in tweeter/tests.py [0:0]
def test_serializer_validation(self):
ts = TweetSerializer()
self.assertRaises(serializers.ValidationError,ts.validate_text,"hi!")
self.assertRaises(serializers.ValidationError,ts.validate_text," ")
self.assertRaises(serializers.ValidationError,ts.validate_text," " * 71)
self.assertEqual(ts.validate_text(" " * 70)," "* 70)