Function testValid

test/parallel/test-fs-read-optional-params.js:13–29

(message, ...options)

const bufferAsOption = Buffer.allocUnsafe(expected.byteLength);

function testValid(message, ...options) {
  const paramsMsg = `${message} (as params)`;
  const paramsFilehandle = fs.openSync(filepath, 'r');
  fs.read(paramsFilehandle, ...options, common.mustSucceed((bytesRead, buffer) => {
    assert.strictEqual(bytesRead, expected.byteLength, paramsMsg);
    assert.deepStrictEqual(defaultBufferAsync.byteLength, buffer.byteLength, paramsMsg);
    fs.closeSync(paramsFilehandle);
  }));

  const optionsMsg = `${message} (as options)`;
  const optionsFilehandle = fs.openSync(filepath, 'r');
  fs.read(optionsFilehandle, bufferAsOption, ...options, common.mustSucceed((bytesRead, buffer) => {
    assert.strictEqual(bytesRead, expected.byteLength, optionsMsg);
    assert.deepStrictEqual(bufferAsOption.byteLength, buffer.byteLength, optionsMsg);
    fs.closeSync(optionsFilehandle);
  }));
}

testValid('Not passing in any object');
testValid('Passing in a null', null);