text: 'use strict';
  
  var parse = require('../');
  var test = require('tape');
  
  test('boolean and alias is not unknown', function (t) {
      var unknown = [];
      function unknownFn(arg) {
          unknown.push(arg);
          return false;
      }
      var aliased = ['-h', 'true', '--derp', 'true'];
      var regular = ['--herp', 'true', '-d', 'true'];
      var opts = {
          alias: { h: 'herp' },
          boolean: 'h',
          unknown: unknownFn
      };
      var aliasedArgv = parse(aliased, opts);
      var propertyArgv = parse(regular, opts);
  
      t.same(unknown, ['--derp', '-d']);
      t.end();
  });
  
  test('flag boolean true any double hyphen argument is not unknown', function (t) {
      var unknown = [];
      function unknownFn(arg) {
          unknown.push(arg);
          return false;
      }
      var argv = parse(['--honk', '--tacos=good', 'cow', '-p', '55'], {
          boolean: true,
          unknown: unknownFn
      });
      t.same(unknown, ['--tacos=good', 'cow', '-p']);
      t.same(argv, {
          honk: true,
          _: []
      });
      t.end();
  });
  
  test('string and alias is not unknown', function (t) {
      var unknown = [];
      function unknownFn(arg) {
          unknown.push(arg);
          return false;
      }
      var aliased = ['-h', 'hello', '--derp', 'goodbye'];
      var regular = ['--herp', 'hello', '-d', 'moon'];
      var opts = {
          alias: { h: 'herp' },
          string: 'h',
          unknown: unknownFn
      };
      var aliasedArgv = parse(aliased, opts);
      var propertyArgv = parse(regular, opts);
  
      t.same(unknown, ['--derp', '-d']);
      t.end();
  });
  
  test('default and alias is not unknown', function (t) {
      var unknown = [];
      function unknownFn(arg) {
          unknown.push(arg);
          return false;
      }
      var aliased = ['-h', 'hello'];
      var regular = ['--herp', 'hello'];
      var opts = {
          default: { 'h': 'bar' },
          alias: { 'h': 'herp' },
          unknown: unknownFn
      };
      var aliasedArgv = parse(aliased, opts);
      var propertyArgv = parse(regular, opts);
  
      t.same(unknown, []);
      t.end();
      unknownFn(); // exercise fn for 100% coverage
  });
  
  test('value following -- is not unknown', function (t) {
      var unknown = [];
      function unknownFn(arg) {
          unknown.push(arg);
          return false;
      }
      var aliased = ['--bad', '--', 'good', 'arg'];
      var opts = {
          '--': true,
          unknown: unknownFn
      };
      var argv = parse(aliased, opts);
  
      t.same(unknown, ['--bad']);
      t.same(argv, {
          '--': ['good', 'arg'],
          '_': []
      });
      t.end();
  });