can/map/list/list_test.js

MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.

steal("can/map/list", "steal-qunit", function () {
	QUnit.module('can/map/list');
	test('filter', 8, function () {
		var original = new can.List([{
			name: 'Test 1',
			age: 20
		}, {
			name: 'Test 2',
			age: 80
		}, {
			name: 'Test 3',
			age: 1
		}, {
			name: 'Test 4',
			age: 21
		}]);
		var state = new can.Map({
			minAge: 20
		});
		var filtered = original.filter(function (element) {
			return element.attr('age') > state.attr('minAge');
		});
		original.attr('0.age', 22);
		equal(filtered.length, 3, 'Updating age adds a new item to filtered list');
		equal(filtered[filtered.length - 1].attr('age'), 22, 'Item has updated age');
		original.attr('1.age', 18);
		equal(filtered.length, 2, 'Updating age removes existing item from filtered list');
		state.attr('minAge', 80);
		original.attr('1.age', 87);
		equal(filtered.length, 1, 'Filtered list has one item');
		equal(filtered[0].attr('age'), 87, 'Contains single item with udpated age');
		state.attr('minAge', 29);
		original.push({
			name: 'Pushed tester',
			age: 28
		}, {
			name: 'Pushed tester 2',
			age: 30
		});
		equal(filtered.length, 2, 'Newly pushed element got updated according to filter');
		original.pop();
		equal(filtered.length, 1, 'Removed element also removed from filter');
		equal(filtered[0].attr('name'), 'Test 2', 'Older element remains');
	});
	test('attr updates items in position order', function () {
		var original = new can.List([{
			id: 1,
			name: 'Test 1',
			age: 20
		}, {
			id: 2,
			name: 'Test 2',
			age: 80
		}, {
			id: 3,
			name: 'Test 3',
			age: 1
		}]);
		original.attr([{
			id: 1,
			name: 'Test 1',
			age: 120
		}, {
			id: 2,
			name: 'Test 2',
			age: 180
		}, {
			id: 3,
			name: 'Test 3',
			age: 101
		}]);
		equal(original.attr('0.id'), 1);
		equal(original.attr('0.age'), 120, 'Test 1\'s age incremented by 100 years');
		equal(original.attr('1.id'), 2);
		equal(original.attr('1.age'), 180, 'Test 2\'s age incremented by 100 years');
		equal(original.attr('2.id'), 3);
		equal(original.attr('2.age'), 101, 'Test 3\'s age incremented by 100 years');
	});
	test('map', function () {
		var original = new can.List([{
			name: 'Test 1',
			age: 20
		}, {
			name: 'Test 2',
			age: 80
		}, {
			name: 'Test 3',
			age: 1
		}]);
		var mapped = original.map(function (element) {
			return element.attr('name') + ' (' + element.attr('age') + ')';
		});
		equal(mapped.length, 3, 'All items mapped');
		original.attr('0.name', 'Updated test');
		original.attr('0.age', '24');
		equal(mapped[0], 'Updated test (24)', 'Mapping got updated');
		original.push({
			name: 'Push test',
			age: 99
		});
		equal(mapped[mapped.length - 1], 'Push test (' + 99 + ')');
		original.shift();
		equal(mapped.length, 3, 'Item got removed');
	});
});