refactor unet tests (3d_condition, motion, controlnetxs) (#13897)

* refactor unet_3d_condition tests

* refactor unet_motion tests

* refactor unet_controlnetxs tests

Author: akshan-main

tests/models/unets/test_models_unet_3d_condition.py

@@ -13,52 +13,43 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import unittest
-
-import numpy as np
 import torch
 
-from diffusers.models import ModelMixin, UNet3DConditionModel
-from diffusers.utils import logging
-from diffusers.utils.import_utils import is_xformers_available
+from diffusers import UNet3DConditionModel
+from diffusers.utils.torch_utils import randn_tensor
 
-from ...testing_utils import enable_full_determinism, floats_tensor, skip_mps, torch_device
-from ..test_modeling_common import ModelTesterMixin, UNetTesterMixin
+from ...testing_utils import enable_full_determinism, torch_device
+from ..testing_utils import (
+    AttentionTesterMixin,
+    BaseModelTesterConfig,
+    MemoryTesterMixin,
+    ModelTesterMixin,
+    TrainingTesterMixin,
+)
 
 
 enable_full_determinism()
 
-logger = logging.get_logger(__name__)
-
-
-@skip_mps
-class UNet3DConditionModelTests(ModelTesterMixin, UNetTesterMixin, unittest.TestCase):
-    model_class = UNet3DConditionModel
-    main_input_name = "sample"
 
+class UNet3DConditionModelTesterConfig(BaseModelTesterConfig):
     @property
-    def dummy_input(self):
-        batch_size = 4
-        num_channels = 4
-        num_frames = 4
-        sizes = (16, 16)
+    def model_class(self):
+        return UNet3DConditionModel
 
-        noise = floats_tensor((batch_size, num_channels, num_frames) + sizes).to(torch_device)
-        time_step = torch.tensor([10]).to(torch_device)
-        encoder_hidden_states = floats_tensor((batch_size, 4, 8)).to(torch_device)
-
-        return {"sample": noise, "timestep": time_step, "encoder_hidden_states": encoder_hidden_states}
+    @property
+    def main_input_name(self) -> str:
+        return "sample"
 
     @property
-    def input_shape(self):
+    def output_shape(self) -> tuple:
         return (4, 4, 16, 16)
 
     @property
-    def output_shape(self):
-        return (4, 4, 16, 16)
+    def generator(self):
+        return torch.Generator("cpu").manual_seed(0)
 
-    def prepare_init_args_and_inputs_for_common(self):
-        init_dict = {
+    def get_init_dict(self) -> dict:
+        return {
             "block_out_channels": (4, 8),
             "norm_num_groups": 4,
             "down_block_types": (
@@ -73,111 +64,57 @@ def prepare_init_args_and_inputs_for_common(self):
             "layers_per_block": 1,
             "sample_size": 16,
         }
-        inputs_dict = self.dummy_input
-        return init_dict, inputs_dict
-
-    @unittest.skipIf(
-        torch_device != "cuda" or not is_xformers_available(),
-        reason="XFormers attention is only available with CUDA and `xformers` installed",
-    )
-    def test_xformers_enable_works(self):
-        init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
-        model = self.model_class(**init_dict)
 
-        model.enable_xformers_memory_efficient_attention()
+    def get_dummy_inputs(self) -> dict:
+        batch_size = 4
+        num_channels = 4
+        num_frames = 4
+        sizes = (16, 16)
+        noise = randn_tensor(
+            (batch_size, num_channels, num_frames, *sizes), generator=self.generator, device=torch_device
+        )
+        timestep = torch.tensor([10], device=torch_device)
+        encoder_hidden_states = randn_tensor((batch_size, 4, 8), generator=self.generator, device=torch_device)
+        return {"sample": noise, "timestep": timestep, "encoder_hidden_states": encoder_hidden_states}
 
-        assert (
-            model.mid_block.attentions[0].transformer_blocks[0].attn1.processor.__class__.__name__
-            == "XFormersAttnProcessor"
-        ), "xformers is not enabled"
 
-    # Overriding to set `norm_num_groups` needs to be different for this model.
+class TestUNet3DConditionModel(UNet3DConditionModelTesterConfig, ModelTesterMixin):
+    # Overridden because UNet3DConditionModel needs a different `norm_num_groups`.
     def test_forward_with_norm_groups(self):
-        init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
+        init_dict = self.get_init_dict()
         init_dict["block_out_channels"] = (32, 64)
         init_dict["norm_num_groups"] = 32
-
-        model = self.model_class(**init_dict)
-        model.to(torch_device)
-        model.eval()
+        model = self.model_class(**init_dict).to(torch_device).eval()
 
         with torch.no_grad():
-            output = model(**inputs_dict)
+            output = model(**self.get_dummy_inputs()).sample
 
-            if isinstance(output, dict):
-                output = output.sample
+        assert output.shape == self.get_dummy_inputs()["sample"].shape, "Input and output shapes do not match"
 
-        self.assertIsNotNone(output)
-        expected_shape = inputs_dict["sample"].shape
-        self.assertEqual(output.shape, expected_shape, "Input and output shapes do not match")
-
-    # Overriding since the UNet3D outputs a different structure.
-    def test_determinism(self):
-        init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
-        model = self.model_class(**init_dict)
-        model.to(torch_device)
-        model.eval()
+    def test_feed_forward_chunking(self):
+        init_dict = self.get_init_dict()
+        init_dict["block_out_channels"] = (32, 64)
+        init_dict["norm_num_groups"] = 32
+        model = self.model_class(**init_dict).to(torch_device).eval()
 
         with torch.no_grad():
-            # Warmup pass when using mps (see #372)
-            if torch_device == "mps" and isinstance(model, ModelMixin):
-                model(**self.dummy_input)
-
-            first = model(**inputs_dict)
-            if isinstance(first, dict):
-                first = first.sample
-
-            second = model(**inputs_dict)
-            if isinstance(second, dict):
-                second = second.sample
-
-        out_1 = first.cpu().numpy()
-        out_2 = second.cpu().numpy()
-        out_1 = out_1[~np.isnan(out_1)]
-        out_2 = out_2[~np.isnan(out_2)]
-        max_diff = np.amax(np.abs(out_1 - out_2))
-        self.assertLessEqual(max_diff, 1e-5)
+            output = model(**self.get_dummy_inputs())[0]
 
-    def test_model_attention_slicing(self):
-        init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
-
-        init_dict["block_out_channels"] = (16, 32)
-        init_dict["attention_head_dim"] = 8
-
-        model = self.model_class(**init_dict)
-        model.to(torch_device)
-        model.eval()
-
-        model.set_attention_slice("auto")
+        model.enable_forward_chunking()
         with torch.no_grad():
-            output = model(**inputs_dict)
-        assert output is not None
+            output_2 = model(**self.get_dummy_inputs())[0]
 
-        model.set_attention_slice("max")
-        with torch.no_grad():
-            output = model(**inputs_dict)
-        assert output is not None
+        assert output.shape == output_2.shape, "Shape doesn't match"
+        assert (output - output_2).abs().max() < 1e-2
 
-        model.set_attention_slice(2)
-        with torch.no_grad():
-            output = model(**inputs_dict)
-        assert output is not None
 
-    def test_feed_forward_chunking(self):
-        init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
-        init_dict["block_out_channels"] = (32, 64)
-        init_dict["norm_num_groups"] = 32
+class TestUNet3DConditionModelTraining(UNet3DConditionModelTesterConfig, TrainingTesterMixin):
+    """Training tests for UNet3DConditionModel."""
 
-        model = self.model_class(**init_dict)
-        model.to(torch_device)
-        model.eval()
 
-        with torch.no_grad():
-            output = model(**inputs_dict)[0]
+class TestUNet3DConditionModelMemory(UNet3DConditionModelTesterConfig, MemoryTesterMixin):
+    """Memory optimization tests for UNet3DConditionModel."""
 
-        model.enable_forward_chunking()
-        with torch.no_grad():
-            output_2 = model(**inputs_dict)[0]
 
-        self.assertEqual(output.shape, output_2.shape, "Shape doesn't match")
-        assert np.abs(output.cpu() - output_2.cpu()).max() < 1e-2
+class TestUNet3DConditionModelAttention(UNet3DConditionModelTesterConfig, AttentionTesterMixin):
+    """Attention processor tests for UNet3DConditionModel."""