[Tests] Speed up test (huggingface#2919)

speed up test

Author: patrickvonplaten

tests/models/test_models_unet_3d_condition.py

@@ -88,19 +88,17 @@ def output_shape(self):
 
     def prepare_init_args_and_inputs_for_common(self):
         init_dict = {
-            "block_out_channels": (32, 64, 64, 64),
+            "block_out_channels": (32, 64),
             "down_block_types": (
-                "CrossAttnDownBlock3D",
-                "CrossAttnDownBlock3D",
                 "CrossAttnDownBlock3D",
                 "DownBlock3D",
             ),
-            "up_block_types": ("UpBlock3D", "CrossAttnUpBlock3D", "CrossAttnUpBlock3D", "CrossAttnUpBlock3D"),
+            "up_block_types": ("UpBlock3D", "CrossAttnUpBlock3D"),
             "cross_attention_dim": 32,
-            "attention_head_dim": 4,
+            "attention_head_dim": 8,
             "out_channels": 4,
             "in_channels": 4,
-            "layers_per_block": 2,
+            "layers_per_block": 1,
             "sample_size": 32,
         }
         inputs_dict = self.dummy_input