grokbot_ty
15 lines
509 B
TypeScript
15 lines
509 B
TypeScript
import { test } from 'node:test';
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import assert from 'node:assert/strict';
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import { applyMaskAlpha } from './maskedPreview';
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test('applyMaskAlpha keeps slab pixels and clears the background', () => {
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const rgba = new Uint8ClampedArray([
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1, 2, 3, 255,
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4, 5, 6, 255,
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7, 8, 9, 255,
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]);
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const out = applyMaskAlpha(rgba, new Uint8Array([1, 0]));
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assert.deepEqual([...out], [1, 2, 3, 255, 4, 5, 6, 0, 7, 8, 9, 0]);
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assert.deepEqual([...rgba], [1, 2, 3, 255, 4, 5, 6, 255, 7, 8, 9, 255]);
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});
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