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 // 31 // Tests that Google Test manipulates the premature-exit-detection 32 // file correctly. 33 34 #include <stdio.h> 35 36 #include "gtest/gtest.h" 37 38 using ::testing::InitGoogleTest; 39 using ::testing::Test; 40 using ::testing::internal::posix::GetEnv; 41 using ::testing::internal::posix::Stat; 42 using ::testing::internal::posix::StatStruct; 43 44 namespace { 45 46 class PrematureExitTest : public Test { 47 public: 48 // Returns true if and only if the given file exists. 49 static bool FileExists(const char* filepath) { 50 StatStruct stat; 51 return Stat(filepath, &stat) == 0; 52 } 53 54 protected: 55 PrematureExitTest() { 56 premature_exit_file_path_ = GetEnv("TEST_PREMATURE_EXIT_FILE"); 57 58 // Normalize NULL to "" for ease of handling. 59 if (premature_exit_file_path_ == nullptr) { 60 premature_exit_file_path_ = ""; 61 } 62 } 63 64 // Returns true if and only if the premature-exit file exists. 65 bool PrematureExitFileExists() const { 66 return FileExists(premature_exit_file_path_); 67 } 68 69 const char* premature_exit_file_path_; 70 }; 71 72 typedef PrematureExitTest PrematureExitDeathTest; 73 74 // Tests that: 75 // - the premature-exit file exists during the execution of a 76 // death test (EXPECT_DEATH*), and 77 // - a death test doesn't interfere with the main test process's 78 // handling of the premature-exit file. 79 TEST_F(PrematureExitDeathTest, FileExistsDuringExecutionOfDeathTest) { 80 if (*premature_exit_file_path_ == '\0') { 81 return; 82 } 83 84 EXPECT_DEATH_IF_SUPPORTED( 85 { 86 // If the file exists, crash the process such that the main test 87 // process will catch the (expected) crash and report a success; 88 // otherwise don't crash, which will cause the main test process 89 // to report that the death test has failed. 90 if (PrematureExitFileExists()) { 91 exit(1); 92 } 93 }, 94 ""); 95 } 96 97 // Tests that the premature-exit file exists during the execution of a 98 // normal (non-death) test. 99 TEST_F(PrematureExitTest, PrematureExitFileExistsDuringTestExecution) { 100 if (*premature_exit_file_path_ == '\0') { 101 return; 102 } 103 104 EXPECT_TRUE(PrematureExitFileExists()) 105 << " file " << premature_exit_file_path_ 106 << " should exist during test execution, but doesn't."; 107 } 108 109 } // namespace 110 111 int main(int argc, char** argv) { 112 InitGoogleTest(&argc, argv); 113 const int exit_code = RUN_ALL_TESTS(); 114 115 // Test that the premature-exit file is deleted upon return from 116 // RUN_ALL_TESTS(). 117 const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE"); 118 if (filepath != nullptr && *filepath != '\0') { 119 if (PrematureExitTest::FileExists(filepath)) { 120 printf( 121 "File %s shouldn't exist after the test program finishes, but does.", 122 filepath); 123 return 1; 124 } 125 } 126 127 return exit_code; 128 } 129