text: 'use strict';
  
  // Flags: --expose-internals
  
  require('../common');
  const assert = require('assert');
  const isLegalPort = require('internal/net').isLegalPort;
  
  for (let n = 0; n <= 0xFFFF; n++) {
    assert(isLegalPort(n));
    assert(isLegalPort(String(n)));
    assert(`0x${n.toString(16)}`);
    assert(`0o${n.toString(8)}`);
    assert(`0b${n.toString(2)}`);
  }
  
  const bad = [-1, 'a', {}, [], false, true, 0xFFFF + 1, Infinity,
               -Infinity, NaN, undefined, null, '', ' ', 1.1, '0x',
               '-0x1', '-0o1', '-0b1', '0o', '0b'];
  bad.forEach((i) => assert(!isLegalPort(i)));
  