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ed2fd2d0ca
If the $last property is calculated from the original collectionLength on an object and properties starting with $ were filtered out, then $last is never applied and $middle is applied erroniously. Closes #1789
468 lines
14 KiB
JavaScript
468 lines
14 KiB
JavaScript
'use strict';
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describe('ngRepeat', function() {
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var element, $compile, scope;
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beforeEach(inject(function(_$compile_, $rootScope) {
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$compile = _$compile_;
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scope = $rootScope.$new();
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}));
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afterEach(function(){
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dealoc(element);
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});
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it('should iterate over an array of objects', function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="item in items">{{item.name}};</li>' +
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'</ul>')(scope);
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Array.prototype.extraProperty = "should be ignored";
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// INIT
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scope.items = [{name: 'misko'}, {name:'shyam'}];
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scope.$digest();
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expect(element.find('li').length).toEqual(2);
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expect(element.text()).toEqual('misko;shyam;');
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delete Array.prototype.extraProperty;
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// GROW
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scope.items.push({name: 'adam'});
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('misko;shyam;adam;');
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// SHRINK
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scope.items.pop();
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scope.items.shift();
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scope.$digest();
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expect(element.find('li').length).toEqual(1);
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expect(element.text()).toEqual('shyam;');
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});
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it('should iterate over an array of primitives', function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="item in items">{{item}};</li>' +
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'</ul>')(scope);
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Array.prototype.extraProperty = "should be ignored";
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// INIT
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scope.items = [true, true, true];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('true;true;true;');
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delete Array.prototype.extraProperty;
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scope.items = [false, true, true];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('false;true;true;');
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scope.items = [false, true, false];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('false;true;false;');
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scope.items = [true];
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scope.$digest();
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expect(element.find('li').length).toEqual(1);
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expect(element.text()).toEqual('true;');
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scope.items = [true, true, false];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('true;true;false;');
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scope.items = [true, false, false];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('true;false;false;');
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// string
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scope.items = ['a', 'a', 'a'];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('a;a;a;');
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scope.items = ['ab', 'a', 'a'];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('ab;a;a;');
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scope.items = ['test'];
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scope.$digest();
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expect(element.find('li').length).toEqual(1);
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expect(element.text()).toEqual('test;');
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scope.items = ['same', 'value'];
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scope.$digest();
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expect(element.find('li').length).toEqual(2);
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expect(element.text()).toEqual('same;value;');
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// number
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scope.items = [12, 12, 12];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('12;12;12;');
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scope.items = [53, 12, 27];
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('53;12;27;');
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scope.items = [89];
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scope.$digest();
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expect(element.find('li').length).toEqual(1);
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expect(element.text()).toEqual('89;');
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scope.items = [89, 23];
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scope.$digest();
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expect(element.find('li').length).toEqual(2);
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expect(element.text()).toEqual('89;23;');
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});
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it('should iterate over on object/map', function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="(key, value) in items">{{key}}:{{value}}|</li>' +
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'</ul>')(scope);
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scope.items = {misko:'swe', shyam:'set'};
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scope.$digest();
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expect(element.text()).toEqual('misko:swe|shyam:set|');
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});
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it('should iterate over object with changing primitive property values', function() {
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// test for issue #933
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element = $compile(
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'<ul>' +
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'<li ng-repeat="(key, value) in items">' +
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'{{key}}:{{value}};' +
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'<input type="checkbox" ng-model="items[key]">' +
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'</li>' +
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'</ul>')(scope);
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scope.items = {misko: true, shyam: true, zhenbo:true};
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scope.$digest();
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expect(element.find('li').length).toEqual(3);
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expect(element.text()).toEqual('misko:true;shyam:true;zhenbo:true;');
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browserTrigger(element.find('input').eq(0), 'click');
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expect(element.text()).toEqual('misko:false;shyam:true;zhenbo:true;');
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expect(element.find('input')[0].checked).toBe(false);
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expect(element.find('input')[1].checked).toBe(true);
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expect(element.find('input')[2].checked).toBe(true);
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browserTrigger(element.find('input').eq(0), 'click');
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expect(element.text()).toEqual('misko:true;shyam:true;zhenbo:true;');
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expect(element.find('input')[0].checked).toBe(true);
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expect(element.find('input')[1].checked).toBe(true);
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expect(element.find('input')[2].checked).toBe(true);
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browserTrigger(element.find('input').eq(1), 'click');
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expect(element.text()).toEqual('misko:true;shyam:false;zhenbo:true;');
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expect(element.find('input')[0].checked).toBe(true);
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expect(element.find('input')[1].checked).toBe(false);
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expect(element.find('input')[2].checked).toBe(true);
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scope.items = {misko: false, shyam: true, zhenbo: true};
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scope.$digest();
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expect(element.text()).toEqual('misko:false;shyam:true;zhenbo:true;');
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expect(element.find('input')[0].checked).toBe(false);
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expect(element.find('input')[1].checked).toBe(true);
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expect(element.find('input')[2].checked).toBe(true);
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});
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it('should not ngRepeat over parent properties', function() {
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var Class = function() {};
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Class.prototype.abc = function() {};
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Class.prototype.value = 'abc';
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element = $compile(
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'<ul>' +
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'<li ng-repeat="(key, value) in items">{{key}}:{{value}};</li>' +
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'</ul>')(scope);
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scope.items = new Class();
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scope.items.name = 'value';
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scope.$digest();
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expect(element.text()).toEqual('name:value;');
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});
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it('should error on wrong parsing of ngRepeat', function() {
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expect(function() {
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element = jqLite('<ul><li ng-repeat="i dont parse"></li></ul>');
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$compile(element)(scope);
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}).toThrow("Expected ngRepeat in form of '_item_ in _collection_' but got 'i dont parse'.");
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});
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it("should throw error when left-hand-side of ngRepeat can't be parsed", function() {
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expect(function() {
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element = jqLite('<ul><li ng-repeat="i dont parse in foo"></li></ul>');
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$compile(element)(scope);
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}).toThrow("'item' in 'item in collection' should be identifier or (key, value) but got " +
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"'i dont parse'.");
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});
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it('should expose iterator offset as $index when iterating over arrays',
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function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="item in items">{{item}}:{{$index}}|</li>' +
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'</ul>')(scope);
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scope.items = ['misko', 'shyam', 'frodo'];
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scope.$digest();
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expect(element.text()).toEqual('misko:0|shyam:1|frodo:2|');
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});
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it('should expose iterator offset as $index when iterating over objects', function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="(key, val) in items">{{key}}:{{val}}:{{$index}}|</li>' +
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'</ul>')(scope);
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scope.items = {'misko':'m', 'shyam':'s', 'frodo':'f'};
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scope.$digest();
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expect(element.text()).toEqual('frodo:f:0|misko:m:1|shyam:s:2|');
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});
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it('should expose iterator position as $first, $middle and $last when iterating over arrays',
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function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="item in items">{{item}}:{{$first}}-{{$middle}}-{{$last}}|</li>' +
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'</ul>')(scope);
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scope.items = ['misko', 'shyam', 'doug'];
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scope.$digest();
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expect(element.text()).
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toEqual('misko:true-false-false|shyam:false-true-false|doug:false-false-true|');
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scope.items.push('frodo');
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scope.$digest();
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expect(element.text()).
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toEqual('misko:true-false-false|' +
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'shyam:false-true-false|' +
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'doug:false-true-false|' +
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'frodo:false-false-true|');
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scope.items.pop();
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scope.items.pop();
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scope.$digest();
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expect(element.text()).toEqual('misko:true-false-false|shyam:false-false-true|');
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scope.items.pop();
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scope.$digest();
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expect(element.text()).toEqual('misko:true-false-true|');
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});
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it('should expose iterator position as $first, $middle and $last when iterating over objects',
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function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="(key, val) in items">{{key}}:{{val}}:{{$first}}-{{$middle}}-{{$last}}|</li>' +
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'</ul>')(scope);
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scope.items = {'misko':'m', 'shyam':'s', 'doug':'d', 'frodo':'f'};
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scope.$digest();
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expect(element.text()).
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toEqual('doug:d:true-false-false|' +
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'frodo:f:false-true-false|' +
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'misko:m:false-true-false|' +
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'shyam:s:false-false-true|');
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delete scope.items.doug;
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delete scope.items.frodo;
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scope.$digest();
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expect(element.text()).toEqual('misko:m:true-false-false|shyam:s:false-false-true|');
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delete scope.items.shyam;
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scope.$digest();
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expect(element.text()).toEqual('misko:m:true-false-true|');
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});
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it('should calculate $first, $middle and $last when we filter out properties from an obj', function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="(key, val) in items">{{key}}:{{val}}:{{$first}}-{{$middle}}-{{$last}}|</li>' +
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'</ul>')(scope);
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scope.items = {'misko':'m', 'shyam':'s', 'doug':'d', 'frodo':'f', '$toBeFilteredOut': 'xxxx'};
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scope.$digest();
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expect(element.text()).
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toEqual('doug:d:true-false-false|' +
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'frodo:f:false-true-false|' +
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'misko:m:false-true-false|' +
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'shyam:s:false-false-true|');
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});
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it('should ignore $ and $$ properties', function() {
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element = $compile('<ul><li ng-repeat="i in items">{{i}}|</li></ul>')(scope);
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scope.items = ['a', 'b', 'c'];
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scope.items.$$hashkey = 'xxx';
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scope.items.$root = 'yyy';
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scope.$digest();
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expect(element.text()).toEqual('a|b|c|');
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});
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it('should repeat over nested arrays', function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="subgroup in groups">' +
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'<div ng-repeat="group in subgroup">{{group}}|</div>X' +
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'</li>' +
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'</ul>')(scope);
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scope.groups = [['a', 'b'], ['c','d']];
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scope.$digest();
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expect(element.text()).toEqual('a|b|Xc|d|X');
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});
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it('should ignore non-array element properties when iterating over an array', function() {
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element = $compile('<ul><li ng-repeat="item in array">{{item}}|</li></ul>')(scope);
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scope.array = ['a', 'b', 'c'];
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scope.array.foo = '23';
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scope.array.bar = function() {};
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scope.$digest();
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expect(element.text()).toBe('a|b|c|');
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});
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it('should iterate over non-existent elements of a sparse array', function() {
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element = $compile('<ul><li ng-repeat="item in array">{{item}}|</li></ul>')(scope);
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scope.array = ['a', 'b'];
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scope.array[4] = 'c';
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scope.array[6] = 'd';
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scope.$digest();
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expect(element.text()).toBe('a|b|||c||d|');
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});
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it('should iterate over all kinds of types', function() {
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element = $compile('<ul><li ng-repeat="item in array">{{item}}|</li></ul>')(scope);
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scope.array = ['a', 1, null, undefined, {}];
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scope.$digest();
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expect(element.text()).toMatch(/a\|1\|\|\|\{\s*\}\|/);
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});
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describe('stability', function() {
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var a, b, c, d, lis;
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beforeEach(function() {
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element = $compile(
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'<ul>' +
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'<li ng-repeat="item in items">{{key}}:{{val}}|></li>' +
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'</ul>')(scope);
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a = {};
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b = {};
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c = {};
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d = {};
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scope.items = [a, b, c];
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scope.$digest();
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lis = element.find('li');
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});
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it('should preserve the order of elements', function() {
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scope.items = [a, c, d];
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scope.$digest();
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var newElements = element.find('li');
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expect(newElements[0]).toEqual(lis[0]);
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expect(newElements[1]).toEqual(lis[2]);
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expect(newElements[2]).not.toEqual(lis[1]);
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});
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it('should support duplicates', function() {
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scope.items = [a, a, b, c];
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scope.$digest();
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var newElements = element.find('li');
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expect(newElements[0]).toEqual(lis[0]);
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expect(newElements[1]).not.toEqual(lis[0]);
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expect(newElements[2]).toEqual(lis[1]);
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expect(newElements[3]).toEqual(lis[2]);
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lis = newElements;
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scope.$digest();
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newElements = element.find('li');
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expect(newElements[0]).toEqual(lis[0]);
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expect(newElements[1]).toEqual(lis[1]);
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expect(newElements[2]).toEqual(lis[2]);
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expect(newElements[3]).toEqual(lis[3]);
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scope.$digest();
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newElements = element.find('li');
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expect(newElements[0]).toEqual(lis[0]);
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expect(newElements[1]).toEqual(lis[1]);
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expect(newElements[2]).toEqual(lis[2]);
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expect(newElements[3]).toEqual(lis[3]);
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});
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it('should remove last item when one duplicate instance is removed', function() {
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scope.items = [a, a, a];
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scope.$digest();
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lis = element.find('li');
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scope.items = [a, a];
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scope.$digest();
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var newElements = element.find('li');
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expect(newElements.length).toEqual(2);
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expect(newElements[0]).toEqual(lis[0]);
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expect(newElements[1]).toEqual(lis[1]);
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});
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it('should reverse items when the collection is reversed', function() {
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scope.items = [a, b, c];
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scope.$digest();
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lis = element.find('li');
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scope.items = [c, b, a];
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scope.$digest();
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var newElements = element.find('li');
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expect(newElements.length).toEqual(3);
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expect(newElements[0]).toEqual(lis[2]);
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expect(newElements[1]).toEqual(lis[1]);
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expect(newElements[2]).toEqual(lis[0]);
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});
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it('should reuse elements even when model is composed of primitives', function() {
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// rebuilding repeater from scratch can be expensive, we should try to avoid it even for
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// model that is composed of primitives.
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scope.items = ['hello', 'cau', 'ahoj'];
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scope.$digest();
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lis = element.find('li');
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scope.items = ['ahoj', 'hello', 'cau'];
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scope.$digest();
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var newLis = element.find('li');
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expect(newLis.length).toEqual(3);
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expect(newLis[0]).toEqual(lis[2]);
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expect(newLis[1]).toEqual(lis[0]);
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expect(newLis[2]).toEqual(lis[1]);
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});
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});
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});
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