var {test, testModule, deepEqual} = require('./testutils.js')

var Enumerable = require('../linq.min');

testModule("Iterator");

test("for..of", function () {

let actual = [];

for (var a of Enumerable.from([1, 2, 3])) {

actual.push(a);

}

deepEqual(actual, [1, 2, 3]);

});

test("Symbol.iterator", function ()

{

let actual = [1,2,3,4];

expected = Array.from(Enumerable.from(actual));

deepEqual(actual, expected);

var actual2 = actual.map(function(x) { return x * 2 }); // [2,4,6,8];

expected = Enumerable.from(actual).select(function(x) { return x * 2 });

deepEqual(actual2, Array.from(expected));

});

test("from Iterable", function () {

function* words() {

yield "abc";

yield "def";

}

deepEqual(Enumerable.from(words()).toArray(), ["abc", "def"]);

let actual = [];

for (var a of Enumerable.from(words())) {

actual.push(a);

}

deepEqual(actual, ["abc", "def"]);

});