module("equiv");


test("Primitive types and constants", function () {
	equal(QUnit.equiv(null, null), true, "null");
	equal(QUnit.equiv(null, {}), false, "null");
	equal(QUnit.equiv(null, undefined), false, "null");
	equal(QUnit.equiv(null, 0), false, "null");
	equal(QUnit.equiv(null, false), false, "null");
	equal(QUnit.equiv(null, ''), false, "null");
	equal(QUnit.equiv(null, []), false, "null");

	equal(QUnit.equiv(undefined, undefined), true, "undefined");
	equal(QUnit.equiv(undefined, null), false, "undefined");
	equal(QUnit.equiv(undefined, 0), false, "undefined");
	equal(QUnit.equiv(undefined, false), false, "undefined");
	equal(QUnit.equiv(undefined, {}), false, "undefined");
	equal(QUnit.equiv(undefined, []), false, "undefined");
	equal(QUnit.equiv(undefined, ""), false, "undefined");

	// Nan usually doest not equal to Nan using the '==' operator.
	// Only isNaN() is able to do it.
	equal(QUnit.equiv(0/0, 0/0), true, "NaN"); // NaN VS NaN
	equal(QUnit.equiv(1/0, 2/0), true, "Infinity"); // Infinity VS Infinity
	equal(QUnit.equiv(-1/0, 2/0), false, "-Infinity, Infinity"); // -Infinity VS Infinity
	equal(QUnit.equiv(-1/0, -2/0), true, "-Infinity, -Infinity"); // -Infinity VS -Infinity
	equal(QUnit.equiv(0/0, 1/0), false, "NaN, Infinity"); // Nan VS Infinity
	equal(QUnit.equiv(1/0, 0/0), false, "NaN, Infinity"); // Nan VS Infinity
	equal(QUnit.equiv(0/0, null), false, "NaN");
	equal(QUnit.equiv(0/0, undefined), false, "NaN");
	equal(QUnit.equiv(0/0, 0), false, "NaN");
	equal(QUnit.equiv(0/0, false), false, "NaN");
	equal(QUnit.equiv(0/0, function () {}), false, "NaN");
	equal(QUnit.equiv(1/0, null), false, "NaN, Infinity");
	equal(QUnit.equiv(1/0, undefined), false, "NaN, Infinity");
	equal(QUnit.equiv(1/0, 0), false, "NaN, Infinity");
	equal(QUnit.equiv(1/0, 1), false, "NaN, Infinity");
	equal(QUnit.equiv(1/0, false), false, "NaN, Infinity");
	equal(QUnit.equiv(1/0, true), false, "NaN, Infinity");
	equal(QUnit.equiv(1/0, function () {}), false, "NaN, Infinity");

	equal(QUnit.equiv(0, 0), true, "number");
	equal(QUnit.equiv(0, 1), false, "number");
	equal(QUnit.equiv(1, 0), false, "number");
	equal(QUnit.equiv(1, 1), true, "number");
	equal(QUnit.equiv(1.1, 1.1), true, "number");
	equal(QUnit.equiv(0.0000005, 0.0000005), true, "number");
	equal(QUnit.equiv(0, ''), false, "number");
	equal(QUnit.equiv(0, '0'), false, "number");
	equal(QUnit.equiv(1, '1'), false, "number");
	equal(QUnit.equiv(0, false), false, "number");
	equal(QUnit.equiv(1, true), false, "number");

	equal(QUnit.equiv(true, true), true, "boolean");
	equal(QUnit.equiv(true, false), false, "boolean");
	equal(QUnit.equiv(false, true), false, "boolean");
	equal(QUnit.equiv(false, 0), false, "boolean");
	equal(QUnit.equiv(false, null), false, "boolean");
	equal(QUnit.equiv(false, undefined), false, "boolean");
	equal(QUnit.equiv(true, 1), false, "boolean");
	equal(QUnit.equiv(true, null), false, "boolean");
	equal(QUnit.equiv(true, undefined), false, "boolean");

	equal(QUnit.equiv('', ''), true, "string");
	equal(QUnit.equiv('a', 'a'), true, "string");
	equal(QUnit.equiv("foobar", "foobar"), true, "string");
	equal(QUnit.equiv("foobar", "foo"), false, "string");
	equal(QUnit.equiv('', 0), false, "string");
	equal(QUnit.equiv('', false), false, "string");
	equal(QUnit.equiv('', null), false, "string");
	equal(QUnit.equiv('', undefined), false, "string");

	// Rename for lint validation.
	// We know this is bad, we are asserting whether we can coop with bad code like this.
	var SafeNumber = Number, SafeString = String, SafeBoolean = Boolean, SafeObject = Object;

	// primitives vs. objects

	equal(QUnit.equiv(0, new SafeNumber()), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeNumber(), 0), true, "primitives vs. objects");
	equal(QUnit.equiv(1, new SafeNumber(1)), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeNumber(1), 1), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeNumber(0), 1), false, "primitives vs. objects");
	equal(QUnit.equiv(0, new SafeNumber(1)), false, "primitives vs. objects");

	equal(QUnit.equiv(new SafeString(), ""), true, "primitives vs. objects");
	equal(QUnit.equiv("", new SafeString()), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeString("My String"), "My String"), true, "primitives vs. objects");
	equal(QUnit.equiv("My String", new SafeString("My String")), true, "primitives vs. objects");
	equal(QUnit.equiv("Bad String", new SafeString("My String")), false, "primitives vs. objects");
	equal(QUnit.equiv(new SafeString("Bad String"), "My String"), false, "primitives vs. objects");

	equal(QUnit.equiv(false, new SafeBoolean()), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeBoolean(), false), true, "primitives vs. objects");
	equal(QUnit.equiv(true, new SafeBoolean(true)), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeBoolean(true), true), true, "primitives vs. objects");
	equal(QUnit.equiv(true, new SafeBoolean(1)), true, "primitives vs. objects");
	equal(QUnit.equiv(false, new SafeBoolean(false)), true, "primitives vs. objects");
	equal(QUnit.equiv(new SafeBoolean(false), false), true, "primitives vs. objects");
	equal(QUnit.equiv(false, new SafeBoolean(0)), true, "primitives vs. objects");
	equal(QUnit.equiv(true, new SafeBoolean(false)), false, "primitives vs. objects");
	equal(QUnit.equiv(new SafeBoolean(false), true), false, "primitives vs. objects");

	equal(QUnit.equiv(new SafeObject(), {}), true, "object literal vs. instantiation");
	equal(QUnit.equiv({}, new SafeObject()), true, "object literal vs. instantiation");
	equal(QUnit.equiv(new SafeObject(), {a:1}), false, "object literal vs. instantiation");
	equal(QUnit.equiv({a:1}, new SafeObject()), false, "object literal vs. instantiation");
	equal(QUnit.equiv({a:undefined}, new SafeObject()), false, "object literal vs. instantiation");
	equal(QUnit.equiv(new SafeObject(), {a:undefined}), false, "object literal vs. instantiation");
});

test("Objects Basics.", function() {
	equal(QUnit.equiv({}, {}), true);
	equal(QUnit.equiv({}, null), false);
	equal(QUnit.equiv({}, undefined), false);
	equal(QUnit.equiv({}, 0), false);
	equal(QUnit.equiv({}, false), false);

	// This test is a hard one, it is very important
	// REASONS:
	//      1) They are of the same type "object"
	//      2) [] instanceof Object is true
	//      3) Their properties are the same (doesn't exists)
	equal(QUnit.equiv({}, []), false);

	equal(QUnit.equiv({a:1}, {a:1}), true);
	equal(QUnit.equiv({a:1}, {a:"1"}), false);
	equal(QUnit.equiv({a:[]}, {a:[]}), true);
	equal(QUnit.equiv({a:{}}, {a:null}), false);
	equal(QUnit.equiv({a:1}, {}), false);
	equal(QUnit.equiv({}, {a:1}), false);

	// Hard ones
	equal(QUnit.equiv({a:undefined}, {}), false);
	equal(QUnit.equiv({}, {a:undefined}), false);
	equal(QUnit.equiv(
		{
			a: [{ bar: undefined }]
		},
		{
			a: [{ bat: undefined }]
		}
	), false);

	// Objects with no prototype, created via Object.create(null), are used e.g. as dictionaries.
	// Being able to test equivalence against object literals is quite useful.
	if (typeof Object.create === 'function') {
		equal(QUnit.equiv(Object.create(null), {}), true, "empty object without prototype VS empty object");

		var nonEmptyWithNoProto = Object.create(null);
		nonEmptyWithNoProto.foo = "bar";

		equal(QUnit.equiv(nonEmptyWithNoProto, { foo: "bar" }), true, "object without prototype VS object");
	}
});


test("Arrays Basics.", function() {

	equal(QUnit.equiv([], []), true);

	// May be a hard one, can invoke a crash at execution.
	// because their types are both "object" but null isn't
	// like a true object, it doesn't have any property at all.
	equal(QUnit.equiv([], null), false);

	equal(QUnit.equiv([], undefined), false);
	equal(QUnit.equiv([], false), false);
	equal(QUnit.equiv([], 0), false);
	equal(QUnit.equiv([], ""), false);

	// May be a hard one, but less hard
	// than {} with [] (note the order)
	equal(QUnit.equiv([], {}), false);

	equal(QUnit.equiv([null],[]), false);
	equal(QUnit.equiv([undefined],[]), false);
	equal(QUnit.equiv([],[null]), false);
	equal(QUnit.equiv([],[undefined]), false);
	equal(QUnit.equiv([null],[undefined]), false);
	equal(QUnit.equiv([[]],[[]]), true);
	equal(QUnit.equiv([[],[],[]],[[],[],[]]), true);
	equal(QUnit.equiv(
							[[],[],[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]],
							[[],[],[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]),
							true);
	equal(QUnit.equiv(
							[[],[],[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]],
							[[],[],[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]), // shorter
							false);
	equal(QUnit.equiv(
							[[],[],[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[{}]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]],
							[[],[],[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]), // deepest element not an array
							false);

	// same multidimensional
	equal(QUnit.equiv(
							[1,2,3,4,5,6,7,8,9, [
								1,2,3,4,5,6,7,8,9, [
									1,2,3,4,5,[
										[6,7,8,9, [
											[
												1,2,3,4,[
													2,3,4,[
														1,2,[
															1,2,3,4,[
																1,2,3,4,5,6,7,8,9,[
																	0
																],1,2,3,4,5,6,7,8,9
															],5,6,7,8,9
														],4,5,6,7,8,9
													],5,6,7,8,9
												],5,6,7
											]
										]
									]
								]
							]]],
							[1,2,3,4,5,6,7,8,9, [
								1,2,3,4,5,6,7,8,9, [
									1,2,3,4,5,[
										[6,7,8,9, [
											[
												1,2,3,4,[
													2,3,4,[
														1,2,[
															1,2,3,4,[
																1,2,3,4,5,6,7,8,9,[
																	0
																],1,2,3,4,5,6,7,8,9
															],5,6,7,8,9
														],4,5,6,7,8,9
													],5,6,7,8,9
												],5,6,7
											]
										]
									]
								]
							]]]),
							true, "Multidimensional");

	// different multidimensional
	equal(QUnit.equiv(
							[1,2,3,4,5,6,7,8,9, [
								1,2,3,4,5,6,7,8,9, [
									1,2,3,4,5,[
										[6,7,8,9, [
											[
												1,2,3,4,[
													2,3,4,[
														1,2,[
															1,2,3,4,[
																1,2,3,4,5,6,7,8,9,[
																	0
																],1,2,3,4,5,6,7,8,9
															],5,6,7,8,9
														],4,5,6,7,8,9
													],5,6,7,8,9
												],5,6,7
											]
										]
									]
								]
							]]],
							[1,2,3,4,5,6,7,8,9, [
								1,2,3,4,5,6,7,8,9, [
									1,2,3,4,5,[
										[6,7,8,9, [
											[
												1,2,3,4,[
													2,3,4,[
														1,2,[
															'1',2,3,4,[                 // string instead of number
																1,2,3,4,5,6,7,8,9,[
																	0
																],1,2,3,4,5,6,7,8,9
															],5,6,7,8,9
														],4,5,6,7,8,9
													],5,6,7,8,9
												],5,6,7
											]
										]
									]
								]
							]]]),
							false, "Multidimensional");

	// different multidimensional
	equal(QUnit.equiv(
							[1,2,3,4,5,6,7,8,9, [
								1,2,3,4,5,6,7,8,9, [
									1,2,3,4,5,[
										[6,7,8,9, [
											[
												1,2,3,4,[
													2,3,4,[
														1,2,[
															1,2,3,4,[
																1,2,3,4,5,6,7,8,9,[
																	0
																],1,2,3,4,5,6,7,8,9
															],5,6,7,8,9
														],4,5,6,7,8,9
													],5,6,7,8,9
												],5,6,7
											]
										]
									]
								]
							]]],
							[1,2,3,4,5,6,7,8,9, [
								1,2,3,4,5,6,7,8,9, [
									1,2,3,4,5,[
										[6,7,8,9, [
											[
												1,2,3,4,[
													2,3,[                   // missing an element (4)
														1,2,[
															1,2,3,4,[
																1,2,3,4,5,6,7,8,9,[
																	0
																],1,2,3,4,5,6,7,8,9
															],5,6,7,8,9
														],4,5,6,7,8,9
													],5,6,7,8,9
												],5,6,7
											]
										]
									]
								]
							]]]),
							false, "Multidimensional");
});

test("Functions.", function() {
	var f0 = function () {};
	var f1 = function () {};

	// f2 and f3 have the same code, formatted differently
	var f2 = function () {var i = 0;};
	var f3 = function () {
		/*jshint asi:true */
		var i = 0 // this comment and no semicoma as difference
	};

	equal(QUnit.equiv(function() {}, function() {}), false, "Anonymous functions"); // exact source code
	equal(QUnit.equiv(function() {}, function() {return true;}), false, "Anonymous functions");

	equal(QUnit.equiv(f0, f0), true, "Function references"); // same references
	equal(QUnit.equiv(f0, f1), false, "Function references"); // exact source code, different references
	equal(QUnit.equiv(f2, f3), false, "Function references"); // equivalent source code, different references
	equal(QUnit.equiv(f1, f2), false, "Function references"); // different source code, different references
	equal(QUnit.equiv(function() {}, true), false);
	equal(QUnit.equiv(function() {}, undefined), false);
	equal(QUnit.equiv(function() {}, null), false);
	equal(QUnit.equiv(function() {}, {}), false);
});


test("Date instances.", function() {
	// Date, we don't need to test Date.parse() because it returns a number.
	// Only test the Date instances by setting them a fix date.
	// The date use is midnight January 1, 1970

	var d1 = new Date();
	d1.setTime(0); // fix the date

	var d2 = new Date();
	d2.setTime(0); // fix the date

	var d3 = new Date(); // The very now

	// Anyway their types differs, just in case the code fails in the order in which it deals with date
	equal(QUnit.equiv(d1, 0), false); // d1.valueOf() returns 0, but d1 and 0 are different
	// test same values date and different instances equality
	equal(QUnit.equiv(d1, d2), true);
	// test different date and different instances difference
	equal(QUnit.equiv(d1, d3), false);
});


test("RegExp.", function() {
	// Must test cases that imply those traps:
	// var a = /./;
	// a instanceof Object;        // Oops
	// a instanceof RegExp;        // Oops
	// typeof a === "function";    // Oops, false in IE and Opera, true in FF and Safari ("object")

	// Tests same regex with same modifiers in different order
	var r = /foo/;
	var r5 = /foo/gim;
	var r6 = /foo/gmi;
	var r7 = /foo/igm;
	var r8 = /foo/img;
	var r9 = /foo/mig;
	var r10 = /foo/mgi;
	var ri1 = /foo/i;
	var ri2 = /foo/i;
	var rm1 = /foo/m;
	var rm2 = /foo/m;
	var rg1 = /foo/g;
	var rg2 = /foo/g;

	equal(QUnit.equiv(r5, r6), true, "Modifier order");
	equal(QUnit.equiv(r5, r7), true, "Modifier order");
	equal(QUnit.equiv(r5, r8), true, "Modifier order");
	equal(QUnit.equiv(r5, r9), true, "Modifier order");
	equal(QUnit.equiv(r5, r10), true, "Modifier order");
	equal(QUnit.equiv(r, r5), false, "Modifier");

	equal(QUnit.equiv(ri1, ri2), true, "Modifier");
	equal(QUnit.equiv(r, ri1), false, "Modifier");
	equal(QUnit.equiv(ri1, rm1), false, "Modifier");
	equal(QUnit.equiv(r, rm1), false, "Modifier");
	equal(QUnit.equiv(rm1, ri1), false, "Modifier");
	equal(QUnit.equiv(rm1, rm2), true, "Modifier");
	equal(QUnit.equiv(rg1, rm1), false, "Modifier");
	equal(QUnit.equiv(rm1, rg1), false, "Modifier");
	equal(QUnit.equiv(rg1, rg2), true, "Modifier");

	// Different regex, same modifiers
	var r11 = /[a-z]/gi;
	var r13 = /[0-9]/gi; // oops! different
	equal(QUnit.equiv(r11, r13), false, "Regex pattern");

	var r14 = /0/ig;
	var r15 = /"0"/ig; // oops! different
	equal(QUnit.equiv(r14, r15), false, "Regex pattern");

	var r1 = /[\n\r\u2028\u2029]/g;
	var r2 = /[\n\r\u2028\u2029]/g;
	var r3 = /[\n\r\u2028\u2028]/g; // differs from r1
	var r4 = /[\n\r\u2028\u2029]/;  // differs from r1

	equal(QUnit.equiv(r1, r2), true, "Regex pattern");
	equal(QUnit.equiv(r1, r3), false, "Regex pattern");
	equal(QUnit.equiv(r1, r4), false, "Regex pattern");

	// More complex regex
	var regex1 = "^[-_.a-z0-9]+@([-_a-z0-9]+\\.)+([A-Za-z][A-Za-z]|[A-Za-z][A-Za-z][A-Za-z])|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$";
	var regex2 = "^[-_.a-z0-9]+@([-_a-z0-9]+\\.)+([A-Za-z][A-Za-z]|[A-Za-z][A-Za-z][A-Za-z])|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$";
	// regex 3 is different: '.' not escaped
	var regex3 = "^[-_.a-z0-9]+@([-_a-z0-9]+.)+([A-Za-z][A-Za-z]|[A-Za-z][A-Za-z][A-Za-z])|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$";

	var r21 = new RegExp(regex1);
	var r22 = new RegExp(regex2);
	var r23 = new RegExp(regex3); // diff from r21, not same pattern
	var r23a = new RegExp(regex3, "gi"); // diff from r23, not same modifier
	var r24a = new RegExp(regex3, "ig"); // same as r23a

	equal(QUnit.equiv(r21, r22), true, "Complex Regex");
	equal(QUnit.equiv(r21, r23), false, "Complex Regex");
	equal(QUnit.equiv(r23, r23a), false, "Complex Regex");
	equal(QUnit.equiv(r23a, r24a), true, "Complex Regex");

	// typeof r1 is "function" in some browsers and "object" in others so we must cover this test
	var re = / /;
	equal(QUnit.equiv(re, function () {}), false, "Regex internal");
	equal(QUnit.equiv(re, {}), false, "Regex internal");
});


test("Complex Objects.", function() {

	function fn1() {
		return "fn1";
	}
	function fn2() {
		return "fn2";
	}

	// Try to invert the order of some properties to make sure it is covered.
	// It can failed when properties are compared between unsorted arrays.
	equal(QUnit.equiv(
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									s: [1,2,3],
									t: undefined,
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								q: [],
								p: 1/0,
								o: 99
							},
							l: undefined,
							m: null
						}
					},
					d: 0,
					i: true,
					h: "false"
				}
			},
			e: undefined,
			g: "",
			h: "h",
			f: {},
			i: []
		},
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				b: false,
				a: 3.14159,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									t: undefined,
									u: 0,
									s: [1,2,3],
									v: {
										w: {
											x: {
												z: null,
												y: "Yahoo!"
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: []
							},
							l: undefined,
							m: null
						}
					},
					i: true,
					h: "false"
				}
			},
			e: undefined,
			g: "",
			f: {},
			h: "h",
			i: []
		}
	), true);

	equal(QUnit.equiv(
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									//r: "r",   // different: missing a property
									s: [1,2,3],
									t: undefined,
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: []
							},
							l: undefined,
							m: null
						}
					},
					h: "false",
					i: true
				}
			},
			e: undefined,
			f: {},
			g: "",
			h: "h",
			i: []
		},
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									s: [1,2,3],
									t: undefined,
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: []
							},
							l: undefined,
							m: null
						}
					},
					h: "false",
					i: true
				}
			},
			e: undefined,
			f: {},
			g: "",
			h: "h",
			i: []
		}
	), false);

	equal(QUnit.equiv(
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									s: [1,2,3],
									t: undefined,
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: []
							},
							l: undefined,
							m: null
						}
					},
					h: "false",
					i: true
				}
			},
			e: undefined,
			f: {},
			g: "",
			h: "h",
			i: []
		},
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									s: [1,2,3],
									//t: undefined,                 // different: missing a property with an undefined value
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: []
							},
							l: undefined,
							m: null
						}
					},
					h: "false",
					i: true
				}
			},
			e: undefined,
			f: {},
			g: "",
			h: "h",
			i: []
		}
	), false);

	equal(QUnit.equiv(
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									s: [1,2,3],
									t: undefined,
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: []
							},
							l: undefined,
							m: null
						}
					},
					h: "false",
					i: true
				}
			},
			e: undefined,
			f: {},
			g: "",
			h: "h",
			i: []
		},
		{
			a: 1,
			b: null,
			c: [{}],
			d: {
				a: 3.14159,
				b: false,
				c: {
					d: 0,
					e: fn1,
					f: [[[]]],
					g: {
						j: {
							k: {
								n: {
									r: "r",
									s: [1,2,3],
									t: undefined,
									u: 0,
									v: {
										w: {
											x: {
												y: "Yahoo!",
												z: null
											}
										}
									}
								},
								o: 99,
								p: 1/0,
								q: {}           // different was []
							},
							l: undefined,
							m: null
						}
					},
					h: "false",
					i: true
				}
			},
			e: undefined,
			f: {},
			g: "",
			h: "h",
			i: []
		}
	), false);

	var same1 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,null,{}, [], [1,2,3]],
				bar: undefined
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±Ï‚"
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	var same2 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,null,{}, [], [1,2,3]],
				bar: undefined
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±Ï‚"
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	var diff1 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,null,{}, [], [1,2,3,4]], // different: 4 was add to the array
				bar: undefined
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±Ï‚"
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	var diff2 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,null,{}, [], [1,2,3]],
				newprop: undefined, // different: newprop was added
				bar: undefined
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±Ï‚"
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	var diff3 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,null,{}, [], [1,2,3]],
				bar: undefined
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±" // different: missing last char
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	var diff4 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,undefined,{}, [], [1,2,3]], // different: undefined instead of null
				bar: undefined
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±Ï‚"
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	var diff5 = {
		a: [
			"string", null, 0, "1", 1, {
				prop: null,
				foo: [1,2,null,{}, [], [1,2,3]],
				bat: undefined // different: property name not "bar"
			}, 3, "Hey!", "ÎšÎ¬Î½Îµ Ï€Î¬Î½Ï„Î± Î³Î½Ï‰ÏÎ¯Î¶Î¿Ï…Î¼Îµ Î±Ï‚ Ï„Ï‰Î½, Î¼Î·Ï‡Î±Î½Î®Ï‚ ÎµÏ€Î¹Î´Î¹ÏŒÏÎ¸Ï‰ÏƒÎ·Ï‚ ÎµÏ€Î¹Î´Î¹Î¿ÏÎ¸ÏŽÏƒÎµÎ¹Ï‚ ÏŽÏ‚ Î¼Î¹Î±. ÎšÎ»Ï€ Î±Ï‚"
		],
		unicode: "è€ æ±‰è¯ä¸å˜åœ¨ æ¸¯æ¾³å’Œæµ·å¤–çš„åŽäººåœˆä¸ è´µå·ž æˆ‘åŽ»äº†ä¹¦åº— çŽ°åœ¨å°šæœ‰äº‰",
		b: "b",
		c: fn1
	};

	equal(QUnit.equiv(same1, same2), true);
	equal(QUnit.equiv(same2, same1), true);
	equal(QUnit.equiv(same2, diff1), false);
	equal(QUnit.equiv(diff1, same2), false);

	equal(QUnit.equiv(same1, diff1), false);
	equal(QUnit.equiv(same1, diff2), false);
	equal(QUnit.equiv(same1, diff3), false);
	equal(QUnit.equiv(same1, diff3), false);
	equal(QUnit.equiv(same1, diff4), false);
	equal(QUnit.equiv(same1, diff5), false);
	equal(QUnit.equiv(diff5, diff1), false);
});


test("Complex Arrays.", function() {

	function fn() {
	}

	equal(QUnit.equiv(
				[1, 2, 3, true, {}, null, [
					{
						a: ["", '1', 0]
					},
					5, 6, 7
				], "foo"],
				[1, 2, 3, true, {}, null, [
					{
						a: ["", '1', 0]
					},
					5, 6, 7
				], "foo"]),
			true);

	equal(QUnit.equiv(
				[1, 2, 3, true, {}, null, [
					{
						a: ["", '1', 0]
					},
					5, 6, 7
				], "foo"],
				[1, 2, 3, true, {}, null, [
					{
						b: ["", '1', 0]         // not same property name
					},
					5, 6, 7
				], "foo"]),
			false);

	var a = [{
		b: fn,
		c: false,
		"do": "reserved word",
		"for": {
			ar: [3,5,9,"hey!", [], {
				ar: [1,[
					3,4,6,9, null, [], []
				]],
				e: fn,
				f: undefined
			}]
		},
		e: 0.43445
	}, 5, "string", 0, fn, false, null, undefined, 0, [
		4,5,6,7,8,9,11,22,33,44,55,"66", null, [], [[[[[3]]]], "3"], {}, 1/0
	], [], [[[], "foo", null, {
		n: 1/0,
		z: {
			a: [3,4,5,6,"yep!", undefined, undefined],
			b: {}
		}
	}, {}]]];

	equal(QUnit.equiv(a,
			[{
				b: fn,
				c: false,
				"do": "reserved word",
				"for": {
					ar: [3,5,9,"hey!", [], {
						ar: [1,[
							3,4,6,9, null, [], []
						]],
						e: fn,
						f: undefined
					}]
				},
				e: 0.43445
			}, 5, "string", 0, fn, false, null, undefined, 0, [
				4,5,6,7,8,9,11,22,33,44,55,"66", null, [], [[[[[3]]]], "3"], {}, 1/0
			], [], [[[], "foo", null, {
				n: 1/0,
				z: {
					a: [3,4,5,6,"yep!", undefined, undefined],
					b: {}
				}
			}, {}]]]), true);

	equal(QUnit.equiv(a,
			[{
				b: fn,
				c: false,
				"do": "reserved word",
				"for": {
					ar: [3,5,9,"hey!", [], {
						ar: [1,[
							3,4,6,9, null, [], []
						]],
						e: fn,
						f: undefined
					}]
				},
				e: 0.43445
			}, 5, "string", 0, fn, false, null, undefined, 0, [
				4,5,6,7,8,9,11,22,33,44,55,"66", null, [], [[[[[2]]]], "3"], {}, 1/0    // different: [[[[[2]]]]] instead of [[[[[3]]]]]
			], [], [[[], "foo", null, {
				n: 1/0,
				z: {
					a: [3,4,5,6,"yep!", undefined, undefined],
					b: {}
				}
			}, {}]]]), false);

	equal(QUnit.equiv(a,
			[{
				b: fn,
				c: false,
				"do": "reserved word",
				"for": {
					ar: [3,5,9,"hey!", [], {
						ar: [1,[
							3,4,6,9, null, [], []
						]],
						e: fn,
						f: undefined
					}]
				},
				e: 0.43445
			}, 5, "string", 0, fn, false, null, undefined, 0, [
				4,5,6,7,8,9,11,22,33,44,55,"66", null, [], [[[[[3]]]], "3"], {}, 1/0
			], [], [[[], "foo", null, {
				n: -1/0,                                                                // different, -Infinity instead of Infinity
				z: {
					a: [3,4,5,6,"yep!", undefined, undefined],
					b: {}
				}
			}, {}]]]), false);

	equal(QUnit.equiv(a,
			[{
				b: fn,
				c: false,
				"do": "reserved word",
				"for": {
					ar: [3,5,9,"hey!", [], {
						ar: [1,[
							3,4,6,9, null, [], []
						]],
						e: fn,
						f: undefined
					}]
				},
				e: 0.43445
			}, 5, "string", 0, fn, false, null, undefined, 0, [
				4,5,6,7,8,9,11,22,33,44,55,"66", null, [], [[[[[3]]]], "3"], {}, 1/0
			], [], [[[], "foo", {                                                       // different: null is missing
				n: 1/0,
				z: {
					a: [3,4,5,6,"yep!", undefined, undefined],
					b: {}
				}
			}, {}]]]), false);

	equal(QUnit.equiv(a,
			[{
				b: fn,
				c: false,
				"do": "reserved word",
				"for": {
					ar: [3,5,9,"hey!", [], {
						ar: [1,[
							3,4,6,9, null, [], []
						]],
						e: fn
																				// different: missing property f: undefined
					}]
				},
				e: 0.43445
			}, 5, "string", 0, fn, false, null, undefined, 0, [
				4,5,6,7,8,9,11,22,33,44,55,"66", null, [], [[[[[3]]]], "3"], {}, 1/0
			], [], [[[], "foo", null, {
				n: 1/0,
				z: {
					a: [3,4,5,6,"yep!", undefined, undefined],
					b: {}
				}
			}, {}]]]), false);
});


test("Prototypal inheritance", function() {
	function Gizmo(id) {
		this.id = id;
	}

	function Hoozit(id) {
		this.id = id;
	}
	Hoozit.prototype = new Gizmo();

	var gizmo = new Gizmo("ok");
	var hoozit = new Hoozit("ok");

	// Try this test many times after test on instances that hold function
	// to make sure that our code does not mess with last object constructor memoization.
	equal(QUnit.equiv(function () {}, function () {}), false);

	// Hoozit inherit from Gizmo
	// hoozit instanceof Hoozit; // true
	// hoozit instanceof Gizmo; // true
	equal(QUnit.equiv(hoozit, gizmo), true);

	Gizmo.prototype.bar = true; // not a function just in case we skip them

	// Hoozit inherit from Gizmo
	// They are equivalent
	equal(QUnit.equiv(hoozit, gizmo), true);

	// Make sure this is still true !important
	// The reason for this is that I forgot to reset the last
	// caller to where it were called from.
	equal(QUnit.equiv(function () {}, function () {}), false);

	// Make sure this is still true !important
	equal(QUnit.equiv(hoozit, gizmo), true);

	Hoozit.prototype.foo = true; // not a function just in case we skip them

	// Gizmo does not inherit from Hoozit
	// gizmo instanceof Gizmo; // true
	// gizmo instanceof Hoozit; // false
	// They are not equivalent
	equal(QUnit.equiv(hoozit, gizmo), false);

	// Make sure this is still true !important
	equal(QUnit.equiv(function () {}, function () {}), false);
});


test("Instances", function() {
	function A() {}
	var a1 = new A();
	var a2 = new A();

	function B() {
		this.fn = function () {};
	}
	var b1 = new B();
	var b2 = new B();

	equal(QUnit.equiv(a1, a2), true, "Same property, same constructor");

	// b1.fn and b2.fn are functions but they are different references
	// But we decided to skip function for instances.
	equal(QUnit.equiv(b1, b2), true, "Same property, same constructor");
	equal(QUnit.equiv(a1, b1), false, "Same properties but different constructor"); // failed

	function Car(year) {
		var privateVar = 0;
		this.year = year;
		this.isOld = function() {
			return year > 10;
		};
	}

	function Human(year) {
		var privateVar = 1;
		this.year = year;
		this.isOld = function() {
			return year > 80;
		};
	}

	var car = new Car(30);
	var carSame = new Car(30);
	var carDiff = new Car(10);
	var human = new Human(30);

	var diff = {
		year: 30
	};

	var same = {
		year: 30,
		isOld: function () {}
	};

	equal(QUnit.equiv(car, car), true);
	equal(QUnit.equiv(car, carDiff), false);
	equal(QUnit.equiv(car, carSame), true);
	equal(QUnit.equiv(car, human), false);
});


test("Complex Instances Nesting (with function value in literals and/or in nested instances)", function() {
	function A(fn) {
		this.a = {};
		this.fn = fn;
		this.b = {a: []};
		this.o = {};
		this.fn1 = fn;
	}
	function B(fn) {
		this.fn = fn;
		this.fn1 = function () {};
		this.a = new A(function () {});
	}

	function fnOutside() {
	}

	function C(fn) {
		function fnInside() {
		}
		this.x = 10;
		this.fn = fn;
		this.fn1 = function () {};
		this.fn2 = fnInside;
		this.fn3 = {
			a: true,
			b: fnOutside // ok make reference to a function in all instances scope
		};
		this.o1 = {};

		// This function will be ignored.
		// Even if it is not visible for all instances (e.g. locked in a closures),
		// it is from a  property that makes part of an instance (e.g. from the C constructor)
		this.b1 = new B(function () {});
		this.b2 = new B({
			x: {
				b2: new B(function() {})
			}
		});
	}

	function D(fn) {
		function fnInside() {
		}
		this.x = 10;
		this.fn = fn;
		this.fn1 = function () {};
		this.fn2 = fnInside;
		this.fn3 = {
			a: true,
			b: fnOutside, // ok make reference to a function in all instances scope

			// This function won't be ingored.
			// It isn't visible for all C insances
			// and it is not in a property of an instance. (in an Object instances e.g. the object literal)
			c: fnInside
		};
		this.o1 = {};

		// This function will be ignored.
		// Even if it is not visible for all instances (e.g. locked in a closures),
		// it is from a  property that makes part of an instance (e.g. from the C constructor)
		this.b1 = new B(function () {});
		this.b2 = new B({
			x: {
				b2: new B(function() {})
			}
		});
	}

	function E(fn) {
		function fnInside() {
		}
		this.x = 10;
		this.fn = fn;
		this.fn1 = function () {};
		this.fn2 = fnInside;
		this.fn3 = {
			a: true,
			b: fnOutside // ok make reference to a function in all instances scope
		};
		this.o1 = {};

		// This function will be ignored.
		// Even if it is not visible for all instances (e.g. locked in a closures),
		// it is from a  property that makes part of an instance (e.g. from the C constructor)
		this.b1 = new B(function () {});
		this.b2 = new B({
			x: {
				b1: new B({a: function() {}}),
				b2: new B(function() {})
			}
		});
	}


	var a1 = new A(function () {});
	var a2 = new A(function () {});
	equal(QUnit.equiv(a1, a2), true);

	equal(QUnit.equiv(a1, a2), true); // different instances

	var b1 = new B(function () {});
	var b2 = new B(function () {});
	equal(QUnit.equiv(b1, b2), true);

	var c1 = new C(function () {});
	var c2 = new C(function () {});
	equal(QUnit.equiv(c1, c2), true);

	var d1 = new D(function () {});
	var d2 = new D(function () {});
	equal(QUnit.equiv(d1, d2), false);

	var e1 = new E(function () {});
	var e2 = new E(function () {});
	equal(QUnit.equiv(e1, e2), false);

});


test('object with references to self wont loop', function() {
	var circularA = {
		abc:null
	}, circularB = {
		abc:null
	};
	circularA.abc = circularA;
	circularB.abc = circularB;
	equal(QUnit.equiv(circularA, circularB), true, "Should not repeat test on object (ambigous test)");

	circularA.def = 1;
	circularB.def = 1;
	equal(QUnit.equiv(circularA, circularB), true, "Should not repeat test on object (ambigous test)");

	circularA.def = 1;
	circularB.def = 0;
	equal(QUnit.equiv(circularA, circularB), false, "Should not repeat test on object (unambigous test)");
});

test('array with references to self wont loop', function() {
	var circularA = [],
		circularB = [];
	circularA.push(circularA);
	circularB.push(circularB);
	equal(QUnit.equiv(circularA, circularB), true, "Should not repeat test on array (ambigous test)");

	circularA.push( 'abc' );
	circularB.push( 'abc' );
	equal(QUnit.equiv(circularA, circularB), true, "Should not repeat test on array (ambigous test)");

	circularA.push( 'hello' );
	circularB.push( 'goodbye' );
	equal(QUnit.equiv(circularA, circularB), false, "Should not repeat test on array (unambigous test)");
});

test('mixed object/array with references to self wont loop', function() {
	var circularA = [{abc:null}],
		circularB = [{abc:null}];
	circularA[0].abc = circularA;
	circularB[0].abc = circularB;

	circularA.push(circularA);
	circularB.push(circularB);
	equal(QUnit.equiv(circularA, circularB), true, "Should not repeat test on object/array (ambigous test)");

	circularA[0].def = 1;
	circularB[0].def = 1;
	equal(QUnit.equiv(circularA, circularB), true, "Should not repeat test on object/array (ambigous test)");

	circularA[0].def = 1;
	circularB[0].def = 0;
	equal(QUnit.equiv(circularA, circularB), false, "Should not repeat test on object/array (unambigous test)");
});

test('compare self-referent to tree', function () {
	var temp,
		circularA = [0],
		treeA = [0, null],
		circularO = {},
		treeO = {
			o: null
		};

	circularA[1] = circularA;
	circularO.o = circularO;

	equal(QUnit.equiv(circularA, treeA), false, "Array: Should not consider circular equal to tree");
	equal(QUnit.equiv(circularO, treeO), false, "Object: Should not consider circular equal to tree");

	temp = [ 0, circularA ];
	equal(QUnit.equiv(circularA, temp), true, "Array: Reference is circular for one, but equal on other");
	equal(QUnit.equiv(temp, circularA), true, "Array: Reference is circular for one, but equal on other");

	temp = {
		o: circularO
	};
	equal(QUnit.equiv(circularO, temp), true, "Object: Reference is circular for one, but equal on other");
	equal(QUnit.equiv(temp, circularO), true, "Object: Reference is circular for one, but equal on other");
});

test("Test that must be done at the end because they extend some primitive's prototype", function() {
	// Try that a function looks like our regular expression.
	// This tests if we check that a and b are really both instance of RegExp
	Function.prototype.global = true;
	Function.prototype.multiline = true;
	Function.prototype.ignoreCase = false;
	Function.prototype.source = "my regex";
	var re = /my regex/gm;
	equal(QUnit.equiv(re, function () {}), false, "A function that looks that a regex isn't a regex");
	// This test will ensures it works in both ways, and ALSO especially that we can make differences
	// between RegExp and Function constructor because typeof on a RegExpt instance is "function"
	equal(QUnit.equiv(function () {}, re), false, "Same conversely, but ensures that function and regexp are distinct because their constructor are different");
});
