mps: skip unstable test (#3037)

Author: pcuenca

tests/pipelines/stable_unclip/test_stable_unclip_img2img.py

@@ -17,7 +17,15 @@
 from diffusers.pipelines.pipeline_utils import DiffusionPipeline
 from diffusers.pipelines.stable_diffusion.stable_unclip_image_normalizer import StableUnCLIPImageNormalizer
 from diffusers.utils.import_utils import is_xformers_available
-from diffusers.utils.testing_utils import floats_tensor, load_image, load_numpy, require_torch_gpu, slow, torch_device
+from diffusers.utils.testing_utils import (
+    floats_tensor,
+    load_image,
+    load_numpy,
+    require_torch_gpu,
+    skip_mps,
+    slow,
+    torch_device,
+)
 
 from ...pipeline_params import TEXT_GUIDED_IMAGE_VARIATION_BATCH_PARAMS, TEXT_GUIDED_IMAGE_VARIATION_PARAMS
 from ...test_pipelines_common import (
@@ -147,6 +155,7 @@ def get_dummy_inputs(self, device, seed=0, pil_image=True):
             "output_type": "np",
         }
 
+    @skip_mps
     def test_image_embeds_none(self):
         device = "cpu"  # ensure determinism for the device-dependent torch.Generator
         components = self.get_dummy_components()