ceph/src/spawn/test/dependency/googletest/googletest/test/gtest_premature_exit_test.cc

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  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 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 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 != nullptr && *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 }