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test: improve image-diff resize (#46986)

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* ci: enable splitTheme

* chore: remove blue border

* test: improve image-diff when size is different
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vagusX 2024-01-15 19:22:33 +08:00 committed by GitHub
parent 9490179108
commit 46abe90272
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1 changed files with 26 additions and 14 deletions
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40
scripts/visual-regression/build.ts
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@ -31,26 +31,38 @@ const compareScreenshots = async (
const currentImgBuf = await sharp(currentImgPath).toBuffer();
const basePng = PNG.sync.read(baseImgBuf);
const targetWidth = basePng.width;
const targetHeight = basePng.height;
const currentPng = PNG.sync.read(currentImgBuf);
const comparePng = PNG.sync.read(
await sharp(currentImgBuf)
.resize({
width: targetWidth,
height: targetHeight,
fit: sharp.fit.contain,
background: { r: 255, g: 255, b: 255, alpha: 0 },
})
.png()
.toBuffer(),
const targetWidth = Math.max(basePng.width, currentPng.width);
const targetHeight = Math.max(basePng.height, currentPng.height);
// fill color for transparent png
const fillColor =
baseImgPath.endsWith('dark.png') || baseImgPath.endsWith('dark.css-var.png')
? { r: 0, g: 0, b: 0, alpha: 255 }
: { r: 255, g: 255, b: 255, alpha: 255 };
const resizeOptions = {
width: targetWidth,
height: targetHeight,
position: 'left top',
fit: sharp.fit.contain,
background: fillColor,
};
const resizedBasePng = PNG.sync.read(
await sharp(baseImgBuf).resize(resizeOptions).png().toBuffer(),
);
const resizedCurrentPng = PNG.sync.read(
await sharp(currentImgBuf).resize(resizeOptions).png().toBuffer(),
);
const diffPng = new PNG({ width: targetWidth, height: targetHeight });
const mismatchedPixels = pixelmatch(
basePng.data,
comparePng.data,
resizedBasePng.data,
resizedCurrentPng.data,
diffPng.data,
targetWidth,
targetHeight,