149 lines
5.1 KiB
Python
149 lines
5.1 KiB
Python
import base64
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import mimetypes
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from tempfile import NamedTemporaryFile
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from typing import Dict, Tuple
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import numpy as np
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import pytest
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from PIL import Image
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from transformers import AutoConfig, AutoTokenizer
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from vllm.multimodal.utils import (async_fetch_image, fetch_image,
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repeat_and_pad_placeholder_tokens)
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# Test different image extensions (JPG/PNG) and formats (gray/RGB/RGBA)
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TEST_IMAGE_URLS = [
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"https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
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"https://upload.wikimedia.org/wikipedia/commons/f/fa/Grayscale_8bits_palette_sample_image.png",
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"https://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Venn_diagram_rgb.svg/1280px-Venn_diagram_rgb.svg.png",
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"https://upload.wikimedia.org/wikipedia/commons/0/0b/RGBA_comp.png",
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]
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@pytest.fixture(scope="module")
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def url_images() -> Dict[str, Image.Image]:
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return {image_url: fetch_image(image_url) for image_url in TEST_IMAGE_URLS}
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def get_supported_suffixes() -> Tuple[str, ...]:
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# We should at least test the file types mentioned in GPT-4 with Vision
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OPENAI_SUPPORTED_SUFFIXES = ('.png', '.jpeg', '.jpg', '.webp', '.gif')
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# Additional file types that are supported by us
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EXTRA_SUPPORTED_SUFFIXES = ('.bmp', '.tiff')
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return OPENAI_SUPPORTED_SUFFIXES + EXTRA_SUPPORTED_SUFFIXES
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def _image_equals(a: Image.Image, b: Image.Image) -> bool:
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return (np.asarray(a) == np.asarray(b.convert(a.mode))).all()
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@pytest.mark.asyncio
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@pytest.mark.parametrize("image_url", TEST_IMAGE_URLS)
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async def test_fetch_image_http(image_url: str):
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image_sync = fetch_image(image_url)
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image_async = await async_fetch_image(image_url)
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assert _image_equals(image_sync, image_async)
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@pytest.mark.asyncio
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@pytest.mark.parametrize("image_url", TEST_IMAGE_URLS)
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@pytest.mark.parametrize("suffix", get_supported_suffixes())
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async def test_fetch_image_base64(url_images: Dict[str, Image.Image],
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image_url: str, suffix: str):
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url_image = url_images[image_url]
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try:
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mime_type = Image.MIME[Image.registered_extensions()[suffix]]
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except KeyError:
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try:
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mime_type = mimetypes.types_map[suffix]
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except KeyError:
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pytest.skip('No MIME type')
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with NamedTemporaryFile(suffix=suffix) as f:
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try:
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url_image.save(f.name)
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except Exception as e:
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if e.args[0] == 'cannot write mode RGBA as JPEG':
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pytest.skip('Conversion not supported')
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raise
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base64_image = base64.b64encode(f.read()).decode("utf-8")
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data_url = f"data:{mime_type};base64,{base64_image}"
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data_image_sync = fetch_image(data_url)
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if _image_equals(url_image, Image.open(f)):
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assert _image_equals(url_image, data_image_sync)
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else:
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pass # Lossy format; only check that image can be opened
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data_image_async = await async_fetch_image(data_url)
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assert _image_equals(data_image_sync, data_image_async)
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@pytest.mark.parametrize("model", ["llava-hf/llava-v1.6-mistral-7b-hf"])
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def test_repeat_and_pad_placeholder_tokens(model):
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config = AutoConfig.from_pretrained(model)
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image_token_id = config.image_token_index
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tokenizer = AutoTokenizer.from_pretrained(model)
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test_cases = [
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(
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"<image>",
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2,
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"<image><image>",
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[32000, 32000],
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[{ "offset": 0, "length": 2 }],
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),
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(
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"<image><image>",
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2,
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"<image><image><image>",
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[32000, 32000, 32000],
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[{ "offset": 0, "length": 2 }]),
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(
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"<image><image>",
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[3, 2],
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"<image><image><image><image><image>",
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[32000, 32000, 32000, 32000, 32000],
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[{ "offset": 0, "length": 3 }, { "offset": 3, "length": 2 }],
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),
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(
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"Image:<image>Image:<image>!",
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[3, 2],
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"Image:<image><image><image>Image:<image><image>!",
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[9833, 28747, 32000, 32000, 32000, 9833, 28747, 32000, 32000, 918],
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[{ "offset": 2, "length": 3 }, { "offset": 7, "length": 2 }],
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),
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(
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"<image>",
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[3, 2],
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"<image><image><image>",
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[32000, 32000, 32000],
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[{ "offset": 0, "length": 3 }],
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),
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] # yapf: disable
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for (
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prompt,
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repeat_count,
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expected_prompt,
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expected_token_ids,
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expected_ranges,
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) in test_cases:
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new_prompt, new_token_ids, ranges = repeat_and_pad_placeholder_tokens(
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tokenizer=tokenizer,
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prompt=prompt,
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prompt_token_ids=tokenizer.encode(prompt,
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add_special_tokens=False),
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placeholder_token_id=image_token_id,
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repeat_count=repeat_count,
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)
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assert new_prompt == expected_prompt
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assert new_token_ids == expected_token_ids
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assert ranges == expected_ranges
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