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29 // Author: vladl@google.com (Vlad Losev)
31 // This sample shows how to use Google Test listener API to implement
32 // an alternative console output and how to use the UnitTest reflection API
33 // to enumerate test cases and tests and to inspect their results.
37 #include "gtest/gtest.h"
39 using ::testing::EmptyTestEventListener;
40 using ::testing::InitGoogleTest;
41 using ::testing::Test;
42 using ::testing::TestCase;
43 using ::testing::TestEventListeners;
44 using ::testing::TestInfo;
45 using ::testing::TestPartResult;
46 using ::testing::UnitTest;
50 // Provides alternative output mode which produces minimal amount of
51 // information about tests.
52 class TersePrinter : public EmptyTestEventListener {
54 // Called before any test activity starts.
55 virtual void OnTestProgramStart(const UnitTest& /* unit_test */) {}
57 // Called after all test activities have ended.
58 virtual void OnTestProgramEnd(const UnitTest& unit_test) {
59 fprintf(stdout, "TEST %s\n", unit_test.Passed() ? "PASSED" : "FAILED");
63 // Called before a test starts.
64 virtual void OnTestStart(const TestInfo& test_info) {
66 "*** Test %s.%s starting.\n",
67 test_info.test_case_name(),
72 // Called after a failed assertion or a SUCCEED() invocation.
73 virtual void OnTestPartResult(const TestPartResult& test_part_result) {
76 test_part_result.failed() ? "*** Failure" : "Success",
77 test_part_result.file_name(),
78 test_part_result.line_number(),
79 test_part_result.summary());
83 // Called after a test ends.
84 virtual void OnTestEnd(const TestInfo& test_info) {
86 "*** Test %s.%s ending.\n",
87 test_info.test_case_name(),
91 }; // class TersePrinter
93 TEST(CustomOutputTest, PrintsMessage) {
94 printf("Printing something from the test body...\n");
97 TEST(CustomOutputTest, Succeeds) {
98 SUCCEED() << "SUCCEED() has been invoked from here";
101 TEST(CustomOutputTest, Fails) {
103 << "This test fails in order to demonstrate alternative failure messages";
108 int main(int argc, char **argv) {
109 InitGoogleTest(&argc, argv);
111 bool terse_output = false;
112 if (argc > 1 && strcmp(argv[1], "--terse_output") == 0 )
115 printf("%s\n", "Run this program with --terse_output to change the way "
116 "it prints its output.");
118 UnitTest& unit_test = *UnitTest::GetInstance();
120 // If we are given the --terse_output command line flag, suppresses the
121 // standard output and attaches own result printer.
123 TestEventListeners& listeners = unit_test.listeners();
125 // Removes the default console output listener from the list so it will
126 // not receive events from Google Test and won't print any output. Since
127 // this operation transfers ownership of the listener to the caller we
128 // have to delete it as well.
129 delete listeners.Release(listeners.default_result_printer());
131 // Adds the custom output listener to the list. It will now receive
132 // events from Google Test and print the alternative output. We don't
133 // have to worry about deleting it since Google Test assumes ownership
134 // over it after adding it to the list.
135 listeners.Append(new TersePrinter);
137 int ret_val = RUN_ALL_TESTS();
139 // This is an example of using the UnitTest reflection API to inspect test
140 // results. Here we discount failures from the tests we expected to fail.
141 int unexpectedly_failed_tests = 0;
142 for (int i = 0; i < unit_test.total_test_case_count(); ++i) {
143 const TestCase& test_case = *unit_test.GetTestCase(i);
144 for (int j = 0; j < test_case.total_test_count(); ++j) {
145 const TestInfo& test_info = *test_case.GetTestInfo(j);
146 // Counts failed tests that were not meant to fail (those without
147 // 'Fails' in the name).
148 if (test_info.result()->Failed() &&
149 strcmp(test_info.name(), "Fails") != 0) {
150 unexpectedly_failed_tests++;
155 // Test that were meant to fail should not affect the test program outcome.
156 if (unexpectedly_failed_tests == 0)