[tests] remove test_pipelines_common.py

.ai/references/testing.md

@@ -35,7 +35,7 @@ Follow the style introduced in [#14113](https://github.com/huggingface/diffusers
   - `HunyuanDiTAttentionPool` (`src/diffusers/models/embeddings.py`) shows the same failure without an MHA module: a plain `nn.Module` that hands its `q_proj` / `k_proj` / `v_proj` / `c_proj` weights to `torch.nn.functional.multi_head_attention_forward`, so all four projections stay offloaded rather than just one. `HunyuanDiT2DModel` opts out of group offloading entirely with `_supports_group_offloading = False`.
   - Before adding a skip or an exclusion, confirm the failure still reproduces — several existing skips are stale, having outlived the upstream cause.
 - **A migration that surfaces a `src/` gap marks the test `xfail`, it does not patch the pipeline.** Give the marker a module-level name and a `reason` naming the exact gap (`PNDM_*` in `tests/pipelines/pndm/test_pndm.py` is the worked example), and prefer `strict=True` so the marker reports XPASS — and gets deleted — the day the pipeline is fixed. Use `strict=False` only when one mark covers a group whose members do not all fail. Marking a whole test class keeps the mixin's own marks (`@is_memory`, `@require_accelerator`) intact; overriding individual inherited tests drops the decorators they were declared with, so re-declare those too.
-- **`from_pipe` tests** (a pipeline that is a variant of an existing one — PAG, AnimateDiff, ...) compose the shared `FromPipeTesterMixin` (`tests/pipelines/testing_utils/from_pipe.py`, exported from `..testing_utils`) in their own test class. It derives the original pipeline from `pipeline_class.__name__`; set `original_pipeline_repo` on the test class to pull it from a repo other than the default for that class. The unittest-era `PipelineFromPipeTesterMixin` in `tests/pipelines/test_pipelines_common.py` is what it replaces.
+- **`from_pipe` tests** (a pipeline that is a variant of an existing one — PAG, AnimateDiff, ...) compose the shared `FromPipeTesterMixin` (`tests/pipelines/testing_utils/from_pipe.py`, exported from `..testing_utils`) in their own test class. It derives the original pipeline from `pipeline_class.__name__`; set `original_pipeline_repo` on the test class to pull it from a repo other than the default for that class.
 - **A hardware gap is a conditional skip, not an xfail.** When a test fails only because the runner's cuDNN build has no kernel for an op — `RuntimeError: GET was unable to find an engine to execute this computation`, as Sana's depthwise `Conv2d` hits in bfloat16 — wrap the call in `skip_if_no_cudnn_engine()` (`tests/testing_utils.py`). It skips on that error and re-raises every other `RuntimeError`, so the test still runs wherever the kernel exists.
 - **PAG pipelines** also compose `PAGPipelineTesterMixin` (`tests/pipelines/pag/testing_utils.py`) in place of `PipelineTesterMixin`: it adds `test_pag_disable_enable` and `test_pag_inference` on top, driven by `base_pipeline_class` and the `pag_*` knobs on the test class. Keep `test_pag_applied_layers` per pipeline — which layers PAG resolves to is model-specific.
 - **`encode_prompt` reading a component that isn't a text encoder or tokenizer?** `test_encode_prompt_works_in_isolation` rebuilds the pipeline with only the components whose names contain `text` or `tokenizer`. When `encode_prompt` also needs another one — a `processor` used for chat templating, say — list it in `text_stack_component_names` on the config class rather than re-implementing the test.

.github/workflows/nightly_tests.yml

@@ -54,7 +54,7 @@ jobs:
 
       - name: Pipeline Tests Artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: test-pipelines.json
           path: reports
@@ -108,7 +108,7 @@ jobs:
           cat reports/tests_pipeline_${{ matrix.module }}_cuda_failures_short.txt
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: pipeline_${{ matrix.module }}_test_reports
           path: reports
@@ -180,7 +180,7 @@ jobs:
 
     - name: Test suite reports artifacts
       if: ${{ always() }}
-      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
       with:
         name: torch_${{ matrix.module }}_cuda_test_reports
         path: reports
@@ -225,7 +225,7 @@ jobs:
 
     - name: Test suite reports artifacts
       if: ${{ always() }}
-      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
       with:
         name: torch_compile_test_reports
         path: reports
@@ -279,7 +279,7 @@ jobs:
           cat reports/tests_big_gpu_torch_cuda_failures_short.txt
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: torch_cuda_big_gpu_test_reports
           path: reports
@@ -323,7 +323,6 @@ jobs:
           pytest -n 1 --max-worker-restart=0 --dist=loadfile \
             --make-reports=tests_torch_minimum_version_cuda \
             tests/models/test_modeling_common.py \
-            tests/pipelines/test_pipelines_common.py \
             tests/pipelines/test_pipeline_utils.py \
             tests/pipelines/test_pipelines.py \
             tests/pipelines/test_pipelines_auto.py \
@@ -338,7 +337,7 @@ jobs:
 
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: torch_minimum_version_cuda_test_reports
           path: reports
@@ -410,7 +409,7 @@ jobs:
           cat reports/tests_${{ matrix.config.backend }}_torch_cuda_failures_short.txt
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: torch_cuda_${{ matrix.config.backend }}_reports
           path: reports
@@ -463,7 +462,7 @@ jobs:
           cat reports/tests_pipeline_level_quant_torch_cuda_failures_short.txt
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: torch_cuda_pipeline_level_quant_reports
           path: reports
@@ -496,7 +495,7 @@ jobs:
         run: mkdir -p combined_reports
 
       - name: Download all test reports
-        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131  # v7
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131  # v7.0.0
         with:
           path: artifacts
 
@@ -522,7 +521,7 @@ jobs:
           cat $CONSOLIDATED_REPORT_PATH >> $GITHUB_STEP_SUMMARY
 
       - name: Upload consolidated report
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: consolidated_test_report
           path: ${{ env.CONSOLIDATED_REPORT_PATH }}

.github/workflows/pr_tests_gpu.yml

@@ -12,8 +12,9 @@ on:
       - "src/diffusers/loaders/lora_base.py"
       - "src/diffusers/loaders/lora_pipeline.py"
       - "src/diffusers/loaders/peft.py"
-      - "tests/pipelines/test_pipelines_common.py"
+      - "tests/pipelines/testing_utils/**.py"
       - "tests/models/test_modeling_common.py"
+      - "tests/models/testing_utils/**.py"
       - "examples/**/*.py"
   workflow_dispatch:
 
@@ -93,7 +94,7 @@ jobs:
     runs-on:
       group: aws-general-8-plus
     container:
-      image: diffusers/diffusers-pytorch-cpu
+      image: diffusers/diffusers-pytorch-cpu:latest
     outputs:
       pipeline_test_matrix: ${{ steps.fetch_pipeline_matrix.outputs.pipeline_test_matrix }}
     steps:
@@ -134,7 +135,7 @@ jobs:
     runs-on:
       group: aws-g4dn-2xlarge
     container:
-      image: diffusers/diffusers-pytorch-cuda
+      image: diffusers/diffusers-pytorch-cuda:latest
       options: --shm-size "16gb" --ipc host --gpus all
     steps:
       - name: Checkout diffusers
@@ -200,7 +201,7 @@ jobs:
     runs-on:
       group: aws-g4dn-2xlarge
     container:
-      image: diffusers/diffusers-pytorch-cuda
+      image: diffusers/diffusers-pytorch-cuda:latest
       options: --shm-size "16gb" --ipc host --gpus all
     defaults:
       run:
@@ -272,7 +273,7 @@ jobs:
       group: aws-g4dn-2xlarge
 
     container:
-      image: diffusers/diffusers-pytorch-cuda
+      image: diffusers/diffusers-pytorch-cuda:latest
       options: --gpus all --shm-size "16gb" --ipc host
     steps:
     - name: Checkout diffusers

.github/workflows/release_tests_fast.yml

@@ -213,7 +213,6 @@ jobs:
           pytest -n 1 --max-worker-restart=0 --dist=loadfile \
             --make-reports=tests_torch_minimum_cuda \
             tests/models/test_modeling_common.py \
-            tests/pipelines/test_pipelines_common.py \
             tests/pipelines/test_pipeline_utils.py \
             tests/pipelines/test_pipelines.py \
             tests/pipelines/test_pipelines_auto.py \

tests/models/transformers/test_models_transformer_flux.py

@@ -64,7 +64,7 @@
 
 
 # TODO: This standalone function maintains backward compatibility with pipeline tests
-# (tests/pipelines/test_pipelines_common.py) and will be refactored.
+# (tests/pipelines/testing_utils/ip_adapter.py) and will be refactored.
 def create_flux_ip_adapter_state_dict(model) -> dict[str, dict[str, Any]]:
     """Create a dummy IP Adapter state dict for Flux transformer testing."""
     ip_cross_attn_state_dict = {}

tests/pipelines/deepfloyd_if/test_if.py

@@ -36,11 +36,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     PipelineOffloadTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/deepfloyd_if/test_if_img2img.py

@@ -37,11 +37,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     PipelineOffloadTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/deepfloyd_if/test_if_img2img_superresolution.py

@@ -37,11 +37,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     PipelineOffloadTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/deepfloyd_if/test_if_inpainting.py

@@ -37,11 +37,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     PipelineOffloadTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/deepfloyd_if/test_if_inpainting_superresolution.py

@@ -37,11 +37,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     PipelineOffloadTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/deepfloyd_if/test_if_superresolution.py

@@ -37,11 +37,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     PipelineOffloadTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/kandinsky/test_kandinsky.py

@@ -31,11 +31,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     MemoryTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/kandinsky/test_kandinsky_img2img.py

@@ -44,11 +44,11 @@
     slow,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     MemoryTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/kandinsky/test_kandinsky_inpaint.py

@@ -36,11 +36,11 @@
     require_torch_accelerator,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     MemoryTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/shap_e/test_shap_e.py

@@ -29,11 +29,11 @@
     require_torch_accelerator,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     MemoryTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )
 
 

tests/pipelines/shap_e/test_shap_e_img2img.py

@@ -32,11 +32,11 @@
     require_torch_accelerator,
     torch_device,
 )
-from ..test_pipelines_common import assert_mean_pixel_difference
 from ..testing_utils import (
     BasePipelineTesterConfig,
     MemoryTesterMixin,
     PipelineTesterMixin,
+    assert_mean_pixel_difference,
 )