def test_validate_course_id_with_non_existent_course(self):
""" Verify a validator checking non-existent courses."""
course_key = 'non/existing/keyone'
error_msg = u"Course {} does not exist.".format(course_key)
with self.assertRaisesRegexp(serializers.ValidationError, error_msg):
validate_course_id(course_key)
def test_validate_course_id_with_invalid_key(self):
""" Verify a validator checking invalid course keys."""
course_key = 'invalidkey'
error_msg = u"{} is not a valid course key.".format(course_key)
with self.assertRaisesRegexp(serializers.ValidationError, error_msg):
validate_course_id(course_key)