Function testDecode

tests/unit/string_decoder.test.ts:17–38

(
    encoding: BufferEncoding,
    input: Buffer,
    expected: string,
    singleSequence?: Array<Array<number>>
  )

  // singleSequence allows for easy debugging of a specific sequence which is
  // useful in case of testDecode failures.
  function testDecode(
    encoding: BufferEncoding,
    input: Buffer,
    expected: string,
    singleSequence?: Array<Array<number>>
  ) {
    let sequences;
    if (!singleSequence) {
      sequences = writeSequences(input.length);
    } else {
      sequences = [singleSequence];
    }
    sequences.forEach((sequence) => {
      const decoder = new StringDecoder(encoding);
      let output = "";
      sequence.forEach((write) => {
        output += decoder.write(input.slice(write[0], write[1]));
      });
      output += decoder.end();
      expect(output).toEqual(expected);
    });
  }

  // writeSequences returns an array of arrays that describes all possible ways a
  // buffer of the given length could be split up and passed to sequential write