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diffusers/tests/single_file/test_stable_diffusion_upscale_single_file.py
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Fanli Lin 6b288ec44d make pipelines tests device-agnostic (part2) (#9400)
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Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>

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Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>
2024-11-29 11:33:41 +05:30

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2.4 KiB
Python

import gc
import unittest
import torch
from diffusers import (
StableDiffusionUpscalePipeline,
)
from diffusers.utils import load_image
from diffusers.utils.testing_utils import (
backend_empty_cache,
enable_full_determinism,
numpy_cosine_similarity_distance,
require_torch_accelerator,
slow,
torch_device,
)
from .single_file_testing_utils import SDSingleFileTesterMixin
enable_full_determinism()
@slow
@require_torch_accelerator
class StableDiffusionUpscalePipelineSingleFileSlowTests(unittest.TestCase, SDSingleFileTesterMixin):
pipeline_class = StableDiffusionUpscalePipeline
ckpt_path = "https://huggingface.co/stabilityai/stable-diffusion-x4-upscaler/blob/main/x4-upscaler-ema.safetensors"
original_config = "https://raw.githubusercontent.com/Stability-AI/stablediffusion/main/configs/stable-diffusion/x4-upscaling.yaml"
repo_id = "stabilityai/stable-diffusion-x4-upscaler"
def setUp(self):
super().setUp()
gc.collect()
backend_empty_cache(torch_device)
def tearDown(self):
super().tearDown()
gc.collect()
backend_empty_cache(torch_device)
def test_single_file_format_inference_is_same_as_pretrained(self):
image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
"/sd2-upscale/low_res_cat.png"
)
prompt = "a cat sitting on a park bench"
pipe = StableDiffusionUpscalePipeline.from_pretrained(self.repo_id)
pipe.enable_model_cpu_offload()
generator = torch.Generator("cpu").manual_seed(0)
output = pipe(prompt=prompt, image=image, generator=generator, output_type="np", num_inference_steps=3)
image_from_pretrained = output.images[0]
pipe_from_single_file = StableDiffusionUpscalePipeline.from_single_file(self.ckpt_path)
pipe_from_single_file.enable_model_cpu_offload()
generator = torch.Generator("cpu").manual_seed(0)
output_from_single_file = pipe_from_single_file(
prompt=prompt, image=image, generator=generator, output_type="np", num_inference_steps=3
)
image_from_single_file = output_from_single_file.images[0]
assert image_from_pretrained.shape == (512, 512, 3)
assert image_from_single_file.shape == (512, 512, 3)
assert (
numpy_cosine_similarity_distance(image_from_pretrained.flatten(), image_from_single_file.flatten()) < 1e-3
)