node/test/parallel/test-http-dns-error.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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'use strict';
const common = require('../common');

if (!common.hasCrypto)
  common.skip('missing crypto');

const assert = require('assert');
const http = require('http');
const https = require('https');

const host = '*'.repeat(256);

function do_not_call() {
  throw new Error('This function should not have been called.');
}

function test(mod) {

  // Bad host name should not throw an uncatchable exception.
  // Ensure that there is time to attach an error listener.
  const req1 = mod.get({ host: host, port: 42 }, do_not_call);
  req1.on('error', common.mustCall(function(err) {
    assert.strictEqual(err.code, 'ENOTFOUND');
  }));
  // http.get() called req1.end() for us

  const req2 = mod.request({
    method: 'GET',
    host: host,
    port: 42
  }, do_not_call);
  req2.on('error', common.mustCall(function(err) {
    assert.strictEqual(err.code, 'ENOTFOUND');
  }));
  req2.end();
}

if (common.hasCrypto) {
  test(https);
} else {
  common.printSkipMessage('missing crypto');
}

test(http);