Fix for metaclasses that use type annotation (Issue #979) (#981)

* Replicate error with test

* Fix - ignore parameters we do not recognize

* Seperate Python3.6+ tests to their own folder

* lint

* Unused import

* Black formatting

Author: ekampf

graphene/types/base.py

@@ -34,7 +34,9 @@ def create_type(cls, class_name, **options):
         return type(class_name, (cls,), {"Meta": options})
 
     @classmethod
-    def __init_subclass_with_meta__(cls, name=None, description=None, _meta=None):
+    def __init_subclass_with_meta__(
+        cls, name=None, description=None, _meta=None, **_kwargs
+    ):
         assert "_meta" not in cls.__dict__, "Can't assign directly meta"
         if not _meta:
             return

tests_py36/test_objecttype.py

@@ -0,0 +1,15 @@
+from graphene import Schema, ObjectType, String
+
+
+def test_objecttype_meta_with_annotations():
+    class Query(ObjectType):
+        class Meta:
+            name: str = "oops"
+
+        hello = String()
+
+        def resolve_hello(self, info):
+            return "Hello"
+
+    schema = Schema(query=Query)
+    assert schema is not None

tox.ini

@@ -10,7 +10,8 @@ setenv =
      PYTHONPATH = .:{envdir}
 commands =
     py{27,py}: py.test --cov=graphene graphene examples {posargs}
-    py{35,36,37}: py.test --cov=graphene graphene examples tests_asyncio {posargs}
+    py{35}: py.test --cov=graphene graphene examples tests_asyncio {posargs}
+    py{36,37}: py.test --cov=graphene graphene examples tests_asyncio tests_py36 {posargs}
 
 [testenv:pre-commit]
 basepython=python3.6