Add an explicit test for #611.

Author: Julian

jsonschema/tests/test_validators.py

@@ -1182,6 +1182,12 @@ def test_is_type_evades_bool_inheriting_from_int(self):
     def test_string_a_bytestring_is_a_string(self):
         self.Validator({"type": "string"}).validate(b"foo")
 
+    def test_patterns_can_be_native_strings(self):
+        """
+        See https://github.com/Julian/jsonschema/issues/611.
+        """
+        self.Validator({"pattern": "foo"}).validate("foo")
+
     def test_it_can_validate_with_decimals(self):
         schema = {"items": {"type": "number"}}
         Validator = validators.extend(