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1 | // Copyright 2009 Google Inc. All Rights Reserved. |
2 | // | |
3 | // Redistribution and use in source and binary forms, with or without | |
4 | // modification, are permitted provided that the following conditions are | |
5 | // met: | |
6 | // | |
7 | // * Redistributions of source code must retain the above copyright | |
8 | // notice, this list of conditions and the following disclaimer. | |
9 | // * Redistributions in binary form must reproduce the above | |
10 | // copyright notice, this list of conditions and the following disclaimer | |
11 | // in the documentation and/or other materials provided with the | |
12 | // distribution. | |
13 | // * Neither the name of Google Inc. nor the names of its | |
14 | // contributors may be used to endorse or promote products derived from | |
15 | // this software without specific prior written permission. | |
16 | // | |
17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | // | |
29 | // Author: vladl@google.com (Vlad Losev) | |
30 | ||
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. | |
34 | ||
35 | #include <stdio.h> | |
36 | ||
37 | #include "gtest/gtest.h" | |
38 | ||
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; | |
47 | ||
48 | namespace { | |
49 | ||
50 | // Provides alternative output mode which produces minimal amount of | |
51 | // information about tests. | |
52 | class TersePrinter : public EmptyTestEventListener { | |
53 | private: | |
54 | // Called before any test activity starts. | |
55 | virtual void OnTestProgramStart(const UnitTest& /* unit_test */) {} | |
56 | ||
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"); | |
60 | fflush(stdout); | |
61 | } | |
62 | ||
63 | // Called before a test starts. | |
64 | virtual void OnTestStart(const TestInfo& test_info) { | |
65 | fprintf(stdout, | |
66 | "*** Test %s.%s starting.\n", | |
67 | test_info.test_case_name(), | |
68 | test_info.name()); | |
69 | fflush(stdout); | |
70 | } | |
71 | ||
72 | // Called after a failed assertion or a SUCCEED() invocation. | |
73 | virtual void OnTestPartResult(const TestPartResult& test_part_result) { | |
74 | fprintf(stdout, | |
75 | "%s in %s:%d\n%s\n", | |
76 | test_part_result.failed() ? "*** Failure" : "Success", | |
77 | test_part_result.file_name(), | |
78 | test_part_result.line_number(), | |
79 | test_part_result.summary()); | |
80 | fflush(stdout); | |
81 | } | |
82 | ||
83 | // Called after a test ends. | |
84 | virtual void OnTestEnd(const TestInfo& test_info) { | |
85 | fprintf(stdout, | |
86 | "*** Test %s.%s ending.\n", | |
87 | test_info.test_case_name(), | |
88 | test_info.name()); | |
89 | fflush(stdout); | |
90 | } | |
91 | }; // class TersePrinter | |
92 | ||
93 | TEST(CustomOutputTest, PrintsMessage) { | |
94 | printf("Printing something from the test body...\n"); | |
95 | } | |
96 | ||
97 | TEST(CustomOutputTest, Succeeds) { | |
98 | SUCCEED() << "SUCCEED() has been invoked from here"; | |
99 | } | |
100 | ||
101 | TEST(CustomOutputTest, Fails) { | |
102 | EXPECT_EQ(1, 2) | |
103 | << "This test fails in order to demonstrate alternative failure messages"; | |
104 | } | |
105 | ||
106 | } // namespace | |
107 | ||
108 | int main(int argc, char **argv) { | |
109 | InitGoogleTest(&argc, argv); | |
110 | ||
111 | bool terse_output = false; | |
112 | if (argc > 1 && strcmp(argv[1], "--terse_output") == 0 ) | |
113 | terse_output = true; | |
114 | else | |
115 | printf("%s\n", "Run this program with --terse_output to change the way " | |
116 | "it prints its output."); | |
117 | ||
118 | UnitTest& unit_test = *UnitTest::GetInstance(); | |
119 | ||
120 | // If we are given the --terse_output command line flag, suppresses the | |
121 | // standard output and attaches own result printer. | |
122 | if (terse_output) { | |
123 | TestEventListeners& listeners = unit_test.listeners(); | |
124 | ||
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()); | |
130 | ||
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); | |
136 | } | |
137 | int ret_val = RUN_ALL_TESTS(); | |
138 | ||
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++; | |
151 | } | |
152 | } | |
153 | } | |
154 | ||
155 | // Test that were meant to fail should not affect the test program outcome. | |
156 | if (unexpectedly_failed_tests == 0) | |
157 | ret_val = 0; | |
158 | ||
159 | return ret_val; | |
160 | } |