Function check

test/parallel/test-querystring.js:187–209

(actual, expected, input)

                   '918854443121279438895193');

function check(actual, expected, input) {
  assert(!(actual instanceof Object));
  const actualKeys = Object.keys(actual).sort();
  const expectedKeys = Object.keys(expected).sort();
  let msg;
  if (typeof input === 'string') {
    msg = `Input: ${inspect(input)}\n` +
          `Actual keys: ${inspect(actualKeys)}\n` +
          `Expected keys: ${inspect(expectedKeys)}`;
  }
  assert.deepStrictEqual(actualKeys, expectedKeys, msg);
  expectedKeys.forEach((key) => {
    if (typeof input === 'string') {
      msg = `Input: ${inspect(input)}\n` +
            `Key: ${inspect(key)}\n` +
            `Actual value: ${inspect(actual[key])}\n` +
            `Expected value: ${inspect(expected[key])}`;
    } else {
      msg = undefined;
    }
    assert.deepStrictEqual(actual[key], expected[key], msg);
  });
}

// Test that the canonical qs is parsed properly.
qsTestCases.forEach((testCase) => {