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
57 lines
1.7 KiB
JavaScript
57 lines
1.7 KiB
JavaScript
// META: global=window,worker
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// META: script=third_party/pako/pako_inflate.min.js
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// META: script=resources/decompress.js
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// META: script=resources/formats.js
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// META: timeout=long
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'use strict';
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// This test asserts that compressing '' doesn't affect the compressed data.
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// Example: compressing ['Hello', '', 'Hello'] results in 'HelloHello'
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async function compressChunkList(chunkList, format) {
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const cs = new CompressionStream(format);
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const writer = cs.writable.getWriter();
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for (const chunk of chunkList) {
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const chunkByte = new TextEncoder().encode(chunk);
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writer.write(chunkByte);
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}
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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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const chunkLists = [
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['', 'Hello', 'Hello'],
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['Hello', '', 'Hello'],
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['Hello', 'Hello', '']
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];
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const expectedValue = new TextEncoder().encode('HelloHello');
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for (const format of formats) {
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for (const chunkList of chunkLists) {
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promise_test(async t => {
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const compressedData = await compressChunkList(chunkList, format);
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const decompressedData = await decompressDataOrPako(compressedData, format);
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// check that we got the same result as our original string
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assert_array_equals(expectedValue, decompressedData, 'value should match');
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}, `the result of compressing [${chunkList}] with ${format} should be 'HelloHello'`);
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}
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}
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