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# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import numpy as np
import torch
from diffusers import VersatileDiffusionImageVariationPipeline
from diffusers.utils.testing_utils import load_image, require_torch_gpu, slow, torch_device
torch.backends.cuda.matmul.allow_tf32 = False
class VersatileDiffusionImageVariationPipelineFastTests(unittest.TestCase):
pass
@slow
@require_torch_gpu
class VersatileDiffusionImageVariationPipelineIntegrationTests(unittest.TestCase):
def test_inference_image_variations(self):
pipe = VersatileDiffusionImageVariationPipeline.from_pretrained("shi-labs/versatile-diffusion")
pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
image_prompt = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/versatile_diffusion/benz.jpg"
)
generator = torch.manual_seed(0)
image = pipe(
image=image_prompt,
generator=generator,
guidance_scale=7.5,
num_inference_steps=50,
output_type="numpy",
).images
image_slice = image[0, 253:256, 253:256, -1]
assert image.shape == (1, 512, 512, 3)
expected_slice = np.array([0.0441, 0.0469, 0.0507, 0.0575, 0.0632, 0.0650, 0.0865, 0.0909, 0.0945])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
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