Add version to create.

2 files changed, 22 insertions, 2 deletions

diff --git a/jsonschema/tests/test_validators.py b/jsonschema/tests/test_validators.py
index 219404a..1db6c64 100644
--- a/jsonschema/tests/test_validators.py
+++ b/jsonschema/tests/test_validators.py
@@ -10,7 +10,7 @@ from jsonschema.tests.compat import mock, unittest
 from jsonschema.validators import (
     RefResolutionError, UnknownType, ValidationError, ErrorTree,
     Draft3Validator, Draft4Validator, RefResolver, ValidatorMixin,
-    create, validate,
+    meta_schemas, create, validate,
 )
 
 
@@ -52,6 +52,18 @@ class TestCreate(unittest.TestCase):
             self.validator_value, instance, self.schema,
         )
 
+    def test_if_a_version_is_provided_it_is_registered(self):
+        with mock.patch("jsonschema.validators.validates") as validates:
+            validates.side_effect = lambda version : lambda cls : cls
+            Validator = create(meta_schema={"id" : "id"}, version="my version")
+        validates.assert_called_once_with("my version")
+        self.assertEqual(Validator.__name__, "MyVersionValidator")
+
+    def test_if_a_version_is_not_provided_it_is_not_registered(self):
+        with mock.patch("jsonschema.validators.validates") as validates:
+            Validator = create(meta_schema={"id" : "id"})
+        self.assertFalse(validates.called)
+
 
 class TestIterErrors(unittest.TestCase):
     def setUp(self):
diff --git a/jsonschema/validators.py b/jsonschema/validators.py
index e513aa3..582f53b 100644
--- a/jsonschema/validators.py
+++ b/jsonschema/validators.py
@@ -136,7 +136,7 @@ def validates(version):
     return _validates
 
 
-def create(meta_schema, validators=(), default_types=None):  # noqa
+def create(meta_schema, validators=(), version=None, default_types=None):  # noqa
     if default_types is None:
         default_types = {
             "array" : list, "boolean" : bool, "integer" : int_types,
@@ -227,6 +227,14 @@ def create(meta_schema, validators=(), default_types=None):  # noqa
             error = next(self.iter_errors(instance, _schema), None)
             return error is None
 
+    if version is not None:
+        Validator = validates(version)(Validator)
+
+        name = "{0}Validator".format(version.title().replace(" ", ""))
+        if not PY3 and isinstance(name, unicode):
+            name = name.encode("utf-8")
+        Validator.__name__ = name
+
     return Validator