[Tests] add test for checking soft dependencies.

.github/workflows/pr_dependency_test.yml

@@ -0,0 +1,32 @@
+name: Run dependency tests
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  check_dependencies:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.7"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e .
+          pip install pytest
+      - name: Check for soft dependencies
+        run: |
+          pytest tests/others/test_dependencies.py
+

.github/workflows/pr_tests.yml

@@ -81,7 +81,7 @@ jobs:
       if: ${{ matrix.config.framework == 'pytorch_models' }}
       run: |
         python -m pytest -n 2 --max-worker-restart=0 --dist=loadfile \
-          -s -v -k "not Flax and not Onnx" \
+          -s -v -k "not Flax and not Onnx and not Dependency" \
           --make-reports=tests_${{ matrix.config.report }} \
           tests/models tests/schedulers tests/others
 

setup.py

@@ -94,6 +94,8 @@
     "jaxlib>=0.1.65",
     "Jinja2",
     "k-diffusion>=0.0.12",
+    "torchsde",
+    "note_seq",
     "librosa",
     "numpy",
     "omegaconf",
@@ -106,6 +108,7 @@
     "safetensors",
     "sentencepiece>=0.1.91,!=0.1.92",
     "scipy",
+    "onnx",
     "regex!=2019.12.17",
     "requests",
     "tensorboard",

src/diffusers/dependency_versions_table.py

@@ -18,6 +18,8 @@
     "jaxlib": "jaxlib>=0.1.65",
     "Jinja2": "Jinja2",
     "k-diffusion": "k-diffusion>=0.0.12",
+    "torchsde": "torchsde",
+    "note_seq": "note_seq",
     "librosa": "librosa",
     "numpy": "numpy",
     "omegaconf": "omegaconf",
@@ -30,6 +32,7 @@
     "safetensors": "safetensors",
     "sentencepiece": "sentencepiece>=0.1.91,!=0.1.92",
     "scipy": "scipy",
+    "onnx": "onnx",
     "regex": "regex!=2019.12.17",
     "requests": "requests",
     "tensorboard": "tensorboard",

tests/others/test_dependencies.py

@@ -0,0 +1,37 @@
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# 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 inspect
+import unittest
+
+
+class DependencyTester(unittest.TestCase):
+    def test_diffusers_import(self):
+        try:
+            import diffusers  # noqa: F401
+        except ImportError:
+            assert False
+
+    def test_backend_registration(self):
+        import diffusers
+        from diffusers.dependency_versions_table import deps
+
+        all_classes = inspect.getmembers(diffusers, inspect.isclass)
+
+        for cls_name, cls_module in all_classes:
+            if "dummy_" in cls_module.__module__:
+                for backend in cls_module._backends:
+                    if backend == "k_diffusion":
+                        backend = "k-diffusion"
+                    assert backend in deps, f"{backend} is not in the deps table!"