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  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 iff 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_ == NULL) {
  60.       premature_exit_file_path_ = "";
  61.     }
  62.   }
  63.  
  64.   // Returns true iff 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.       // If the file exists, crash the process such that the main test
  86.       // process will catch the (expected) crash and report a success;
  87.       // otherwise don't crash, which will cause the main test process
  88.       // to report that the death test has failed.
  89.       if (PrematureExitFileExists()) {
  90.         exit(1);
  91.       }
  92.     }, "");
  93. }
  94.  
  95. // Tests that the premature-exit file exists during the execution of a
  96. // normal (non-death) test.
  97. TEST_F(PrematureExitTest, PrematureExitFileExistsDuringTestExecution) {
  98.   if (*premature_exit_file_path_ == '\0') {
  99.     return;
  100.   }
  101.  
  102.   EXPECT_TRUE(PrematureExitFileExists())
  103.       << " file " << premature_exit_file_path_
  104.       << " should exist during test execution, but doesn't.";
  105. }
  106.  
  107. }  // namespace
  108.  
  109. int main(int argc, char **argv) {
  110.   InitGoogleTest(&argc, argv);
  111.   const int exit_code = RUN_ALL_TESTS();
  112.  
  113.   // Test that the premature-exit file is deleted upon return from
  114.   // RUN_ALL_TESTS().
  115.   const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE");
  116.   if (filepath != NULL && *filepath != '\0') {
  117.     if (PrematureExitTest::FileExists(filepath)) {
  118.       printf(
  119.           "File %s shouldn't exist after the test program finishes, but does.",
  120.           filepath);
  121.       return 1;
  122.     }
  123.   }
  124.  
  125.   return exit_code;
  126. }
  127.