utils.py

# coding=utf-8
# Copyright 2024 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 inspect
import os
import re
import tempfile
import unittest
from itertools import product

import numpy as np
import pytest
import torch

from diffusers import (
    AutoencoderKL,
    DDIMScheduler,
    LCMScheduler,
    UNet2DConditionModel,
)
from diffusers.utils import logging
from diffusers.utils.import_utils import is_peft_available
from diffusers.utils.testing_utils import (
    CaptureLogger,
    floats_tensor,
    is_torch_version,
    require_peft_backend,
    require_peft_version_greater,
    require_transformers_version_greater,
    skip_mps,
    torch_device,
)


if is_peft_available():
    from peft import LoraConfig, inject_adapter_in_model, set_peft_model_state_dict
    from peft.tuners.tuners_utils import BaseTunerLayer
    from peft.utils import get_peft_model_state_dict


def state_dicts_almost_equal(sd1, sd2):
    sd1 = dict(sorted(sd1.items()))
    sd2 = dict(sorted(sd2.items()))

    models_are_equal = True
    for ten1, ten2 in zip(sd1.values(), sd2.values()):
        if (ten1 - ten2).abs().max() > 1e-3:
            models_are_equal = False

    return models_are_equal


def check_if_lora_correctly_set(model) -> bool:
    """
    Checks if the LoRA layers are correctly set with peft
    """
    for module in model.modules():
        if isinstance(module, BaseTunerLayer):
            return True
    return False


def initialize_dummy_state_dict(state_dict):
    if not all(v.device.type == "meta" for _, v in state_dict.items()):
        raise ValueError("`state_dict` has non-meta values.")
    return {k: torch.randn(v.shape, device=torch_device, dtype=v.dtype) for k, v in state_dict.items()}


POSSIBLE_ATTENTION_KWARGS_NAMES = ["cross_attention_kwargs", "joint_attention_kwargs", "attention_kwargs"]


@require_peft_backend
class PeftLoraLoaderMixinTests:
    pipeline_class = None

    scheduler_cls = None
    scheduler_kwargs = None
    scheduler_classes = [DDIMScheduler, LCMScheduler]

    has_two_text_encoders = False
    has_three_text_encoders = False
    text_encoder_cls, text_encoder_id, text_encoder_subfolder = None, None, ""
    text_encoder_2_cls, text_encoder_2_id, text_encoder_2_subfolder = None, None, ""
    text_encoder_3_cls, text_encoder_3_id, text_encoder_3_subfolder = None, None, ""
    tokenizer_cls, tokenizer_id, tokenizer_subfolder = None, None, ""
    tokenizer_2_cls, tokenizer_2_id, tokenizer_2_subfolder = None, None, ""
    tokenizer_3_cls, tokenizer_3_id, tokenizer_3_subfolder = None, None, ""

    unet_kwargs = None
    transformer_cls = None
    transformer_kwargs = None
    vae_cls = AutoencoderKL
    vae_kwargs = None

    text_encoder_target_modules = ["q_proj", "k_proj", "v_proj", "out_proj"]
    denoiser_target_modules = ["to_q", "to_k", "to_v", "to_out.0"]

    def get_dummy_components(self, scheduler_cls=None, use_dora=False):
        if self.unet_kwargs and self.transformer_kwargs:
            raise ValueError("Both `unet_kwargs` and `transformer_kwargs` cannot be specified.")
        if self.has_two_text_encoders and self.has_three_text_encoders:
            raise ValueError("Both `has_two_text_encoders` and `has_three_text_encoders` cannot be True.")

        scheduler_cls = self.scheduler_cls if scheduler_cls is None else scheduler_cls
        rank = 4

        torch.manual_seed(0)
        if self.unet_kwargs is not None:
            unet = UNet2DConditionModel(**self.unet_kwargs)
        else:
            transformer = self.transformer_cls(**self.transformer_kwargs)

        scheduler = scheduler_cls(**self.scheduler_kwargs)

        torch.manual_seed(0)
        vae = self.vae_cls(**self.vae_kwargs)

        text_encoder = self.text_encoder_cls.from_pretrained(
            self.text_encoder_id, subfolder=self.text_encoder_subfolder
        )
        tokenizer = self.tokenizer_cls.from_pretrained(self.tokenizer_id, subfolder=self.tokenizer_subfolder)

        if self.text_encoder_2_cls is not None:
            text_encoder_2 = self.text_encoder_2_cls.from_pretrained(
                self.text_encoder_2_id, subfolder=self.text_encoder_2_subfolder
            )
            tokenizer_2 = self.tokenizer_2_cls.from_pretrained(
                self.tokenizer_2_id, subfolder=self.tokenizer_2_subfolder
            )

        if self.text_encoder_3_cls is not None:
            text_encoder_3 = self.text_encoder_3_cls.from_pretrained(
                self.text_encoder_3_id, subfolder=self.text_encoder_3_subfolder
            )
            tokenizer_3 = self.tokenizer_3_cls.from_pretrained(
                self.tokenizer_3_id, subfolder=self.tokenizer_3_subfolder
            )

        text_lora_config = LoraConfig(
            r=rank,
            lora_alpha=rank,
            target_modules=self.text_encoder_target_modules,
            init_lora_weights=False,
            use_dora=use_dora,
        )

        denoiser_lora_config = LoraConfig(
            r=rank,
            lora_alpha=rank,
            target_modules=self.denoiser_target_modules,
            init_lora_weights=False,
            use_dora=use_dora,
        )

        pipeline_components = {
            "scheduler": scheduler,
            "vae": vae,
            "text_encoder": text_encoder,
            "tokenizer": tokenizer,
        }
        # Denoiser
        if self.unet_kwargs is not None:
            pipeline_components.update({"unet": unet})
        elif self.transformer_kwargs is not None:
            pipeline_components.update({"transformer": transformer})

        # Remaining text encoders.
        if self.text_encoder_2_cls is not None:
            pipeline_components.update({"tokenizer_2": tokenizer_2, "text_encoder_2": text_encoder_2})
        if self.text_encoder_3_cls is not None:
            pipeline_components.update({"tokenizer_3": tokenizer_3, "text_encoder_3": text_encoder_3})

        # Remaining stuff
        init_params = inspect.signature(self.pipeline_class.__init__).parameters
        if "safety_checker" in init_params:
            pipeline_components.update({"safety_checker": None})
        if "feature_extractor" in init_params:
            pipeline_components.update({"feature_extractor": None})
        if "image_encoder" in init_params:
            pipeline_components.update({"image_encoder": None})

        return pipeline_components, text_lora_config, denoiser_lora_config

    @property
    def output_shape(self):
        raise NotImplementedError

    def get_dummy_inputs(self, with_generator=True):
        batch_size = 1
        sequence_length = 10
        num_channels = 4
        sizes = (32, 32)

        generator = torch.manual_seed(0)
        noise = floats_tensor((batch_size, num_channels) + sizes)
        input_ids = torch.randint(1, sequence_length, size=(batch_size, sequence_length), generator=generator)

        pipeline_inputs = {
            "prompt": "A painting of a squirrel eating a burger",
            "num_inference_steps": 5,
            "guidance_scale": 6.0,
            "output_type": "np",
        }
        if with_generator:
            pipeline_inputs.update({"generator": generator})

        return noise, input_ids, pipeline_inputs

    # Copied from: https://colab.research.google.com/gist/sayakpaul/df2ef6e1ae6d8c10a49d859883b10860/scratchpad.ipynb
    def get_dummy_tokens(self):
        max_seq_length = 77

        inputs = torch.randint(2, 56, size=(1, max_seq_length), generator=torch.manual_seed(0))

        prepared_inputs = {}
        prepared_inputs["input_ids"] = inputs
        return prepared_inputs

    def _get_lora_state_dicts(self, modules_to_save):
        state_dicts = {}
        for module_name, module in modules_to_save.items():
            if module is not None:
                state_dicts[f"{module_name}_lora_layers"] = get_peft_model_state_dict(module)
        return state_dicts

    def _get_modules_to_save(self, pipe, has_denoiser=False):
        modules_to_save = {}
        lora_loadable_modules = self.pipeline_class._lora_loadable_modules

        if (
            "text_encoder" in lora_loadable_modules
            and hasattr(pipe, "text_encoder")
            and getattr(pipe.text_encoder, "peft_config", None) is not None
        ):
            modules_to_save["text_encoder"] = pipe.text_encoder

        if (
            "text_encoder_2" in lora_loadable_modules
            and hasattr(pipe, "text_encoder_2")
            and getattr(pipe.text_encoder_2, "peft_config", None) is not None
        ):
            modules_to_save["text_encoder_2"] = pipe.text_encoder_2

        if has_denoiser:
            if "unet" in lora_loadable_modules and hasattr(pipe, "unet"):
                modules_to_save["unet"] = pipe.unet

            if "transformer" in lora_loadable_modules and hasattr(pipe, "transformer"):
                modules_to_save["transformer"] = pipe.transformer

        return modules_to_save

    def check_if_adapters_added_correctly(
        self, pipe, text_lora_config=None, denoiser_lora_config=None, adapter_name="default"
    ):
        if text_lora_config is not None:
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, adapter_name=adapter_name)
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

        if denoiser_lora_config is not None:
            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, adapter_name=adapter_name)
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")
        else:
            denoiser = None

        if text_lora_config is not None and self.has_two_text_encoders or self.has_three_text_encoders:
            if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder_2.add_adapter(text_lora_config, adapter_name=adapter_name)
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                )
        return pipe, denoiser

    def test_simple_inference(self):
        """
        Tests a simple inference and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)

            _, _, inputs = self.get_dummy_inputs()
            output_no_lora = pipe(**inputs)[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

    def test_simple_inference_with_text_lora(self):
        """
        Tests a simple inference with lora attached on the text encoder
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)

            output_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
            )

    @require_peft_version_greater("0.13.1")
    def test_low_cpu_mem_usage_with_injection(self):
        """Tests if we can inject LoRA state dict with low_cpu_mem_usage."""
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                inject_adapter_in_model(text_lora_config, pipe.text_encoder, low_cpu_mem_usage=True)
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder."
                )
                self.assertTrue(
                    "meta" in {p.device.type for p in pipe.text_encoder.parameters()},
                    "The LoRA params should be on 'meta' device.",
                )

                te_state_dict = initialize_dummy_state_dict(get_peft_model_state_dict(pipe.text_encoder))
                set_peft_model_state_dict(pipe.text_encoder, te_state_dict, low_cpu_mem_usage=True)
                self.assertTrue(
                    "meta" not in {p.device.type for p in pipe.text_encoder.parameters()},
                    "No param should be on 'meta' device.",
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            inject_adapter_in_model(denoiser_lora_config, denoiser, low_cpu_mem_usage=True)
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")
            self.assertTrue(
                "meta" in {p.device.type for p in denoiser.parameters()}, "The LoRA params should be on 'meta' device."
            )

            denoiser_state_dict = initialize_dummy_state_dict(get_peft_model_state_dict(denoiser))
            set_peft_model_state_dict(denoiser, denoiser_state_dict, low_cpu_mem_usage=True)
            self.assertTrue(
                "meta" not in {p.device.type for p in denoiser.parameters()}, "No param should be on 'meta' device."
            )

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    inject_adapter_in_model(text_lora_config, pipe.text_encoder_2, low_cpu_mem_usage=True)
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )
                    self.assertTrue(
                        "meta" in {p.device.type for p in pipe.text_encoder_2.parameters()},
                        "The LoRA params should be on 'meta' device.",
                    )

                    te2_state_dict = initialize_dummy_state_dict(get_peft_model_state_dict(pipe.text_encoder_2))
                    set_peft_model_state_dict(pipe.text_encoder_2, te2_state_dict, low_cpu_mem_usage=True)
                    self.assertTrue(
                        "meta" not in {p.device.type for p in pipe.text_encoder_2.parameters()},
                        "No param should be on 'meta' device.",
                    )

            _, _, inputs = self.get_dummy_inputs()
            output_lora = pipe(**inputs)[0]
            self.assertTrue(output_lora.shape == self.output_shape)

    @require_peft_version_greater("0.13.1")
    @require_transformers_version_greater("4.45.2")
    def test_low_cpu_mem_usage_with_loading(self):
        """Tests if we can load LoRA state dict with low_cpu_mem_usage."""

        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            images_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            with tempfile.TemporaryDirectory() as tmpdirname:
                modules_to_save = self._get_modules_to_save(pipe, has_denoiser=True)
                lora_state_dicts = self._get_lora_state_dicts(modules_to_save)
                self.pipeline_class.save_lora_weights(
                    save_directory=tmpdirname, safe_serialization=False, **lora_state_dicts
                )

                self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
                pipe.unload_lora_weights()
                pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.bin"), low_cpu_mem_usage=False)

                for module_name, module in modules_to_save.items():
                    self.assertTrue(check_if_lora_correctly_set(module), f"Lora not correctly set in {module_name}")

                images_lora_from_pretrained = pipe(**inputs, generator=torch.manual_seed(0))[0]
                self.assertTrue(
                    np.allclose(images_lora, images_lora_from_pretrained, atol=1e-3, rtol=1e-3),
                    "Loading from saved checkpoints should give same results.",
                )

                # Now, check for `low_cpu_mem_usage.`
                pipe.unload_lora_weights()
                pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.bin"), low_cpu_mem_usage=True)

                for module_name, module in modules_to_save.items():
                    self.assertTrue(check_if_lora_correctly_set(module), f"Lora not correctly set in {module_name}")

                images_lora_from_pretrained_low_cpu = pipe(**inputs, generator=torch.manual_seed(0))[0]
                self.assertTrue(
                    np.allclose(
                        images_lora_from_pretrained_low_cpu, images_lora_from_pretrained, atol=1e-3, rtol=1e-3
                    ),
                    "Loading from saved checkpoints with `low_cpu_mem_usage` should give same results.",
                )

    def test_simple_inference_with_text_lora_and_scale(self):
        """
        Tests a simple inference with lora attached on the text encoder + scale argument
        and makes sure it works as expected
        """
        call_signature_keys = inspect.signature(self.pipeline_class.__call__).parameters.keys()

        # TODO(diffusers): Discuss a common naming convention across library for 1.0.0 release
        for possible_attention_kwargs in POSSIBLE_ATTENTION_KWARGS_NAMES:
            if possible_attention_kwargs in call_signature_keys:
                attention_kwargs_name = possible_attention_kwargs
                break
        assert attention_kwargs_name is not None

        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)

            output_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
            )

            attention_kwargs = {attention_kwargs_name: {"scale": 0.5}}
            output_lora_scale = pipe(**inputs, generator=torch.manual_seed(0), **attention_kwargs)[0]

            self.assertTrue(
                not np.allclose(output_lora, output_lora_scale, atol=1e-3, rtol=1e-3),
                "Lora + scale should change the output",
            )

            attention_kwargs = {attention_kwargs_name: {"scale": 0.0}}
            output_lora_0_scale = pipe(**inputs, generator=torch.manual_seed(0), **attention_kwargs)[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_lora_0_scale, atol=1e-3, rtol=1e-3),
                "Lora + 0 scale should lead to same result as no LoRA",
            )

    def test_simple_inference_with_text_lora_fused(self):
        """
        Tests a simple inference with lora attached into text encoder + fuses the lora weights into base model
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)

            pipe.fuse_lora()
            # Fusing should still keep the LoRA layers
            self.assertTrue(check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            ouput_fused = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertFalse(
                np.allclose(ouput_fused, output_no_lora, atol=1e-3, rtol=1e-3), "Fused lora should change the output"
            )

    def test_simple_inference_with_text_lora_unloaded(self):
        """
        Tests a simple inference with lora attached to text encoder, then unloads the lora weights
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)

            pipe.unload_lora_weights()
            # unloading should remove the LoRA layers
            self.assertFalse(
                check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly unloaded in text encoder"
            )

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    self.assertFalse(
                        check_if_lora_correctly_set(pipe.text_encoder_2),
                        "Lora not correctly unloaded in text encoder 2",
                    )

            ouput_unloaded = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                np.allclose(ouput_unloaded, output_no_lora, atol=1e-3, rtol=1e-3),
                "Fused lora should change the output",
            )

    def test_simple_inference_with_text_lora_save_load(self):
        """
        Tests a simple usecase where users could use saving utilities for LoRA.
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)

            images_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            with tempfile.TemporaryDirectory() as tmpdirname:
                modules_to_save = self._get_modules_to_save(pipe)
                lora_state_dicts = self._get_lora_state_dicts(modules_to_save)

                self.pipeline_class.save_lora_weights(
                    save_directory=tmpdirname, safe_serialization=False, **lora_state_dicts
                )

                self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
                pipe.unload_lora_weights()
                pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.bin"))

            for module_name, module in modules_to_save.items():
                self.assertTrue(check_if_lora_correctly_set(module), f"Lora not correctly set in {module_name}")

            images_lora_from_pretrained = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(images_lora, images_lora_from_pretrained, atol=1e-3, rtol=1e-3),
                "Loading from saved checkpoints should give same results.",
            )

    def test_simple_inference_with_partial_text_lora(self):
        """
        Tests a simple inference with lora attached on the text encoder
        with different ranks and some adapters removed
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, _, _ = self.get_dummy_components(scheduler_cls)
            # Verify `StableDiffusionLoraLoaderMixin.load_lora_into_text_encoder` handles different ranks per module (PR#8324).
            text_lora_config = LoraConfig(
                r=4,
                rank_pattern={self.text_encoder_target_modules[i]: i + 1 for i in range(3)},
                lora_alpha=4,
                target_modules=self.text_encoder_target_modules,
                init_lora_weights=False,
                use_dora=False,
            )
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)

            state_dict = {}
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                # Gather the state dict for the PEFT model, excluding `layers.4`, to ensure `load_lora_into_text_encoder`
                # supports missing layers (PR#8324).
                state_dict = {
                    f"text_encoder.{module_name}": param
                    for module_name, param in get_peft_model_state_dict(pipe.text_encoder).items()
                    if "text_model.encoder.layers.4" not in module_name
                }

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    state_dict.update(
                        {
                            f"text_encoder_2.{module_name}": param
                            for module_name, param in get_peft_model_state_dict(pipe.text_encoder_2).items()
                            if "text_model.encoder.layers.4" not in module_name
                        }
                    )

            output_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
            )

            # Unload lora and load it back using the pipe.load_lora_weights machinery
            pipe.unload_lora_weights()
            pipe.load_lora_weights(state_dict)

            output_partial_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                not np.allclose(output_partial_lora, output_lora, atol=1e-3, rtol=1e-3),
                "Removing adapters should change the output",
            )

    def test_simple_inference_save_pretrained_with_text_lora(self):
        """
        Tests a simple usecase where users could use saving utilities for LoRA through save_pretrained
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config=None)
            images_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            with tempfile.TemporaryDirectory() as tmpdirname:
                pipe.save_pretrained(tmpdirname)

                pipe_from_pretrained = self.pipeline_class.from_pretrained(tmpdirname)
                pipe_from_pretrained.to(torch_device)

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                self.assertTrue(
                    check_if_lora_correctly_set(pipe_from_pretrained.text_encoder),
                    "Lora not correctly set in text encoder",
                )

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe_from_pretrained.text_encoder_2),
                        "Lora not correctly set in text encoder 2",
                    )

            images_lora_save_pretrained = pipe_from_pretrained(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(images_lora, images_lora_save_pretrained, atol=1e-3, rtol=1e-3),
                "Loading from saved checkpoints should give same results.",
            )

    def test_simple_inference_with_text_denoiser_lora_save_load(self):
        """
        Tests a simple usecase where users could use saving utilities for LoRA for Unet + text encoder
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            images_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            with tempfile.TemporaryDirectory() as tmpdirname:
                modules_to_save = self._get_modules_to_save(pipe, has_denoiser=True)
                lora_state_dicts = self._get_lora_state_dicts(modules_to_save)
                self.pipeline_class.save_lora_weights(
                    save_directory=tmpdirname, safe_serialization=False, **lora_state_dicts
                )

                self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
                pipe.unload_lora_weights()
                pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.bin"))

            for module_name, module in modules_to_save.items():
                self.assertTrue(check_if_lora_correctly_set(module), f"Lora not correctly set in {module_name}")

            images_lora_from_pretrained = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                np.allclose(images_lora, images_lora_from_pretrained, atol=1e-3, rtol=1e-3),
                "Loading from saved checkpoints should give same results.",
            )

    def test_simple_inference_with_text_denoiser_lora_and_scale(self):
        """
        Tests a simple inference with lora attached on the text encoder + Unet + scale argument
        and makes sure it works as expected
        """
        call_signature_keys = inspect.signature(self.pipeline_class.__call__).parameters.keys()
        for possible_attention_kwargs in POSSIBLE_ATTENTION_KWARGS_NAMES:
            if possible_attention_kwargs in call_signature_keys:
                attention_kwargs_name = possible_attention_kwargs
                break
        assert attention_kwargs_name is not None

        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            output_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
            )

            attention_kwargs = {attention_kwargs_name: {"scale": 0.5}}
            output_lora_scale = pipe(**inputs, generator=torch.manual_seed(0), **attention_kwargs)[0]

            self.assertTrue(
                not np.allclose(output_lora, output_lora_scale, atol=1e-3, rtol=1e-3),
                "Lora + scale should change the output",
            )

            attention_kwargs = {attention_kwargs_name: {"scale": 0.0}}
            output_lora_0_scale = pipe(**inputs, generator=torch.manual_seed(0), **attention_kwargs)[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_lora_0_scale, atol=1e-3, rtol=1e-3),
                "Lora + 0 scale should lead to same result as no LoRA",
            )

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                self.assertTrue(
                    pipe.text_encoder.text_model.encoder.layers[0].self_attn.q_proj.scaling["default"] == 1.0,
                    "The scaling parameter has not been correctly restored!",
                )

    def test_simple_inference_with_text_lora_denoiser_fused(self):
        """
        Tests a simple inference with lora attached into text encoder + fuses the lora weights into base model
        and makes sure it works as expected - with unet
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, denoiser = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            pipe.fuse_lora(components=self.pipeline_class._lora_loadable_modules)

            # Fusing should still keep the LoRA layers
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            output_fused = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertFalse(
                np.allclose(output_fused, output_no_lora, atol=1e-3, rtol=1e-3), "Fused lora should change the output"
            )

    def test_simple_inference_with_text_denoiser_lora_unloaded(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, then unloads the lora weights
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, denoiser = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            pipe.unload_lora_weights()
            # unloading should remove the LoRA layers
            self.assertFalse(
                check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly unloaded in text encoder"
            )
            self.assertFalse(check_if_lora_correctly_set(denoiser), "Lora not correctly unloaded in denoiser")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    self.assertFalse(
                        check_if_lora_correctly_set(pipe.text_encoder_2),
                        "Lora not correctly unloaded in text encoder 2",
                    )

            output_unloaded = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                np.allclose(output_unloaded, output_no_lora, atol=1e-3, rtol=1e-3),
                "Fused lora should change the output",
            )

    def test_simple_inference_with_text_denoiser_lora_unfused(
        self, expected_atol: float = 1e-3, expected_rtol: float = 1e-3
    ):
        """
        Tests a simple inference with lora attached to text encoder and unet, then unloads the lora weights
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            pipe, denoiser = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            pipe.fuse_lora(components=self.pipeline_class._lora_loadable_modules)
            output_fused_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.unfuse_lora(components=self.pipeline_class._lora_loadable_modules)
            output_unfused_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            # unloading should remove the LoRA layers
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                self.assertTrue(check_if_lora_correctly_set(pipe.text_encoder), "Unfuse should still keep LoRA layers")

            self.assertTrue(check_if_lora_correctly_set(denoiser), "Unfuse should still keep LoRA layers")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Unfuse should still keep LoRA layers"
                    )

            # Fuse and unfuse should lead to the same results
            self.assertTrue(
                np.allclose(output_fused_lora, output_unfused_lora, atol=expected_atol, rtol=expected_rtol),
                "Fused lora should not change the output",
            )

    def test_simple_inference_with_text_denoiser_multi_adapter(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, attaches
        multiple adapters and set them
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")
            denoiser.add_adapter(denoiser_lora_config, "adapter-2")
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            pipe.set_adapters("adapter-1")
            output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertFalse(
                np.allclose(output_no_lora, output_adapter_1, atol=1e-3, rtol=1e-3),
                "Adapter outputs should be different.",
            )

            pipe.set_adapters("adapter-2")
            output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertFalse(
                np.allclose(output_no_lora, output_adapter_2, atol=1e-3, rtol=1e-3),
                "Adapter outputs should be different.",
            )

            pipe.set_adapters(["adapter-1", "adapter-2"])
            output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertFalse(
                np.allclose(output_no_lora, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter outputs should be different.",
            )

            # Fuse and unfuse should lead to the same results
            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
                "Adapter 1 and 2 should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 1 and mixed adapters should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 2 and mixed adapters should give different results",
            )

            pipe.disable_lora()
            output_disabled = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_disabled, atol=1e-3, rtol=1e-3),
                "output with no lora and output with lora disabled should give same results",
            )

    def test_wrong_adapter_name_raises_error(self):
        adapter_name = "adapter-1"

        scheduler_cls = self.scheduler_classes[0]
        components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)
        _, _, inputs = self.get_dummy_inputs(with_generator=False)

        pipe, _ = self.check_if_adapters_added_correctly(
            pipe, text_lora_config, denoiser_lora_config, adapter_name=adapter_name
        )

        with self.assertRaises(ValueError) as err_context:
            pipe.set_adapters("test")

        self.assertTrue("not in the list of present adapters" in str(err_context.exception))

        # test this works.
        pipe.set_adapters(adapter_name)
        _ = pipe(**inputs, generator=torch.manual_seed(0))[0]

    def test_multiple_wrong_adapter_name_raises_error(self):
        adapter_name = "adapter-1"
        scheduler_cls = self.scheduler_classes[0]
        components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)
        _, _, inputs = self.get_dummy_inputs(with_generator=False)

        pipe, _ = self.check_if_adapters_added_correctly(
            pipe, text_lora_config, denoiser_lora_config, adapter_name=adapter_name
        )

        scale_with_wrong_components = {"foo": 0.0, "bar": 0.0, "tik": 0.0}
        logger = logging.get_logger("diffusers.loaders.lora_base")
        logger.setLevel(30)
        with CaptureLogger(logger) as cap_logger:
            pipe.set_adapters(adapter_name, adapter_weights=scale_with_wrong_components)

        wrong_components = sorted(set(scale_with_wrong_components.keys()))
        msg = f"The following components in `adapter_weights` are not part of the pipeline: {wrong_components}. "
        self.assertTrue(msg in str(cap_logger.out))

        # test this works.
        pipe.set_adapters(adapter_name)
        _ = pipe(**inputs, generator=torch.manual_seed(0))[0]

    def test_simple_inference_with_text_denoiser_block_scale(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, attaches
        one adapter and set different weights for different blocks (i.e. block lora)
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
            self.assertTrue(check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder")

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config)
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            weights_1 = {"text_encoder": 2, "unet": {"down": 5}}
            pipe.set_adapters("adapter-1", weights_1)
            output_weights_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            weights_2 = {"unet": {"up": 5}}
            pipe.set_adapters("adapter-1", weights_2)
            output_weights_2 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertFalse(
                np.allclose(output_weights_1, output_weights_2, atol=1e-3, rtol=1e-3),
                "LoRA weights 1 and 2 should give different results",
            )
            self.assertFalse(
                np.allclose(output_no_lora, output_weights_1, atol=1e-3, rtol=1e-3),
                "No adapter and LoRA weights 1 should give different results",
            )
            self.assertFalse(
                np.allclose(output_no_lora, output_weights_2, atol=1e-3, rtol=1e-3),
                "No adapter and LoRA weights 2 should give different results",
            )

            pipe.disable_lora()
            output_disabled = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_disabled, atol=1e-3, rtol=1e-3),
                "output with no lora and output with lora disabled should give same results",
            )

    def test_simple_inference_with_text_denoiser_multi_adapter_block_lora(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, attaches
        multiple adapters and set differnt weights for different blocks (i.e. block lora)
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")
            denoiser.add_adapter(denoiser_lora_config, "adapter-2")
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                if "text_encoder_2" in self.pipeline_class._lora_loadable_modules:
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            scales_1 = {"text_encoder": 2, "unet": {"down": 5}}
            scales_2 = {"unet": {"down": 5, "mid": 5}}

            pipe.set_adapters("adapter-1", scales_1)
            output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters("adapter-2", scales_2)
            output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters(["adapter-1", "adapter-2"], [scales_1, scales_2])
            output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0))[0]

            # Fuse and unfuse should lead to the same results
            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
                "Adapter 1 and 2 should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 1 and mixed adapters should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 2 and mixed adapters should give different results",
            )

            pipe.disable_lora()
            output_disabled = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_disabled, atol=1e-3, rtol=1e-3),
                "output with no lora and output with lora disabled should give same results",
            )

            # a mismatching number of adapter_names and adapter_weights should raise an error
            with self.assertRaises(ValueError):
                pipe.set_adapters(["adapter-1", "adapter-2"], [scales_1])

    def test_simple_inference_with_text_denoiser_block_scale_for_all_dict_options(self):
        """Tests that any valid combination of lora block scales can be used in pipe.set_adapter"""

        def updown_options(blocks_with_tf, layers_per_block, value):
            """
            Generate every possible combination for how a lora weight dict for the up/down part can be.
            E.g. 2, {"block_1": 2}, {"block_1": [2,2,2]}, {"block_1": 2, "block_2": [2,2,2]}, ...
            """
            num_val = value
            list_val = [value] * layers_per_block

            node_opts = [None, num_val, list_val]
            node_opts_foreach_block = [node_opts] * len(blocks_with_tf)

            updown_opts = [num_val]
            for nodes in product(*node_opts_foreach_block):
                if all(n is None for n in nodes):
                    continue
                opt = {}
                for b, n in zip(blocks_with_tf, nodes):
                    if n is not None:
                        opt["block_" + str(b)] = n
                updown_opts.append(opt)
            return updown_opts

        def all_possible_dict_opts(unet, value):
            """
            Generate every possible combination for how a lora weight dict can be.
            E.g. 2, {"unet: {"down": 2}}, {"unet: {"down": [2,2,2]}}, {"unet: {"mid": 2, "up": [2,2,2]}}, ...
            """

            down_blocks_with_tf = [i for i, d in enumerate(unet.down_blocks) if hasattr(d, "attentions")]
            up_blocks_with_tf = [i for i, u in enumerate(unet.up_blocks) if hasattr(u, "attentions")]

            layers_per_block = unet.config.layers_per_block

            text_encoder_opts = [None, value]
            text_encoder_2_opts = [None, value]
            mid_opts = [None, value]
            down_opts = [None] + updown_options(down_blocks_with_tf, layers_per_block, value)
            up_opts = [None] + updown_options(up_blocks_with_tf, layers_per_block + 1, value)

            opts = []

            for t1, t2, d, m, u in product(text_encoder_opts, text_encoder_2_opts, down_opts, mid_opts, up_opts):
                if all(o is None for o in (t1, t2, d, m, u)):
                    continue
                opt = {}
                if t1 is not None:
                    opt["text_encoder"] = t1
                if t2 is not None:
                    opt["text_encoder_2"] = t2
                if all(o is None for o in (d, m, u)):
                    # no unet scaling
                    continue
                opt["unet"] = {}
                if d is not None:
                    opt["unet"]["down"] = d
                if m is not None:
                    opt["unet"]["mid"] = m
                if u is not None:
                    opt["unet"]["up"] = u
                opts.append(opt)

            return opts

        components, text_lora_config, denoiser_lora_config = self.get_dummy_components(self.scheduler_cls)
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)
        _, _, inputs = self.get_dummy_inputs(with_generator=False)

        pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")

        denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
        denoiser.add_adapter(denoiser_lora_config, "adapter-1")

        if self.has_two_text_encoders or self.has_three_text_encoders:
            lora_loadable_components = self.pipeline_class._lora_loadable_modules
            if "text_encoder_2" in lora_loadable_components:
                pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")

        for scale_dict in all_possible_dict_opts(pipe.unet, value=1234):
            # test if lora block scales can be set with this scale_dict
            if not self.has_two_text_encoders and "text_encoder_2" in scale_dict:
                del scale_dict["text_encoder_2"]

            pipe.set_adapters("adapter-1", scale_dict)  # test will fail if this line throws an error

    def test_simple_inference_with_text_denoiser_multi_adapter_delete_adapter(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, attaches
        multiple adapters and set/delete them
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")
            denoiser.add_adapter(denoiser_lora_config, "adapter-2")
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                lora_loadable_components = self.pipeline_class._lora_loadable_modules
                if "text_encoder_2" in lora_loadable_components:
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            pipe.set_adapters("adapter-1")
            output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters("adapter-2")
            output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters(["adapter-1", "adapter-2"])
            output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
                "Adapter 1 and 2 should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 1 and mixed adapters should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 2 and mixed adapters should give different results",
            )

            pipe.delete_adapters("adapter-1")
            output_deleted_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_deleted_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
                "Adapter 1 and 2 should give different results",
            )

            pipe.delete_adapters("adapter-2")
            output_deleted_adapters = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_deleted_adapters, atol=1e-3, rtol=1e-3),
                "output with no lora and output with lora disabled should give same results",
            )

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")
            denoiser.add_adapter(denoiser_lora_config, "adapter-2")
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            pipe.set_adapters(["adapter-1", "adapter-2"])
            pipe.delete_adapters(["adapter-1", "adapter-2"])

            output_deleted_adapters = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_deleted_adapters, atol=1e-3, rtol=1e-3),
                "output with no lora and output with lora disabled should give same results",
            )

    def test_simple_inference_with_text_denoiser_multi_adapter_weighted(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, attaches
        multiple adapters and set them
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")
            denoiser.add_adapter(denoiser_lora_config, "adapter-2")
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                lora_loadable_components = self.pipeline_class._lora_loadable_modules
                if "text_encoder_2" in lora_loadable_components:
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            pipe.set_adapters("adapter-1")
            output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters("adapter-2")
            output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters(["adapter-1", "adapter-2"])
            output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0))[0]

            # Fuse and unfuse should lead to the same results
            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
                "Adapter 1 and 2 should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 1 and mixed adapters should give different results",
            )

            self.assertFalse(
                np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Adapter 2 and mixed adapters should give different results",
            )

            pipe.set_adapters(["adapter-1", "adapter-2"], [0.5, 0.6])
            output_adapter_mixed_weighted = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertFalse(
                np.allclose(output_adapter_mixed_weighted, output_adapter_mixed, atol=1e-3, rtol=1e-3),
                "Weighted adapter and mixed adapter should give different results",
            )

            pipe.disable_lora()
            output_disabled = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(output_no_lora, output_disabled, atol=1e-3, rtol=1e-3),
                "output with no lora and output with lora disabled should give same results",
            )

    @skip_mps
    @pytest.mark.xfail(
        condition=torch.device(torch_device).type == "cpu" and is_torch_version(">=", "2.5"),
        reason="Test currently fails on CPU and PyTorch 2.5.1 but not on PyTorch 2.4.1.",
        strict=False,
    )
    def test_lora_fuse_nan(self):
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")
            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            # corrupt one LoRA weight with `inf` values
            with torch.no_grad():
                if self.unet_kwargs:
                    pipe.unet.mid_block.attentions[0].transformer_blocks[0].attn1.to_q.lora_A[
                        "adapter-1"
                    ].weight += float("inf")
                else:
                    named_modules = [name for name, _ in pipe.transformer.named_modules()]
                    possible_tower_names = [
                        "transformer_blocks",
                        "blocks",
                        "joint_transformer_blocks",
                        "single_transformer_blocks",
                    ]
                    filtered_tower_names = [
                        tower_name for tower_name in possible_tower_names if hasattr(pipe.transformer, tower_name)
                    ]
                    if len(filtered_tower_names) == 0:
                        reason = (
                            f"`pipe.transformer` didn't have any of the following attributes: {possible_tower_names}."
                        )
                        raise ValueError(reason)
                    for tower_name in filtered_tower_names:
                        transformer_tower = getattr(pipe.transformer, tower_name)
                        has_attn1 = any("attn1" in name for name in named_modules)
                        if has_attn1:
                            transformer_tower[0].attn1.to_q.lora_A["adapter-1"].weight += float("inf")
                        else:
                            transformer_tower[0].attn.to_q.lora_A["adapter-1"].weight += float("inf")

            # with `safe_fusing=True` we should see an Error
            with self.assertRaises(ValueError):
                pipe.fuse_lora(components=self.pipeline_class._lora_loadable_modules, safe_fusing=True)

            # without we should not see an error, but every image will be black
            pipe.fuse_lora(components=self.pipeline_class._lora_loadable_modules, safe_fusing=False)
            out = pipe(**inputs)[0]

            self.assertTrue(np.isnan(out).all())

    def test_get_adapters(self):
        """
        Tests a simple usecase where we attach multiple adapters and check if the results
        are the expected results
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")

            adapter_names = pipe.get_active_adapters()
            self.assertListEqual(adapter_names, ["adapter-1"])

            pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
            denoiser.add_adapter(denoiser_lora_config, "adapter-2")

            adapter_names = pipe.get_active_adapters()
            self.assertListEqual(adapter_names, ["adapter-2"])

            pipe.set_adapters(["adapter-1", "adapter-2"])
            self.assertListEqual(pipe.get_active_adapters(), ["adapter-1", "adapter-2"])

    def test_get_list_adapters(self):
        """
        Tests a simple usecase where we attach multiple adapters and check if the results
        are the expected results
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)

            # 1.
            dicts_to_be_checked = {}
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                dicts_to_be_checked = {"text_encoder": ["adapter-1"]}

            if self.unet_kwargs is not None:
                pipe.unet.add_adapter(denoiser_lora_config, "adapter-1")
                dicts_to_be_checked.update({"unet": ["adapter-1"]})
            else:
                pipe.transformer.add_adapter(denoiser_lora_config, "adapter-1")
                dicts_to_be_checked.update({"transformer": ["adapter-1"]})

            self.assertDictEqual(pipe.get_list_adapters(), dicts_to_be_checked)

            # 2.
            dicts_to_be_checked = {}
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
                dicts_to_be_checked = {"text_encoder": ["adapter-1", "adapter-2"]}

            if self.unet_kwargs is not None:
                pipe.unet.add_adapter(denoiser_lora_config, "adapter-2")
                dicts_to_be_checked.update({"unet": ["adapter-1", "adapter-2"]})
            else:
                pipe.transformer.add_adapter(denoiser_lora_config, "adapter-2")
                dicts_to_be_checked.update({"transformer": ["adapter-1", "adapter-2"]})

            self.assertDictEqual(pipe.get_list_adapters(), dicts_to_be_checked)

            # 3.
            pipe.set_adapters(["adapter-1", "adapter-2"])

            dicts_to_be_checked = {}
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                dicts_to_be_checked = {"text_encoder": ["adapter-1", "adapter-2"]}

            if self.unet_kwargs is not None:
                dicts_to_be_checked.update({"unet": ["adapter-1", "adapter-2"]})
            else:
                dicts_to_be_checked.update({"transformer": ["adapter-1", "adapter-2"]})

            self.assertDictEqual(
                pipe.get_list_adapters(),
                dicts_to_be_checked,
            )

            # 4.
            dicts_to_be_checked = {}
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                dicts_to_be_checked = {"text_encoder": ["adapter-1", "adapter-2"]}

            if self.unet_kwargs is not None:
                pipe.unet.add_adapter(denoiser_lora_config, "adapter-3")
                dicts_to_be_checked.update({"unet": ["adapter-1", "adapter-2", "adapter-3"]})
            else:
                pipe.transformer.add_adapter(denoiser_lora_config, "adapter-3")
                dicts_to_be_checked.update({"transformer": ["adapter-1", "adapter-2", "adapter-3"]})

            self.assertDictEqual(pipe.get_list_adapters(), dicts_to_be_checked)

    @require_peft_version_greater(peft_version="0.6.2")
    def test_simple_inference_with_text_lora_denoiser_fused_multi(
        self, expected_atol: float = 1e-3, expected_rtol: float = 1e-3
    ):
        """
        Tests a simple inference with lora attached into text encoder + fuses the lora weights into base model
        and makes sure it works as expected - with unet and multi-adapter case
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
                self.assertTrue(
                    check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
                )

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            denoiser.add_adapter(denoiser_lora_config, "adapter-1")

            # Attach a second adapter
            if "text_encoder" in self.pipeline_class._lora_loadable_modules:
                pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")

            denoiser.add_adapter(denoiser_lora_config, "adapter-2")

            self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

            if self.has_two_text_encoders or self.has_three_text_encoders:
                lora_loadable_components = self.pipeline_class._lora_loadable_modules
                if "text_encoder_2" in lora_loadable_components:
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
                    pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
                    self.assertTrue(
                        check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
                    )

            # set them to multi-adapter inference mode
            pipe.set_adapters(["adapter-1", "adapter-2"])
            outputs_all_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.set_adapters(["adapter-1"])
            outputs_lora_1 = pipe(**inputs, generator=torch.manual_seed(0))[0]

            pipe.fuse_lora(components=self.pipeline_class._lora_loadable_modules, adapter_names=["adapter-1"])

            # Fusing should still keep the LoRA layers so outpout should remain the same
            outputs_lora_1_fused = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertTrue(
                np.allclose(outputs_lora_1, outputs_lora_1_fused, atol=expected_atol, rtol=expected_rtol),
                "Fused lora should not change the output",
            )

            pipe.unfuse_lora(components=self.pipeline_class._lora_loadable_modules)
            pipe.fuse_lora(
                components=self.pipeline_class._lora_loadable_modules, adapter_names=["adapter-2", "adapter-1"]
            )

            # Fusing should still keep the LoRA layers
            output_all_lora_fused = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                np.allclose(output_all_lora_fused, outputs_all_lora, atol=expected_atol, rtol=expected_rtol),
                "Fused lora should not change the output",
            )

    @require_peft_version_greater(peft_version="0.9.0")
    def test_simple_inference_with_dora(self):
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(
                scheduler_cls, use_dora=True
            )
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_dora_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_dora_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            output_dora_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]

            self.assertFalse(
                np.allclose(output_dora_lora, output_no_dora_lora, atol=1e-3, rtol=1e-3),
                "DoRA lora should change the output",
            )

    def test_missing_keys_warning(self):
        scheduler_cls = self.scheduler_classes[0]
        # Skip text encoder check for now as that is handled with `transformers`.
        components, _, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)

        denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
        denoiser.add_adapter(denoiser_lora_config)
        self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

        with tempfile.TemporaryDirectory() as tmpdirname:
            modules_to_save = self._get_modules_to_save(pipe, has_denoiser=True)
            lora_state_dicts = self._get_lora_state_dicts(modules_to_save)
            self.pipeline_class.save_lora_weights(
                save_directory=tmpdirname, safe_serialization=False, **lora_state_dicts
            )
            pipe.unload_lora_weights()
            self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
            state_dict = torch.load(os.path.join(tmpdirname, "pytorch_lora_weights.bin"), weights_only=True)

        # To make things dynamic since we cannot settle with a single key for all the models where we
        # offer PEFT support.
        missing_key = [k for k in state_dict if "lora_A" in k][0]
        del state_dict[missing_key]

        logger = logging.get_logger("diffusers.loaders.peft")
        logger.setLevel(30)
        with CaptureLogger(logger) as cap_logger:
            pipe.load_lora_weights(state_dict)

        # Since the missing key won't contain the adapter name ("default_0").
        # Also strip out the component prefix (such as "unet." from `missing_key`).
        component = list({k.split(".")[0] for k in state_dict})[0]
        self.assertTrue(missing_key.replace(f"{component}.", "") in cap_logger.out.replace("default_0.", ""))

    def test_unexpected_keys_warning(self):
        scheduler_cls = self.scheduler_classes[0]
        # Skip text encoder check for now as that is handled with `transformers`.
        components, _, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)

        denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
        denoiser.add_adapter(denoiser_lora_config)
        self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

        with tempfile.TemporaryDirectory() as tmpdirname:
            modules_to_save = self._get_modules_to_save(pipe, has_denoiser=True)
            lora_state_dicts = self._get_lora_state_dicts(modules_to_save)
            self.pipeline_class.save_lora_weights(
                save_directory=tmpdirname, safe_serialization=False, **lora_state_dicts
            )
            pipe.unload_lora_weights()
            self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
            state_dict = torch.load(os.path.join(tmpdirname, "pytorch_lora_weights.bin"), weights_only=True)

        unexpected_key = [k for k in state_dict if "lora_A" in k][0] + ".diffusers_cat"
        state_dict[unexpected_key] = torch.tensor(1.0, device=torch_device)

        logger = logging.get_logger("diffusers.loaders.peft")
        logger.setLevel(30)
        with CaptureLogger(logger) as cap_logger:
            pipe.load_lora_weights(state_dict)

        self.assertTrue(".diffusers_cat" in cap_logger.out)

    @unittest.skip("This is failing for now - need to investigate")
    def test_simple_inference_with_text_denoiser_lora_unfused_torch_compile(self):
        """
        Tests a simple inference with lora attached to text encoder and unet, then unloads the lora weights
        and makes sure it works as expected
        """
        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            pipe.unet = torch.compile(pipe.unet, mode="reduce-overhead", fullgraph=True)
            pipe.text_encoder = torch.compile(pipe.text_encoder, mode="reduce-overhead", fullgraph=True)

            if self.has_two_text_encoders or self.has_three_text_encoders:
                pipe.text_encoder_2 = torch.compile(pipe.text_encoder_2, mode="reduce-overhead", fullgraph=True)

            # Just makes sure it works..
            _ = pipe(**inputs, generator=torch.manual_seed(0))[0]

    def test_modify_padding_mode(self):
        def set_pad_mode(network, mode="circular"):
            for _, module in network.named_modules():
                if isinstance(module, torch.nn.Conv2d):
                    module.padding_mode = mode

        for scheduler_cls in self.scheduler_classes:
            components, _, _ = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _pad_mode = "circular"
            set_pad_mode(pipe.vae, _pad_mode)
            set_pad_mode(pipe.unet, _pad_mode)

            _, _, inputs = self.get_dummy_inputs()
            _ = pipe(**inputs)[0]

    def test_logs_info_when_no_lora_keys_found(self):
        scheduler_cls = self.scheduler_classes[0]
        # Skip text encoder check for now as that is handled with `transformers`.
        components, _, _ = self.get_dummy_components(scheduler_cls)
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)

        _, _, inputs = self.get_dummy_inputs(with_generator=False)
        original_out = pipe(**inputs, generator=torch.manual_seed(0))[0]

        no_op_state_dict = {"lora_foo": torch.tensor(2.0), "lora_bar": torch.tensor(3.0)}
        logger = logging.get_logger("diffusers.loaders.peft")
        logger.setLevel(logging.WARNING)

        with CaptureLogger(logger) as cap_logger:
            pipe.load_lora_weights(no_op_state_dict)
        out_after_lora_attempt = pipe(**inputs, generator=torch.manual_seed(0))[0]

        denoiser = getattr(pipe, "unet") if self.unet_kwargs is not None else getattr(pipe, "transformer")
        self.assertTrue(cap_logger.out.startswith(f"No LoRA keys associated to {denoiser.__class__.__name__}"))
        self.assertTrue(np.allclose(original_out, out_after_lora_attempt, atol=1e-5, rtol=1e-5))

        # test only for text encoder
        for lora_module in self.pipeline_class._lora_loadable_modules:
            if "text_encoder" in lora_module:
                text_encoder = getattr(pipe, lora_module)
                if lora_module == "text_encoder":
                    prefix = "text_encoder"
                elif lora_module == "text_encoder_2":
                    prefix = "text_encoder_2"

                logger = logging.get_logger("diffusers.loaders.lora_base")
                logger.setLevel(logging.WARNING)

                with CaptureLogger(logger) as cap_logger:
                    self.pipeline_class.load_lora_into_text_encoder(
                        no_op_state_dict, network_alphas=None, text_encoder=text_encoder, prefix=prefix
                    )

                self.assertTrue(
                    cap_logger.out.startswith(f"No LoRA keys associated to {text_encoder.__class__.__name__}")
                )

    def test_set_adapters_match_attention_kwargs(self):
        """Test to check if outputs after `set_adapters()` and attention kwargs match."""
        call_signature_keys = inspect.signature(self.pipeline_class.__call__).parameters.keys()
        for possible_attention_kwargs in POSSIBLE_ATTENTION_KWARGS_NAMES:
            if possible_attention_kwargs in call_signature_keys:
                attention_kwargs_name = possible_attention_kwargs
                break
        assert attention_kwargs_name is not None

        for scheduler_cls in self.scheduler_classes:
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(scheduler_cls)
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device)
            pipe.set_progress_bar_config(disable=None)
            _, _, inputs = self.get_dummy_inputs(with_generator=False)

            output_no_lora = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(output_no_lora.shape == self.output_shape)

            pipe, _ = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            lora_scale = 0.5
            attention_kwargs = {attention_kwargs_name: {"scale": lora_scale}}
            output_lora_scale = pipe(**inputs, generator=torch.manual_seed(0), **attention_kwargs)[0]
            self.assertFalse(
                np.allclose(output_no_lora, output_lora_scale, atol=1e-3, rtol=1e-3),
                "Lora + scale should change the output",
            )

            pipe.set_adapters("default", lora_scale)
            output_lora_scale_wo_kwargs = pipe(**inputs, generator=torch.manual_seed(0))[0]
            self.assertTrue(
                not np.allclose(output_no_lora, output_lora_scale_wo_kwargs, atol=1e-3, rtol=1e-3),
                "Lora + scale should change the output",
            )
            self.assertTrue(
                np.allclose(output_lora_scale, output_lora_scale_wo_kwargs, atol=1e-3, rtol=1e-3),
                "Lora + scale should match the output of `set_adapters()`.",
            )

            with tempfile.TemporaryDirectory() as tmpdirname:
                modules_to_save = self._get_modules_to_save(pipe, has_denoiser=True)
                lora_state_dicts = self._get_lora_state_dicts(modules_to_save)
                self.pipeline_class.save_lora_weights(
                    save_directory=tmpdirname, safe_serialization=True, **lora_state_dicts
                )

                self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.safetensors")))
                pipe = self.pipeline_class(**components)
                pipe = pipe.to(torch_device)
                pipe.set_progress_bar_config(disable=None)
                pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.safetensors"))

                for module_name, module in modules_to_save.items():
                    self.assertTrue(check_if_lora_correctly_set(module), f"Lora not correctly set in {module_name}")

                output_lora_from_pretrained = pipe(**inputs, generator=torch.manual_seed(0), **attention_kwargs)[0]
                self.assertTrue(
                    not np.allclose(output_no_lora, output_lora_from_pretrained, atol=1e-3, rtol=1e-3),
                    "Lora + scale should change the output",
                )
                self.assertTrue(
                    np.allclose(output_lora_scale, output_lora_from_pretrained, atol=1e-3, rtol=1e-3),
                    "Loading from saved checkpoints should give same results as attention_kwargs.",
                )
                self.assertTrue(
                    np.allclose(output_lora_scale_wo_kwargs, output_lora_from_pretrained, atol=1e-3, rtol=1e-3),
                    "Loading from saved checkpoints should give same results as set_adapters().",
                )

    @require_peft_version_greater("0.13.2")
    def test_lora_B_bias(self):
        # Currently, this test is only relevant for Flux Control LoRA as we are not
        # aware of any other LoRA checkpoint that has its `lora_B` biases trained.
        components, _, denoiser_lora_config = self.get_dummy_components(self.scheduler_classes[0])
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)

        # keep track of the bias values of the base layers to perform checks later.
        bias_values = {}
        denoiser = pipe.unet if self.unet_kwargs is not None else pipe.transformer
        for name, module in denoiser.named_modules():
            if any(k in name for k in self.denoiser_target_modules):
                if module.bias is not None:
                    bias_values[name] = module.bias.data.clone()

        _, _, inputs = self.get_dummy_inputs(with_generator=False)

        logger = logging.get_logger("diffusers.loaders.lora_pipeline")
        logger.setLevel(logging.INFO)

        original_output = pipe(**inputs, generator=torch.manual_seed(0))[0]

        denoiser_lora_config.lora_bias = False
        if self.unet_kwargs is not None:
            pipe.unet.add_adapter(denoiser_lora_config, "adapter-1")
        else:
            pipe.transformer.add_adapter(denoiser_lora_config, "adapter-1")
        lora_bias_false_output = pipe(**inputs, generator=torch.manual_seed(0))[0]
        pipe.delete_adapters("adapter-1")

        denoiser_lora_config.lora_bias = True
        if self.unet_kwargs is not None:
            pipe.unet.add_adapter(denoiser_lora_config, "adapter-1")
        else:
            pipe.transformer.add_adapter(denoiser_lora_config, "adapter-1")
        lora_bias_true_output = pipe(**inputs, generator=torch.manual_seed(0))[0]

        self.assertFalse(np.allclose(original_output, lora_bias_false_output, atol=1e-3, rtol=1e-3))
        self.assertFalse(np.allclose(original_output, lora_bias_true_output, atol=1e-3, rtol=1e-3))
        self.assertFalse(np.allclose(lora_bias_false_output, lora_bias_true_output, atol=1e-3, rtol=1e-3))

    def test_correct_lora_configs_with_different_ranks(self):
        components, _, denoiser_lora_config = self.get_dummy_components(self.scheduler_classes[0])
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device)
        pipe.set_progress_bar_config(disable=None)
        _, _, inputs = self.get_dummy_inputs(with_generator=False)

        original_output = pipe(**inputs, generator=torch.manual_seed(0))[0]

        if self.unet_kwargs is not None:
            pipe.unet.add_adapter(denoiser_lora_config, "adapter-1")
        else:
            pipe.transformer.add_adapter(denoiser_lora_config, "adapter-1")

        lora_output_same_rank = pipe(**inputs, generator=torch.manual_seed(0))[0]

        if self.unet_kwargs is not None:
            pipe.unet.delete_adapters("adapter-1")
        else:
            pipe.transformer.delete_adapters("adapter-1")

        denoiser = pipe.unet if self.unet_kwargs is not None else pipe.transformer
        for name, _ in denoiser.named_modules():
            if "to_k" in name and "attn" in name and "lora" not in name:
                module_name_to_rank_update = name.replace(".base_layer.", ".")
                break

        # change the rank_pattern
        updated_rank = denoiser_lora_config.r * 2
        denoiser_lora_config.rank_pattern = {module_name_to_rank_update: updated_rank}

        if self.unet_kwargs is not None:
            pipe.unet.add_adapter(denoiser_lora_config, "adapter-1")
            updated_rank_pattern = pipe.unet.peft_config["adapter-1"].rank_pattern
        else:
            pipe.transformer.add_adapter(denoiser_lora_config, "adapter-1")
            updated_rank_pattern = pipe.transformer.peft_config["adapter-1"].rank_pattern

        self.assertTrue(updated_rank_pattern == {module_name_to_rank_update: updated_rank})

        lora_output_diff_rank = pipe(**inputs, generator=torch.manual_seed(0))[0]
        self.assertTrue(not np.allclose(original_output, lora_output_same_rank, atol=1e-3, rtol=1e-3))
        self.assertTrue(not np.allclose(lora_output_diff_rank, lora_output_same_rank, atol=1e-3, rtol=1e-3))

        if self.unet_kwargs is not None:
            pipe.unet.delete_adapters("adapter-1")
        else:
            pipe.transformer.delete_adapters("adapter-1")

        # similarly change the alpha_pattern
        updated_alpha = denoiser_lora_config.lora_alpha * 2
        denoiser_lora_config.alpha_pattern = {module_name_to_rank_update: updated_alpha}
        if self.unet_kwargs is not None:
            pipe.unet.add_adapter(denoiser_lora_config, "adapter-1")
            self.assertTrue(
                pipe.unet.peft_config["adapter-1"].alpha_pattern == {module_name_to_rank_update: updated_alpha}
            )
        else:
            pipe.transformer.add_adapter(denoiser_lora_config, "adapter-1")
            self.assertTrue(
                pipe.transformer.peft_config["adapter-1"].alpha_pattern == {module_name_to_rank_update: updated_alpha}
            )

        lora_output_diff_alpha = pipe(**inputs, generator=torch.manual_seed(0))[0]
        self.assertTrue(not np.allclose(original_output, lora_output_diff_alpha, atol=1e-3, rtol=1e-3))
        self.assertTrue(not np.allclose(lora_output_diff_alpha, lora_output_same_rank, atol=1e-3, rtol=1e-3))

    def test_layerwise_casting_inference_denoiser(self):
        from diffusers.hooks.layerwise_casting import DEFAULT_SKIP_MODULES_PATTERN, SUPPORTED_PYTORCH_LAYERS

        def check_linear_dtype(module, storage_dtype, compute_dtype):
            patterns_to_check = DEFAULT_SKIP_MODULES_PATTERN
            if getattr(module, "_skip_layerwise_casting_patterns", None) is not None:
                patterns_to_check += tuple(module._skip_layerwise_casting_patterns)
            for name, submodule in module.named_modules():
                if not isinstance(submodule, SUPPORTED_PYTORCH_LAYERS):
                    continue
                dtype_to_check = storage_dtype
                if "lora" in name or any(re.search(pattern, name) for pattern in patterns_to_check):
                    dtype_to_check = compute_dtype
                if getattr(submodule, "weight", None) is not None:
                    self.assertEqual(submodule.weight.dtype, dtype_to_check)
                if getattr(submodule, "bias", None) is not None:
                    self.assertEqual(submodule.bias.dtype, dtype_to_check)

        def initialize_pipeline(storage_dtype=None, compute_dtype=torch.float32):
            components, text_lora_config, denoiser_lora_config = self.get_dummy_components(self.scheduler_classes[0])
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device, dtype=compute_dtype)
            pipe.set_progress_bar_config(disable=None)

            pipe, denoiser = self.check_if_adapters_added_correctly(pipe, text_lora_config, denoiser_lora_config)

            if storage_dtype is not None:
                denoiser.enable_layerwise_casting(storage_dtype=storage_dtype, compute_dtype=compute_dtype)
                check_linear_dtype(denoiser, storage_dtype, compute_dtype)

            return pipe

        _, _, inputs = self.get_dummy_inputs(with_generator=False)

        pipe_fp32 = initialize_pipeline(storage_dtype=None)
        pipe_fp32(**inputs, generator=torch.manual_seed(0))[0]

        pipe_float8_e4m3_fp32 = initialize_pipeline(storage_dtype=torch.float8_e4m3fn, compute_dtype=torch.float32)
        pipe_float8_e4m3_fp32(**inputs, generator=torch.manual_seed(0))[0]

        pipe_float8_e4m3_bf16 = initialize_pipeline(storage_dtype=torch.float8_e4m3fn, compute_dtype=torch.bfloat16)
        pipe_float8_e4m3_bf16(**inputs, generator=torch.manual_seed(0))[0]

    @require_peft_version_greater("0.14.0")
    def test_layerwise_casting_peft_input_autocast_denoiser(self):
        r"""
        A test that checks if layerwise casting works correctly with PEFT layers and forward pass does not fail. This
        is different from `test_layerwise_casting_inference_denoiser` as that disables the application of layerwise
        cast hooks on the PEFT layers (relevant logic in `models.modeling_utils.ModelMixin.enable_layerwise_casting`).
        In this test, we enable the layerwise casting on the PEFT layers as well. If run with PEFT version <= 0.14.0,
        this test will fail with the following error:

        ```
        RuntimeError: expected mat1 and mat2 to have the same dtype, but got: c10::Float8_e4m3fn != float
        ```

        See the docstring of [`hooks.layerwise_casting.PeftInputAutocastDisableHook`] for more details.
        """

        from diffusers.hooks.layerwise_casting import (
            _PEFT_AUTOCAST_DISABLE_HOOK,
            DEFAULT_SKIP_MODULES_PATTERN,
            SUPPORTED_PYTORCH_LAYERS,
            apply_layerwise_casting,
        )

        storage_dtype = torch.float8_e4m3fn
        compute_dtype = torch.float32

        def check_module(denoiser):
            # This will also check if the peft layers are in torch.float8_e4m3fn dtype (unlike test_layerwise_casting_inference_denoiser)
            for name, module in denoiser.named_modules():
                if not isinstance(module, SUPPORTED_PYTORCH_LAYERS):
                    continue
                dtype_to_check = storage_dtype
                if any(re.search(pattern, name) for pattern in patterns_to_check):
                    dtype_to_check = compute_dtype
                if getattr(module, "weight", None) is not None:
                    self.assertEqual(module.weight.dtype, dtype_to_check)
                if getattr(module, "bias", None) is not None:
                    self.assertEqual(module.bias.dtype, dtype_to_check)
                if isinstance(module, BaseTunerLayer):
                    self.assertTrue(getattr(module, "_diffusers_hook", None) is not None)
                    self.assertTrue(module._diffusers_hook.get_hook(_PEFT_AUTOCAST_DISABLE_HOOK) is not None)

        # 1. Test forward with add_adapter
        components, _, denoiser_lora_config = self.get_dummy_components(self.scheduler_classes[0])
        pipe = self.pipeline_class(**components)
        pipe = pipe.to(torch_device, dtype=compute_dtype)
        pipe.set_progress_bar_config(disable=None)

        denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
        denoiser.add_adapter(denoiser_lora_config)
        self.assertTrue(check_if_lora_correctly_set(denoiser), "Lora not correctly set in denoiser.")

        patterns_to_check = DEFAULT_SKIP_MODULES_PATTERN
        if getattr(denoiser, "_skip_layerwise_casting_patterns", None) is not None:
            patterns_to_check += tuple(denoiser._skip_layerwise_casting_patterns)

        apply_layerwise_casting(
            denoiser, storage_dtype=storage_dtype, compute_dtype=compute_dtype, skip_modules_pattern=patterns_to_check
        )
        check_module(denoiser)

        _, _, inputs = self.get_dummy_inputs(with_generator=False)
        pipe(**inputs, generator=torch.manual_seed(0))[0]

        # 2. Test forward with load_lora_weights
        with tempfile.TemporaryDirectory() as tmpdirname:
            modules_to_save = self._get_modules_to_save(pipe, has_denoiser=True)
            lora_state_dicts = self._get_lora_state_dicts(modules_to_save)
            self.pipeline_class.save_lora_weights(
                save_directory=tmpdirname, safe_serialization=True, **lora_state_dicts
            )

            self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.safetensors")))
            components, _, _ = self.get_dummy_components(self.scheduler_classes[0])
            pipe = self.pipeline_class(**components)
            pipe = pipe.to(torch_device, dtype=compute_dtype)
            pipe.set_progress_bar_config(disable=None)
            pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.safetensors"))

            denoiser = pipe.transformer if self.unet_kwargs is None else pipe.unet
            apply_layerwise_casting(
                denoiser,
                storage_dtype=storage_dtype,
                compute_dtype=compute_dtype,
                skip_modules_pattern=patterns_to_check,
            )
            check_module(denoiser)

            _, _, inputs = self.get_dummy_inputs(with_generator=False)
            pipe(**inputs, generator=torch.manual_seed(0))[0]