Fix input tyhpe generate: add "pass" for an empty input type class def

Author: tubaman

ariadne_codegen/client_generators/input_types.py

@@ -19,6 +19,7 @@
     generate_method_call,
     generate_module,
     generate_name,
+    generate_pass,
     generate_pydantic_field,
     model_has_forward_refs,
 )
@@ -199,6 +200,9 @@ def _parse_input_definition(
                 class_def.body.append(docstring)
             self._save_dependencies(root_type=definition.name, field_type=field_type)
 
+        if not class_def.body:
+            class_def.body.append(generate_pass())
+
         if self.plugin_manager:
             class_def = self.plugin_manager.generate_input_class(
                 class_def, input_type=definition

tests/client_generators/input_types_generator/test_parsing_inputs.py

@@ -26,6 +26,8 @@
             input CustomInput2 {
                 field: Int!
             }
+
+            input CustomInput3
             """,
             [
                 ast.ClassDef(
@@ -81,6 +83,16 @@
                     ],
                     type_params=[],
                 ),
+                ast.ClassDef(
+                    name="CustomInput3",
+                    bases=[ast.Name(id=BASE_MODEL_CLASS_NAME)],
+                    keywords=[],
+                    decorator_list=[],
+                    body=[
+                        ast.Pass()
+                    ],
+                    type_params=[],
+                ),
             ],
         )
     ],