Fix misplaced configs saving (#1159)

* correct place for diffusers config search

* add test

Author: eaidova

optimum/intel/openvino/modeling_diffusion.py

@@ -294,8 +294,12 @@ def _save_pretrained(self, save_directory: Union[str, Path]):
                 dst_path = save_path / OV_XML_FILE_NAME
                 dst_path.parent.mkdir(parents=True, exist_ok=True)
                 openvino.save_model(model.model, dst_path, compress_to_fp16=False)
-                model_dir = model.config.get("_name_or_path", None) or model.model_save_dir
-                config_path = Path(model_dir) / CONFIG_NAME
+                model_dir = (
+                    self.model_save_dir
+                    if not isinstance(self.model_save_dir, TemporaryDirectory)
+                    else self.model_save_dir.name
+                )
+                config_path = Path(model_dir) / save_path.name / CONFIG_NAME
                 if config_path.is_file():
                     config_save_path = save_path / CONFIG_NAME
                     shutil.copyfile(config_path, config_save_path)

tests/openvino/test_diffusion.py

@@ -359,6 +359,13 @@ def test_load_and_save_pipeline_with_safety_checker(self):
                     self.assertTrue(model_lib in ["diffusers", "transformers"])
                     self.assertFalse(model_class.startswith("OV"))
             loaded_pipeline = self.OVMODEL_CLASS.from_pretrained(tmpdirname)
+            for component in ["text_encoder", "unet", "vae_encoder", "vae_decoder"]:
+                config = getattr(getattr(ov_pipeline, component), "config", None)
+                if config is not None:
+                    loaded_config = getattr(getattr(loaded_pipeline, component), "config")
+                    self.assertDictEqual(
+                        config, loaded_config, f"Expected config:\n{config}\nLoaded config:|n{loaded_config}"
+                    )
             self.assertTrue(loaded_pipeline.safety_checker is not None)
             self.assertIsInstance(loaded_pipeline.safety_checker, StableDiffusionSafetyChecker)
             del loaded_pipeline