Anne van Kesteren
47a27e9af8
Automatic update from web-platform-tests Remove ShadowRealm test coverage This intentionally does not make infrastructure or documentation changes, but without implementer support all the ShadowRealm tests add significant noise. Once there is implementer support this can be reverted. -- wpt-commits: e4a4672e9e607fc2b28e7173b83ce4e38ef53071 wpt-pr: 59794
48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
// META: global=window,worker
|
|
// META: script=resources/formats.js
|
|
|
|
'use strict';
|
|
|
|
// This test asserts that compressed data length is shorter than the original
|
|
// data length. If the input is extremely small, the compressed data may be
|
|
// larger than the original data.
|
|
|
|
const LARGE_FILE = '/media/test-av-384k-44100Hz-1ch-320x240-30fps-10kfr.webm';
|
|
|
|
async function compressArrayBuffer(input, format) {
|
|
const cs = new CompressionStream(format);
|
|
const writer = cs.writable.getWriter();
|
|
writer.write(input);
|
|
const closePromise = writer.close();
|
|
const out = [];
|
|
const reader = cs.readable.getReader();
|
|
let totalSize = 0;
|
|
while (true) {
|
|
const { value, done } = await reader.read();
|
|
if (done)
|
|
break;
|
|
out.push(value);
|
|
totalSize += value.byteLength;
|
|
}
|
|
await closePromise;
|
|
const concatenated = new Uint8Array(totalSize);
|
|
let offset = 0;
|
|
for (const array of out) {
|
|
concatenated.set(array, offset);
|
|
offset += array.byteLength;
|
|
}
|
|
return concatenated;
|
|
}
|
|
|
|
for (const format of formats) {
|
|
promise_test(async () => {
|
|
const response = await fetch(LARGE_FILE);
|
|
const buffer = await response.arrayBuffer();
|
|
const bufferView = new Uint8Array(buffer);
|
|
const originalLength = bufferView.length;
|
|
const compressedData = await compressArrayBuffer(bufferView, format);
|
|
const compressedLength = compressedData.length;
|
|
assert_less_than(compressedLength, originalLength, 'output should be smaller');
|
|
}, `the length of ${format} data should be shorter than that of the original data`);
|
|
}
|