__method = "METHOD"
def loadTestsFromTestCase(self, testCaseClass):
    
    """Return a suite of all tests cases contained in testCaseClass"""
    if issubclass(testCaseClass, suite.TestSuite):
        raise TypeError("Test cases should not be derived from TestSuite." \
                            " Maybe you meant to derive from TestCase?")
    testCaseNames = self.getTestCaseNames(testCaseClass)
    
    #=======================================================================
    # fix single test
    #=======================================================================        
    if testCaseNames:            
        if self.__method in os.environ.keys() and os.environ[self.__method] and os.environ[self.__method] in  testCaseNames:                
            testCaseNames = [os.environ[self.__method]]            
        
    if not testCaseNames and hasattr(testCaseClass, 'runTest'):
        testCaseNames = ['runTest']

    loaded_suite = self.suiteClass(map(testCaseClass, testCaseNames))
    
    return loaded_suite