Test Driven Development

~cpp

int gNumTests = 0;
int gNumFailures = 0;
void Assert(bool condition)
{
	++gNumTests;
	if(!condition)
	{
		++gNumFailures;
	}
}
#define Assert(cond)	AssertImpl(cond, #cond, __LINE__, __FILE__)

void AssertImpl( bool condition, const char* condStr, int lineNum, const char* fileName)
{
	++gNumTests;
	if(!condition)
	{
		++gNumFailures;
		printf("file %s', line %d, assert '%s' failed\n", fileName, (int)lineNum, condStr);
	}
}
void printTestResult() {
		printf("%d tests run, %d tests failed\n", (int)gNumTests,(int)gNumFailures);
}
int main(int argc, char* argv[])
{
	Assert(1==2);
	printTestResult();
	return 0;
}