61 lines
1.5 KiB
TypeScript
61 lines
1.5 KiB
TypeScript
// Copyright 2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import * as fs from 'fs';
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import * as path from 'path';
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import { assert } from 'chai';
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import { getAnimatedPngDataIfExists } from '../../util/getAnimatedPngDataIfExists';
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describe('getAnimatedPngDataIfExists', () => {
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const fixture = (filename: string): Promise<Buffer> => {
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const fixturePath = path.join(
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__dirname,
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'..',
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'..',
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'..',
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'fixtures',
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filename
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);
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return fs.promises.readFile(fixturePath);
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};
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it('returns null for empty buffers', () => {
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assert.isNull(getAnimatedPngDataIfExists(Buffer.alloc(0)));
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});
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it('returns null for non-PNG files', async () => {
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await Promise.all(
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[
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'kitten-1-64-64.jpg',
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'512x515-thumbs-up-lincoln.webp',
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'giphy-GVNvOUpeYmI7e.gif',
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'pixabay-Soap-Bubble-7141.mp4',
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'lorem-ipsum.txt',
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].map(async filename => {
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assert.isNull(getAnimatedPngDataIfExists(await fixture(filename)));
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})
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);
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});
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it('returns null for non-animated PNG files', async () => {
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assert.isNull(
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getAnimatedPngDataIfExists(await fixture('20x200-yellow.png'))
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);
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});
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it('returns data for animated PNG files', async () => {
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assert.deepEqual(
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getAnimatedPngDataIfExists(
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await fixture('Animated_PNG_example_bouncing_beach_ball.png')
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),
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{ numPlays: Infinity }
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);
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assert.deepEqual(
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getAnimatedPngDataIfExists(await fixture('apng_with_2_plays.png')),
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{ numPlays: 2 }
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);
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});
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});
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