decompression-correct-input.tentative.any.js

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This WPT test may be referenced by the following Test IDs:
- /compression/zstd/decompression-correct-input.tentative.any.html - WPT Dashboard Interop Dashboard
- /compression/zstd/decompression-correct-input.tentative.any.serviceworker.html - WPT Dashboard Interop Dashboard
- /compression/zstd/decompression-correct-input.tentative.any.sharedworker.html - WPT Dashboard Interop Dashboard
- /compression/zstd/decompression-correct-input.tentative.any.worker.html - WPT Dashboard Interop Dashboard

// META: global=window,worker

"use strict";

// The zstd-compressed bytes for the string "expected output".

const compressedZstdBytes = new Uint8Array([

  0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x58, 0x79, 0x00, 0x00, 0x65, 0x78, 0x70, 0x65,

  0x63, 0x74, 0x65, 0x64, 0x20, 0x6f, 0x75, 0x74, 0x70, 0x75, 0x74, 0x5b, 0x11,

  0xc6, 0x85,

]);

promise_test(async t => {

  const ds = new DecompressionStream("zstd");

  const writer = ds.writable.getWriter();

  const reader = ds.readable.getReader();

  const writePromise = writer.write(compressedZstdBytes);

  const writerClosePromise = writer.close();

  const { value, done } = await reader.read();

  assert_false(

    done,

    "The done flag should not be set after reading valid input"

);

  await writePromise;

  await writerClosePromise;

  const decompressedText = new TextDecoder().decode(value);

  assert_equals(

    decompressedText,

    "expected output",

    "The decompressed text should match the expected text"

);

}, "decompressing valid zstd input should yield 'expected output'");