glife/syntax/atom/qsp-package/node_modules/es5-ext/test/array/from/shim.js

// Some tests taken from: https://github.com/mathiasbynens/Array.from/blob/master/tests/tests.js

'use strict';

module.exports = function (t, a) {
	var o = [1, 2, 3], MyType;
	a.not(t(o), o, "Array");
	a.deep(t(o), o, "Array: same content");
	a.deep(t('12r3v'), ['1', '2', 'r', '3', 'v'], "String");
	a.deep(t((function () { return arguments; }(3, o, 'raz'))),
		[3, o, 'raz'], "Arguments");
	a.deep(t((function () { return arguments; }(3))), [3],
		"Arguments with one numeric value");

	a.deep(t({ 0: 'raz', 1: 'dwa', length: 2 }), ['raz', 'dwa'], "Other");

	a.deep(t(o, function (val) { return (val + 2) * 10; }, 10), [30, 40, 50],
		"Mapping");

	a.throws(function () { t(); }, TypeError, "Undefined");
	a.deep(t(3), [], "Primitive");

	a(t.length, 1, "Length");
	a.deep(t({ length: 0 }), [], "No values Array-like");
	a.deep(t({ length: -1 }), [], "Invalid length Array-like");
	a.deep(t({ length: -Infinity }), [], "Invalid length Array-like #2");
	a.throws(function () { t(undefined); }, TypeError, "Undefined");
	a.throws(function () { t(null); }, TypeError, "Null");
	a.deep(t(false), [], "Boolean");
	a.deep(t(-Infinity), [], "Inifity");
	a.deep(t(-0), [], "-0");
	a.deep(t(+0), [], "+0");
	a.deep(t(1), [], "1");
	a.deep(t(+Infinity), [], "+Infinity");
	a.deep(t({}), [], "Plain object");
	a.deep(t({ length: 1 }), [undefined], "Sparse array-like");
	a.deep(t({ '0': 'a', '1': 'b', length: 2 }, function (x) { return x + x; }), ['aa', 'bb'],
		"Map");
	a.deep(t({ '0': 'a', '1': 'b', length: 2 }, function (x) { return String(this); }, undefined),
		['undefined', 'undefined'], "Map context");
	a.deep(t({ '0': 'a', '1': 'b', length: 2 }, function (x) { return String(this); }, 'x'),
		['x', 'x'], "Map primitive context");
	a.throws(function () { t({}, 'foo', 'x'); }, TypeError, "Non callable for map");

	a.deep(t.call(null, { length: 1, '0': 'a' }), ['a'], "Null context");

	a(t({ __proto__: { '0': 'abc', length: 1 } })[0], 'abc', "Values on prototype");

	a.throws(function () { t.call(function () { return Object.freeze({}); }, {}); },
		TypeError, "Contructor producing freezed objects");

	// Ensure no setters are called for the indexes
	// Ensure no setters are called for the indexes
	MyType = function () {};
	Object.defineProperty(MyType.prototype, '0', {
		set: function (x) { throw new Error('Setter called: ' + x); }
	});
	a.deep(t.call(MyType, { '0': 'abc', length: 1 }), { '0': 'abc', length: 1 },
		"Defined not set");
};