void OnTestPartResult(const TestPartResult& test_part_result) {

     fprintf(stdout,

             "%s in %s:%d\n%s\n",

             test_part_result.failed() ? "*** Failure" : "Success",

             test_part_result.file_name(),

             test_part_result.line_number(),

             test_part_result.summary());

     fflush(stdout);

   }

   // Called after a test ends.

   virtual void OnTestEnd(const TestInfo& test_info) {

     fprintf(stdout,

             "*** Test %s.%s ending.\n",

             test_info.test_case_name(),

             test_info.name());

     fflush(stdout);

   }

 };  // class TersePrinter

 TEST(CustomOutputTest, PrintsMessage) {

   printf("Printing something from the test body...\n");

 }

 TEST(CustomOutputTest, Succeeds) {

   SUCCEED() << "SUCCEED() has been invoked from here";

 }

 TEST(CustomOutputTest, Fails) {

   EXPECT_EQ(1, 2)

       << "This test fails in order to demonstrate alternative failure messages";

 }

 }  // namespace

 int main(int argc, char **argv) {

   InitGoogleTest(&argc, argv);

   bool terse_output = false;

   if (argc > 1 && strcmp(argv[1], "--terse_output") == 0 )

     terse_output = true;

   else

     printf("%s\n", "Run this program with --terse_output to change the way "

            "it prints its output.");

   UnitTest& unit_test = *UnitTest::GetInstance();

   // If we are given the --terse_output command line flag, suppresses the

   // standard output and attaches own result printer.

   if (terse_output) {

     TestEventListeners& listeners = unit_test.listeners();

     // Removes the default console output listener from the list so it will

     // not receive events from Google Test and won't print any output. Since

     // this operation transfers ownership of the listener to the caller we

     // have to delete it as well.

     delete listeners.Release(listeners.default_result_printer());

     // Adds the custom output listener to the list. It will now receive

     // events from Google Test and print the alternative output. We don't

     // have to worry about deleting it since Google Test assumes ownership

     // over it after adding it to the list.

     listeners.Append(new TersePrinter);

   }

   int ret_val = RUN_ALL_TESTS();

   // This is an example of using the UnitTest reflection API to inspect test

   // results. Here we discount failures from the tests we expected to fail.

   int unexpectedly_failed_tests = 0;

   for (int i = 0; i < unit_test.total_test_case_count(); ++i) {

     const TestCase& test_case = *unit_test.GetTestCase(i);

     for (int j = 0; j < test_case.total_test_count(); ++j) {

       const TestInfo& test_info = *test_case.GetTestInfo(j);

       // Counts failed tests that were not meant to fail (those without

       // 'Fails' in the name).

       if (test_info.result()->Failed() &&

           strcmp(test_info.name(), "Fails") != 0) {

         unexpectedly_failed_tests++;

       }

     }

   }

   // Test that were meant to fail should not affect the test program outcome.

   if (unexpectedly_failed_tests == 0)

     ret_val = 0;

   return ret_val;

 }