7feff3a715
PR-URL: https://github.com/nodejs/node/pull/62107 Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Mattias Buelens <mattias@buelens.com> Reviewed-By: René <contact.9a5d6388@renegade334.me.uk>
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
// META: global=window,worker,shadowrealm
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// META: script=resources/formats.js
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'use strict';
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// This test asserts that compressed data length is shorter than the original
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// data length. If the input is extremely small, the compressed data may be
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// larger than the original data.
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const LARGE_FILE = '/media/test-av-384k-44100Hz-1ch-320x240-30fps-10kfr.webm';
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async function compressArrayBuffer(input, format) {
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const cs = new CompressionStream(format);
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const writer = cs.writable.getWriter();
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writer.write(input);
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const closePromise = writer.close();
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const out = [];
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const reader = cs.readable.getReader();
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let totalSize = 0;
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while (true) {
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const { value, done } = await reader.read();
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if (done)
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break;
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out.push(value);
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totalSize += value.byteLength;
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}
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await closePromise;
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const concatenated = new Uint8Array(totalSize);
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let offset = 0;
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for (const array of out) {
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concatenated.set(array, offset);
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offset += array.byteLength;
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}
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return concatenated;
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}
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for (const format of formats) {
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promise_test(async () => {
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const response = await fetch(LARGE_FILE);
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const buffer = await response.arrayBuffer();
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const bufferView = new Uint8Array(buffer);
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const originalLength = bufferView.length;
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const compressedData = await compressArrayBuffer(bufferView, format);
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const compressedLength = compressedData.length;
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assert_less_than(compressedLength, originalLength, 'output should be smaller');
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}, `the length of ${format} data should be shorter than that of the original data`);
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}
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