--- /dev/null
+/* global describe, it, expect, beforeEach, jasmine, xit */
+
+var toStr = Object.prototype.toString;
+var canDistinguishSparseFromUndefined = 0 in [undefined]; // IE 6 - 8 have a bug where this returns false.
+var ifHasDenseUndefinedsIt = canDistinguishSparseFromUndefined ? it : xit;
+var undefinedIfNoSparseBug = canDistinguishSparseFromUndefined ? undefined : { valueOf: function () { return 0; } };
+var hasStrictMode = (function () {
+ 'use strict';
+
+ return !this;
+}());
+var ifHasStrictIt = hasStrictMode ? it : xit;
+
+describe('Array', function () {
+ var testSubject;
+
+ beforeEach(function () {
+ testSubject = [2, 3, undefinedIfNoSparseBug, true, 'hej', null, false, 0];
+ delete testSubject[1];
+ });
+
+ var createArrayLikeFromArray = function createArrayLikeFromArray(arr) {
+ var o = {};
+ Array.prototype.forEach.call(arr, function (e, i) {
+ o[i] = e;
+ });
+ o.length = arr.length;
+ return o;
+ };
+
+ describe('#forEach()', function () {
+ var expected, actual;
+
+ beforeEach(function () {
+ expected = { 0: 2, 2: undefinedIfNoSparseBug, 3: true, 4: 'hej', 5: null, 6: false, 7: 0 };
+ actual = {};
+ });
+
+ it('should pass the right parameters', function () {
+ var callback = jasmine.createSpy('callback');
+ var array = ['1'];
+ array.forEach(callback);
+ expect(callback).toHaveBeenCalledWith('1', 0, array);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.forEach(function (a) {
+ i += 1;
+ arr.push(a + 3);
+ });
+ expect(arr).toEqual([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ it('should set the right context when given none', function () {
+ var context;
+ [1].forEach(function () { context = this; });
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should iterate all', function () {
+ testSubject.forEach(function (obj, index) {
+ actual[index] = obj;
+ });
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should iterate all using a context', function () {
+ var o = { a: actual };
+
+ testSubject.forEach(function (obj, index) {
+ this.a[index] = obj;
+ }, o);
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should iterate all in an array-like object', function () {
+ var ts = createArrayLikeFromArray(testSubject);
+ Array.prototype.forEach.call(ts, function (obj, index) {
+ actual[index] = obj;
+ });
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should iterate all in an array-like object using a context', function () {
+ var ts = createArrayLikeFromArray(testSubject);
+ var o = { a: actual };
+
+ Array.prototype.forEach.call(ts, function (obj, index) {
+ this.a[index] = obj;
+ }, o);
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ describe('strings', function () {
+ var str = 'Hello, World!';
+
+ it('should iterate all in a string', function () {
+ actual = [];
+ Array.prototype.forEach.call(str, function (item, index) {
+ actual[index] = item;
+ });
+ expect(actual).toExactlyMatch(str.split(''));
+ });
+
+ it('should iterate all in a string using a context', function () {
+ actual = [];
+ var o = { a: actual };
+ Array.prototype.forEach.call(str, function (item, index) {
+ this.a[index] = item;
+ }, o);
+ expect(actual).toExactlyMatch(str.split(''));
+ });
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var listArg;
+ Array.prototype.forEach.call('foo', function (item, index, list) {
+ listArg = list;
+ });
+ expect(typeof listArg).toBe('object');
+ expect(toStr.call(listArg)).toBe('[object String]');
+ });
+
+ ifHasStrictIt('does not autobox the content in strict mode', function () {
+ var context;
+ [1].forEach(function () {
+ 'use strict';
+
+ context = this;
+ }, 'x');
+ expect(typeof context).toBe('string');
+ });
+ });
+ describe('#some()', function () {
+ var actual, expected, numberOfRuns;
+
+ beforeEach(function () {
+ expected = { 0: 2, 2: undefinedIfNoSparseBug, 3: true };
+ actual = {};
+ numberOfRuns = 0;
+ });
+
+ it('should pass the correct values along to the callback', function () {
+ var callback = jasmine.createSpy('callback');
+ var array = ['1'];
+ array.some(callback);
+ expect(callback).toHaveBeenCalledWith('1', 0, array);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.some(function (a) {
+ i += 1;
+ arr.push(a + 3);
+ return i > 3;
+ });
+ expect(arr).toEqual([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ it('should set the right context when given none', function () {
+ /* eslint-disable array-callback-return */
+ var context;
+ [1].some(function () { context = this; });
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should return false if it runs to the end', function () {
+ /* eslint-disable array-callback-return */
+ actual = testSubject.some(function () {});
+ expect(actual).toBeFalsy();
+ });
+
+ it('should return true if it is stopped somewhere', function () {
+ actual = testSubject.some(function () { return true; });
+ expect(actual).toBeTruthy();
+ });
+
+ it('should return false if there are no elements', function () {
+ actual = [].some(function () { return true; });
+ expect(actual).toBeFalsy();
+ });
+
+ it('should stop after 3 elements', function () {
+ testSubject.some(function (obj, index) {
+ actual[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns === 3;
+ });
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should stop after 3 elements using a context', function () {
+ var o = { a: actual };
+ testSubject.some(function (obj, index) {
+ this.a[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns === 3;
+ }, o);
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should stop after 3 elements in an array-like object', function () {
+ var ts = createArrayLikeFromArray(testSubject);
+ Array.prototype.some.call(ts, function (obj, index) {
+ actual[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns === 3;
+ });
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should stop after 3 elements in an array-like object using a context', function () {
+ var ts = createArrayLikeFromArray(testSubject);
+ var o = { a: actual };
+ Array.prototype.some.call(ts, function (obj, index) {
+ this.a[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns === 3;
+ }, o);
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var listArg;
+ Array.prototype.some.call('foo', function (item, index, list) {
+ listArg = list;
+ });
+ expect(typeof listArg).toBe('object');
+ expect(toStr.call(listArg)).toBe('[object String]');
+ });
+ });
+ describe('#every()', function () {
+ var actual, expected, numberOfRuns;
+
+ beforeEach(function () {
+ expected = { 0: 2, 2: undefinedIfNoSparseBug, 3: true };
+ actual = {};
+ numberOfRuns = 0;
+ });
+
+ it('should pass the correct values along to the callback', function () {
+ var callback = jasmine.createSpy('callback');
+ var array = ['1'];
+ array.every(callback);
+ expect(callback).toHaveBeenCalledWith('1', 0, array);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.every(function (a) {
+ i += 1;
+ arr.push(a + 3);
+ return i <= 3;
+ });
+ expect(arr).toEqual([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ it('should set the right context when given none', function () {
+ /* eslint-disable array-callback-return */
+ var context;
+ [1].every(function () { context = this; });
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should return true if the array is empty', function () {
+ actual = [].every(function () { return true; });
+ expect(actual).toBeTruthy();
+
+ actual = [].every(function () { return false; });
+ expect(actual).toBeTruthy();
+ });
+
+ it('should return true if it runs to the end', function () {
+ actual = [1, 2, 3].every(function () { return true; });
+ expect(actual).toBeTruthy();
+ });
+
+ it('should return false if it is stopped before the end', function () {
+ actual = [1, 2, 3].every(function () { return false; });
+ expect(actual).toBeFalsy();
+ });
+
+ it('should return after 3 elements', function () {
+ testSubject.every(function (obj, index) {
+ actual[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns !== 3;
+ });
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should stop after 3 elements using a context', function () {
+ var o = { a: actual };
+ testSubject.every(function (obj, index) {
+ this.a[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns !== 3;
+ }, o);
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should stop after 3 elements in an array-like object', function () {
+ var ts = createArrayLikeFromArray(testSubject);
+ Array.prototype.every.call(ts, function (obj, index) {
+ actual[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns !== 3;
+ });
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should stop after 3 elements in an array-like object using a context', function () {
+ var ts = createArrayLikeFromArray(testSubject);
+ var o = { a: actual };
+ Array.prototype.every.call(ts, function (obj, index) {
+ this.a[index] = obj;
+ numberOfRuns += 1;
+ return numberOfRuns !== 3;
+ }, o);
+ expect(actual).toExactlyMatch(expected);
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var listArg;
+ Array.prototype.every.call('foo', function (item, index, list) {
+ listArg = list;
+ });
+ expect(typeof listArg).toBe('object');
+ expect(toStr.call(listArg)).toBe('[object String]');
+ });
+ });
+
+ describe('#indexOf()', function () {
+ 'use strict';
+
+ var actual, expected;
+
+ beforeEach(function () {
+ testSubject = [2, 3, undefinedIfNoSparseBug, true, 'hej', null, 2, false, 0];
+ delete testSubject[1];
+ });
+
+ it('should find the element', function () {
+ expected = 4;
+ actual = testSubject.indexOf('hej');
+ expect(actual).toBe(expected);
+ });
+
+ it('should not find the element', function () {
+ expected = -1;
+ actual = testSubject.indexOf('mus');
+ expect(actual).toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should find undefined as well', function () {
+ expected = -1;
+ actual = testSubject.indexOf(undefined);
+ expect(actual).not.toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should skip unset indexes', function () {
+ expected = 2;
+ actual = testSubject.indexOf(undefined);
+ expect(actual).toBe(expected);
+ });
+
+ it('should use a strict test', function () {
+ actual = testSubject.indexOf(null);
+ expect(actual).toBe(5);
+
+ actual = testSubject.indexOf('2');
+ expect(actual).toBe(-1);
+ });
+
+ it('should skip the first if fromIndex is set', function () {
+ expect(testSubject.indexOf(2, 2)).toBe(6);
+ expect(testSubject.indexOf(2, 0)).toBe(0);
+ expect(testSubject.indexOf(2, 6)).toBe(6);
+ });
+
+ it('should work with negative fromIndex', function () {
+ expect(testSubject.indexOf(2, -3)).toBe(6);
+ expect(testSubject.indexOf(2, -9)).toBe(0);
+ });
+
+ it('should work with fromIndex being greater than the length', function () {
+ expect(testSubject.indexOf(0, 20)).toBe(-1);
+ });
+
+ it('should work with fromIndex being negative and greater than the length', function () {
+ expect(testSubject.indexOf('hej', -20)).toBe(4);
+ });
+
+ describe('Array-like', function ArrayLike() {
+ var indexOf = Array.prototype.indexOf;
+ var testAL;
+
+ beforeEach(function beforeEach() {
+ testAL = {};
+ testSubject = [2, 3, undefinedIfNoSparseBug, true, 'hej', null, 2, false, 0];
+ testSubject.forEach(function (o, i) {
+ testAL[i] = o;
+ });
+ testAL.length = testSubject.length;
+ });
+
+ it('should find the element (array-like)', function () {
+ expected = 4;
+ actual = indexOf.call(testAL, 'hej');
+ expect(actual).toBe(expected);
+ });
+
+ it('should not find the element (array-like)', function () {
+ expected = -1;
+ actual = indexOf.call(testAL, 'mus');
+ expect(actual).toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should find undefined as well (array-like)', function () {
+ expected = -1;
+ actual = indexOf.call(testAL, undefined);
+ expect(actual).not.toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should skip unset indexes (array-like)', function () {
+ expected = 2;
+ actual = indexOf.call(testAL, undefined);
+ expect(actual).toBe(expected);
+ });
+
+ it('should use a strict test (array-like)', function () {
+ actual = Array.prototype.indexOf.call(testAL, null);
+ expect(actual).toBe(5);
+
+ actual = Array.prototype.indexOf.call(testAL, '2');
+ expect(actual).toBe(-1);
+ });
+
+ it('should skip the first if fromIndex is set (array-like)', function () {
+ expect(indexOf.call(testAL, 2, 2)).toBe(6);
+ expect(indexOf.call(testAL, 2, 0)).toBe(0);
+ expect(indexOf.call(testAL, 2, 6)).toBe(6);
+ });
+
+ it('should work with negative fromIndex (array-like)', function () {
+ expect(indexOf.call(testAL, 2, -3)).toBe(6);
+ expect(indexOf.call(testAL, 2, -9)).toBe(0);
+ });
+
+ it('should work with fromIndex being greater than the length (array-like)', function () {
+ expect(indexOf.call(testAL, 0, 20)).toBe(-1);
+ });
+
+ it('should work with fromIndex being negative and greater than the length (array-like)', function () {
+ expect(indexOf.call(testAL, 'hej', -20)).toBe(4);
+ });
+ });
+ });
+ describe('#lastIndexOf()', function () {
+ 'use strict';
+
+ var actual, expected;
+
+ beforeEach(function () {
+ testSubject = [2, 3, undefinedIfNoSparseBug, true, 'hej', null, 2, 3, false, 0];
+ delete testSubject[1];
+ delete testSubject[7];
+ });
+
+ describe('Array', function () {
+ it('should find the element', function () {
+ expected = 4;
+ actual = testSubject.lastIndexOf('hej');
+ expect(actual).toBe(expected);
+ });
+
+ it('should not find the element', function () {
+ expected = -1;
+ actual = testSubject.lastIndexOf('mus');
+ expect(actual).toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should find undefined as well', function () {
+ expected = -1;
+ actual = testSubject.lastIndexOf(undefined);
+ expect(actual).not.toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should skip unset indexes', function () {
+ expected = 2;
+ actual = testSubject.lastIndexOf(undefined);
+ expect(actual).toBe(expected);
+ });
+
+ it('should use a strict test', function () {
+ actual = testSubject.lastIndexOf(null);
+ expect(actual).toBe(5);
+
+ actual = testSubject.lastIndexOf('2');
+ expect(actual).toBe(-1);
+ });
+
+ it('should skip the first if fromIndex is set', function () {
+ expect(testSubject.lastIndexOf(2, 2)).toBe(0);
+ expect(testSubject.lastIndexOf(2, 0)).toBe(0);
+ expect(testSubject.lastIndexOf(2, 6)).toBe(6);
+ });
+
+ it('should work with negative fromIndex', function () {
+ expect(testSubject.lastIndexOf(2, -3)).toBe(6);
+ expect(testSubject.lastIndexOf(2, -9)).toBe(0);
+ });
+
+ it('should work with fromIndex being greater than the length', function () {
+ expect(testSubject.lastIndexOf(2, 20)).toBe(6);
+ });
+
+ it('should work with fromIndex being negative and greater than the length', function () {
+ expect(testSubject.lastIndexOf(2, -20)).toBe(-1);
+ });
+ });
+
+ describe('Array like', function () {
+ var lastIndexOf = Array.prototype.lastIndexOf;
+ var testAL;
+
+ beforeEach(function () {
+ testAL = {};
+ testSubject.forEach(function (o, i) {
+ testAL[i] = o;
+ });
+ testAL.length = testSubject.length;
+ });
+
+ it('should find the element (array-like)', function () {
+ expected = 4;
+ actual = lastIndexOf.call(testAL, 'hej');
+ expect(actual).toBe(expected);
+ });
+
+ it('should not find the element (array-like)', function () {
+ expected = -1;
+ actual = lastIndexOf.call(testAL, 'mus');
+ expect(actual).toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should find undefined as well (array-like)', function () {
+ expected = -1;
+ actual = lastIndexOf.call(testAL, undefined);
+ expect(actual).not.toBe(expected);
+ });
+
+ ifHasDenseUndefinedsIt('should skip unset indexes (array-like)', function () {
+ expected = 2;
+ actual = lastIndexOf.call(testAL, undefined);
+ expect(actual).toBe(expected);
+ });
+
+ it('should use a strict test (array-like)', function () {
+ actual = lastIndexOf.call(testAL, null);
+ expect(actual).toBe(5);
+
+ actual = lastIndexOf.call(testAL, '2');
+ expect(actual).toBe(-1);
+ });
+
+ it('should skip the first if fromIndex is set', function () {
+ expect(lastIndexOf.call(testAL, 2, 2)).toBe(0);
+ expect(lastIndexOf.call(testAL, 2, 0)).toBe(0);
+ expect(lastIndexOf.call(testAL, 2, 6)).toBe(6);
+ });
+
+ it('should work with negative fromIndex', function () {
+ expect(lastIndexOf.call(testAL, 2, -3)).toBe(6);
+ expect(lastIndexOf.call(testAL, 2, -9)).toBe(0);
+ });
+
+ it('should work with fromIndex being greater than the length', function () {
+ expect(lastIndexOf.call(testAL, 2, 20)).toBe(6);
+ });
+
+ it('should work with fromIndex being negative and greater than the length', function () {
+ expect(lastIndexOf.call(testAL, 2, -20)).toBe(-1);
+ });
+ });
+ });
+
+ describe('#filter()', function () {
+ var filteredArray;
+ var callback = function callback(o, i) {
+ return i !== 3 && i !== 5;
+ };
+
+ beforeEach(function () {
+ testSubject = [2, 3, undefinedIfNoSparseBug, true, 'hej', 3, null, false, 0];
+ delete testSubject[1];
+ filteredArray = [2, undefinedIfNoSparseBug, 'hej', null, false, 0];
+ });
+ describe('Array object', function () {
+ it('should call the callback with the proper arguments', function () {
+ var predicate = jasmine.createSpy('predicate');
+ var arr = ['1'];
+ arr.filter(predicate);
+ expect(predicate).toHaveBeenCalledWith('1', 0, arr);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.filter(function (a) {
+ i += 1;
+ if (i <= 4) {
+ arr.push(a + 3);
+ }
+ return true;
+ });
+ expect(arr).toEqual([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ ifHasDenseUndefinedsIt('should skip unset values', function () {
+ var passedValues = {};
+ testSubject = [1, 2, 3, 4];
+ delete testSubject[1];
+ testSubject.filter(function (o, i) {
+ passedValues[i] = o;
+ return true;
+ });
+ expect(passedValues).toExactlyMatch(testSubject);
+ });
+
+ it('should pass the right context to the filter', function () {
+ var passedValues = {};
+ testSubject = [1, 2, 3, 4];
+ delete testSubject[1];
+ testSubject.filter(function (o, i) {
+ this[i] = o;
+ return true;
+ }, passedValues);
+ expect(passedValues).toExactlyMatch(testSubject);
+ });
+
+ it('should set the right context when given none', function () {
+ /* eslint-disable array-callback-return */
+ var context;
+ [1].filter(function () { context = this; });
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should remove only the values for which the callback returns false', function () {
+ var result = testSubject.filter(callback);
+ expect(result).toExactlyMatch(filteredArray);
+ });
+
+ it('should leave the original array untouched', function () {
+ var copy = testSubject.slice();
+ testSubject.filter(callback);
+ expect(testSubject).toExactlyMatch(copy);
+ });
+
+ it('should not be affected by same-index mutation', function () {
+ var results = [1, 2, 3].filter(function (value, index, array) {
+ array[index] = 'a';
+ return true;
+ });
+ expect(results).toEqual([1, 2, 3]);
+ });
+ });
+
+ describe('Array like', function () {
+ beforeEach(function () {
+ testSubject = createArrayLikeFromArray(testSubject);
+ });
+
+ it('should call the predicate with the proper arguments', function () {
+ var predicate = jasmine.createSpy('predicate');
+ var arr = createArrayLikeFromArray(['1']);
+ Array.prototype.filter.call(arr, predicate);
+ expect(predicate).toHaveBeenCalledWith('1', 0, arr);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = createArrayLikeFromArray([1, 2, 3]);
+ var i = 0;
+ Array.prototype.filter.call(arr, function (a) {
+ i += 1;
+ if (i <= 4) {
+ arr[i + 2] = a + 3;
+ arr.length += 1;
+ }
+ return true;
+ });
+ expect(Array.prototype.slice.call(arr)).toEqual([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ it('should skip non-set values', function () {
+ var passedValues = createArrayLikeFromArray([]);
+ testSubject = createArrayLikeFromArray([1, 2, 3, 4]);
+ delete testSubject[1];
+ Array.prototype.filter.call(testSubject, function (o, i) {
+ passedValues[i] = o;
+ passedValues.length = i + 1;
+ return true;
+ });
+ expect(passedValues).toEqual(testSubject);
+ });
+
+ it('should set the right context when given none', function () {
+ var context;
+ Array.prototype.filter.call(createArrayLikeFromArray([1]), function () { context = this; }, undefined);
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should pass the right context to the filter', function () {
+ var passedValues = {};
+ testSubject = createArrayLikeFromArray([1, 2, 3, 4]);
+ delete testSubject[1];
+ Array.prototype.filter.call(testSubject, function (o, i) {
+ this[i] = o;
+ this.length = i + 1;
+ return true;
+ }, passedValues);
+ expect(passedValues).toEqual(testSubject);
+ });
+
+ it('should remove only the values for which the callback returns false', function () {
+ var result = Array.prototype.filter.call(testSubject, callback);
+ expect(result).toExactlyMatch(filteredArray);
+ });
+
+ it('should leave the original array untouched', function () {
+ var copy = createArrayLikeFromArray(testSubject);
+ Array.prototype.filter.call(testSubject, callback);
+ expect(testSubject).toExactlyMatch(copy);
+ });
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var actual;
+ Array.prototype.filter.call('foo', function (item, index, list) {
+ actual = list;
+ });
+ expect(typeof actual).toBe('object');
+ expect(toStr.call(actual)).toBe('[object String]');
+ });
+ });
+ describe('#map()', function () {
+ var callback;
+ beforeEach(function () {
+ var i = 0;
+ callback = function () {
+ return i++;
+ };
+ });
+ describe('Array object', function () {
+ it('should call mapper with the right parameters', function () {
+ var mapper = jasmine.createSpy('mapper');
+ var array = [1];
+ array.map(mapper);
+ expect(mapper).toHaveBeenCalledWith(1, 0, array);
+ });
+
+ it('should set the context correctly', function () {
+ var context = {};
+ testSubject.map(function (o, i) {
+ this[i] = o;
+ }, context);
+ expect(context).toExactlyMatch(testSubject);
+ });
+
+ it('should set the right context when given none', function () {
+ var context;
+ [1].map(function () { context = this; });
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should not change the array it is called on', function () {
+ var copy = testSubject.slice();
+ testSubject.map(callback);
+ expect(testSubject).toExactlyMatch(copy);
+ });
+
+ it('should only run for the number of objects in the array when it started', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.map(function (o) {
+ arr.push(o + 3);
+ i += 1;
+ return o;
+ });
+ expect(arr).toExactlyMatch([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ it('should properly translate the values as according to the callback', function () {
+ var result = testSubject.map(callback);
+ var expected = [0, 0, 1, 2, 3, 4, 5, 6];
+ delete expected[1];
+ expect(result).toExactlyMatch(expected);
+ });
+
+ it('should skip non-existing values', function () {
+ var array = [1, 2, 3, 4];
+ var i = 0;
+ delete array[2];
+ array.map(function () {
+ i += 1;
+ });
+ expect(i).toBe(3);
+ });
+ });
+ describe('Array-like', function () {
+ beforeEach(function () {
+ testSubject = createArrayLikeFromArray(testSubject);
+ });
+
+ it('should call mapper with the right parameters', function () {
+ var mapper = jasmine.createSpy('mapper');
+ var array = createArrayLikeFromArray([1]);
+ Array.prototype.map.call(array, mapper);
+ expect(mapper).toHaveBeenCalledWith(1, 0, array);
+ });
+
+ it('should set the context correctly', function () {
+ var context = {};
+ Array.prototype.map.call(testSubject, function (o, i) {
+ this[i] = o;
+ this.length = i + 1;
+ }, context);
+ expect(context).toEqual(testSubject);
+ });
+
+ it('should set the right context when given none', function () {
+ var context;
+ Array.prototype.map.call(createArrayLikeFromArray([1]), function () { context = this; });
+ expect(context).toBe(function () { return this; }.call());
+ });
+
+ it('should not change the array it is called on', function () {
+ var copy = createArrayLikeFromArray(testSubject);
+ Array.prototype.map.call(testSubject, callback);
+ expect(testSubject).toExactlyMatch(copy);
+ });
+
+ it('should only run for the number of objects in the array when it started', function () {
+ var arr = createArrayLikeFromArray([1, 2, 3]);
+ var i = 0;
+ Array.prototype.map.call(arr, function (o) {
+ Array.prototype.push.call(arr, o + 3);
+ i += 1;
+ return o;
+ });
+ expect(Array.prototype.slice.call(arr)).toEqual([1, 2, 3, 4, 5, 6]);
+ expect(i).toBe(3);
+ });
+
+ it('should properly translate the values as according to the callback', function () {
+ var result = Array.prototype.map.call(testSubject, callback);
+ var expected = [0, 0, 1, 2, 3, 4, 5, 6];
+ delete expected[1];
+ expect(result).toExactlyMatch(expected);
+ });
+
+ it('should skip non-existing values', function () {
+ var array = createArrayLikeFromArray([1, 2, 3, 4]);
+ var i = 0;
+ delete array[2];
+ Array.prototype.map.call(array, function () {
+ i += 1;
+ });
+ expect(i).toBe(3);
+ });
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var actual;
+ Array.prototype.map.call('foo', function (item, index, list) {
+ actual = list;
+ });
+ expect(typeof actual).toBe('object');
+ expect(toStr.call(actual)).toBe('[object String]');
+ });
+ });
+
+ describe('#reduce()', function () {
+ beforeEach(function () {
+ testSubject = [1, 2, 3];
+ });
+
+ describe('Array', function () {
+ it('should pass the correct arguments to the callback', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduce(spy);
+ expect(spy.calls[0].args).toExactlyMatch([1, 2, 1, testSubject]);
+ });
+
+ it('should start with the right initialValue', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduce(spy, 0);
+ expect(spy.calls[0].args).toExactlyMatch([0, 1, 0, testSubject]);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.reduce(function (a, b) {
+ i += 1;
+ if (i <= 4) {
+ arr.push(a + 3);
+ }
+ return b;
+ });
+ expect(arr).toEqual([1, 2, 3, 4, 5]);
+ expect(i).toBe(2);
+ });
+
+ it('should work as expected for empty arrays', function () {
+ var spy = jasmine.createSpy();
+ expect(function () {
+ [].reduce(spy);
+ }).toThrow();
+ expect(spy).not.toHaveBeenCalled();
+ });
+
+ it('should throw correctly if no callback is given', function () {
+ expect(function () {
+ testSubject.reduce();
+ }).toThrow();
+ });
+
+ it('should return the expected result', function () {
+ expect(testSubject.reduce(function (a, b) {
+ return String(a || '') + String(b || '');
+ })).toBe(testSubject.join(''));
+ });
+
+ it('should not directly affect the passed array', function () {
+ var copy = testSubject.slice();
+ testSubject.reduce(function (a, b) {
+ return a + b;
+ });
+ expect(testSubject).toEqual(copy);
+ });
+
+ it('should skip non-set values', function () {
+ delete testSubject[1];
+ var visited = {};
+ testSubject.reduce(function (a, b) {
+ if (a) { visited[a] = true; }
+ if (b) { visited[b] = true; }
+ return 0;
+ });
+
+ expect(visited).toEqual({ 1: true, 3: true });
+ });
+
+ it('should have the right length', function () {
+ expect(testSubject.reduce.length).toBe(1);
+ });
+ });
+ describe('Array-like objects', function () {
+ beforeEach(function () {
+ testSubject = createArrayLikeFromArray(testSubject);
+ testSubject.reduce = Array.prototype.reduce;
+ });
+
+ it('should pass the correct arguments to the callback', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduce(spy);
+ expect(spy.calls[0].args).toExactlyMatch([1, 2, 1, testSubject]);
+ });
+
+ it('should start with the right initialValue', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduce(spy, 0);
+ expect(spy.calls[0].args).toExactlyMatch([0, 1, 0, testSubject]);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = createArrayLikeFromArray([1, 2, 3]);
+ var i = 0;
+ Array.prototype.reduce.call(arr, function (a, b) {
+ i += 1;
+ if (i <= 4) {
+ arr[i + 2] = a + 3;
+ }
+ return b;
+ });
+ expect(arr).toEqual({
+ 0: 1,
+ 1: 2,
+ 2: 3,
+ 3: 4,
+ 4: 5,
+ length: 3
+ });
+ expect(i).toBe(2);
+ });
+
+ it('should work as expected for empty arrays', function () {
+ var spy = jasmine.createSpy();
+ expect(function () {
+ Array.prototype.reduce.call({ length: 0 }, spy);
+ }).toThrow();
+ expect(spy).not.toHaveBeenCalled();
+ });
+
+ it('should throw correctly if no callback is given', function () {
+ expect(function () {
+ testSubject.reduce();
+ }).toThrow();
+ });
+
+ it('should return the expected result', function () {
+ expect(testSubject.reduce(function (a, b) {
+ return String(a || '') + String(b || '');
+ })).toBe('123');
+ });
+
+ it('should not directly affect the passed array', function () {
+ var copy = createArrayLikeFromArray(testSubject);
+ testSubject.reduce(function (a, b) {
+ return a + b;
+ });
+ delete testSubject.reduce;
+ expect(testSubject).toEqual(copy);
+ });
+
+ it('should skip non-set values', function () {
+ delete testSubject[1];
+ var visited = {};
+ testSubject.reduce(function (a, b) {
+ if (a) { visited[a] = true; }
+ if (b) { visited[b] = true; }
+ return 0;
+ });
+
+ expect(visited).toEqual({ 1: true, 3: true });
+ });
+
+ it('should have the right length', function () {
+ expect(testSubject.reduce.length).toBe(1);
+ });
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var actual;
+ Array.prototype.reduce.call('foo', function (accumulator, item, index, list) {
+ actual = list;
+ });
+ expect(typeof actual).toBe('object');
+ expect(toStr.call(actual)).toBe('[object String]');
+ });
+ });
+ describe('#reduceRight()', function () {
+ beforeEach(function () {
+ testSubject = [1, 2, 3];
+ });
+
+ describe('Array', function () {
+ it('should pass the correct arguments to the callback', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduceRight(spy);
+ expect(spy.calls[0].args).toExactlyMatch([3, 2, 1, testSubject]);
+ });
+
+ it('should start with the right initialValue', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduceRight(spy, 0);
+ expect(spy.calls[0].args).toExactlyMatch([0, 3, 2, testSubject]);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = [1, 2, 3];
+ var i = 0;
+ arr.reduceRight(function (a, b) {
+ i += 1;
+ if (i <= 4) {
+ arr.push(a + 3);
+ }
+ return b;
+ });
+ expect(arr).toEqual([1, 2, 3, 6, 5]);
+ expect(i).toBe(2);
+ });
+
+ it('should work as expected for empty arrays', function () {
+ var spy = jasmine.createSpy();
+ expect(function () {
+ [].reduceRight(spy);
+ }).toThrow();
+ expect(spy).not.toHaveBeenCalled();
+ });
+
+ it('should work as expected for empty arrays with an initial value', function () {
+ var spy = jasmine.createSpy();
+ var result;
+
+ result = [].reduceRight(spy, '');
+ expect(spy).not.toHaveBeenCalled();
+ expect(result).toBe('');
+ });
+
+ it('should throw correctly if no callback is given', function () {
+ expect(function () {
+ testSubject.reduceRight();
+ }).toThrow();
+ });
+
+ it('should return the expected result', function () {
+ expect(testSubject.reduceRight(function (a, b) {
+ return String(a || '') + String(b || '');
+ })).toBe('321');
+ });
+
+ it('should not directly affect the passed array', function () {
+ var copy = testSubject.slice();
+ testSubject.reduceRight(function (a, b) {
+ return a + b;
+ });
+ expect(testSubject).toEqual(copy);
+ });
+
+ it('should skip non-set values', function () {
+ delete testSubject[1];
+ var visited = {};
+ testSubject.reduceRight(function (a, b) {
+ if (a) { visited[a] = true; }
+ if (b) { visited[b] = true; }
+ return 0;
+ });
+
+ expect(visited).toEqual({ 1: true, 3: true });
+ });
+
+ it('should have the right length', function () {
+ expect(testSubject.reduceRight.length).toBe(1);
+ });
+ });
+ describe('Array-like objects', function () {
+ beforeEach(function () {
+ testSubject = createArrayLikeFromArray(testSubject);
+ testSubject.reduceRight = Array.prototype.reduceRight;
+ });
+
+ it('should pass the correct arguments to the callback', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduceRight(spy);
+ expect(spy.calls[0].args).toExactlyMatch([3, 2, 1, testSubject]);
+ });
+
+ it('should start with the right initialValue', function () {
+ var spy = jasmine.createSpy().andReturn(0);
+ testSubject.reduceRight(spy, 0);
+ expect(spy.calls[0].args).toExactlyMatch([0, 3, 2, testSubject]);
+ });
+
+ it('should not affect elements added to the array after it has begun', function () {
+ var arr = createArrayLikeFromArray([1, 2, 3]);
+ var i = 0;
+ Array.prototype.reduceRight.call(arr, function (a, b) {
+ i += 1;
+ if (i <= 4) {
+ arr[i + 2] = a + 3;
+ }
+ return b;
+ });
+ expect(arr).toEqual({
+ 0: 1,
+ 1: 2,
+ 2: 3,
+ 3: 6,
+ 4: 5,
+ length: 3 // does not get updated on property assignment
+ });
+ expect(i).toBe(2);
+ });
+
+ it('should work as expected for empty arrays', function () {
+ var spy = jasmine.createSpy();
+ expect(function () {
+ Array.prototype.reduceRight.call({ length: 0 }, spy);
+ }).toThrow();
+ expect(spy).not.toHaveBeenCalled();
+ });
+
+ it('should throw correctly if no callback is given', function () {
+ expect(function () {
+ testSubject.reduceRight();
+ }).toThrow();
+ });
+
+ it('should return the expected result', function () {
+ expect(testSubject.reduceRight(function (a, b) {
+ return String(a || '') + String(b || '');
+ })).toBe('321');
+ });
+
+ it('should not directly affect the passed array', function () {
+ var copy = createArrayLikeFromArray(testSubject);
+ testSubject.reduceRight(function (a, b) {
+ return a + b;
+ });
+ delete testSubject.reduceRight;
+ expect(testSubject).toEqual(copy);
+ });
+
+ it('should skip non-set values', function () {
+ delete testSubject[1];
+ var visited = {};
+ testSubject.reduceRight(function (a, b) {
+ if (a) { visited[a] = true; }
+ if (b) { visited[b] = true; }
+ return 0;
+ });
+
+ expect(visited).toEqual({ 1: true, 3: true });
+ });
+
+ it('should have the right length', function () {
+ expect(testSubject.reduceRight.length).toBe(1);
+ });
+ });
+
+ it('should have a boxed object as list argument of callback', function () {
+ var actual;
+ Array.prototype.reduceRight.call('foo', function (accumulator, item, index, list) {
+ actual = list;
+ });
+ expect(typeof actual).toBe('object');
+ expect(toStr.call(actual)).toBe('[object String]');
+ });
+ });
+
+ describe('.isArray()', function () {
+ it('should be true for Array', function () {
+ expect(Array.isArray([])).toBe(true);
+ });
+
+ it('should be false for primitives', function () {
+ var primitives = [
+ 'foo',
+ true,
+ false,
+ 42,
+ 0,
+ -0,
+ NaN,
+ Infinity,
+ -Infinity
+ ];
+ primitives.forEach(function (v) {
+ expect(Array.isArray(v)).toBe(false);
+ });
+ });
+
+ it('should fail for other objects', function () {
+ var objects = [
+ {},
+ /foo/,
+ arguments
+ ];
+ if (Object.create) {
+ objects.push(Object.create(null));
+ }
+
+ objects.forEach(function (v) {
+ expect(Array.isArray(v)).toBe(false);
+ });
+ });
+
+ /* globals document */
+ if (typeof document !== 'undefined') {
+ it('should be false for an HTML element', function () {
+ var el = document.getElementsByTagName('div');
+ expect(Array.isArray(el)).toBe(false);
+ });
+ }
+ });
+
+ describe('#shift()', function () {
+ it('works on arrays', function () {
+ var arr = [1, 2];
+ var result = arr.shift();
+ expect(result).toBe(1);
+ expect(arr.length).toBe(1);
+ expect(Object.prototype.hasOwnProperty.call(arr, 0)).toBe(true);
+ expect(Object.prototype.hasOwnProperty.call(arr, 1)).toBe(false);
+ expect(arr[0]).toBe(2);
+ expect(arr[1]).toBeUndefined();
+ });
+
+ it('is generic', function () {
+ var obj = { 0: 1, 1: 2, length: 2 };
+ var result = Array.prototype.shift.call(obj);
+ expect(result).toBe(1);
+ expect(obj.length).toBe(1);
+ expect(Object.prototype.hasOwnProperty.call(obj, 0)).toBe(true);
+ expect(Object.prototype.hasOwnProperty.call(obj, 1)).toBe(false);
+ expect(obj[0]).toBe(2);
+ expect(obj[1]).toBeUndefined();
+ });
+ });
+
+ describe('#unshift()', function () {
+ it('should return length', function () {
+ expect([].unshift(0)).toBe(1);
+ });
+
+ it('works on arrays', function () {
+ var arr = [1];
+ var result = arr.unshift(undefined);
+ expect(result).toBe(2);
+ expect(arr.length).toBe(2);
+ expect(Object.prototype.hasOwnProperty.call(arr, 0)).toBe(true);
+ expect(Object.prototype.hasOwnProperty.call(arr, 1)).toBe(true);
+ expect(arr[0]).toBeUndefined();
+ expect(arr[1]).toBe(1);
+ });
+
+ it('is generic', function () {
+ var obj = { 0: 1, length: 1 };
+ var result = Array.prototype.unshift.call(obj, undefined);
+ expect(result).toBe(2);
+ expect(obj.length).toBe(2);
+ expect(Object.prototype.hasOwnProperty.call(obj, 0)).toBe(true);
+ expect(Object.prototype.hasOwnProperty.call(obj, 1)).toBe(true);
+ expect(obj[0]).toBeUndefined();
+ expect(obj[1]).toBe(1);
+ });
+ });
+
+ describe('#splice()', function () {
+ var b = ['b'];
+ var a = [1, 'a', b];
+ var test;
+
+ var makeArray = function (l, givenPrefix) {
+ var prefix = givenPrefix || '';
+ var length = l;
+ var arr = [];
+ while (length--) {
+ arr.unshift(prefix + Array(length + 1).join(' ') + length);
+ }
+ return arr;
+ };
+
+ beforeEach(function () {
+ test = a.slice(0);
+ });
+
+ it('has the right length', function () {
+ expect(Array.prototype.splice.length).toBe(2);
+ });
+
+ /* This test is disabled, because ES6 normalizes actual
+ * browser behavior, contradicting ES5.
+ */
+ xit('treats undefined deleteCount as 0', function () {
+ expect(test.splice(0).length).toBe(0);
+ expect(test.splice(0)).toEqual(test.splice(0, 0));
+ });
+
+ it('basic implementation test 1', function () {
+ expect(test.splice(0, 0)).toEqual([]);
+ });
+
+ it('basic implementation test 2', function () {
+ test.splice(0, 2);
+ expect(test).toEqual([b]);
+ });
+
+ it('should return right result 1', function () {
+ var array = [];
+
+ array.splice(0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20);
+ array.splice(1, 0, 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26');
+ array.splice(5, 0, 'XXX');
+
+ expect(array).toEqual([1, 'F1', 'F2', 'F3', 'F4', 'XXX', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26', 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]);
+ });
+
+ it('should return right result 2', function () {
+ var array = makeArray(6);
+
+ array.splice(array.length - 1, 1, '');
+ array.splice(0, 1, 1, 2, 3, 4);
+ array.splice(0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45);
+
+ array.splice(4, 0, '99999999999999');
+
+ expect(array).toEqual([1, 2, 3, 4, '99999999999999', 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 1, 2, 3, 4, ' 1', ' 2', ' 3', ' 4', '']);
+ });
+
+ it('should return right result 3', function () {
+ var array = [1, 2, 3];
+
+ array.splice(0, array.length);
+ array.splice(0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
+ array.splice(1, 1, 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26');
+ array.splice(5, 1, 'YYY', 'XXX');
+ array.splice(0, 1);
+ array.splice(0, 2);
+ array.pop();
+ array.push.apply(array, makeArray(10, '-'));
+ array.splice(array.length - 2, 10);
+ array.splice();
+ array.splice(1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9);
+ array.splice(1, 1, 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26', 1, 23, 4, 5, 6, 7, 8);
+ array.splice(30, 10);
+ array.splice(30, 1);
+ array.splice(30, 0);
+ array.splice(2, 5, 1, 2, 3, 'P', 'LLL', 'CCC', 'YYY', 'XXX');
+ array.push(1, 2, 3, 4, 5, 6);
+ array.splice(1, 6, 1, 2, 3, 4, 5, 6, 7, 8, 9, 4, 5, 6, 7, 8, 9);
+ array.splice(3, 7);
+ array.unshift(7, 8, 9, 10, 11);
+ array.pop();
+ array.splice(5, 2);
+ array.pop();
+ array.unshift.apply(array, makeArray(8, '~'));
+ array.pop();
+ array.splice(3, 1, 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26', 1, 23, 4, 5, 6, 7, 8);
+ array.splice(4, 5, 'P', 'LLL', 'CCC', 'YYY', 'XXX');
+
+ expect(array).toEqual(['~0', '~ 1', '~ 2', 'F1', 'P', 'LLL', 'CCC', 'YYY', 'XXX', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26', 1, 23, 4, 5, 6, 7, 8, '~ 4', '~ 5', '~ 6', '~ 7', 7, 8, 9, 10, 11, 2, 4, 5, 6, 7, 8, 9, 'CCC', 'YYY', 'XXX', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26', 1, 23, 4, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'YYY', 'XXX', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20', 'F21', 'F22', 'F23', 'F24', 'F25', 'F26', 3, 4, 5, 6, 7, 8, 9, '-0', '- 1', '- 2', '- 3', '- 4', '- 5', '- 6', '- 7', 1, 2, 3]);
+ });
+
+ it('should do nothing if method called with no arguments', function () {
+ expect(test.splice()).toEqual([]);
+ expect(test).toEqual(a);
+ });
+
+ it('should set first argument to 0 if first argument is set but undefined', function () {
+ var test2 = test.slice(0);
+ expect(test.splice(void 0, 2)).toEqual(test2.splice(0, 2));
+ expect(test).toEqual(test2);
+ });
+
+ it('should work with objects - adding 1', function () {
+ var obj = {};
+ Array.prototype.splice.call(obj, 0, 0, 1, 2, 3);
+ expect(obj.length).toBe(3);
+ });
+
+ it('should work with objects - adding 2', function () {
+ var obj = { 0: 1, length: 1 };
+ Array.prototype.splice.call(obj, 1, 0, 2, 3);
+ expect(obj.length).toBe(3);
+ });
+
+ it('should work with objects - removing', function () {
+ var obj = { 0: 1, 1: 2, 2: 3, length: 3 };
+ Array.prototype.splice.call(obj, 0, 3);
+ expect(obj.length).toBe(0);
+ });
+
+ it('should work with objects - replacing', function () {
+ var obj = { 0: 99, length: 1 };
+ Array.prototype.splice.call(obj, 0, 1, 1, 2, 3);
+ expect(obj.length).toBe(3);
+ expect(obj[0]).toBe(1);
+ });
+
+ ifHasDenseUndefinedsIt('should not break on sparse arrays in Opera', function () {
+ // test from https://github.com/wikimedia/VisualEditor/blob/d468b00311e69c2095b9da360c5745153342a5c3/src/ve.utils.js#L182-L196
+ var n = 256;
+ var arr = [];
+ arr[n] = 'a';
+ arr.splice(n + 1, 0, 'b');
+ expect(arr[n]).toBe('a');
+ });
+
+ ifHasDenseUndefinedsIt('should not break on sparse arrays in Safari 7/8', function () {
+ // test from https://github.com/wikimedia/VisualEditor/blob/d468b00311e69c2095b9da360c5745153342a5c3/src/ve.utils.js#L182-L196
+ var justFine = new Array(1e5 - 1);
+ justFine[10] = 'x';
+ var tooBig = new Array(1e5);
+ tooBig[8] = 'x';
+
+ justFine.splice(1, 1);
+ expect(8 in justFine).toBe(false);
+ expect(justFine.indexOf('x')).toBe(9);
+ tooBig.splice(1, 1);
+ expect(6 in tooBig).toBe(false);
+ expect(tooBig.indexOf('x')).toBe(7);
+ });
+ });
+
+ describe('#join()', function () {
+ it('defaults to a comma separator when none is provided', function () {
+ expect([1, 2].join()).toBe('1,2');
+ });
+
+ it('defaults to a comma separator when undefined is provided', function () {
+ expect([1, 2].join(undefined)).toBe('1,2');
+ });
+
+ it('works, extended', function () {
+ expect([].join()).toBe('');
+ expect([undefined].join()).toBe('');
+ expect([undefined, undefined].join()).toBe(',');
+ expect([null, null].join()).toBe(',');
+ expect([undefined, undefined].join('|')).toBe('|');
+ expect([null, null].join('|')).toBe('|');
+ expect([1, 2, 3].join('|')).toBe('1|2|3');
+ expect([1, 2, 3].join(null)).toBe('1null2null3');
+ expect([1, 2, 3].join({})).toBe('1[object Object]2[object Object]3');
+ expect([1, 2, 3].join('')).toBe('123');
+ });
+
+ it('is generic', function () {
+ var obj = { 0: 1, 1: 2, 2: 3, 3: 4, length: 3 };
+ expect(Array.prototype.join.call(obj, ',')).toBe('1,2,3');
+ });
+
+ it('works with a string literal', function () {
+ var str = '123';
+ expect(Array.prototype.join.call(str, ',')).toBe('1,2,3');
+ });
+
+ it('works with `arguments`', function () {
+ var args = (function () { return arguments; }(1, 2, 3));
+ expect(Array.prototype.join.call(args, ',')).toBe('1,2,3');
+ });
+ });
+
+ describe('#push()', function () {
+ it('works on arrays', function () {
+ var arr = [];
+ var result = arr.push(undefined);
+ expect(result).toBe(1);
+ expect(arr.length).toBe(1);
+ expect(Object.prototype.hasOwnProperty.call(arr, 0)).toBe(true);
+ expect(arr[0]).toBeUndefined();
+ });
+
+ it('is generic', function () {
+ var obj = {};
+ var result = Array.prototype.push.call(obj, undefined);
+ expect(result).toBe(1);
+ expect(obj.length).toBe(1);
+ expect(Object.prototype.hasOwnProperty.call(obj, 0)).toBe(true);
+ expect(obj[0]).toBeUndefined();
+ });
+ });
+
+ describe('#pop()', function () {
+ it('works on arrays', function () {
+ var arr = [1, 2, 3];
+ var result = arr.pop();
+ expect(result).toBe(3);
+ expect(arr.length).toBe(2);
+ expect(Object.prototype.hasOwnProperty.call(arr, 2)).toBe(false);
+ expect(arr[2]).toBeUndefined();
+ });
+
+ it('is generic', function () {
+ var obj = { 0: 1, 1: 2, 2: 3, length: 3 };
+ var result = Array.prototype.pop.call(obj);
+ expect(result).toBe(3);
+ expect(obj.length).toBe(2);
+ expect(Object.prototype.hasOwnProperty.call(obj, 2)).toBe(false);
+ expect(obj[2]).toBeUndefined();
+ });
+ });
+
+ describe('#slice()', function () {
+ it('works on arrays', function () {
+ var arr = [1, 2, 3, 4];
+ var result = arr.slice(1, 3);
+ expect(result).toEqual([2, 3]);
+ });
+
+ it('is generic', function () {
+ var obj = { 0: 1, 1: 2, 2: 3, 3: 4, length: 4 };
+ var result = Array.prototype.slice.call(obj, 1, 3);
+ expect(result).toEqual([2, 3]);
+ });
+
+ it('works with `arguments`', function () {
+ var obj = (function () {
+ return arguments;
+ }(1, 2, 3, 4));
+ var result = Array.prototype.slice.call(obj, 1, 3);
+ expect(result).toEqual([2, 3]);
+ });
+
+ it('boxed string access', function () {
+ var obj = '1234';
+ var result = Array.prototype.slice.call(obj, 1, 3);
+ expect(result).toEqual(['2', '3']);
+ });
+ });
+
+ describe('#sort()', function () {
+ describe('usage', function () {
+ it('requires a function or undefined as first argument', function () {
+ var actual = [1, 2];
+ expect(actual.sort()).toBe(actual);
+ expect(actual.sort(undefined)).toBe(actual);
+ expect(actual.sort(function () { return 0; })).toBe(actual);
+ });
+
+ it('requires a non-function or non-undefined to throw a `TypeError`', function () {
+ expect(function () { [1, 2].sort(null); }).toThrow();
+ expect(function () { [1, 2].sort(1); }).toThrow();
+ expect(function () { [1, 2].sort(''); }).toThrow();
+ expect(function () { [1, 2].sort(true); }).toThrow();
+ expect(function () { [1, 2].sort({}); }).toThrow();
+ expect(function () { [1, 2].sort([]); }).toThrow();
+ expect(function () { [1, 2].sort(new Date()); }).toThrow();
+ expect(function () { [1, 2].sort(/pattern/); }).toThrow();
+ });
+ });
+
+ describe('ascending', function () {
+ it('[5,2,4,6,1,3] should result in [1,2,3,4,5,6]', function () {
+ var actual = [5, 2, 4, 6, 1, 3];
+ var expected = [1, 2, 3, 4, 5, 6];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[5,2,2,6,1,3] should result in [1,2,2,3,5,6]', function () {
+ var actual = [5, 2, 2, 6, 1, 3];
+ var expected = [1, 2, 2, 3, 5, 6];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[0,0,0,0,0,1] should result in [0,0,0,0,0,1]', function () {
+ var actual = [0, 0, 0, 0, 0, 1];
+ var expected = [0, 0, 0, 0, 0, 1];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[0,0,0,0,0,-1] should result in [-1,0,0,0,0,0]', function () {
+ var actual = [0, 0, 0, 0, 0, -1];
+ var expected = [-1, 0, 0, 0, 0, 0];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,a,c,b] should result in [a,b,c,d,e,f]', function () {
+ var actual = ['f', 'e', 'd', 'a', 'c', 'b'];
+ var expected = ['a', 'b', 'c', 'd', 'e', 'f'];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,,,,a,c,b] should result in [a,b,c,d,e,f,,,]', function () {
+ var actual = ['f', 'e', 'd', 1, 2, 'a', 'c', 'b'];
+ delete actual[3];
+ delete actual[4];
+ var expected = ['a', 'b', 'c', 'd', 'e', 'f'];
+ expected.length = 8;
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,,null,,a,c,b] should result in [a,b,c,d,e,f,null,,,]', function () {
+ var actual = ['f', 'e', 'd', 1, null, 2, 'a', 'c', 'b'];
+ delete actual[3];
+ delete actual[5];
+ var expected = ['a', 'b', 'c', 'd', 'e', 'f', null];
+ expected.length = 9;
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,,null,undefined,a,c,b] should result in [a,b,c,d,e,f,null,undefined,,]', function () {
+ var actual = ['f', 'e', 'd', 1, null, undefined, 'a', 'c', 'b'];
+ delete actual[3];
+ var expected = ['a', 'b', 'c', 'd', 'e', 'f', null, undefined];
+ expected.length = 9;
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[] should result in []', function () {
+ var actual = [];
+ var expected = [];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('[1] should result in [1]', function () {
+ var actual = [1];
+ var expected = [1];
+ actual.sort();
+ expect(actual).toEqual(expected);
+ });
+
+ it('result should find only greater or equal values', function () {
+ var actual = [];
+ var i;
+ for (i = 0; i < 100; i += 1) {
+ actual.push(('00' + (Math.random() * 100).toFixed(0)).slice(-3));
+ }
+ actual.sort();
+ for (i = 0; i < actual.length - 1; i += 1) {
+ expect(actual[i] <= actual[i + 1]).toBe(true);
+ }
+ });
+ });
+
+ describe('descending', function () {
+ var descending = function (left, right) {
+ var leftS = String(left);
+ var rightS = String(right);
+ if (leftS === rightS) {
+ return +0;
+ }
+ if (leftS < rightS) {
+ return 1;
+ }
+ return -1;
+ };
+
+ it('[5,2,4,6,1,3] should result in [6,5,4,3,2,1]', function () {
+ var actual = [5, 2, 4, 6, 1, 3];
+ var expected = [6, 5, 4, 3, 2, 1];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[5,2,2,6,1,3] should result in [6,5,4,2,2,1]', function () {
+ var actual = [5, 2, 2, 6, 1, 3];
+ var expected = [6, 5, 3, 2, 2, 1];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[0,0,0,0,0,1] should result in [1,0,0,0,0,0]', function () {
+ var actual = [0, 0, 0, 0, 0, 1];
+ var expected = [1, 0, 0, 0, 0, 0];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[0,0,0,0,0,-1] should result in [0,0,0,0,0,-1]', function () {
+ var actual = [0, 0, 0, 0, 0, -1];
+ var expected = [0, 0, 0, 0, 0, -1];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,a,c,b] should result in [f,e,d,c,b,a]', function () {
+ var actual = ['f', 'e', 'd', 'a', 'c', 'b'];
+ var expected = ['f', 'e', 'd', 'c', 'b', 'a'];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,,,a,c,b] should result in [f,e,d,c,b,a,,,]', function () {
+ var actual = ['f', 'e', 'd', 1, 2, 'a', 'c', 'b'];
+ delete actual[3];
+ delete actual[4];
+ var expected = ['f', 'e', 'd', 'c', 'b', 'a'];
+ expected.length = 8;
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,,null,,a,c,b] should result in [null,f,e,d,c,b,a,,,]', function () {
+ var actual = ['f', 'e', 'd', 1, null, 2, 'a', 'c', 'b'];
+ delete actual[3];
+ delete actual[5];
+ var expected = [null, 'f', 'e', 'd', 'c', 'b', 'a'];
+ expected.length = 9;
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[f,e,d,undefined,null,,a,c,b] should result in [null,f,e,d,c,b,a,undefined,,]', function () {
+ var actual = ['f', 'e', 'd', undefined, null, 2, 'a', 'c', 'b'];
+ delete actual[5];
+ var expected = [null, 'f', 'e', 'd', 'c', 'b', 'a', undefined];
+ expected.length = 9;
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[] should result in []', function () {
+ var actual = [];
+ var expected = [];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('[1] should result in [1]', function () {
+ var actual = [1];
+ var expected = [1];
+ actual.sort(descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('result should find only lesser or equal values', function () {
+ var actual = [];
+ var i;
+ for (i = 0; i < 100; i += 1) {
+ actual.push(('00' + (Math.random() * 100).toFixed(0)).slice(-3));
+ }
+ actual.sort(descending);
+ for (i = 0; i < actual.length - 1; i += 1) {
+ expect(actual[i] >= actual[i + 1]).toBe(true);
+ }
+ });
+ });
+
+ describe('returned value', function () {
+ it('should be the source object', function () {
+ var actual = [1, 3, 2];
+ expect(actual.sort()).toBe(actual);
+ });
+ });
+
+ describe('when used generically', function () {
+ var descending = function (left, right) {
+ var leftS = String(left);
+ var rightS = String(right);
+ if (leftS === rightS) {
+ return +0;
+ }
+ if (leftS < rightS) {
+ return 1;
+ }
+ return -1;
+ };
+
+ var args = function () {
+ return arguments;
+ };
+
+ it('should not sort objects without length', function () {
+ var actual = {
+ 0: 5,
+ 1: 2,
+ 2: 4,
+ 3: 6,
+ 4: 1,
+ 5: 3
+ };
+ var expected = {
+ 0: 5,
+ 1: 2,
+ 2: 4,
+ 3: 6,
+ 4: 1,
+ 5: 3
+ };
+ Array.prototype.sort.call(actual);
+ expect(actual).toEqual(expected);
+ Array.prototype.sort.call(actual, descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort objects ascending with length', function () {
+ var actual = {
+ 0: 5,
+ 1: 2,
+ 2: 4,
+ 3: 6,
+ 4: 1,
+ 5: 3,
+ length: 6
+ };
+ var expected = {
+ 0: 1,
+ 1: 2,
+ 2: 3,
+ 3: 4,
+ 4: 5,
+ 5: 6,
+ length: 6
+ };
+ Array.prototype.sort.call(actual);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort objects descending with length', function () {
+ var actual = {
+ 0: 5,
+ 1: 2,
+ 2: 4,
+ 3: 6,
+ 4: 1,
+ 5: 3,
+ length: 6
+ };
+ var expected = {
+ 0: 6,
+ 1: 5,
+ 2: 4,
+ 3: 3,
+ 4: 2,
+ 5: 1,
+ length: 6
+ };
+ Array.prototype.sort.call(actual, descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort objects descending with mixed content types and with length', function () {
+ var actual = {
+ 0: 5,
+ 1: 2,
+ 2: 4,
+ 4: null,
+ 6: 1,
+ 7: 3,
+ length: 8
+ };
+ var expected = {
+ 0: null,
+ 1: 5,
+ 2: 4,
+ 3: 3,
+ 4: 2,
+ 5: 1,
+ length: 8
+ };
+ Array.prototype.sort.call(actual, descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort `arguments` object ascending', function () {
+ var actual = args(5, 2, 4, 6, 1, 3);
+ var expected = args(1, 2, 3, 4, 5, 6);
+ Array.prototype.sort.call(actual);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort `arguments` object ascending with mixed content types', function () {
+ var actual = args(5, 2, 4, null, 1, 3);
+ var expected = args(1, 2, 3, 4, 5, null);
+ Array.prototype.sort.call(actual);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort `arguments` object descending', function () {
+ var actual = args(5, 2, 4, 6, 1, 3);
+ var expected = args(6, 5, 4, 3, 2, 1);
+ Array.prototype.sort.call(actual, descending);
+ expect(actual).toEqual(expected);
+ });
+
+ it('should sort `arguments` object descending with mixed content types', function () {
+ var actual = args(5, 2, 4, null, 1, 3);
+ var expected = args(null, 5, 4, 3, 2, 1);
+ Array.prototype.sort.call(actual, descending);
+ expect(actual).toEqual(expected);
+ });
+ });
+ });
+});
projects / yaffs-website / blobdiff