Function testEnd

tests/unit/string_decoder.test.ts:209–223

(
    encoding: BufferEncoding,
    incomplete: Uint8Array,
    next: Uint8Array,
    expected: string
  )

  const bufs = ["☃💩", "asdf"].map((b) => Buffer.from(b));

  function testEnd(
    encoding: BufferEncoding,
    incomplete: Uint8Array,
    next: Uint8Array,
    expected: string
  ) {
    let res = "";
    const s = new StringDecoder(encoding);
    res += s.write(incomplete);
    res += s.end();
    res += s.write(next);
    res += s.end();

    expect(res).toEqual(expected);
  }

  function testEncoding(encoding: BufferEncoding) {
    bufs.forEach((buf) => {