Function testDecode

tests/unit/string_decoder.test.ts:11–32

(
      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