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119 lines
2.7 KiB
119 lines
2.7 KiB
const assert = require('chai').assert;
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const ko = require('knockout');
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const clientUtil = require('../clientUtil');
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const ObservableMap = require('app/client/lib/ObservableMap');
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describe('ObservableMap', function () {
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clientUtil.setTmpMochaGlobals();
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let factor, mapFunc, map, additive;
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let obsKey1, obsKey2, obsValue1, obsValue2;
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before(function () {
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factor = ko.observable(2);
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additive = 0;
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mapFunc = ko.computed(() => {
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let f = factor();
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return function (key) {
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return key * f + additive;
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};
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});
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map = ObservableMap.create(mapFunc);
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});
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it('should keep track of items and update values on key updates', function () {
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obsKey1 = ko.observable(1);
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obsKey2 = ko.observable(2);
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assert.isUndefined(map.get(1));
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assert.isUndefined(map.get(2));
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obsValue1 = map.add(obsKey1);
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obsValue2 = map.add(obsKey2);
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assert.equal(map.get(1).size, 1);
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assert.equal(map.get(2).size, 1);
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assert.equal(obsValue1(), 2);
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assert.equal(obsValue2(), 4);
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obsKey1(2);
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assert.isUndefined(map.get(1));
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assert.equal(map.get(2).size, 2);
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assert.equal(obsValue1(), 4);
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assert.equal(obsValue2(), 4);
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});
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it('should update all values if mapping function is updated', function () {
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assert.equal(obsValue1(), 4);
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assert.equal(obsValue2(), 4);
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factor(3);
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assert.equal(obsValue1(), 6);
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assert.equal(obsValue2(), 6);
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obsKey1(4);
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obsKey2(5);
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assert.equal(obsValue1(), 12);
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assert.equal(obsValue2(), 15);
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});
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it('updateKeys should update values for that key, but not other values', function () {
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additive = 7;
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map.updateKeys([4]);
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assert.equal(obsValue1(), 19);
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assert.equal(obsValue2(), 15);
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});
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it('updateAll should update all values for all keys', function () {
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additive = 8;
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map.updateAll();
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assert.equal(obsValue1(), 20);
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assert.equal(obsValue2(), 23);
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});
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it('should remove items when they are disposed', function () {
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let obsKey1 = ko.observable(6);
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let obsKey2 = ko.observable(6);
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assert.isUndefined(map.get(6));
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let obsValue1 = map.add(obsKey1);
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let obsValue2 = map.add(obsKey2);
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assert(map.get(6).has(obsValue1));
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assert(map.get(6).has(obsValue2));
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assert.equal(map.get(6).size, 2);
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obsValue1.dispose();
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assert.isFalse(map.get(6).has(obsValue1));
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assert.equal(map.get(6).size, 1);
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obsValue2.dispose();
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assert.isUndefined(map.get(6));
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});
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it('should unsubscribe from observables on disposal', function () {
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assert.equal(obsValue1(), 20);
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assert.equal(obsValue2(), 23);
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map.dispose();
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obsKey1(10);
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obsKey2(11);
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factor(3);
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assert.equal(obsValue1(), 20);
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assert.equal(obsValue2(), 23);
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});
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});
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