def test_report(self):
     #create mock
     mockFileProvider = self.mock()
     mockFileWrapper = self.mockFileProvider('report.txt', 'w')
     #replay        
     self.replay()        
     #Call the report method with mocked filewrapper        
     numbers=range(100)        
     FizzBuzz.report(self.numbers,self.mockFileWrapper)                
     #verify        
     self.verify()