[modular] add tests for qwen modular (#12585)

* add tests for qwenimage modular.

* qwenimage edit.

* qwenimage edit plus.

* empty

* align with the latest structure

* up

* up

* reason

* up

* fix multiple issues.

* up

* up

* fix

* up

* make it similar to the original pipeline.

src/diffusers/modular_pipelines/qwenimage/before_denoise.py

@@ -132,6 +132,7 @@ class QwenImagePrepareLatentsStep(ModularPipelineBlocks):
     @property
     def inputs(self) -> List[InputParam]:
         return [
+            InputParam("latents"),
             InputParam(name="height"),
             InputParam(name="width"),
             InputParam(name="num_images_per_prompt", default=1),
@@ -196,7 +197,7 @@ class QwenImagePrepareLatentsStep(ModularPipelineBlocks):
                 f"You have passed a list of generators of length {len(block_state.generator)}, but requested an effective batch"
                 f" size of {batch_size}. Make sure the batch size matches the length of the generators."
             )
-
+        if block_state.latents is None:
             block_state.latents = randn_tensor(
                 shape, generator=block_state.generator, device=device, dtype=block_state.dtype
             )
@@ -549,8 +550,7 @@ class QwenImageRoPEInputsStep(ModularPipelineBlocks):
                     block_state.width // components.vae_scale_factor // 2,
                 )
             ]
-            * block_state.batch_size
-        ]
+        ] * block_state.batch_size
         block_state.txt_seq_lens = (
             block_state.prompt_embeds_mask.sum(dim=1).tolist() if block_state.prompt_embeds_mask is not None else None
         )

src/diffusers/modular_pipelines/qwenimage/decoders.py

@@ -74,8 +74,9 @@ class QwenImageDecoderStep(ModularPipelineBlocks):
         block_state = self.get_block_state(state)
 
         # YiYi Notes: remove support for output_type = "latents', we can just skip decode/encode step in modular
+        vae_scale_factor = components.vae_scale_factor
         block_state.latents = components.pachifier.unpack_latents(
-            block_state.latents, block_state.height, block_state.width
+            block_state.latents, block_state.height, block_state.width, vae_scale_factor=vae_scale_factor
         )
         block_state.latents = block_state.latents.to(components.vae.dtype)
 

src/diffusers/modular_pipelines/qwenimage/encoders.py

@@ -503,6 +503,8 @@ class QwenImageTextEncoderStep(ModularPipelineBlocks):
         block_state.prompt_embeds = block_state.prompt_embeds[:, : block_state.max_sequence_length]
         block_state.prompt_embeds_mask = block_state.prompt_embeds_mask[:, : block_state.max_sequence_length]
 
+        block_state.negative_prompt_embeds = None
+        block_state.negative_prompt_embeds_mask = None
         if components.requires_unconditional_embeds:
             negative_prompt = block_state.negative_prompt or ""
             block_state.negative_prompt_embeds, block_state.negative_prompt_embeds_mask = get_qwen_prompt_embeds(
@@ -627,6 +629,8 @@ class QwenImageEditTextEncoderStep(ModularPipelineBlocks):
             device=device,
         )
 
+        block_state.negative_prompt_embeds = None
+        block_state.negative_prompt_embeds_mask = None
         if components.requires_unconditional_embeds:
             negative_prompt = block_state.negative_prompt or " "
             block_state.negative_prompt_embeds, block_state.negative_prompt_embeds_mask = get_qwen_prompt_embeds_edit(
@@ -679,6 +683,8 @@ class QwenImageEditPlusTextEncoderStep(QwenImageEditTextEncoderStep):
             device=device,
         )
 
+        block_state.negative_prompt_embeds = None
+        block_state.negative_prompt_embeds_mask = None
         if components.requires_unconditional_embeds:
             negative_prompt = block_state.negative_prompt or " "
             block_state.negative_prompt_embeds, block_state.negative_prompt_embeds_mask = (

src/diffusers/modular_pipelines/qwenimage/modular_pipeline.py

@@ -26,10 +26,7 @@ class QwenImagePachifier(ConfigMixin):
     config_name = "config.json"
 
     @register_to_config
-    def __init__(
-        self,
-        patch_size: int = 2,
-    ):
+    def __init__(self, patch_size: int = 2):
         super().__init__()
 
     def pack_latents(self, latents):

tests/modular_pipelines/flux/test_modular_pipeline_flux.py

@@ -55,6 +55,9 @@ class TestFluxModularPipelineFast(ModularPipelineTesterMixin):
         }
         return inputs
 
+    def test_float16_inference(self):
+        super().test_float16_inference(9e-2)
+
 
 class TestFluxImg2ImgModularPipelineFast(ModularPipelineTesterMixin):
     pipeline_class = FluxModularPipeline
@@ -118,6 +121,9 @@ class TestFluxImg2ImgModularPipelineFast(ModularPipelineTesterMixin):
 
         assert torch.abs(image_slices[0] - image_slices[1]).max() < 1e-3
 
+    def test_float16_inference(self):
+        super().test_float16_inference(8e-2)
+
 
 class TestFluxKontextModularPipelineFast(ModularPipelineTesterMixin):
     pipeline_class = FluxKontextModularPipeline
@@ -170,3 +176,6 @@ class TestFluxKontextModularPipelineFast(ModularPipelineTesterMixin):
             image_slices.append(image[0, -3:, -3:, -1].flatten())
 
         assert torch.abs(image_slices[0] - image_slices[1]).max() < 1e-3
+
+    def test_float16_inference(self):
+        super().test_float16_inference(9e-2)

tests/modular_pipelines/qwen/test_modular_pipeline_qwenimage.py

+# coding=utf-8
+# Copyright 2025 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 PIL
+import pytest
+
+from diffusers.modular_pipelines import (
+    QwenImageAutoBlocks,
+    QwenImageEditAutoBlocks,
+    QwenImageEditModularPipeline,
+    QwenImageEditPlusAutoBlocks,
+    QwenImageEditPlusModularPipeline,
+    QwenImageModularPipeline,
+)
+
+from ..test_modular_pipelines_common import ModularGuiderTesterMixin, ModularPipelineTesterMixin
+
+
+class TestQwenImageModularPipelineFast(ModularPipelineTesterMixin, ModularGuiderTesterMixin):
+    pipeline_class = QwenImageModularPipeline
+    pipeline_blocks_class = QwenImageAutoBlocks
+    repo = "hf-internal-testing/tiny-qwenimage-modular"
+
+    params = frozenset(["prompt", "height", "width", "negative_prompt", "attention_kwargs", "image", "mask_image"])
+    batch_params = frozenset(["prompt", "negative_prompt", "image", "mask_image"])
+
+    def get_dummy_inputs(self):
+        generator = self.get_generator()
+        inputs = {
+            "prompt": "dance monkey",
+            "negative_prompt": "bad quality",
+            "generator": generator,
+            "num_inference_steps": 2,
+            "height": 32,
+            "width": 32,
+            "max_sequence_length": 16,
+            "output_type": "pt",
+        }
+        return inputs
+
+    def test_inference_batch_single_identical(self):
+        super().test_inference_batch_single_identical(expected_max_diff=5e-4)
+
+
+class TestQwenImageEditModularPipelineFast(ModularPipelineTesterMixin, ModularGuiderTesterMixin):
+    pipeline_class = QwenImageEditModularPipeline
+    pipeline_blocks_class = QwenImageEditAutoBlocks
+    repo = "hf-internal-testing/tiny-qwenimage-edit-modular"
+
+    params = frozenset(["prompt", "height", "width", "negative_prompt", "attention_kwargs", "image", "mask_image"])
+    batch_params = frozenset(["prompt", "negative_prompt", "image", "mask_image"])
+
+    def get_dummy_inputs(self):
+        generator = self.get_generator()
+        inputs = {
+            "prompt": "dance monkey",
+            "negative_prompt": "bad quality",
+            "generator": generator,
+            "num_inference_steps": 2,
+            "height": 32,
+            "width": 32,
+            "output_type": "pt",
+        }
+        inputs["image"] = PIL.Image.new("RGB", (32, 32), 0)
+        return inputs
+
+    def test_guider_cfg(self):
+        super().test_guider_cfg(7e-5)
+
+
+class TestQwenImageEditPlusModularPipelineFast(ModularPipelineTesterMixin, ModularGuiderTesterMixin):
+    pipeline_class = QwenImageEditPlusModularPipeline
+    pipeline_blocks_class = QwenImageEditPlusAutoBlocks
+    repo = "hf-internal-testing/tiny-qwenimage-edit-plus-modular"
+
+    # No `mask_image` yet.
+    params = frozenset(["prompt", "height", "width", "negative_prompt", "attention_kwargs", "image"])
+    batch_params = frozenset(["prompt", "negative_prompt", "image"])
+
+    def get_dummy_inputs(self):
+        generator = self.get_generator()
+        inputs = {
+            "prompt": "dance monkey",
+            "negative_prompt": "bad quality",
+            "generator": generator,
+            "num_inference_steps": 2,
+            "height": 32,
+            "width": 32,
+            "output_type": "pt",
+        }
+        inputs["image"] = PIL.Image.new("RGB", (32, 32), 0)
+        return inputs
+
+    @pytest.mark.xfail(condition=True, reason="Batch of multiple images needs to be revisited", strict=True)
+    def test_num_images_per_prompt(self):
+        super().test_num_images_per_prompt()
+
+    @pytest.mark.xfail(condition=True, reason="Batch of multiple images needs to be revisited", strict=True)
+    def test_inference_batch_consistent():
+        super().test_inference_batch_consistent()
+
+    @pytest.mark.xfail(condition=True, reason="Batch of multiple images needs to be revisited", strict=True)
+    def test_inference_batch_single_identical():
+        super().test_inference_batch_single_identical()
+
+    def test_guider_cfg(self):
+        super().test_guider_cfg(1e-3)

tests/modular_pipelines/stable_diffusion_xl/test_modular_pipeline_stable_diffusion_xl.py

@@ -25,7 +25,7 @@ from diffusers.loaders import ModularIPAdapterMixin
 
 from ...models.unets.test_models_unet_2d_condition import create_ip_adapter_state_dict
 from ...testing_utils import enable_full_determinism, floats_tensor, torch_device
-from ..test_modular_pipelines_common import ModularPipelineTesterMixin
+from ..test_modular_pipelines_common import ModularGuiderTesterMixin, ModularPipelineTesterMixin
 
 
 enable_full_determinism()
@@ -37,13 +37,11 @@ class SDXLModularTesterMixin:
     """
 
     def _test_stable_diffusion_xl_euler(self, expected_image_shape, expected_slice, expected_max_diff=1e-2):
-        sd_pipe = self.get_pipeline()
-        sd_pipe = sd_pipe.to(torch_device)
-        sd_pipe.set_progress_bar_config(disable=None)
+        sd_pipe = self.get_pipeline().to(torch_device)
 
         inputs = self.get_dummy_inputs()
         image = sd_pipe(**inputs, output="images")
-        image_slice = image[0, -3:, -3:, -1]
+        image_slice = image[0, -3:, -3:, -1].cpu()
 
         assert image.shape == expected_image_shape
         max_diff = torch.abs(image_slice.flatten() - expected_slice).max()
@@ -110,7 +108,7 @@ class SDXLModularIPAdapterTesterMixin:
         pipe = blocks.init_pipeline(self.repo)
         pipe.load_components(torch_dtype=torch.float32)
         pipe = pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
+
         cross_attention_dim = pipe.unet.config.get("cross_attention_dim")
 
         # forward pass without ip adapter
@@ -219,9 +217,7 @@ class SDXLModularControlNetTesterMixin:
         # compare against static slices and that can be shaky (with a VVVV low probability).
         expected_max_diff = 9e-4 if torch_device == "cpu" else expected_max_diff
 
-        pipe = self.get_pipeline()
-        pipe = pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
+        pipe = self.get_pipeline().to(torch_device)
 
         # forward pass without controlnet
         inputs = self.get_dummy_inputs()
@@ -251,9 +247,7 @@ class SDXLModularControlNetTesterMixin:
         assert max_diff_with_controlnet_scale > 1e-2, "Output with controlnet must be different from normal inference"
 
     def test_controlnet_cfg(self):
-        pipe = self.get_pipeline()
-        pipe = pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
+        pipe = self.get_pipeline().to(torch_device)
 
         # forward pass with CFG not applied
         guider = ClassifierFreeGuidance(guidance_scale=1.0)
@@ -273,35 +267,11 @@ class SDXLModularControlNetTesterMixin:
         assert max_diff > 1e-2, "Output with CFG must be different from normal inference"
 
 
-class SDXLModularGuiderTesterMixin:
-    def test_guider_cfg(self):
-        pipe = self.get_pipeline()
-        pipe = pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
-
-        # forward pass with CFG not applied
-        guider = ClassifierFreeGuidance(guidance_scale=1.0)
-        pipe.update_components(guider=guider)
-
-        inputs = self.get_dummy_inputs()
-        out_no_cfg = pipe(**inputs, output="images")
-
-        # forward pass with CFG applied
-        guider = ClassifierFreeGuidance(guidance_scale=7.5)
-        pipe.update_components(guider=guider)
-        inputs = self.get_dummy_inputs()
-        out_cfg = pipe(**inputs, output="images")
-
-        assert out_cfg.shape == out_no_cfg.shape
-        max_diff = np.abs(out_cfg - out_no_cfg).max()
-        assert max_diff > 1e-2, "Output with CFG must be different from normal inference"
-
-
 class TestSDXLModularPipelineFast(
     SDXLModularTesterMixin,
     SDXLModularIPAdapterTesterMixin,
     SDXLModularControlNetTesterMixin,
-    SDXLModularGuiderTesterMixin,
+    ModularGuiderTesterMixin,
     ModularPipelineTesterMixin,
 ):
     """Test cases for Stable Diffusion XL modular pipeline fast tests."""
@@ -335,18 +305,7 @@ class TestSDXLModularPipelineFast(
         self._test_stable_diffusion_xl_euler(
             expected_image_shape=self.expected_image_output_shape,
             expected_slice=torch.tensor(
-                [
-                    0.5966781,
-                    0.62939394,
-                    0.48465094,
-                    0.51573336,
-                    0.57593524,
-                    0.47035995,
-                    0.53410417,
-                    0.51436996,
-                    0.47313565,
-                ],
-                device=torch_device,
+                [0.3886, 0.4685, 0.4953, 0.4217, 0.4317, 0.3945, 0.4847, 0.4704, 0.4731],
             ),
             expected_max_diff=1e-2,
         )
@@ -359,7 +318,7 @@ class TestSDXLImg2ImgModularPipelineFast(
     SDXLModularTesterMixin,
     SDXLModularIPAdapterTesterMixin,
     SDXLModularControlNetTesterMixin,
-    SDXLModularGuiderTesterMixin,
+    ModularGuiderTesterMixin,
     ModularPipelineTesterMixin,
 ):
     """Test cases for Stable Diffusion XL image-to-image modular pipeline fast tests."""
@@ -400,20 +359,7 @@ class TestSDXLImg2ImgModularPipelineFast(
     def test_stable_diffusion_xl_euler(self):
         self._test_stable_diffusion_xl_euler(
             expected_image_shape=self.expected_image_output_shape,
-            expected_slice=torch.tensor(
-                [
-                    0.56943184,
-                    0.4702148,
-                    0.48048905,
-                    0.6235963,
-                    0.551138,
-                    0.49629188,
-                    0.60031277,
-                    0.5688907,
-                    0.43996853,
-                ],
-                device=torch_device,
-            ),
+            expected_slice=torch.tensor([0.5246, 0.4466, 0.444, 0.3246, 0.4443, 0.5108, 0.5225, 0.559, 0.5147]),
             expected_max_diff=1e-2,
         )
 
@@ -425,7 +371,7 @@ class SDXLInpaintingModularPipelineFastTests(
     SDXLModularTesterMixin,
     SDXLModularIPAdapterTesterMixin,
     SDXLModularControlNetTesterMixin,
-    SDXLModularGuiderTesterMixin,
+    ModularGuiderTesterMixin,
     ModularPipelineTesterMixin,
 ):
     """Test cases for Stable Diffusion XL inpainting modular pipeline fast tests."""

tests/modular_pipelines/test_modular_pipelines_common.py

@@ -2,22 +2,17 @@ import gc
 import tempfile
 from typing import Callable, Union
 
+import pytest
 import torch
 
 import diffusers
 from diffusers import ComponentsManager, ModularPipeline, ModularPipelineBlocks
+from diffusers.guiders import ClassifierFreeGuidance
 from diffusers.utils import logging
 
-from ..testing_utils import (
-    backend_empty_cache,
-    numpy_cosine_similarity_distance,
-    require_accelerator,
-    require_torch,
-    torch_device,
-)
+from ..testing_utils import backend_empty_cache, numpy_cosine_similarity_distance, require_accelerator, torch_device
 
 
-@require_torch
 class ModularPipelineTesterMixin:
     """
     It provides a set of common tests for each modular pipeline,
@@ -32,20 +27,9 @@ class ModularPipelineTesterMixin:
     # Canonical parameters that are passed to `__call__` regardless
     # of the type of pipeline. They are always optional and have common
     # sense default values.
-    optional_params = frozenset(
-        [
-            "num_inference_steps",
-            "num_images_per_prompt",
-            "latents",
-            "output_type",
-        ]
-    )
+    optional_params = frozenset(["num_inference_steps", "num_images_per_prompt", "latents", "output_type"])
     # this is modular specific: generator needs to be a intermediate input because it's mutable
-    intermediate_params = frozenset(
-        [
-            "generator",
-        ]
-    )
+    intermediate_params = frozenset(["generator"])
 
     def get_generator(self, seed=0):
         generator = torch.Generator("cpu").manual_seed(seed)
@@ -121,6 +105,7 @@ class ModularPipelineTesterMixin:
     def get_pipeline(self, components_manager=None, torch_dtype=torch.float32):
         pipeline = self.pipeline_blocks_class().init_pipeline(self.repo, components_manager=components_manager)
         pipeline.load_components(torch_dtype=torch_dtype)
+        pipeline.set_progress_bar_config(disable=None)
         return pipeline
 
     def test_pipeline_call_signature(self):
@@ -138,9 +123,7 @@ class ModularPipelineTesterMixin:
         _check_for_parameters(self.optional_params, optional_parameters, "optional")
 
     def test_inference_batch_consistent(self, batch_sizes=[2], batch_generator=True):
-        pipe = self.get_pipeline()
-        pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
+        pipe = self.get_pipeline().to(torch_device)
 
         inputs = self.get_dummy_inputs()
         inputs["generator"] = self.get_generator(0)
@@ -179,9 +162,8 @@ class ModularPipelineTesterMixin:
         batch_size=2,
         expected_max_diff=1e-4,
     ):
-        pipe = self.get_pipeline()
-        pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
+        pipe = self.get_pipeline().to(torch_device)
+
         inputs = self.get_dummy_inputs()
 
         # Reset generator in case it is has been used in self.get_dummy_inputs
@@ -219,11 +201,9 @@ class ModularPipelineTesterMixin:
     def test_float16_inference(self, expected_max_diff=5e-2):
         pipe = self.get_pipeline()
         pipe.to(torch_device, torch.float32)
-        pipe.set_progress_bar_config(disable=None)
 
         pipe_fp16 = self.get_pipeline()
         pipe_fp16.to(torch_device, torch.float16)
-        pipe_fp16.set_progress_bar_config(disable=None)
 
         inputs = self.get_dummy_inputs()
         # Reset generator in case it is used inside dummy inputs
@@ -237,7 +217,6 @@ class ModularPipelineTesterMixin:
             fp16_inputs["generator"] = self.get_generator(0)
         output_fp16 = pipe_fp16(**fp16_inputs, output="images")
 
-        if isinstance(output, torch.Tensor):
         output = output.cpu()
         output_fp16 = output_fp16.cpu()
 
@@ -246,10 +225,8 @@ class ModularPipelineTesterMixin:
 
     @require_accelerator
     def test_to_device(self):
-        pipe = self.get_pipeline()
-        pipe.set_progress_bar_config(disable=None)
+        pipe = self.get_pipeline().to("cpu")
 
-        pipe.to("cpu")
         model_devices = [
             component.device.type for component in pipe.components.values() if hasattr(component, "device")
         ]
@@ -264,30 +241,23 @@ class ModularPipelineTesterMixin:
         )
 
     def test_inference_is_not_nan_cpu(self):
-        pipe = self.get_pipeline()
-        pipe.set_progress_bar_config(disable=None)
-        pipe.to("cpu")
+        pipe = self.get_pipeline().to("cpu")
 
         output = pipe(**self.get_dummy_inputs(), output="images")
         assert torch.isnan(output).sum() == 0, "CPU Inference returns NaN"
 
     @require_accelerator
     def test_inference_is_not_nan(self):
-        pipe = self.get_pipeline()
-        pipe.set_progress_bar_config(disable=None)
-        pipe.to(torch_device)
+        pipe = self.get_pipeline().to(torch_device)
 
         output = pipe(**self.get_dummy_inputs(), output="images")
         assert torch.isnan(output).sum() == 0, "Accelerator Inference returns NaN"
 
     def test_num_images_per_prompt(self):
-        pipe = self.get_pipeline()
+        pipe = self.get_pipeline().to(torch_device)
 
         if "num_images_per_prompt" not in pipe.blocks.input_names:
-            return
-
-        pipe = pipe.to(torch_device)
-        pipe.set_progress_bar_config(disable=None)
+            pytest.mark.skip("Skipping test as `num_images_per_prompt` is not present in input names.")
 
         batch_sizes = [1, 2]
         num_images_per_prompts = [1, 2]
@@ -342,3 +312,25 @@ class ModularPipelineTesterMixin:
             image_slices.append(image[0, -3:, -3:, -1].flatten())
 
         assert torch.abs(image_slices[0] - image_slices[1]).max() < 1e-3
+
+
+class ModularGuiderTesterMixin:
+    def test_guider_cfg(self, expected_max_diff=1e-2):
+        pipe = self.get_pipeline().to(torch_device)
+
+        # forward pass with CFG not applied
+        guider = ClassifierFreeGuidance(guidance_scale=1.0)
+        pipe.update_components(guider=guider)
+
+        inputs = self.get_dummy_inputs()
+        out_no_cfg = pipe(**inputs, output="images")
+
+        # forward pass with CFG applied
+        guider = ClassifierFreeGuidance(guidance_scale=7.5)
+        pipe.update_components(guider=guider)
+        inputs = self.get_dummy_inputs()
+        out_cfg = pipe(**inputs, output="images")
+
+        assert out_cfg.shape == out_no_cfg.shape
+        max_diff = torch.abs(out_cfg - out_no_cfg).max()
+        assert max_diff > expected_max_diff, "Output with CFG must be different from normal inference"