X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/0494b8d9b9bb03ab6c22b34dae81261e3cd7e3e6..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/src/core/test/unit/spec/lang/Array.js

diff --git a/src/core/test/unit/spec/lang/Array.js b/src/core/test/unit/spec/lang/Array.js
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+++ b/src/core/test/unit/spec/lang/Array.js
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+describe("Ext.Array", function() {
+    var array;
+
+    describe("Ext.Array.indexOf", function() {
+        var indexOf = Ext.Array.indexOf;
+
+        describe("without from argument", function() {
+            beforeEach(function() {
+                array = [1, 2, 3, 4, 5, 6];
+            });
+
+            afterEach(function(){
+                array = null;
+            });
+
+            it("should always return -1 on an empty array", function(){
+                expect(indexOf([], 1)).toEqual(-1);
+            });
+
+            it("should return -1 if them it doesn't exist", function() {
+                expect(indexOf(array, 7)).toEqual(-1);
+            });
+
+            it("should return the matching index if found", function() {
+                expect(indexOf(array, 4)).toEqual(3);
+            });
+
+            it("should return the first matching index if found", function(){
+                array.push(1);
+                expect(indexOf(array, 1)).toEqual(0);
+            });
+        });
+
+        describe("with from argument", function() {
+            beforeEach(function() {
+                array = [1, 2, 3, 4, 5, 6, 7];
+            });
+
+            it("should return the matched index if found", function() {
+                expect(indexOf(array, 5, 3)).toEqual(4);
+            });
+
+            it("should return the matched index if found", function() {
+                expect(indexOf(array, 5, 4)).toEqual(4);
+            });
+
+            it("should return -1 if the item doesn't exist after the passed from value", function() {
+                expect(indexOf(array, 5, 5)).toEqual(-1);
+            });
+        });
+
+    });
+    describe("removing items", function() {
+        var remove = Ext.Array.remove,
+            myArray;
+
+        it("should do nothing when removing from an empty array", function() {
+            myArray = [];
+
+            expect(function() {
+                remove(myArray, 1);
+            }).not.toRaiseExtError();
+
+            expect(myArray).toEqual([]);
+        });
+
+        describe("when removing an item inside an array", function() {
+            beforeEach(function() {
+                myArray = [1, 2, 3, 4, 5];
+
+                remove(myArray, 1);
+            });
+
+            it("should remove the item", function() {
+                expect(myArray).toEqual([2, 3, 4, 5]);
+            });
+
+            it("should update the index of the following items", function() {
+                expect(myArray[1]).toEqual(3);
+                expect(myArray[2]).toEqual(4);
+                expect(myArray[3]).toEqual(5);
+            });
+
+            it("should remove only using a strict type check", function(){
+                remove(myArray, '2');
+                expect(myArray).toEqual([2, 3, 4, 5]);
+            });
+        });
+    });
+
+    describe("contains", function() {
+        var contains = Ext.Array.contains;
+
+        it("should always return false with an empty array", function(){
+            expect(contains([], 1)).toBe(false);
+        });
+
+        it("should return false if an item does not exist in the array", function() {
+            expect(contains([1, 2, 3], 10)).toBe(false);
+        });
+
+        it("should return true if an item exists in the array", function() {
+            expect(contains([8, 9, 10], 10)).toBe(true);
+        });
+
+        it("should only match with strict type checking", function(){
+            expect(contains([1, 2, 3, 4, 5], '1')).toBe(false);
+        });
+    });
+
+    describe("include", function(){
+        var include = Ext.Array.include,
+            myArray;
+
+        it("should always add to an empty array", function(){
+            myArray = [];
+            include(myArray, 1);
+            expect(myArray).toEqual([1]);
+        });
+
+        it("should add the item if it doesn't exist", function(){
+            myArray = [1];
+            include(myArray, 2);
+            expect(myArray).toEqual([1, 2]);
+        });
+
+        it("should always add to the end of the array", function(){
+            myArray = [9, 8, 7, 6];
+            include(myArray, 10);
+            expect(myArray).toEqual([9, 8, 7, 6, 10]);
+        });
+
+        it("should match using strict type checking", function(){
+            myArray = ['1'];
+            include(myArray, 1);
+            expect(myArray).toEqual(['1', 1]);
+        });
+
+        it("should not modify the array if the value exists", function(){
+            myArray = [4, 5, 6];
+            include(myArray, 7);
+            expect(myArray).toEqual([4, 5, 6, 7]);
+        });
+    });
+
+    describe("clone", function(){
+        var clone = Ext.Array.clone;
+
+        it("should clone an empty array to be empty", function(){
+            expect(clone([])).toEqual([]);
+        });
+
+        it("should clone an array with items", function(){
+            expect(clone([1, 3, 5])).toEqual([1, 3, 5]);
+        });
+
+        it("should create a new reference", function(){
+            var arr = [1, 2, 3];
+            expect(clone(arr)).not.toBe(arr);
+        });
+
+        it("should do a shallow clone", function(){
+            var o = {},
+                arr = [o],
+                result;
+
+            result = clone(arr);
+            expect(result[0]).toBe(o);
+        });
+    });
+
+    describe("clean", function(){
+        var clean = Ext.Array.clean;
+
+        it("should return an empty array if cleaning an empty array", function(){
+            expect(clean([])).toEqual([]);
+        });
+
+        it("should remove undefined values", function(){
+            expect(clean([undefined])).toEqual([]);
+        });
+
+        it("should remove null values", function(){
+            expect(clean([null])).toEqual([]);
+        });
+
+        it("should remove empty strings", function(){
+            expect(clean([''])).toEqual([]);
+        });
+
+        it("should remove empty arrays", function(){
+            expect(clean([[]])).toEqual([]);
+        });
+
+        it("should remove a mixture of empty values", function(){
+            expect(clean([null, undefined, '', []])).toEqual([]);
+        });
+
+        it("should remove all occurrences of empty values", function(){
+            expect(clean([null, null, null, undefined, '', '', '', undefined])).toEqual([]);
+        });
+
+        it("should leave non empty values untouched", function(){
+            expect(clean([1, 2, 3])).toEqual([1, 2, 3]);
+        });
+
+        it("should remove only the empty values", function(){
+            expect(clean([undefined, null, 1, null, 2])).toEqual([1, 2]);
+        });
+
+        it("should preserve order on removal", function(){
+            expect(clean([1, null, 2, null, null, null, 3, undefined, '', '', 4])).toEqual([1, 2, 3, 4]);
+        });
+    });
+
+    describe("unique", function(){
+        var unique = Ext.Array.unique;
+
+        it("should return an empty array if run on an empty array", function(){
+            expect(unique([])).toEqual([]);
+        });
+
+        it("should return a new reference", function(){
+            var arr = [1, 2, 3];
+            expect(unique(arr)).not.toBe(arr);
+        });
+
+        it("should return a copy if all items are unique", function(){
+            expect(unique([6, 7, 8])).toEqual([6, 7, 8]);
+        });
+
+        it("should only use strict typing to match", function(){
+            expect(unique([1, '1'])).toEqual([1, '1']);
+        });
+
+        it("should preserve the order when removing", function(){
+            expect(unique([1, 2, 1, 3, 1, 1, 1, 6, 5, 1])).toEqual([1, 2, 3, 6, 5]);
+        });
+    });
+
+    describe("map", function(){
+        var map = Ext.Array.map,
+            emptyFn = function(v){
+                return v;
+            };
+
+        it("should return an empty array if run on an empty array", function(){
+            expect(map([], function(){})).toEqual([]);
+        });
+
+        it("should return a new reference", function(){
+            var arr = [1, 2];
+            expect(map(arr, emptyFn)).not.toBe(arr);
+        });
+
+        it("should execute the function for each item in the array", function(){
+            expect(map([1, 2, 3, 4, 5], function(v){
+                return v * 2;
+            })).toEqual([2, 4, 6, 8, 10]);
+        });
+
+        it("should get called with the correct scope", function(){
+            var scope = {},
+                realScope;
+            map([1, 2, 3, 4, 5], function(){
+                realScope = this;
+            }, scope);
+            expect(realScope).toBe(scope);
+        });
+
+        it("should get called with the argument, index and array", function(){
+            var item,
+                index,
+                arr,
+                data = [1];
+
+            map(data, function(){
+                item = arguments[0];
+                index = arguments[1];
+                arr = arguments[2];
+            });
+            expect(item).toEqual(1);
+            expect(index).toEqual(0);
+            expect(arr).toBe(data);
+        });
+    });
+
+    describe("from", function(){
+        var from = Ext.Array.from;
+
+        it("should return an empty array for an undefined value", function(){
+            expect(from(undefined)).toEqual([]);
+        });
+
+        it("should return an empty array for a null value", function(){
+            expect(from(null)).toEqual([]);
+        });
+
+        it("should convert an array", function(){
+            expect(from([1, 2, 3])).toEqual([1, 2, 3]);
+        });
+
+        it("should preserve the order", function(){
+            expect(from(['a', 'string', 'here'])).toEqual(['a', 'string', 'here']);
+        });
+
+        it("should convert a single value to an array", function(){
+            expect(from(true)).toEqual([true]);
+            expect(from(700)).toEqual([700]);
+        });
+
+        it("should convert arguments to an array", function(){
+            var test, fn = function(){
+                test = from(arguments);
+            };
+            fn(1, 2, 3);
+            expect(test instanceof Array).toBeTruthy();
+            expect(test).toEqual([1, 2, 3]);
+        });
+
+        it("should convert a DOM collection to an array", function(){
+            var ct = document.body.appendChild(document.createElement('div')),
+                node1 = ct.appendChild(document.createElement('div')),
+                node2 = ct.appendChild(document.createElement('div')),
+                node3 = ct.appendChild(document.createElement('div')),
+                collection = ct.getElementsByTagName('div'),
+                result = from(collection);
+
+            expect(result instanceof Array).toBeTruthy();
+            expect(result).toEqual([node1, node2, node3]);
+            document.body.removeChild(ct);
+
+        });
+    });
+
+    describe("toArray", function(){
+        var toArray = Ext.Array.toArray;
+
+        it("should convert an array", function(){
+            expect(toArray([1, 2, 3, 4])).toEqual([1, 2, 3, 4]);
+        });
+
+        it("should convert a string", function(){
+            expect(toArray('12345')).toEqual(['1', '2', '3', '4', '5']);
+        });
+
+        it("should create a new reference", function(){
+            var arr = [6, 7, 8];
+            expect(toArray(arr)).not.toBe(arr);
+        });
+
+        it("should convert arguments", function(){
+            var test, fn = function(){
+                test = toArray(arguments);
+            };
+            fn(-1, -2, -3);
+            expect(test instanceof Array).toBeTruthy();
+            expect(test).toEqual([-1, -2, -3]);
+        });
+
+        it("should convert a DOM collection", function(){
+            var ct = document.body.appendChild(document.createElement('div')),
+                node1 = ct.appendChild(document.createElement('div')),
+                node2 = ct.appendChild(document.createElement('div')),
+                node3 = ct.appendChild(document.createElement('div')),
+                collection = ct.getElementsByTagName('div'),
+                result = toArray(collection);
+
+            expect(result instanceof Array).toBeTruthy();
+            expect(result).toEqual([node1, node2, node3]);
+            document.body.removeChild(ct);
+        });
+
+        describe("start/end parameters", function(){
+            it("should default to whole of the array", function(){
+                expect(toArray([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
+            });
+
+            it("should work with only the start parameter specified", function(){
+                expect(toArray([1, 2, 3, 4, 5, 6], 2)).toEqual([3, 4, 5, 6]);
+            });
+
+            it("should work with only the end parameter specified", function(){
+                expect(toArray([1, 2, 3, 4, 5, 6], null, 4)).toEqual([1, 2, 3, 4]);
+            });
+
+            it("should work with both params specified", function(){
+                expect(toArray([1, 2, 3, 4, 5, 6], 2, 4)).toEqual([3, 4]);
+            });
+
+            it("should work with nagative end", function(){
+                expect(toArray([1, 2, 3, 4, 5, 6], 2, -1)).toEqual([3, 4, 5]);
+            });
+        });
+    });
+
+    describe("pluck", function(){
+        var pluck = Ext.Array.pluck;
+        it("should return an empty array when an empty array is passed", function(){
+            expect(pluck([], 'prop')).toEqual([]);
+        });
+
+        it("should pull the properties from objects in the array", function(){
+            var arr = [{prop: 1}, {prop: 2}, {prop: 3}];
+            expect(pluck(arr, 'prop')).toEqual([1, 2, 3]);
+        });
+
+        it("should return a new reference", function(){
+            var arr = [{prop: 1}, {prop: 2}, {prop: 3}];
+            expect(pluck(arr, 'prop')).not.toBe(arr);
+        });
+
+        it("should work on a DOM collection", function(){
+            var ct = document.body.appendChild(document.createElement('div')),
+                i = 0,
+                node;
+
+            for(; i < 5; ++i) {
+                node = ct.appendChild(document.createElement('div'));
+                node.className = 'node' + i;
+            }
+
+            expect(pluck(ct.getElementsByTagName('div'), 'className')).toEqual(['node0', 'node1', 'node2', 'node3', 'node4']);
+            document.body.removeChild(ct);
+        });
+    });
+
+    describe("filter", function(){
+        var filter = Ext.Array.filter,
+            trueFn = function(){
+                return true;
+            };
+
+        it("should return an empty array if filtering an empty array", function(){
+            expect(filter([], trueFn)).toEqual([]);
+        });
+
+        it("should create a new reference", function(){
+            var arr = [1, 2, 3];
+            expect(filter(arr, trueFn)).not.toBe(arr);
+        });
+
+        it("should add items if the filter function returns true", function(){
+            expect(filter([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(val){
+                return val % 2 == 0;
+            })).toEqual([2, 4, 6, 8, 10]);
+        });
+
+        it("should add items if the filter function returns a truthy value", function(){
+            expect(filter([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(val){
+                if (val % 2 == 0) {
+                    return 1;
+                }
+            })).toEqual([2, 4, 6, 8, 10]);
+        });
+
+        it("should not add items if the filter function returns a falsy value", function(){
+            expect(filter([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(val){
+                return 0;
+            })).toEqual([]);
+        });
+
+        it("should pass the correct parameters", function(){
+            var values = [],
+                indexes = [],
+                arrs = [],
+                data = [1, 2, 3];
+
+            filter([1, 2, 3], function(val, index, arr){
+                values.push(val);
+                indexes.push(index);
+                arrs.push(arr);
+            });
+
+            expect(values).toEqual([1, 2, 3]);
+            expect(indexes).toEqual([0, 1, 2]);
+            expect(arrs).toEqual([data, data, data]);
+        });
+
+        it("should do a shallow copy", function(){
+            var o1 = {prop: 1},
+                o2 = {prop: 2},
+                o3 = {prop: 3};
+
+            expect(filter([o1, o2, o3], trueFn)).toEqual([o1, o2, o3]);
+        });
+
+        it("should execute in scope when passed", function(){
+            var scope = {},
+                actual;
+
+            expect(filter([1, 2, 3], function(){
+                actual = this;
+            }, scope));
+            expect(actual).toBe(scope);
+        });
+    });
+
+    describe("forEach", function(){
+        var forEach = Ext.Array.forEach;
+
+        it("should not execute on an empty array", function(){
+            var count = 0;
+            forEach([], function(){
+                ++count;
+            });
+            expect(count).toEqual(0);
+        });
+
+        it("should execute for each item in the array", function(){
+            var count = 0;
+            forEach([1, 2, 3, 4, 5], function(){
+                ++count;
+            });
+            expect(count).toEqual(5);
+        });
+
+        it("should execute in the appropriate scope", function(){
+            var scope = {},
+                actual;
+
+            forEach([1, 2, 3], function(){
+                actual = this;
+            }, scope);
+
+            expect(actual).toBe(scope);
+        });
+
+        it("should pass the appropriate params to the callback", function(){
+            var values = [],
+                indexes = [],
+                arrs = [],
+                data = [1, 2, 3];
+
+            forEach(data, function(val, index, arr){
+                values.push(val);
+                indexes.push(index);
+                arrs.push(arr);
+            });
+
+            expect(values).toEqual([1, 2, 3]);
+            expect(indexes).toEqual([0, 1, 2]);
+            expect(arrs).toEqual([data, data, data]);
+        });
+    });
+
+    describe("each", function(){
+        var each = Ext.Array.each;
+
+        describe("return values", function(){
+            xit("should return 0 if the passed value is empty", function(){
+                expect(each([])).toEqual(0);
+            });
+
+            it("should return the stopping index if iteration is halted", function(){
+                expect(each([1, 2, 3], function(val){
+                    return val != 2;
+                })).toEqual(1);
+            });
+
+            it("should return true if iteration is not stopped", function(){
+                expect(each([4, 5, 6], function(){
+                    return true;
+                })).toBeTruthy();
+            });
+        });
+
+        describe("scope/parameters", function(){
+            it("should execute in the specified scope", function(){
+                var scope = {},
+                    actual;
+
+                each([1, 2, 3], function(){
+                    actual = this;
+                }, scope);
+                expect(actual).toBe(scope);
+            });
+
+            it("should pass the item, index and array", function(){
+                var values = [],
+                    indexes = [],
+                    arrs = [],
+                    data = [1, 2, 3];
+
+                each(data, function(val, index, arr){
+                    values.push(val);
+                    indexes.push(index);
+                    arrs.push(arr);
+                });
+
+                expect(values).toEqual([1, 2, 3]);
+                expect(indexes).toEqual([0, 1, 2]);
+                expect(arrs).toEqual([data, data, data]);
+            });
+        });
+
+        describe("stopping iteration", function(){
+            it("should not stop iteration by default", function(){
+                var count = 0;
+                each([1, 2, 3, 4, 5], function(){
+                    ++count;
+                });
+                expect(count).toEqual(5);
+            });
+
+            it("should not stop unless an explicit false is returned", function(){
+                var count = 0;
+                each([1, 2, 3, 4, 5], function(){
+                    ++count;
+                    return null;
+                });
+                expect(count).toEqual(5);
+            });
+
+            it("should stop immediately if false is returned", function(){
+                var count = 0;
+                each([1, 2, 3, 4, 5], function(v){
+                    ++count;
+                    return v != 2;
+                });
+                expect(count).toEqual(2);
+            });
+        });
+
+        describe("other collection types", function(){
+            it("should iterate arguments", function(){
+                var test, values = [], fn = function(){
+                    test = each(arguments, function(val){
+                        values.push(val)
+                    });
+                };
+                fn(1, 2, 3);
+                expect(values).toEqual([1, 2, 3]);
+            });
+
+            it("should iterate over a DOM collection", function(){
+                var ct = document.body.appendChild(document.createElement('div')),
+                    node1 = ct.appendChild(document.createElement('div')),
+                    node2 = ct.appendChild(document.createElement('div')),
+                    node3 = ct.appendChild(document.createElement('div')),
+                    collection = ct.getElementsByTagName('div'),
+                    result = [];
+
+                each(collection, function(node){
+                    result.push(node.tagName.toLowerCase());
+                });
+
+                expect(result).toEqual(['div', 'div', 'div']);
+                document.body.removeChild(ct);
+            });
+        });
+
+        it("should iterate once over a single, non empty value", function(){
+            var count = 0;
+            each('string', function(){
+                ++count;
+            });
+            expect(count).toEqual(1);
+        });
+    });
+
+    describe("every", function(){
+        var every = Ext.Array.every;
+
+        describe("scope/params", function(){
+            it("should execute in the specified scope", function(){
+                var scope = {},
+                    actual;
+
+                every([1, 2, 3], function(){
+                    actual = this;
+                }, scope);
+                expect(actual).toBe(scope);
+            });
+
+            it("should pass the item, index and array", function(){
+                var values = [],
+                    indexes = [],
+                    arrs = [],
+                    data = [1, 2, 3];
+
+                every(data, function(val, index, arr){
+                    values.push(val);
+                    indexes.push(index);
+                    arrs.push(arr);
+                    return true;
+                });
+
+                expect(values).toEqual([1, 2, 3]);
+                expect(indexes).toEqual([0, 1, 2]);
+                expect(arrs).toEqual([data, data, data]);
+            });
+        });
+
+        it("should return true on an empty array", function(){
+            expect(every([], function(){})).toBeTruthy();
+        });
+
+        it("should throw an exception if no fn is passed", function(){
+            expect(function(){
+                every([1, 2, 3]);
+            }).toRaiseExtError();
+        });
+
+        it("should stop as soon as a false value is found", function(){
+            var count = 0,
+                result;
+
+            result = every([true, true, false, true], function(v){
+                ++count;
+                return v;
+            });
+            expect(count).toEqual(3);
+            expect(result).toBeFalsy();
+        });
+
+        it("should return true if all values match the function", function(){
+            expect(every([1, 2, 3, 4, 5, 6, 7, 8, 9], function(v){
+                return v < 10;
+            })).toBeTruthy();
+        });
+    });
+
+    describe("some", function(){
+        var some = Ext.Array.some;
+
+        describe("scope/params", function(){
+            it("should execute in the specified scope", function(){
+                var scope = {},
+                    actual;
+
+                some([1, 2, 3], function(){
+                    actual = this;
+                }, scope);
+                expect(actual).toBe(scope);
+            });
+
+            it("should pass the item, index and array", function(){
+                var values = [],
+                    indexes = [],
+                    arrs = [],
+                    data = [1, 2, 3];
+
+                some(data, function(val, index, arr){
+                    values.push(val);
+                    indexes.push(index);
+                    arrs.push(arr);
+                    return true;
+                });
+
+                expect(values).toEqual([1]);
+                expect(indexes).toEqual([0]);
+                expect(arrs).toEqual([data]);
+            });
+        });
+
+        it("should return false on an empty array", function(){
+            expect(some([], function(){})).toBeFalsy();
+        });
+
+        it("should throw an exception if no fn is passed", function(){
+            expect(function(){
+                some([1, 2, 3]);
+            }).toRaiseExtError();
+        });
+
+        it("should stop as soon as a matching value is found", function(){
+            var count = 0,
+                result;
+
+            result = some([1, 2, 3, 4], function(val){
+                ++count;
+                return val == 3;
+            });
+            expect(count).toEqual(3);
+            expect(result).toBeTruthy();
+        });
+
+        it("should return false if nothing matches the matcher function", function(){
+            var count = 0,
+                result;
+
+            result = some([1, 2, 3, 4, 5, 6, 7, 8, 9], function(val){
+                ++count;
+                return val > 9;
+            });
+            expect(count).toEqual(9);
+            expect(result).toBeFalsy();
+        });
+    });
+
+    describe("merge", function(){
+        var merge = Ext.Array.merge;
+
+        it("should return an empty array if run on an empty array", function(){
+            expect(merge([])).toEqual([]);
+        });
+
+        it("should return a new reference", function(){
+            var arr = [1, 2, 3];
+            expect(merge(arr)).not.toBe(arr);
+        });
+
+        it("should return a copy if all items are unique", function(){
+            expect(merge([6, 7, 8])).toEqual([6, 7, 8]);
+        });
+
+        it("should only use strict typing to match", function(){
+            expect(merge([1, '1'])).toEqual([1, '1']);
+        });
+
+        it("should accept two or more arrays and return a unique union with items in order of first appearance", function(){
+            expect(merge([1, 2, 3], ['1', '2', '3'], [4, 1, 5, 2], [6, 3, 7, '1'], [8, '2', 9, '3'])).toEqual([1, 2, 3, '1', '2', '3', 4, 5, 6, 7, 8, 9]);
+        });
+    });
+
+    describe("intersect", function(){
+        var intersect = Ext.Array.intersect;
+
+        it("should return an empty array if no arrays are passed", function(){
+            expect(intersect()).toEqual([]);
+        });
+
+        it("should return an empty array if one empty array is passed", function(){
+            expect(intersect([])).toEqual([]);
+        });
+
+        it("should return a new reference", function(){
+            var arr = [1, 2, 3];
+            expect(intersect(arr)).not.toBe(arr);
+        });
+
+        it("should return a copy if one array is passed", function(){
+            expect(intersect([6, 7, 8])).toEqual([6, 7, 8]);
+        });
+
+        it("should return an intersection of two or more arrays with items in order of first appearance", function(){
+            expect(intersect([1, 2, 3], [4, 3, 2, 5], [2, 6, 3])).toEqual([2, 3]);
+        });
+
+        it("should return an empty array if there is no intersecting values", function(){
+            expect(intersect([1, 2, 3], [4, 5, 6])).toEqual([]);
+        });
+
+        it("should contain the unique set of intersected values only", function(){
+            expect(intersect([1, 1, 2, 3, 3], [1, 1, 2, 3, 3])).toEqual([1, 2, 3]);
+        });
+
+        it("should only use strict typing to match", function(){
+            expect(intersect([1], ['1'])).toEqual([]);
+        });
+    });
+
+    describe("difference", function(){
+        var difference = Ext.Array.difference;
+
+        it("should return a set difference of two arrays with items in order of first appearance", function(){
+            expect(difference([1, 2, 3, 4], [3, 2])).toEqual([1, 4]);
+        });
+
+        it("should return the first array unchanged if there is no difference", function(){
+            expect(difference([1, 2, 3], [4, 5, 6])).toEqual([1, 2, 3]);
+        });
+
+        it("should return a new reference", function(){
+            var arr = [1, 2, 3];
+            expect(difference(arr, [3, 2])).not.toBe(arr);
+        });
+
+        it("should remove multiples of the same value from the first array", function(){
+            expect(difference([1, 2, 3, 2, 4, 1], [2, 1])).toEqual([3, 4]);
+        });
+
+        it("should only use strict typing to match", function(){
+            expect(difference([1], ['1'])).toEqual([1]);
+        });
+    });
+
+    describe("sort", function() {
+       var sarray, narray;
+       beforeEach(function() {
+          sarray = ['bbb', 'addda', 'erere', 'fff', 'de3'];
+          narray = [1,3,2,4,6,7];
+
+       });
+
+       describe("with strings", function() {
+           it("should be able to sort an array without sortFn", function() {
+                Ext.Array.sort(sarray);
+                expect(sarray).toEqual(['addda', 'bbb', 'de3', 'erere', 'fff']);
+           });
+
+
+           it("should be able to use a sortFn that returns a Number", function() {
+                Ext.Array.sort(sarray, function(a,b){ 
+                    if (a === b) {
+                        return 0;
+                    } 
+                    return  a > b ? 1: -1;
+                });
+                expect(sarray).toEqual(['addda', 'bbb', 'de3', 'erere', 'fff']);
+           });
+       });
+
+       describe("with numbers", function() {
+           it("should be able to sort an array without sortFn", function() {
+                Ext.Array.sort(narray);
+                expect(narray).toEqual([1,2,3,4,6,7]);
+           });
+
+
+           it("should be able to use a sortFn that returns a Number", function() {
+                Ext.Array.sort(narray, function(a,b){
+                    return a - b;
+                });
+                expect(narray).toEqual([1,2,3,4,6,7]);
+           });
+       });
+    });
+
+    describe("min", function() {
+        describe("numbers", function() {
+            it("without comparisonFn", function() {
+                expect(Ext.Array.min([1,2,3,4,5,6])).toEqual(1);
+            });
+
+            it("with comparisonFn", function() {
+                expect(Ext.Array.min([1,2,3,4,5,6], function(a, b) { return a < b ? 1 : -1 })).toEqual(6);
+            });
+        });
+    });
+
+    describe("max", function() {
+        describe("numbers", function() {
+            it("without comparisonFn", function() {
+                expect(Ext.Array.max([1,2,3,4,5,6])).toEqual(6);
+            });
+
+            it("with comparisonFn", function() {
+                expect(Ext.Array.max([1,2,3,4,5,6], function(a, b) { return a < b ? 1 : -1 })).toEqual(1);
+            });
+        });
+    });
+
+    describe("sum", function() {
+        it("should return 21", function() {
+            expect(Ext.Array.sum([1,2,3,4,5,6])).toEqual(21);
+        });
+    });
+
+    describe("mean", function() {
+        it("should return 3.5", function() {
+            expect(Ext.Array.mean([1,2,3,4,5,6])).toEqual(3.5);
+        });
+    });
+});