test/parallel/test-http-res-write-end-dont-take-array.js

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'use strict';
const common = require('../common');
const assert = require('assert');
const http = require('http');

const server = http.createServer();

server.once('request', common.mustCall((req, res) => {
  server.on('request', common.mustCall((req, res) => {
    res.end(Buffer.from('asdf'));
  }));
  // `res.write()` should accept `string`.
  res.write('string');
  // `res.write()` should accept `buffer`.
  res.write(Buffer.from('asdf'));

  const expectedError = {
    code: 'ERR_INVALID_ARG_TYPE',
    name: 'TypeError',
  };

  // `res.write()` should not accept an Array.
  assert.throws(
    () => {
      res.write(['array']);
    },
    expectedError
  );

  // `res.end()` should not accept an Array.
  assert.throws(
    () => {
      res.end(['moo']);
    },
    expectedError
  );

  // `res.end()` should accept `string`.
  res.end('string');
}));

server.listen(0, function() {
  // Just make a request, other tests handle responses.
  http.get({ port: this.address().port }, (res) => {
    res.resume();
    // Do it again to test .end(Buffer);
    http.get({ port: server.address().port }, (res) => {
      res.resume();
      server.close();
    });
  });
});