Merge branch 'main' into refactor-caching-tests

src/diffusers/commands/daggr_app.py

@@ -1,447 +0,0 @@
-# Copyright 2025 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 ast
-import re
-from argparse import ArgumentParser, Namespace
-from collections import OrderedDict
-from dataclasses import dataclass, field
-
-from ..utils import logging
-from . import BaseDiffusersCLICommand
-
-
-logger = logging.get_logger("diffusers-cli/daggr")
-
-INTERNAL_TYPE_NAMES = {
-    "Tensor",
-    "Generator",
-}
-
-INTERNAL_TYPE_FULL_NAMES = {
-    "torch.Tensor",
-    "torch.Generator",
-    "torch.dtype",
-}
-
-SLIDER_PARAMS = {
-    "height": {"minimum": 256, "maximum": 2048, "step": 64},
-    "width": {"minimum": 256, "maximum": 2048, "step": 64},
-    "num_inference_steps": {"minimum": 1, "maximum": 100, "step": 1},
-    "guidance_scale": {"minimum": 0, "maximum": 30, "step": 0.5},
-    "strength": {"minimum": 0, "maximum": 1, "step": 0.05},
-    "control_guidance_start": {"minimum": 0, "maximum": 1, "step": 0.05},
-    "control_guidance_end": {"minimum": 0, "maximum": 1, "step": 0.05},
-    "controlnet_conditioning_scale": {"minimum": 0, "maximum": 2, "step": 0.1},
-}
-
-
-@dataclass
-class BlockInfo:
-    name: str
-    class_name: str
-    description: str
-    inputs: list
-    outputs: list
-    user_inputs: list = field(default_factory=list)
-    port_connections: list = field(default_factory=list)
-    fixed_inputs: list = field(default_factory=list)
-
-
-def daggr_command_factory(args: Namespace):
-    return DaggrCommand(
-        repo_id=args.repo_id,
-        output=args.output or "daggr_app.py",
-        workflow=getattr(args, "workflow", None),
-        trigger_inputs=getattr(args, "trigger_inputs", None),
-    )
-
-
-class DaggrCommand(BaseDiffusersCLICommand):
-    @staticmethod
-    def register_subcommand(parser: ArgumentParser):
-        daggr_parser = parser.add_parser("daggr", help="Generate a daggr app from a modular pipeline repo.")
-        daggr_parser.add_argument(
-            "repo_id",
-            type=str,
-            help="HuggingFace Hub repo ID containing a modular pipeline (with modular_model_index.json).",
-        )
-        daggr_parser.add_argument(
-            "--output",
-            type=str,
-            default="daggr_app.py",
-            help="Output file path for the generated daggr app. Default: daggr_app.py",
-        )
-        daggr_parser.add_argument(
-            "--workflow",
-            type=str,
-            default=None,
-            help="Named workflow to resolve conditional blocks (e.g. 'text2image', 'image2image').",
-        )
-        daggr_parser.add_argument(
-            "--trigger-inputs",
-            nargs="*",
-            default=None,
-            help="Trigger input names for manual conditional resolution.",
-        )
-        daggr_parser.set_defaults(func=daggr_command_factory)
-
-    def __init__(
-        self,
-        repo_id: str,
-        output: str = "daggr_app.py",
-        workflow: str | None = None,
-        trigger_inputs: list | None = None,
-    ):
-        self.repo_id = repo_id
-        self.output = output
-        self.workflow = workflow
-        self.trigger_inputs = trigger_inputs
-
-    def run(self):
-        from ..modular_pipelines.modular_pipeline import ModularPipelineBlocks
-
-        logger.info(f"Loading blocks from {self.repo_id}...")
-        blocks = ModularPipelineBlocks.from_pretrained(self.repo_id, trust_remote_code=True)
-        blocks_class_name = blocks.__class__.__name__
-
-        if self.workflow:
-            logger.info(f"Resolving workflow: {self.workflow}")
-            exec_blocks = blocks.get_workflow(self.workflow)
-        elif self.trigger_inputs:
-            trigger_kwargs = {name: True for name in self.trigger_inputs}
-            logger.info(f"Resolving with trigger inputs: {self.trigger_inputs}")
-            exec_blocks = blocks.get_execution_blocks(**trigger_kwargs)
-        else:
-            logger.info("Resolving default execution blocks...")
-            exec_blocks = blocks.get_execution_blocks()
-
-        block_infos = _analyze_blocks(exec_blocks)
-        _classify_inputs(block_infos)
-
-        workflow_label = self.workflow or "default"
-        workflow_resolve_code = self._get_workflow_resolve_code()
-        code = _generate_code(block_infos, self.repo_id, blocks_class_name, workflow_label, workflow_resolve_code)
-
-        try:
-            ast.parse(code)
-        except SyntaxError as e:
-            logger.warning(f"Generated code has syntax error: {e}")
-
-        with open(self.output, "w") as f:
-            f.write(code)
-
-        logger.info(f"Daggr app written to {self.output}")
-        print(f"Generated daggr app: {self.output}")
-        print(f"  Pipeline: {blocks_class_name}")
-        print(f"  Workflow: {workflow_label}")
-        print(f"  Blocks: {len(block_infos)}")
-        print(f"\nRun with: python {self.output}")
-
-    def _get_workflow_resolve_code(self):
-        if self.workflow:
-            return f"_pipeline._blocks.get_workflow({self.workflow!r})"
-        elif self.trigger_inputs:
-            kwargs_str = ", ".join(f"{name!r}: True" for name in self.trigger_inputs)
-            return f"_pipeline._blocks.get_execution_blocks(**{{{kwargs_str}}})"
-        else:
-            return "_pipeline._blocks.get_execution_blocks()"
-
-
-def _analyze_blocks(exec_blocks):
-    block_infos = []
-    for name, block in exec_blocks.sub_blocks.items():
-        info = BlockInfo(
-            name=name,
-            class_name=block.__class__.__name__,
-            description=getattr(block, "description", "") or "",
-            inputs=list(block.inputs) if hasattr(block, "inputs") else [],
-            outputs=list(block.intermediate_outputs) if hasattr(block, "intermediate_outputs") else [],
-        )
-        block_infos.append(info)
-    return block_infos
-
-
-def _get_type_name(type_hint):
-    if type_hint is None:
-        return None
-    if hasattr(type_hint, "__name__"):
-        return type_hint.__name__
-    if hasattr(type_hint, "__module__") and hasattr(type_hint, "__qualname__"):
-        return f"{type_hint.__module__}.{type_hint.__qualname__}"
-    return str(type_hint)
-
-
-def _is_internal_type(type_hint):
-    if type_hint is None:
-        return True
-    type_name = _get_type_name(type_hint)
-    if type_name is None:
-        return True
-    if type_name in INTERNAL_TYPE_NAMES or type_name in INTERNAL_TYPE_FULL_NAMES:
-        return True
-    type_str = str(type_hint)
-    for full_name in INTERNAL_TYPE_FULL_NAMES:
-        if full_name in type_str:
-            return True
-    if type_str.startswith("dict[") or type_str == "dict":
-        return True
-    return False
-
-
-def _type_hint_to_gradio(type_hint, param_name, default=None):
-    if _is_internal_type(type_hint):
-        return None
-
-    if param_name in SLIDER_PARAMS:
-        slider_opts = SLIDER_PARAMS[param_name]
-        val = default if default is not None else slider_opts.get("minimum", 0)
-        return (
-            f'gr.Slider(label="{param_name}", value={val!r}, '
-            f"minimum={slider_opts['minimum']}, maximum={slider_opts['maximum']}, "
-            f"step={slider_opts['step']})"
-        )
-
-    type_name = _get_type_name(type_hint)
-    type_str = str(type_hint)
-
-    if type_name == "str" or type_hint is str:
-        lines = 3 if "prompt" in param_name else 1
-        default_repr = f", value={default!r}" if default is not None else ""
-        return f'gr.Textbox(label="{param_name}", lines={lines}{default_repr})'
-
-    if type_name == "int" or type_hint is int:
-        val = f", value={default!r}" if default is not None else ""
-        return f'gr.Number(label="{param_name}", precision=0{val})'
-
-    if type_name == "float" or type_hint is float:
-        val = f", value={default!r}" if default is not None else ""
-        return f'gr.Number(label="{param_name}"{val})'
-
-    if type_name == "bool" or type_hint is bool:
-        val = default if default is not None else False
-        return f'gr.Checkbox(label="{param_name}", value={val!r})'
-
-    if "Image" in type_str:
-        if "list" in type_str.lower():
-            return f'gr.Gallery(label="{param_name}")'
-        return f'gr.Image(label="{param_name}")'
-
-    if default is not None:
-        return f'gr.Textbox(label="{param_name}", value={default!r})'
-
-    return f'gr.Textbox(label="{param_name}")'
-
-
-def _output_type_to_gradio(type_hint, param_name):
-    if _is_internal_type(type_hint):
-        return None
-    type_str = str(type_hint)
-    if "Image" in type_str:
-        if "list" in type_str.lower():
-            return f'gr.Gallery(label="{param_name}")'
-        return f'gr.Image(label="{param_name}")'
-    if type_hint is str:
-        return f'gr.Textbox(label="{param_name}")'
-    if type_hint is int or type_hint is float:
-        return f'gr.Number(label="{param_name}")'
-    return None
-
-
-def _classify_inputs(block_infos):
-    all_prior_outputs = {}
-
-    for info in block_infos:
-        user_inputs = []
-        port_connections = []
-        fixed_inputs = []
-
-        for inp in info.inputs:
-            if inp.name is None:
-                continue
-            if inp.name in all_prior_outputs:
-                port_connections.append((inp.name, all_prior_outputs[inp.name]))
-            elif _is_internal_type(inp.type_hint):
-                fixed_inputs.append(inp)
-            else:
-                user_inputs.append(inp)
-
-        info.user_inputs = user_inputs
-        info.port_connections = port_connections
-        info.fixed_inputs = fixed_inputs
-
-        for out in info.outputs:
-            if out.name and out.name not in all_prior_outputs:
-                all_prior_outputs[out.name] = info.name
-
-
-def _sanitize_name(name):
-    sanitized = re.sub(r"[^a-zA-Z0-9_]", "_", name)
-    if sanitized and sanitized[0].isdigit():
-        sanitized = f"_{sanitized}"
-    return sanitized
-
-
-def _generate_code(block_infos, repo_id, blocks_class_name, workflow_label, workflow_resolve_code):
-    lines = []
-
-    lines.append(f'"""Daggr app for {blocks_class_name} ({workflow_label} workflow)')
-    lines.append("Generated by: diffusers-cli daggr")
-    lines.append('"""')
-    lines.append("")
-    lines.append("import gradio as gr")
-    lines.append("from daggr import FnNode, InputNode, Graph")
-    lines.append("")
-    lines.append("")
-
-    # Pipeline and resolved blocks loader
-    lines.append("_pipeline = None")
-    lines.append("_exec_blocks = None")
-    lines.append("")
-    lines.append("")
-    lines.append("def _get_pipeline():")
-    lines.append("    global _pipeline, _exec_blocks")
-    lines.append("    if _pipeline is None:")
-    lines.append("        from diffusers import ModularPipeline")
-    lines.append(f"        _pipeline = ModularPipeline.from_pretrained({repo_id!r}, trust_remote_code=True)")
-    lines.append("        _pipeline.load_components()")
-    lines.append(f"        _exec_blocks = {workflow_resolve_code}")
-    lines.append("    return _pipeline, _exec_blocks")
-    lines.append("")
-    lines.append("")
-
-    # Wrapper functions
-    for info in block_infos:
-        fn_name = f"run_{_sanitize_name(info.name)}"
-        all_input_names = []
-        for inp in info.inputs:
-            if inp.name is not None:
-                all_input_names.append(inp.name)
-
-        params = ", ".join(all_input_names)
-        lines.append(f"def {fn_name}({params}):")
-        lines.append("    from diffusers.modular_pipelines.modular_pipeline import PipelineState")
-        lines.append("")
-        lines.append("    pipe, exec_blocks = _get_pipeline()")
-        lines.append("    state = PipelineState()")
-        for inp_name in all_input_names:
-            lines.append(f'    state.set("{inp_name}", {inp_name})')
-        lines.append(f'    block = exec_blocks.sub_blocks["{info.name}"]')
-        lines.append("    _, state = block(pipe, state)")
-
-        if len(info.outputs) == 0:
-            lines.append("    return None")
-        elif len(info.outputs) == 1:
-            out = info.outputs[0]
-            lines.append(f'    return state.get("{out.name}")')
-        else:
-            out_names = [out.name for out in info.outputs]
-            out_dict = ", ".join(f'"{n}": state.get("{n}")' for n in out_names)
-            lines.append(f"    return {{{out_dict}}}")
-        lines.append("")
-        lines.append("")
-
-    # Collect all user-facing inputs across blocks
-    all_user_inputs = OrderedDict()
-    for info in block_infos:
-        for inp in info.user_inputs:
-            if inp.name not in all_user_inputs:
-                all_user_inputs[inp.name] = inp
-
-    # InputNode
-    if all_user_inputs:
-        lines.append("# -- User Inputs --")
-        lines.append('user_inputs = InputNode("User Inputs", ports={')
-        for inp_name, inp in all_user_inputs.items():
-            gradio_comp = _type_hint_to_gradio(inp.type_hint, inp_name, inp.default)
-            if gradio_comp:
-                lines.append(f'    "{inp_name}": {gradio_comp},')
-        lines.append("})")
-        lines.append("")
-        lines.append("")
-
-    # FnNode definitions
-    lines.append("# -- Pipeline Blocks --")
-    node_var_names = {}
-
-    for info in block_infos:
-        var_name = f"{_sanitize_name(info.name)}_node"
-        node_var_names[info.name] = var_name
-        fn_name = f"run_{_sanitize_name(info.name)}"
-
-        display_name = info.name.replace("_", " ").replace(".", " > ").title()
-
-        # Build inputs dict
-        input_entries = []
-        for inp in info.inputs:
-            if inp.name is None:
-                continue
-
-            connected = False
-            for conn_name, source_block in info.port_connections:
-                if conn_name == inp.name:
-                    source_var = node_var_names[source_block]
-                    input_entries.append(f'    "{inp.name}": {source_var}.{inp.name},')
-                    connected = True
-                    break
-
-            if not connected:
-                if inp.name in all_user_inputs:
-                    input_entries.append(f'    "{inp.name}": user_inputs.{inp.name},')
-                elif inp.default is not None:
-                    input_entries.append(f'    "{inp.name}": {inp.default!r},')
-                else:
-                    input_entries.append(f'    "{inp.name}": None,')
-
-        # Build outputs dict
-        output_entries = []
-        for out in info.outputs:
-            gradio_out = _output_type_to_gradio(out.type_hint, out.name)
-            if gradio_out:
-                output_entries.append(f'    "{out.name}": {gradio_out},')
-            else:
-                output_entries.append(f'    "{out.name}": None,')
-
-        lines.append(f"{var_name} = FnNode(")
-        lines.append(f"    fn={fn_name},")
-        lines.append(f'    name="{display_name}",')
-
-        if input_entries:
-            lines.append("    inputs={")
-            lines.extend(input_entries)
-            lines.append("    },")
-
-        if output_entries:
-            lines.append("    outputs={")
-            lines.extend(output_entries)
-            lines.append("    },")
-
-        lines.append(")")
-        lines.append("")
-
-    # Graph
-    lines.append("")
-    lines.append("# -- Graph --")
-    all_node_vars = []
-    if all_user_inputs:
-        all_node_vars.append("user_inputs")
-    all_node_vars.extend(node_var_names[info.name] for info in block_infos)
-
-    graph_name = f"{blocks_class_name} - {workflow_label}"
-    nodes_str = ", ".join(all_node_vars)
-    lines.append(f'graph = Graph("{graph_name}", nodes=[{nodes_str}])')
-    lines.append("graph.launch()")
-    lines.append("")
-
-    return "\n".join(lines)

src/diffusers/commands/diffusers_cli.py

@@ -16,7 +16,6 @@
 from argparse import ArgumentParser
 
 from .custom_blocks import CustomBlocksCommand
-from .daggr_app import DaggrCommand
 from .env import EnvironmentCommand
 from .fp16_safetensors import FP16SafetensorsCommand
 
@@ -29,7 +28,6 @@ def main():
     EnvironmentCommand.register_subcommand(commands_parser)
     FP16SafetensorsCommand.register_subcommand(commands_parser)
     CustomBlocksCommand.register_subcommand(commands_parser)
-    DaggrCommand.register_subcommand(commands_parser)
 
     # Let's go
     args = parser.parse_args()

src/diffusers/quantizers/quantization_config.py

@@ -36,7 +36,7 @@ from typing import Any, Callable
 
 from packaging import version
 
-from ..utils import deprecate, is_torch_available, is_torchao_available, is_torchao_version, logging
+from ..utils import is_torch_available, is_torchao_available, is_torchao_version, logging
 
 
 if is_torch_available():
@@ -844,8 +844,6 @@ class QuantoConfig(QuantizationConfigMixin):
         modules_to_not_convert: list[str] | None = None,
         **kwargs,
     ):
-        deprecation_message = "`QuantoConfig` is deprecated and will be removed in version 1.0.0."
-        deprecate("QuantoConfig", "1.0.0", deprecation_message)
         self.quant_method = QuantizationMethod.QUANTO
         self.weights_dtype = weights_dtype
         self.modules_to_not_convert = modules_to_not_convert

src/diffusers/quantizers/quanto/quanto_quantizer.py

@@ -3,7 +3,6 @@ from typing import TYPE_CHECKING, Any
 from diffusers.utils.import_utils import is_optimum_quanto_version
 
 from ...utils import (
-    deprecate,
     get_module_from_name,
     is_accelerate_available,
     is_accelerate_version,
@@ -43,9 +42,6 @@ class QuantoQuantizer(DiffusersQuantizer):
         super().__init__(quantization_config, **kwargs)
 
     def validate_environment(self, *args, **kwargs):
-        deprecation_message = "The Quanto quantizer is deprecated and will be removed in version 1.0.0."
-        deprecate("QuantoQuantizer", "1.0.0", deprecation_message)
-
         if not is_optimum_quanto_available():
             raise ImportError(
                 "Loading an optimum-quanto quantized model requires optimum-quanto library (`pip install optimum-quanto`)"

tests/hooks/test_mag_cache.py

@@ -1,244 +0,0 @@
-# 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 unittest
-
-import numpy as np
-import torch
-
-from diffusers import MagCacheConfig, apply_mag_cache
-from diffusers.hooks._helpers import TransformerBlockMetadata, TransformerBlockRegistry
-from diffusers.models import ModelMixin
-from diffusers.utils import logging
-
-
-logger = logging.get_logger(__name__)
-
-
-class DummyBlock(torch.nn.Module):
-    def __init__(self):
-        super().__init__()
-
-    def forward(self, hidden_states, encoder_hidden_states=None, **kwargs):
-        # Output is double input
-        # This ensures Residual = 2*Input - Input = Input
-        return hidden_states * 2.0
-
-
-class DummyTransformer(ModelMixin):
-    def __init__(self):
-        super().__init__()
-        self.transformer_blocks = torch.nn.ModuleList([DummyBlock(), DummyBlock()])
-
-    def forward(self, hidden_states, encoder_hidden_states=None):
-        for block in self.transformer_blocks:
-            hidden_states = block(hidden_states, encoder_hidden_states=encoder_hidden_states)
-        return hidden_states
-
-
-class TupleOutputBlock(torch.nn.Module):
-    def __init__(self):
-        super().__init__()
-
-    def forward(self, hidden_states, encoder_hidden_states=None, **kwargs):
-        # Returns a tuple
-        return hidden_states * 2.0, encoder_hidden_states
-
-
-class TupleTransformer(ModelMixin):
-    def __init__(self):
-        super().__init__()
-        self.transformer_blocks = torch.nn.ModuleList([TupleOutputBlock()])
-
-    def forward(self, hidden_states, encoder_hidden_states=None):
-        for block in self.transformer_blocks:
-            # Emulate Flux-like behavior
-            output = block(hidden_states, encoder_hidden_states=encoder_hidden_states)
-            hidden_states = output[0]
-            encoder_hidden_states = output[1]
-        return hidden_states, encoder_hidden_states
-
-
-class MagCacheTests(unittest.TestCase):
-    def setUp(self):
-        # Register standard dummy block
-        TransformerBlockRegistry.register(
-            DummyBlock,
-            TransformerBlockMetadata(return_hidden_states_index=None, return_encoder_hidden_states_index=None),
-        )
-        # Register tuple block (Flux style)
-        TransformerBlockRegistry.register(
-            TupleOutputBlock,
-            TransformerBlockMetadata(return_hidden_states_index=0, return_encoder_hidden_states_index=1),
-        )
-
-    def _set_context(self, model, context_name):
-        """Helper to set context on all hooks in the model."""
-        for module in model.modules():
-            if hasattr(module, "_diffusers_hook"):
-                module._diffusers_hook._set_context(context_name)
-
-    def _get_calibration_data(self, model):
-        for module in model.modules():
-            if hasattr(module, "_diffusers_hook"):
-                hook = module._diffusers_hook.get_hook("mag_cache_block_hook")
-                if hook:
-                    return hook.state_manager.get_state().calibration_ratios
-        return []
-
-    def test_mag_cache_validation(self):
-        """Test that missing mag_ratios raises ValueError."""
-        with self.assertRaises(ValueError):
-            MagCacheConfig(num_inference_steps=10, calibrate=False)
-
-    def test_mag_cache_skipping_logic(self):
-        """
-        Tests that MagCache correctly calculates residuals and skips blocks when conditions are met.
-        """
-        model = DummyTransformer()
-
-        # Dummy ratios: [1.0, 1.0] implies 0 accumulated error if we skip
-        ratios = np.array([1.0, 1.0])
-
-        config = MagCacheConfig(
-            threshold=100.0,
-            num_inference_steps=2,
-            retention_ratio=0.0,  # Enable immediate skipping
-            max_skip_steps=5,
-            mag_ratios=ratios,
-        )
-
-        apply_mag_cache(model, config)
-        self._set_context(model, "test_context")
-
-        # Step 0: Input 10.0 -> Output 40.0 (2 blocks * 2x each)
-        # HeadInput=10. Output=40. Residual=30.
-        input_t0 = torch.tensor([[[10.0]]])
-        output_t0 = model(input_t0)
-        self.assertTrue(torch.allclose(output_t0, torch.tensor([[[40.0]]])), "Step 0 failed")
-
-        # Step 1: Input 11.0.
-        # If Skipped: Output = Input(11) + Residual(30) = 41.0
-        # If Computed: Output = 11 * 4 = 44.0
-        input_t1 = torch.tensor([[[11.0]]])
-        output_t1 = model(input_t1)
-
-        self.assertTrue(
-            torch.allclose(output_t1, torch.tensor([[[41.0]]])), f"Expected Skip (41.0), got {output_t1.item()}"
-        )
-
-    def test_mag_cache_retention(self):
-        """Test that retention_ratio prevents skipping even if error is low."""
-        model = DummyTransformer()
-        # Ratios that imply 0 error, so it *would* skip if retention allowed it
-        ratios = np.array([1.0, 1.0])
-
-        config = MagCacheConfig(
-            threshold=100.0,
-            num_inference_steps=2,
-            retention_ratio=1.0,  # Force retention for ALL steps
-            mag_ratios=ratios,
-        )
-
-        apply_mag_cache(model, config)
-        self._set_context(model, "test_context")
-
-        # Step 0
-        model(torch.tensor([[[10.0]]]))
-
-        # Step 1: Should COMPUTE (44.0) not SKIP (41.0) because of retention
-        input_t1 = torch.tensor([[[11.0]]])
-        output_t1 = model(input_t1)
-
-        self.assertTrue(
-            torch.allclose(output_t1, torch.tensor([[[44.0]]])),
-            f"Expected Compute (44.0) due to retention, got {output_t1.item()}",
-        )
-
-    def test_mag_cache_tuple_outputs(self):
-        """Test compatibility with models returning (hidden, encoder_hidden) like Flux."""
-        model = TupleTransformer()
-        ratios = np.array([1.0, 1.0])
-
-        config = MagCacheConfig(threshold=100.0, num_inference_steps=2, retention_ratio=0.0, mag_ratios=ratios)
-
-        apply_mag_cache(model, config)
-        self._set_context(model, "test_context")
-
-        # Step 0: Compute. Input 10.0 -> Output 20.0 (1 block * 2x)
-        # Residual = 10.0
-        input_t0 = torch.tensor([[[10.0]]])
-        enc_t0 = torch.tensor([[[1.0]]])
-        out_0, _ = model(input_t0, encoder_hidden_states=enc_t0)
-        self.assertTrue(torch.allclose(out_0, torch.tensor([[[20.0]]])))
-
-        # Step 1: Skip. Input 11.0.
-        # Skipped Output = 11 + 10 = 21.0
-        input_t1 = torch.tensor([[[11.0]]])
-        out_1, _ = model(input_t1, encoder_hidden_states=enc_t0)
-
-        self.assertTrue(
-            torch.allclose(out_1, torch.tensor([[[21.0]]])), f"Tuple skip failed. Expected 21.0, got {out_1.item()}"
-        )
-
-    def test_mag_cache_reset(self):
-        """Test that state resets correctly after num_inference_steps."""
-        model = DummyTransformer()
-        config = MagCacheConfig(
-            threshold=100.0, num_inference_steps=2, retention_ratio=0.0, mag_ratios=np.array([1.0, 1.0])
-        )
-        apply_mag_cache(model, config)
-        self._set_context(model, "test_context")
-
-        input_t = torch.ones(1, 1, 1)
-
-        model(input_t)  # Step 0
-        model(input_t)  # Step 1 (Skipped)
-
-        # Step 2 (Reset -> Step 0) -> Should Compute
-        # Input 2.0 -> Output 8.0
-        input_t2 = torch.tensor([[[2.0]]])
-        output_t2 = model(input_t2)
-
-        self.assertTrue(torch.allclose(output_t2, torch.tensor([[[8.0]]])), "State did not reset correctly")
-
-    def test_mag_cache_calibration(self):
-        """Test that calibration mode records ratios."""
-        model = DummyTransformer()
-        config = MagCacheConfig(num_inference_steps=2, calibrate=True)
-        apply_mag_cache(model, config)
-        self._set_context(model, "test_context")
-
-        # Step 0
-        # HeadInput = 10. Output = 40. Residual = 30.
-        # Ratio 0 is placeholder 1.0
-        model(torch.tensor([[[10.0]]]))
-
-        # Check intermediate state
-        ratios = self._get_calibration_data(model)
-        self.assertEqual(len(ratios), 1)
-        self.assertEqual(ratios[0], 1.0)
-
-        # Step 1
-        # HeadInput = 10. Output = 40. Residual = 30.
-        # PrevResidual = 30. CurrResidual = 30.
-        # Ratio = 30/30 = 1.0
-        model(torch.tensor([[[10.0]]]))
-
-        # Verify it computes fully (no skip)
-        # If it skipped, output would be 41.0. It should be 40.0
-        # Actually in test setup, input is same (10.0) so output 40.0.
-        # Let's ensure list is empty after reset (end of step 1)
-        ratios_after = self._get_calibration_data(model)
-        self.assertEqual(ratios_after, [])

tests/models/testing_utils/__init__.py

@@ -5,8 +5,12 @@ from .cache import (
     FasterCacheTesterMixin,
     FirstBlockCacheConfigMixin,
     FirstBlockCacheTesterMixin,
+    MagCacheConfigMixin,
+    MagCacheTesterMixin,
     PyramidAttentionBroadcastConfigMixin,
     PyramidAttentionBroadcastTesterMixin,
+    TaylorSeerCacheConfigMixin,
+    TaylorSeerCacheTesterMixin,
 )
 from .common import BaseModelTesterConfig, ModelTesterMixin
 from .compile import TorchCompileTesterMixin
@@ -50,6 +54,8 @@ __all__ = [
     "FasterCacheTesterMixin",
     "FirstBlockCacheConfigMixin",
     "FirstBlockCacheTesterMixin",
+    "MagCacheConfigMixin",
+    "MagCacheTesterMixin",
     "GGUFCompileTesterMixin",
     "GGUFConfigMixin",
     "GGUFTesterMixin",
@@ -65,6 +71,8 @@ __all__ = [
     "ModelTesterMixin",
     "PyramidAttentionBroadcastConfigMixin",
     "PyramidAttentionBroadcastTesterMixin",
+    "TaylorSeerCacheConfigMixin",
+    "TaylorSeerCacheTesterMixin",
     "QuantizationCompileTesterMixin",
     "QuantizationTesterMixin",
     "QuantoCompileTesterMixin",

tests/models/testing_utils/cache.py

@@ -18,10 +18,18 @@ import gc
 import pytest
 import torch
 
-from diffusers.hooks import FasterCacheConfig, FirstBlockCacheConfig, PyramidAttentionBroadcastConfig
+from diffusers.hooks import (
+    FasterCacheConfig,
+    FirstBlockCacheConfig,
+    MagCacheConfig,
+    PyramidAttentionBroadcastConfig,
+    TaylorSeerCacheConfig,
+)
 from diffusers.hooks.faster_cache import _FASTER_CACHE_BLOCK_HOOK, _FASTER_CACHE_DENOISER_HOOK
 from diffusers.hooks.first_block_cache import _FBC_BLOCK_HOOK, _FBC_LEADER_BLOCK_HOOK
+from diffusers.hooks.mag_cache import _MAG_CACHE_BLOCK_HOOK, _MAG_CACHE_LEADER_BLOCK_HOOK
 from diffusers.hooks.pyramid_attention_broadcast import _PYRAMID_ATTENTION_BROADCAST_HOOK
+from diffusers.hooks.taylorseer_cache import _TAYLORSEER_CACHE_HOOK
 from diffusers.models.cache_utils import CacheMixin
 
 from ...testing_utils import assert_tensors_close, backend_empty_cache, is_cache, torch_device
@@ -554,3 +562,192 @@ class FasterCacheTesterMixin(FasterCacheConfigMixin, CacheTesterMixin):
     @require_cache_mixin
     def test_faster_cache_reset_stateful_cache(self):
         self._test_reset_stateful_cache()
+
+
+@is_cache
+class MagCacheConfigMixin:
+    """
+    Base mixin providing MagCache config.
+
+    Expected class attributes:
+        - model_class: The model class to test (must use CacheMixin)
+    """
+
+    # Default MagCache config - can be overridden by subclasses.
+    # Uses neutral ratios [1.0, 1.0] and a high threshold so the second
+    # inference step is always skipped, which is required by _test_cache_inference.
+    MAG_CACHE_CONFIG = {
+        "num_inference_steps": 2,
+        "retention_ratio": 0.0,
+        "threshold": 100.0,
+        "mag_ratios": [1.0, 1.0],
+    }
+
+    def _get_cache_config(self):
+        return MagCacheConfig(**self.MAG_CACHE_CONFIG)
+
+    def _get_hook_names(self):
+        return [_MAG_CACHE_LEADER_BLOCK_HOOK, _MAG_CACHE_BLOCK_HOOK]
+
+
+@is_cache
+class MagCacheTesterMixin(MagCacheConfigMixin, CacheTesterMixin):
+    """
+    Mixin class for testing MagCache on models.
+
+    Expected class attributes:
+        - model_class: The model class to test (must use CacheMixin)
+
+    Expected methods to be implemented by subclasses:
+        - get_init_dict(): Returns dict of arguments to initialize the model
+        - get_dummy_inputs(): Returns dict of inputs to pass to the model forward pass
+
+    Pytest mark: cache
+        Use `pytest -m "not cache"` to skip these tests
+    """
+
+    @require_cache_mixin
+    def test_mag_cache_enable_disable_state(self):
+        self._test_cache_enable_disable_state()
+
+    @require_cache_mixin
+    def test_mag_cache_double_enable_raises_error(self):
+        self._test_cache_double_enable_raises_error()
+
+    @require_cache_mixin
+    def test_mag_cache_hooks_registered(self):
+        self._test_cache_hooks_registered()
+
+    @require_cache_mixin
+    def test_mag_cache_inference(self):
+        self._test_cache_inference()
+
+    @require_cache_mixin
+    def test_mag_cache_context_manager(self):
+        self._test_cache_context_manager()
+
+    @require_cache_mixin
+    def test_mag_cache_reset_stateful_cache(self):
+        self._test_reset_stateful_cache()
+
+
+@is_cache
+class TaylorSeerCacheConfigMixin:
+    """
+    Base mixin providing TaylorSeerCache config.
+
+    Expected class attributes:
+        - model_class: The model class to test (must use CacheMixin)
+    """
+
+    # Default TaylorSeerCache config - can be overridden by subclasses.
+    # Uses a low cache_interval and disable_cache_before_step=0 so the second
+    # inference step is always predicted, which is required by _test_cache_inference.
+    TAYLORSEER_CACHE_CONFIG = {
+        "cache_interval": 3,
+        "disable_cache_before_step": 1,
+        "max_order": 1,
+    }
+
+    def _get_cache_config(self):
+        return TaylorSeerCacheConfig(**self.TAYLORSEER_CACHE_CONFIG)
+
+    def _get_hook_names(self):
+        return [_TAYLORSEER_CACHE_HOOK]
+
+
+@is_cache
+class TaylorSeerCacheTesterMixin(TaylorSeerCacheConfigMixin, CacheTesterMixin):
+    """
+    Mixin class for testing TaylorSeerCache on models.
+
+    Expected class attributes:
+        - model_class: The model class to test (must use CacheMixin)
+
+    Expected methods to be implemented by subclasses:
+        - get_init_dict(): Returns dict of arguments to initialize the model
+        - get_dummy_inputs(): Returns dict of inputs to pass to the model forward pass
+
+    Pytest mark: cache
+        Use `pytest -m "not cache"` to skip these tests
+    """
+
+    @torch.no_grad()
+    def _test_cache_inference(self):
+        """Test that model can run inference with TaylorSeer cache enabled (requires cache_context)."""
+        init_dict = self.get_init_dict()
+        inputs_dict = self.get_dummy_inputs()
+        model = self.model_class(**init_dict).to(torch_device)
+        model.eval()
+
+        config = self._get_cache_config()
+        model.enable_cache(config)
+
+        # TaylorSeer requires cache_context to be set for inference
+        with model.cache_context("taylorseer_test"):
+            # First pass populates the cache
+            _ = model(**inputs_dict, return_dict=False)[0]
+
+            # Create modified inputs for second pass
+            inputs_dict_step2 = inputs_dict.copy()
+            if self.cache_input_key in inputs_dict_step2:
+                inputs_dict_step2[self.cache_input_key] = inputs_dict_step2[self.cache_input_key] + torch.randn_like(
+                    inputs_dict_step2[self.cache_input_key]
+                )
+
+            # Second pass - TaylorSeer should use cached Taylor series predictions
+            output_with_cache = model(**inputs_dict_step2, return_dict=False)[0]
+
+        assert output_with_cache is not None, "Model output should not be None with cache enabled."
+        assert not torch.isnan(output_with_cache).any(), "Model output contains NaN with cache enabled."
+
+        # Run same inputs without cache to compare
+        model.disable_cache()
+        output_without_cache = model(**inputs_dict_step2, return_dict=False)[0]
+
+        # Cached output should be different from non-cached output (due to approximation)
+        assert not torch.allclose(output_without_cache, output_with_cache, atol=1e-5), (
+            "Cached output should be different from non-cached output due to cache approximation."
+        )
+
+    @torch.no_grad()
+    def _test_reset_stateful_cache(self):
+        """Test that _reset_stateful_cache resets the TaylorSeer cache state (requires cache_context)."""
+        init_dict = self.get_init_dict()
+        inputs_dict = self.get_dummy_inputs()
+        model = self.model_class(**init_dict).to(torch_device)
+        model.eval()
+
+        config = self._get_cache_config()
+        model.enable_cache(config)
+
+        with model.cache_context("taylorseer_test"):
+            _ = model(**inputs_dict, return_dict=False)[0]
+
+        model._reset_stateful_cache()
+
+        model.disable_cache()
+
+    @require_cache_mixin
+    def test_taylorseer_cache_enable_disable_state(self):
+        self._test_cache_enable_disable_state()
+
+    @require_cache_mixin
+    def test_taylorseer_cache_double_enable_raises_error(self):
+        self._test_cache_double_enable_raises_error()
+
+    @require_cache_mixin
+    def test_taylorseer_cache_hooks_registered(self):
+        self._test_cache_hooks_registered()
+
+    @require_cache_mixin
+    def test_taylorseer_cache_inference(self):
+        self._test_cache_inference()
+
+    @require_cache_mixin
+    def test_taylorseer_cache_context_manager(self):
+        self._test_cache_context_manager()
+
+    @require_cache_mixin
+    def test_taylorseer_cache_reset_stateful_cache(self):
+        self._test_reset_stateful_cache()

tests/models/transformers/test_models_transformer_flux.py

@@ -37,6 +37,7 @@ from ..testing_utils import (
     IPAdapterTesterMixin,
     LoraHotSwappingForModelTesterMixin,
     LoraTesterMixin,
+    MagCacheTesterMixin,
     MemoryTesterMixin,
     ModelOptCompileTesterMixin,
     ModelOptTesterMixin,
@@ -45,6 +46,7 @@ from ..testing_utils import (
     QuantoCompileTesterMixin,
     QuantoTesterMixin,
     SingleFileTesterMixin,
+    TaylorSeerCacheTesterMixin,
     TorchAoCompileTesterMixin,
     TorchAoTesterMixin,
     TorchCompileTesterMixin,
@@ -430,3 +432,11 @@ class TestFluxTransformerFasterCache(FluxTransformerTesterConfig, FasterCacheTes
         "tensor_format": "BCHW",
         "is_guidance_distilled": True,
     }
+
+
+class TestFluxTransformerMagCache(FluxTransformerTesterConfig, MagCacheTesterMixin):
+    """MagCache tests for Flux Transformer."""
+
+
+class TestFluxTransformerTaylorSeerCache(FluxTransformerTesterConfig, TaylorSeerCacheTesterMixin):
+    """TaylorSeerCache tests for Flux Transformer."""