Fix broken UT due to pytest import error (#1368)

Author: yuekui

graphene_django/forms/tests/test_converter.py

@@ -1,5 +1,5 @@
 from django import forms
-from py.test import raises
+from pytest import raises
 
 import graphene
 from graphene import (

graphene_django/forms/tests/test_mutation.py

@@ -1,7 +1,7 @@
 import pytest
 from django import forms
 from django.core.exceptions import ValidationError
-from py.test import raises
+from pytest import raises
 
 from graphene import Field, ObjectType, Schema, String
 from graphene_django import DjangoObjectType

graphene_django/rest_framework/tests/test_field_converter.py

@@ -3,7 +3,7 @@
 import graphene
 from django.db import models
 from graphene import InputObjectType
-from py.test import raises
+from pytest import raises
 from rest_framework import serializers
 
 from ..serializer_converter import convert_serializer_field

graphene_django/rest_framework/tests/test_mutation.py

@@ -1,6 +1,6 @@
 import datetime
 
-from py.test import raises
+from pytest import raises
 from rest_framework import serializers
 
 from graphene import Field, ResolveInfo

graphene_django/tests/issues/test_520.py

@@ -8,8 +8,8 @@
 
 from graphene import Field, ResolveInfo
 from graphene.types.inputobjecttype import InputObjectType
-from py.test import raises
-from py.test import mark
+from pytest import raises
+from pytest import mark
 from rest_framework import serializers
 
 from ...types import DjangoObjectType

graphene_django/tests/test_converter.py

@@ -3,7 +3,7 @@
 import pytest
 from django.db import models
 from django.utils.translation import gettext_lazy as _
-from py.test import raises
+from pytest import raises
 
 import graphene
 from graphene import NonNull

graphene_django/tests/test_forms.py

@@ -1,5 +1,5 @@
 from django.core.exceptions import ValidationError
-from py.test import raises
+from pytest import raises
 
 from ..forms import GlobalIDFormField, GlobalIDMultipleChoiceField
 

graphene_django/tests/test_query.py

@@ -6,7 +6,7 @@
 from django.db.models import Q
 from django.utils.functional import SimpleLazyObject
 from graphql_relay import to_global_id
-from py.test import raises
+from pytest import raises
 
 import graphene
 from graphene.relay import Node

graphene_django/tests/test_schema.py

@@ -1,4 +1,4 @@
-from py.test import raises
+from pytest import raises
 
 from ..registry import Registry
 from ..types import DjangoObjectType