Method GetInstance

src/gtest/gtest-all.cpp:4936–4955

Gets the singleton UnitTest object. The first time this method is called, a UnitTest object is constructed and returned. Consecutive calls will return the same object. We don't protect this under mutex_ as a user is not supposed to call this before main() starts, from which point on the return value will never change.

// call this before main() starts, from which point on the return
// value will never change.
UnitTest * UnitTest::GetInstance() {
  // When compiled with MSVC 7.1 in optimized mode, destroying the
  // UnitTest object upon exiting the program messes up the exit code,
  // causing successful tests to appear failed.  We have to use a
  // different implementation in this case to bypass the compiler bug.
  // This implementation makes the compiler happy, at the cost of
  // leaking the UnitTest object.

  // CodeGear C++Builder insists on a public destructor for the
  // default implementation.  Use this implementation to keep good OO
  // design with private destructor.

#if (_MSC_VER == 1310 && !defined(_DEBUG)) || defined(__BORLANDC__)
  static UnitTest* const instance = new UnitTest;
  return instance;
#else
  static UnitTest instance;
  return &instance;
#endif  // (_MSC_VER == 1310 && !defined(_DEBUG)) || defined(__BORLANDC__)
}

// Gets the number of successful test cases.
int UnitTest::successful_test_case_count() const {