Reorganize pipeline tests

src/diffusers/utils/testing_utils.py

@@ -14,7 +14,7 @@
 import requests
 from packaging import version
 
-from .import_utils import is_flax_available, is_torch_available
+from .import_utils import is_flax_available, is_onnx_available, is_torch_available
 
 
 global_rng = random.Random()
@@ -100,13 +100,34 @@ def slow(test_case):
     return unittest.skipUnless(_run_slow_tests, "test is slow")(test_case)
 
 
+def require_torch(test_case):
+    """
+    Decorator marking a test that requires PyTorch. These tests are skipped when PyTorch isn't installed.
+    """
+    return unittest.skipUnless(is_torch_available(), "test requires PyTorch")(test_case)
+
+
+def require_torch_gpu(test_case):
+    """Decorator marking a test that requires CUDA and PyTorch."""
+    return unittest.skipUnless(is_torch_available() and torch_device == "cuda", "test requires PyTorch+CUDA")(
+        test_case
+    )
+
+
 def require_flax(test_case):
     """
     Decorator marking a test that requires JAX & Flax. These tests are skipped when one / both are not installed
     """
     return unittest.skipUnless(is_flax_available(), "test requires JAX & Flax")(test_case)
 
 
+def require_onnxruntime(test_case):
+    """
+    Decorator marking a test that requires onnxruntime. These tests are skipped when onnxruntime isn't installed.
+    """
+    return unittest.skipUnless(is_onnx_available(), "test requires onnxruntime")(test_case)
+
+
 def load_image(image: Union[str, PIL.Image.Image]) -> PIL.Image.Image:
     """
     Args:

tests/pipelines/ddim/test_ddim.py

@@ -0,0 +1,114 @@
+# coding=utf-8
+# Copyright 2022 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+import numpy as np
+import torch
+
+from diffusers import DDIMPipeline, DDIMScheduler, UNet2DModel
+from diffusers.utils.testing_utils import require_torch, slow, torch_device
+
+from ...test_pipelines_common import PipelineTesterMixin
+
+
+torch.backends.cuda.matmul.allow_tf32 = False
+
+
+class DDIMPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
+    @property
+    def dummy_uncond_unet(self):
+        torch.manual_seed(0)
+        model = UNet2DModel(
+            block_out_channels=(32, 64),
+            layers_per_block=2,
+            sample_size=32,
+            in_channels=3,
+            out_channels=3,
+            down_block_types=("DownBlock2D", "AttnDownBlock2D"),
+            up_block_types=("AttnUpBlock2D", "UpBlock2D"),
+        )
+        return model
+
+    def test_inference(self):
+        unet = self.dummy_uncond_unet
+        scheduler = DDIMScheduler()
+
+        ddpm = DDIMPipeline(unet=unet, scheduler=scheduler)
+        ddpm.to(torch_device)
+        ddpm.set_progress_bar_config(disable=None)
+
+        # Warmup pass when using mps (see #372)
+        if torch_device == "mps":
+            _ = ddpm(num_inference_steps=1)
+
+        generator = torch.manual_seed(0)
+        image = ddpm(generator=generator, num_inference_steps=2, output_type="numpy").images
+
+        generator = torch.manual_seed(0)
+        image_from_tuple = ddpm(generator=generator, num_inference_steps=2, output_type="numpy", return_dict=False)[0]
+
+        image_slice = image[0, -3:, -3:, -1]
+        image_from_tuple_slice = image_from_tuple[0, -3:, -3:, -1]
+
+        assert image.shape == (1, 32, 32, 3)
+        expected_slice = np.array(
+            [1.000e00, 5.717e-01, 4.717e-01, 1.000e00, 0.000e00, 1.000e00, 3.000e-04, 0.000e00, 9.000e-04]
+        )
+        tolerance = 1e-2 if torch_device != "mps" else 3e-2
+        assert np.abs(image_slice.flatten() - expected_slice).max() < tolerance
+        assert np.abs(image_from_tuple_slice.flatten() - expected_slice).max() < tolerance
+
+
+@slow
+@require_torch
+class DDIMPipelineIntegrationTests(unittest.TestCase):
+    def test_inference_ema_bedroom(self):
+        model_id = "google/ddpm-ema-bedroom-256"
+
+        unet = UNet2DModel.from_pretrained(model_id)
+        scheduler = DDIMScheduler.from_config(model_id)
+
+        ddpm = DDIMPipeline(unet=unet, scheduler=scheduler)
+        ddpm.to(torch_device)
+        ddpm.set_progress_bar_config(disable=None)
+
+        generator = torch.manual_seed(0)
+        image = ddpm(generator=generator, output_type="numpy").images
+
+        image_slice = image[0, -3:, -3:, -1]
+
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.00605, 0.0201, 0.0344, 0.00235, 0.00185, 0.00025, 0.00215, 0.0, 0.00685])
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
+
+    def test_inference_cifar10(self):
+        model_id = "google/ddpm-cifar10-32"
+
+        unet = UNet2DModel.from_pretrained(model_id)
+        scheduler = DDIMScheduler()
+
+        ddim = DDIMPipeline(unet=unet, scheduler=scheduler)
+        ddim.to(torch_device)
+        ddim.set_progress_bar_config(disable=None)
+
+        generator = torch.manual_seed(0)
+        image = ddim(generator=generator, eta=0.0, output_type="numpy").images
+
+        image_slice = image[0, -3:, -3:, -1]
+
+        assert image.shape == (1, 32, 32, 3)
+        expected_slice = np.array([0.17235, 0.16175, 0.16005, 0.16255, 0.1497, 0.1513, 0.15045, 0.1442, 0.1453])
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2

tests/pipelines/ddpm/test_ddpm.py

@@ -0,0 +1,55 @@
+# coding=utf-8
+# Copyright 2022 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+import numpy as np
+import torch
+
+from diffusers import DDPMPipeline, DDPMScheduler, UNet2DModel
+from diffusers.utils.testing_utils import require_torch, slow, torch_device
+
+from ...test_pipelines_common import PipelineTesterMixin
+
+
+torch.backends.cuda.matmul.allow_tf32 = False
+
+
+class DDPMPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
+    # FIXME: add fast tests
+    pass
+
+
+@slow
+@require_torch
+class DDPMPipelineIntegrationTests(unittest.TestCase):
+    def test_inference_cifar10(self):
+        model_id = "google/ddpm-cifar10-32"
+
+        unet = UNet2DModel.from_pretrained(model_id)
+        scheduler = DDPMScheduler.from_config(model_id)
+
+        ddpm = DDPMPipeline(unet=unet, scheduler=scheduler)
+        ddpm.to(torch_device)
+        ddpm.set_progress_bar_config(disable=None)
+
+        generator = torch.manual_seed(0)
+        image = ddpm(generator=generator, output_type="numpy").images
+
+        image_slice = image[0, -3:, -3:, -1]
+
+        assert image.shape == (1, 32, 32, 3)
+        expected_slice = np.array([0.41995, 0.35885, 0.19385, 0.38475, 0.3382, 0.2647, 0.41545, 0.3582, 0.33845])
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2

tests/pipelines/karras_ve/test_karras_ve.py

@@ -0,0 +1,86 @@
+# coding=utf-8
+# Copyright 2022 HuggingFace Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+import numpy as np
+import torch
+
+from diffusers import KarrasVePipeline, KarrasVeScheduler, UNet2DModel
+from diffusers.utils.testing_utils import require_torch, slow, torch_device
+
+from ...test_pipelines_common import PipelineTesterMixin
+
+
+torch.backends.cuda.matmul.allow_tf32 = False
+
+
+class KarrasVePipelineFastTests(PipelineTesterMixin, unittest.TestCase):
+    @property
+    def dummy_uncond_unet(self):
+        torch.manual_seed(0)
+        model = UNet2DModel(
+            block_out_channels=(32, 64),
+            layers_per_block=2,
+            sample_size=32,
+            in_channels=3,
+            out_channels=3,
+            down_block_types=("DownBlock2D", "AttnDownBlock2D"),
+            up_block_types=("AttnUpBlock2D", "UpBlock2D"),
+        )
+        return model
+
+    def test_inference(self):
+        unet = self.dummy_uncond_unet
+        scheduler = KarrasVeScheduler()
+
+        pipe = KarrasVePipeline(unet=unet, scheduler=scheduler)
+        pipe.to(torch_device)
+        pipe.set_progress_bar_config(disable=None)
+
+        generator = torch.manual_seed(0)
+        image = pipe(num_inference_steps=2, generator=generator, output_type="numpy").images
+
+        generator = torch.manual_seed(0)
+        image_from_tuple = pipe(num_inference_steps=2, generator=generator, output_type="numpy", return_dict=False)[0]
+
+        image_slice = image[0, -3:, -3:, -1]
+        image_from_tuple_slice = image_from_tuple[0, -3:, -3:, -1]
+
+        assert image.shape == (1, 32, 32, 3)
+        expected_slice = np.array([0.0, 1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0])
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
+        assert np.abs(image_from_tuple_slice.flatten() - expected_slice).max() < 1e-2
+
+
+@slow
+@require_torch
+class KarrasVePipelineIntegrationTests(unittest.TestCase):
+    def test_inference(self):
+        model_id = "google/ncsnpp-celebahq-256"
+        model = UNet2DModel.from_pretrained(model_id)
+        scheduler = KarrasVeScheduler()
+
+        pipe = KarrasVePipeline(unet=model, scheduler=scheduler)
+        pipe.to(torch_device)
+        pipe.set_progress_bar_config(disable=None)
+
+        generator = torch.manual_seed(0)
+        image = pipe(num_inference_steps=20, generator=generator, output_type="numpy").images
+
+        image_slice = image[0, -3:, -3:, -1]
+        assert image.shape == (1, 256, 256, 3)
+        expected_slice = np.array([0.578, 0.5811, 0.5924, 0.5809, 0.587, 0.5886, 0.5861, 0.5802, 0.586])
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2