source: gtest-1.7.0/test/gtest_premature_exit_test.cc@ 12756

Last change on this file since 12756 was 12746, checked in by hock@…, 11 years ago

integrated the Google Testing Framework (gtest)

and wrote an Hello World test, to ensure the framework is working..

File size: 4.7 KB
Line 
1// Copyright 2013, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8// * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10// * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14// * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29//
30// Author: wan@google.com (Zhanyong Wan)
31//
32// Tests that Google Test manipulates the premature-exit-detection
33// file correctly.
34
35#include <stdio.h>
36
37#include "gtest/gtest.h"
38
39using ::testing::InitGoogleTest;
40using ::testing::Test;
41using ::testing::internal::posix::GetEnv;
42using ::testing::internal::posix::Stat;
43using ::testing::internal::posix::StatStruct;
44
45namespace {
46
47// Is the TEST_PREMATURE_EXIT_FILE environment variable expected to be
48// set?
49const bool kTestPrematureExitFileEnvVarShouldBeSet = false;
50
51class PrematureExitTest : public Test {
52 public:
53 // Returns true iff the given file exists.
54 static bool FileExists(const char* filepath) {
55 StatStruct stat;
56 return Stat(filepath, &stat) == 0;
57 }
58
59 protected:
60 PrematureExitTest() {
61 premature_exit_file_path_ = GetEnv("TEST_PREMATURE_EXIT_FILE");
62
63 // Normalize NULL to "" for ease of handling.
64 if (premature_exit_file_path_ == NULL) {
65 premature_exit_file_path_ = "";
66 }
67 }
68
69 // Returns true iff the premature-exit file exists.
70 bool PrematureExitFileExists() const {
71 return FileExists(premature_exit_file_path_);
72 }
73
74 const char* premature_exit_file_path_;
75};
76
77typedef PrematureExitTest PrematureExitDeathTest;
78
79// Tests that:
80// - the premature-exit file exists during the execution of a
81// death test (EXPECT_DEATH*), and
82// - a death test doesn't interfere with the main test process's
83// handling of the premature-exit file.
84TEST_F(PrematureExitDeathTest, FileExistsDuringExecutionOfDeathTest) {
85 if (*premature_exit_file_path_ == '\0') {
86 return;
87 }
88
89 EXPECT_DEATH_IF_SUPPORTED({
90 // If the file exists, crash the process such that the main test
91 // process will catch the (expected) crash and report a success;
92 // otherwise don't crash, which will cause the main test process
93 // to report that the death test has failed.
94 if (PrematureExitFileExists()) {
95 exit(1);
96 }
97 }, "");
98}
99
100// Tests that TEST_PREMATURE_EXIT_FILE is set where it's expected to
101// be set.
102TEST_F(PrematureExitTest, TestPrematureExitFileEnvVarIsSet) {
103 if (kTestPrematureExitFileEnvVarShouldBeSet) {
104 const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE");
105 ASSERT_TRUE(filepath != NULL);
106 ASSERT_NE(*filepath, '\0');
107 }
108}
109
110// Tests that the premature-exit file exists during the execution of a
111// normal (non-death) test.
112TEST_F(PrematureExitTest, PrematureExitFileExistsDuringTestExecution) {
113 if (*premature_exit_file_path_ == '\0') {
114 return;
115 }
116
117 EXPECT_TRUE(PrematureExitFileExists())
118 << " file " << premature_exit_file_path_
119 << " should exist during test execution, but doesn't.";
120}
121
122} // namespace
123
124int main(int argc, char **argv) {
125 InitGoogleTest(&argc, argv);
126 const int exit_code = RUN_ALL_TESTS();
127
128 // Test that the premature-exit file is deleted upon return from
129 // RUN_ALL_TESTS().
130 const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE");
131 if (filepath != NULL && *filepath != '\0') {
132 if (PrematureExitTest::FileExists(filepath)) {
133 printf(
134 "File %s shouldn't exist after the test program finishes, but does.",
135 filepath);
136 return 1;
137 }
138 }
139
140 return exit_code;
141}
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