From c7c611266b155c1ee46261744be98d8c084b20f0 Mon Sep 17 00:00:00 2001
From: Syrus Akbary <me@syrusakbary.com>
Date: Wed, 26 Jul 2017 19:26:54 -0700
Subject: [PATCH] Allow types to be abstract

---
 graphene/types/interface.py          |  4 +---
 graphene/types/mutation.py           |  4 +---
 graphene/types/objecttype.py         |  4 +---
 graphene/utils/subclass_with_meta.py | 14 +++++++++++---
 4 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/graphene/types/interface.py b/graphene/types/interface.py
index 389cb82c..054b7229 100644
--- a/graphene/types/interface.py
+++ b/graphene/types/interface.py
@@ -19,9 +19,7 @@ class Interface(BaseType):
     when the field is resolved.
     '''
     @classmethod
-    def __init_subclass_with_meta__(cls, abstract=False, _meta=None, **options):
-        if abstract:
-            return
+    def __init_subclass_with_meta__(cls, _meta=None, **options):
         if not _meta:
             _meta = InterfaceOptions(cls)
 
diff --git a/graphene/types/mutation.py b/graphene/types/mutation.py
index 431c1d87..32194e9e 100644
--- a/graphene/types/mutation.py
+++ b/graphene/types/mutation.py
@@ -20,9 +20,7 @@ class Mutation(ObjectType):
     '''
     @classmethod
     def __init_subclass_with_meta__(cls, resolver=None, output=None, arguments=None,
-                                    _meta=None, abstract=False, **options):
-        if abstract:
-            return
+                                    _meta=None, **options):
         if not _meta:
             _meta = MutationOptions(cls)
 
diff --git a/graphene/types/objecttype.py b/graphene/types/objecttype.py
index 9987e4e4..c579a88e 100644
--- a/graphene/types/objecttype.py
+++ b/graphene/types/objecttype.py
@@ -22,9 +22,7 @@ class ObjectType(BaseType):
     def __init_subclass_with_meta__(
             cls, interfaces=(),
             possible_types=(),
-            default_resolver=None, _meta=None, abstract=False, **options):
-        if abstract:
-            return
+            default_resolver=None, _meta=None, **options):
         if not _meta:
             _meta = ObjectTypeOptions(cls)
 
diff --git a/graphene/utils/subclass_with_meta.py b/graphene/utils/subclass_with_meta.py
index f1ebfce9..9226e418 100644
--- a/graphene/utils/subclass_with_meta.py
+++ b/graphene/utils/subclass_with_meta.py
@@ -27,9 +27,17 @@ class SubclassWithMeta(six.with_metaclass(SubclassWithMeta_Meta)):
                 raise Exception("Meta have to be either a class or a dict. Received {}".format(_Meta))
             delattr(cls, "Meta")
         options = dict(meta_options, **_meta_props)
-        super_class = super(cls, cls)
-        if hasattr(super_class, '__init_subclass_with_meta__'):
-            super_class.__init_subclass_with_meta__(**options)
+
+        abstract = options.pop('abstract', False)
+        if abstract:
+            assert not options, (
+                "Abstract types can only contain the abstract attribute. "
+                "Received: abstract, {option_keys}"
+            ).format(option_keys=', '.join(options.keys()))
+        else:
+            super_class = super(cls, cls)
+            if hasattr(super_class, '__init_subclass_with_meta__'):
+                super_class.__init_subclass_with_meta__(**options)
 
     @classmethod
     def __init_subclass_with_meta__(cls, **meta_options):