yaml-cpp

sample9_unittest.cc (5925B)

---

 // 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
 // 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.
   void OnTestProgramStart(const UnitTest& /* unit_test */) override {}
 
   // Called after all test activities have ended.
   void OnTestProgramEnd(const UnitTest& unit_test) override {
     fprintf(stdout, "TEST %s\n", unit_test.Passed() ? "PASSED" : "FAILED");
     fflush(stdout);
   }
 
   // Called before a test starts.
   void OnTestStart(const TestInfo& test_info) override {
     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.
   void OnTestPartResult(const TestPartResult& test_part_result) override {
     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.
   void OnTestEnd(const TestInfo& test_info) override {
     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_suite_count(); ++i) {
     const testing::TestSuite& test_suite = *unit_test.GetTestSuite(i);
     for (int j = 0; j < test_suite.total_test_count(); ++j) {
       const TestInfo& test_info = *test_suite.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;
 }