diff --git a/.pylintrc b/.pylintrc
new file mode 100644
index 0000000..64f880a
--- /dev/null
+++ b/.pylintrc
@@ -0,0 +1,2 @@
+[MESSAGES CONTROL]
+disable=C0114, C0115, C0116, W0613
diff --git a/example/schema.py b/example/schema.py
index 3161ea9..0d28cb4 100644
--- a/example/schema.py
+++ b/example/schema.py
@@ -16,16 +16,20 @@ def resolve_hello(obj, info: GraphQLResolveInfo) -> str:
         return "Hello world!"
 
     @GraphQLObject.field(args={"filter_": GraphQLObject.argument("filter")})
-    async def groups(obj, info: GraphQLResolveInfo, filter_: GroupFilter) -> list[GroupType]:
+    @staticmethod
+    async def groups(
+        obj, info: GraphQLResolveInfo, filter_: GroupFilter = GroupFilter.ALL
+    ) -> list[GroupType]:
         if filter_ == GroupFilter.ADMIN:
             return await db.get_all("groups", is_admin=True)
 
         if filter_ == GroupFilter.MEMBER:
             return await db.get_all("groups", is_admin=False)
-        
+
         return await db.get_all("groups")
 
     @GraphQLObject.field()
+    @staticmethod
     async def group(obj, info: GraphQLResolveInfo, id: str) -> GroupType | None:
         try:
             id_int = int(id)
@@ -35,6 +39,7 @@ async def group(obj, info: GraphQLResolveInfo, id: str) -> GroupType | None:
         return await db.get_row("groups", id=id_int)
 
     @GraphQLObject.field()
+    @staticmethod
     async def users(obj, info: GraphQLResolveInfo) -> list[UserType]:
         return await db.get_all("users")
 
diff --git a/tests/test_query.py b/tests/test_query.py
index 7632ad6..ad5befa 100644
--- a/tests/test_query.py
+++ b/tests/test_query.py
@@ -5,3 +5,63 @@
 async def test_query_hello_field(exec_query):
     result = await exec_query("{ hello }")
     assert result.data == {"hello": "Hello world!"}
+
+
+@pytest.mark.asyncio
+async def test_query_groups_field(exec_query):
+    result = await exec_query("{ groups(filter: ALL) { id name } }")
+    assert result.data == {
+        "groups": [
+            {
+                "id": "1",
+                "name": "Admins",
+            },
+            {
+                "id": "2",
+                "name": "Members",
+            },
+        ],
+    }
+
+
+@pytest.mark.asyncio
+async def test_query_groups_field_all_arg(exec_query):
+    result = await exec_query("{ groups(filter: ALL) { id name } }")
+    assert result.data == {
+        "groups": [
+            {
+                "id": "1",
+                "name": "Admins",
+            },
+            {
+                "id": "2",
+                "name": "Members",
+            },
+        ],
+    }
+
+
+@pytest.mark.asyncio
+async def test_query_groups_field_admin_arg(exec_query):
+    result = await exec_query("{ groups(filter: ADMIN) { id name } }")
+    assert result.data == {
+        "groups": [
+            {
+                "id": "1",
+                "name": "Admins",
+            },
+        ],
+    }
+
+
+@pytest.mark.asyncio
+async def test_query_groups_field_member_arg(exec_query):
+    result = await exec_query("{ groups(filter: MEMBER) { id name } }")
+    assert result.data == {
+        "groups": [
+            {
+                "id": "2",
+                "name": "Members",
+            },
+        ],
+    }