text: 'use strict';
  
  var Set            = require('../../primitive')
    , toArray        = require('es5-ext/array/to-array')
    , iteratorSymbol = require('es6-symbol').iterator
  
    , compare, map;
  
  compare = function (a, b) {
  	if (!a.value) return -1;
  	if (!b.value) return 1;
  	return a.value.localeCompare(b.value);
  };
  
  map = function (arr) {
  	return arr.sort().map(function (value) {
  		return { done: false, value: value };
  	});
  };
  
  module.exports = function (T) {
  	return {
  		"": function (a) {
  			var arr = ['raz', 'dwa', 'trzy', 'cztery', 'pięć'], it, y, z
  			  , set = new Set(arr), result = [];
  
  			it = new T(set);
  			a(it[iteratorSymbol](), it, "@@iterator");
  			y = it.next();
  			result.push(y);
  			z = it.next();
  			a.not(y, z, "Recreate result");
  			result.push(z);
  			result.push(it.next());
  			result.push(it.next());
  			result.push(it.next());
  			a.deep(result.sort(compare), map(arr));
  			a.deep(y = it.next(), { done: true, value: undefined }, "End");
  			a.not(y, it.next(), "Recreate result on dead");
  		},
  		Emited: function (a) {
  			var arr = ['raz', 'dwa', 'trzy', 'cztery', 'pięć'], it
  			  , set = new Set(arr), result = [];
  
  			it = new T(set);
  			result.push(it.next());
  			result.push(it.next());
  			set.add('sześć');
  			arr.push('sześć');
  			result.push(it.next());
  			set.delete('pięć');
  			arr.splice(4, 1);
  			result.push(it.next());
  			result.push(it.next());
  			a.deep(result.sort(compare), map(arr));
  			a.deep(it.next(), { done: true, value: undefined }, "End");
  		},
  		"Emited #2": function (a) {
  			var arr = ['raz', 'dwa', 'trzy', 'cztery', 'pięć', 'sześć'], it
  			  , set = new Set(arr), result = [];
  
  			it = new T(set);
  			result.push(it.next());
  			result.push(it.next());
  			set.add('siedem');
  			set.delete('siedem');
  			result.push(it.next());
  			result.push(it.next());
  			set.delete('pięć');
  			arr.splice(4, 1);
  			result.push(it.next());
  			a.deep(result.sort(compare), map(arr));
  			a.deep(it.next(), { done: true, value: undefined }, "End");
  		},
  		"Emited: Clear #1": function (a) {
  			var arr = ['raz', 'dwa', 'trzy', 'cztery', 'pięć', 'sześć'], it
  			  , set = new Set(arr), result = [];
  
  			it = new T(set);
  			result.push(it.next());
  			result.push(it.next());
  			arr = ['raz', 'dwa'];
  			set.clear();
  			a.deep(result.sort(compare), map(arr));
  			a.deep(it.next(), { done: true, value: undefined }, "End");
  		},
  		"Emited: Clear #2": function (a) {
  			var arr = ['raz', 'dwa', 'trzy', 'cztery', 'pięć', 'sześć'], it
  			  , set = new Set(arr), result = [];
  
  			it = new T(set);
  			result.push(it.next());
  			result.push(it.next());
  			set.clear();
  			set.add('foo');
  			set.add('bar');
  			arr = ['raz', 'dwa', 'foo', 'bar'];
  			result.push(it.next());
  			result.push(it.next());
  			a.deep(result.sort(compare), map(arr));
  			a.deep(it.next(), { done: true, value: undefined }, "End");
  		},
  		Kinds: function (a) {
  			var set = new Set(['raz', 'dwa']);
  
  			a.deep(toArray(new T(set)).sort(), ['raz', 'dwa'].sort(), "Default");
  			a.deep(toArray(new T(set, 'key+value')).sort(),
  				[['raz', 'raz'], ['dwa', 'dwa']].sort(), "Key & Value");
  			a.deep(toArray(new T(set, 'value')).sort(), ['raz', 'dwa'].sort(),
  				"Other");
  		}
  	};
  };
  