Function test

test/parallel/test-http-response-splitting.js:24–34

(res, code, key, value)

const countdown = new Countdown(3, () => server.close());

function test(res, code, key, value) {
  const header = { [key]: value };
  assert.throws(
    () => res.writeHead(code, header),
    {
      code: 'ERR_INVALID_CHAR',
      name: 'TypeError',
      message: `Invalid character in header content ["${key}"]`
    }
  );
}

const server = http.createServer((req, res) => {
  switch (count++) {