ceph/src/rapidjson/thirdparty/gtest/googletest/test/gtest_premature_exit_test.cc

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  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
  39 using ::testing::InitGoogleTest;
  40 using ::testing::Test;
  41 using ::testing::internal::posix::GetEnv;
  42 using ::testing::internal::posix::Stat;
  43 using ::testing::internal::posix::StatStruct;
  44
  45 namespace {
  46
  47 class 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
  73 typedef 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.
  80 TEST_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.
  98 TEST_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
 110 int 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 }