parameterize pass single args through tuple (#3477)

tests/models/test_models_vae.py

@@ -321,7 +321,7 @@ class AutoencoderKLIntegrationTests(unittest.TestCase):
 
         assert torch_all_close(output_slice, expected_output_slice, atol=5e-3)
 
-    @parameterized.expand([13, 16, 27])
+    @parameterized.expand([(13,), (16,), (27,)])
     @require_torch_gpu
     @unittest.skipIf(not is_xformers_available(), reason="xformers is not required when using PyTorch 2.0.")
     def test_stable_diffusion_decode_xformers_vs_2_0_fp16(self, seed):
@@ -339,7 +339,7 @@ class AutoencoderKLIntegrationTests(unittest.TestCase):
 
         assert torch_all_close(sample, sample_2, atol=1e-1)
 
-    @parameterized.expand([13, 16, 37])
+    @parameterized.expand([(13,), (16,), (37,)])
     @require_torch_gpu
     @unittest.skipIf(not is_xformers_available(), reason="xformers is not required when using PyTorch 2.0.")
     def test_stable_diffusion_decode_xformers_vs_2_0(self, seed):