25 lines
772 B
JavaScript
25 lines
772 B
JavaScript
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import assert from 'node:assert/strict';
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import test from 'node:test';
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import sharp from 'sharp';
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import { buildVisionThumbnailBuffer, VISION_THUMB_MAX_SIDE } from './vision-image-thumb.mjs';
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test('buildVisionThumbnailBuffer returns smaller jpeg payload for large png input', async () => {
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const png = await sharp({
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create: {
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width: 3200,
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height: 2400,
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channels: 3,
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background: { r: 120, g: 80, b: 200 },
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},
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})
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.png()
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.toBuffer();
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const thumb = await buildVisionThumbnailBuffer(png, 'image/png');
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const metadata = await sharp(thumb).metadata();
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assert.equal(metadata.format, 'jpeg');
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assert.ok(thumb.length < png.length);
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assert.ok(Math.max(metadata.width ?? 0, metadata.height ?? 0) <= VISION_THUMB_MAX_SIDE);
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});
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