feat: add GraphQL schema for testing

tests/schema.py

@@ -0,0 +1,44 @@
+"""GraphQL schema."""
+import graphene
+from graphene_django_filter import AdvancedDjangoFilterConnectionField
+
+from .object_types import (
+    TaskFilterFieldsType,
+    TaskFilterSetClassType,
+    TaskGroupFilterFieldsType,
+    TaskGroupFilterSetClassType,
+    UserFilterFieldsType,
+    UserFilterSetClassType,
+)
+
+
+class Query(graphene.ObjectType):
+    """Schema queries."""
+
+    user_fields = AdvancedDjangoFilterConnectionField(
+        UserFilterFieldsType,
+        description='Advanced filter fields with the `UserFilterFieldsType` type',
+    )
+    user_filter_set = AdvancedDjangoFilterConnectionField(
+        UserFilterSetClassType,
+        description='Advanced filter fields with the `UserFilterSetClassType` type',
+    )
+    task_fields = AdvancedDjangoFilterConnectionField(
+        TaskFilterFieldsType,
+        description='Advanced filter field with the `TaskFilterFieldsType` type',
+    )
+    task_filter_set = AdvancedDjangoFilterConnectionField(
+        TaskFilterSetClassType,
+        description='Advanced filter field with the `TaskFilterSetClassType` type',
+    )
+    task_group_fields = AdvancedDjangoFilterConnectionField(
+        TaskGroupFilterFieldsType,
+        description='Advanced filter field with the `TaskGroupFilterFieldsType` type',
+    )
+    task_group_filter_set = AdvancedDjangoFilterConnectionField(
+        TaskGroupFilterSetClassType,
+        description='Advanced filter field with the `TaskGroupFilterSetClassType` type',
+    )
+
+
+schema = graphene.Schema(query=Query)