def testReceiveNull(self):
'''The test function returns '-1' when receives a None value instead of a string.'''
self.assertEqual(countCharacters(None), -1)
def testReceiveNull(self):
'''The test function returns '-1' when receives a None value instead of a string.'''
self.assertEqual(countCharacters(None), -1)
def testBasic(self):
'''The test function should be working for the basic cases.'''
a = ''
b = 'abc'
self.assertEqual(countCharacters(a), len(a))
self.assertEqual(countCharacters(b), len(b))
def testBasic(self):
'''The test function should be working for the basic cases.'''
a = ''
b = 'abc'
self.assertEqual(countCharacters(a), len(a))
self.assertEqual(countCharacters(b), len(b))
