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 47class PrematureExitTest : public Test { 48 public: 49 // Returns true iff the given file exists. 50 static bool FileExists(const char* filepath) { 51 StatStruct stat; 52 return Stat(filepath, &stat) == 0; 53 } 54 55 protected: 56 PrematureExitTest() { 57 premature_exit_file_path_ = GetEnv("TEST_PREMATURE_EXIT_FILE"); 58 59 // Normalize NULL to "" for ease of handling. 60 if (premature_exit_file_path_ == NULL) { 61 premature_exit_file_path_ = ""; 62 } 63 } 64 65 // Returns true iff the premature-exit file exists. 66 bool PrematureExitFileExists() const { 67 return FileExists(premature_exit_file_path_); 68 } 69 70 const char* premature_exit_file_path_; 71}; 72 73typedef PrematureExitTest PrematureExitDeathTest; 74 75// Tests that: 76// - the premature-exit file exists during the execution of a 77// death test (EXPECT_DEATH*), and 78// - a death test doesn't interfere with the main test process's 79// handling of the premature-exit file. 80TEST_F(PrematureExitDeathTest, FileExistsDuringExecutionOfDeathTest) { 81 if (*premature_exit_file_path_ == '\0') { 82 return; 83 } 84 85 EXPECT_DEATH_IF_SUPPORTED({ 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// Tests that the premature-exit file exists during the execution of a 97// normal (non-death) test. 98TEST_F(PrematureExitTest, PrematureExitFileExistsDuringTestExecution) { 99 if (*premature_exit_file_path_ == '\0') { 100 return; 101 } 102 103 EXPECT_TRUE(PrematureExitFileExists()) 104 << " file " << premature_exit_file_path_ 105 << " should exist during test execution, but doesn't."; 106} 107 108} // namespace 109 110int main(int argc, char **argv) { 111 InitGoogleTest(&argc, argv); 112 const int exit_code = RUN_ALL_TESTS(); 113 114 // Test that the premature-exit file is deleted upon return from 115 // RUN_ALL_TESTS(). 116 const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE"); 117 if (filepath != NULL && *filepath != '\0') { 118 if (PrematureExitTest::FileExists(filepath)) { 119 printf( 120 "File %s shouldn't exist after the test program finishes, but does.", 121 filepath); 122 return 1; 123 } 124 } 125 126 return exit_code; 127} 128