121 lines
3.5 KiB
JavaScript
121 lines
3.5 KiB
JavaScript
/* globals expect, it, describe, binarySearchFirstItem, EventBus */
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'use strict';
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describe('ui_utils', function() {
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describe('binary search', function() {
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function isTrue(boolean) {
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return boolean;
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}
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function isGreater3(number) {
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return number > 3;
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}
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it('empty array', function() {
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expect(binarySearchFirstItem([], isTrue)).toEqual(0);
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});
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it('single boolean entry', function() {
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expect(binarySearchFirstItem([false], isTrue)).toEqual(1);
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expect(binarySearchFirstItem([true], isTrue)).toEqual(0);
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});
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it('three boolean entries', function() {
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expect(binarySearchFirstItem([true, true, true], isTrue)).toEqual(0);
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expect(binarySearchFirstItem([false, true, true], isTrue)).toEqual(1);
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expect(binarySearchFirstItem([false, false, true], isTrue)).toEqual(2);
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expect(binarySearchFirstItem([false, false, false], isTrue)).toEqual(3);
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});
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it('three numeric entries', function() {
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expect(binarySearchFirstItem([0, 1, 2], isGreater3)).toEqual(3);
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expect(binarySearchFirstItem([2, 3, 4], isGreater3)).toEqual(2);
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expect(binarySearchFirstItem([4, 5, 6], isGreater3)).toEqual(0);
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});
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});
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describe('EventBus', function () {
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it('dispatch event', function () {
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var eventBus = new EventBus();
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var count = 0;
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eventBus.on('test', function () {
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count++;
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});
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eventBus.dispatch('test');
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expect(count).toEqual(1);
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});
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it('dispatch different event', function () {
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var eventBus = new EventBus();
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var count = 0;
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eventBus.on('test', function () {
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count++;
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});
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eventBus.dispatch('nottest');
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expect(count).toEqual(0);
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});
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it('dispatch event multiple times', function () {
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var eventBus = new EventBus();
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var count = 0;
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eventBus.dispatch('test');
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eventBus.on('test', function () {
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count++;
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});
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eventBus.dispatch('test');
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eventBus.dispatch('test');
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expect(count).toEqual(2);
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});
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it('dispatch event to multiple handlers', function () {
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var eventBus = new EventBus();
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var count = 0;
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eventBus.on('test', function () {
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count++;
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});
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eventBus.on('test', function () {
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count++;
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});
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eventBus.dispatch('test');
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expect(count).toEqual(2);
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});
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it('dispatch to detached', function () {
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var eventBus = new EventBus();
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var count = 0;
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var listener = function () {
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count++;
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};
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eventBus.on('test', listener);
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eventBus.dispatch('test');
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eventBus.off('test', listener);
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eventBus.dispatch('test');
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expect(count).toEqual(1);
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});
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it('dispatch to wrong detached', function () {
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var eventBus = new EventBus();
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var count = 0;
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eventBus.on('test', function () {
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count++;
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});
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eventBus.dispatch('test');
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eventBus.off('test', function () {
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count++;
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});
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eventBus.dispatch('test');
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expect(count).toEqual(2);
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});
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it('dispatch to detached during handling', function () {
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var eventBus = new EventBus();
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var count = 0;
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var listener1 = function () {
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eventBus.off('test', listener2);
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count++;
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};
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var listener2 = function () {
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eventBus.off('test', listener1);
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count++;
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};
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eventBus.on('test', listener1);
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eventBus.on('test', listener2);
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eventBus.dispatch('test');
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eventBus.dispatch('test');
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expect(count).toEqual(2);
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});
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});
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});
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