Add raise exception on serializer validation

graphene_django/rest_framework/mutation.py

@@ -124,7 +124,7 @@ class SerializerMutation(ClientIDMutation):
         kwargs = cls.get_serializer_kwargs(root, info, **input)
         serializer = cls._meta.serializer_class(**kwargs)
 
-        if serializer.is_valid():
+        if serializer.is_valid(raise_exception=True):
             return cls.perform_mutate(serializer, info)
         else:
             errors = ErrorType.from_errors(serializer.errors)

graphene_django/rest_framework/tests/test_mutation.py

@@ -5,6 +5,7 @@ from rest_framework import serializers
 
 from graphene import Field, ResolveInfo
 from graphene.types.inputobjecttype import InputObjectType
+from rest_framework.exceptions import ValidationError
 
 from ...settings import graphene_settings
 from ...types import DjangoObjectType
@@ -204,20 +205,23 @@ def test_mutate_and_get_payload_error():
             serializer_class = MySerializer
 
     # missing required fields
-    result = MyMutation.mutate_and_get_payload(None, mock_info(), **{})
-    assert len(result.errors) > 0
+    with raises(ValidationError):
+        result = MyMutation.mutate_and_get_payload(None, mock_info(), **{})
+        assert len(result.errors) > 0
 
 
 def test_model_mutate_and_get_payload_error():
     # missing required fields
-    result = MyModelMutation.mutate_and_get_payload(None, mock_info(), **{})
-    assert len(result.errors) > 0
+    with raises(ValidationError):
+        result = MyModelMutation.mutate_and_get_payload(None, mock_info(), **{})
+        assert len(result.errors) > 0
 
 
 def test_mutation_error_camelcased():
     graphene_settings.CAMELCASE_ERRORS = True
-    result = MyModelMutation.mutate_and_get_payload(None, mock_info(), **{})
-    assert result.errors[0].field == "coolName"
+    with raises(ValidationError):
+        result = MyModelMutation.mutate_and_get_payload(None, mock_info(), **{})
+        assert result.errors[0].field == "coolName"
     graphene_settings.CAMELCASE_ERRORS = False