reprehenderitexercitationem

import { EventDispatcher } from "../src/EventDispatcher"; describe('EventDispatcher', () => { let dispatcher: EventDispatcher, dummy: any = null, dummy2: any = null; beforeEach(() => { dispatcher = new EventDispatcher(); dummy = jasmine.createSpyObj('dummy', ['callback']); dummy2 = jasmine.createSpyObj('dummy2', ['callback']); }); it("should bind and be called properly", () => { dispatcher.bind('event', dummy.callback.bind(dummy)); expect(dummy.callback).not.toHaveBeenCalled(); dispatcher.trigger('event', 1, 2, 'three'); expect(dummy.callback).toHaveBeenCalled(); }); it("should unbind and not be called", () => { const key: number = dispatcher.bind('event', dummy.callback.bind(dummy)); expect(dispatcher.unbind('event', key)).toEqual(true); dispatcher.trigger('event', 1, 2, 'three'); expect(dummy.callback).not.toHaveBeenCalled(); }); it("should not unbind events that don't exist", () => { const key: number = dispatcher.bind('event', dummy.callback.bind(dummy)); expect(dispatcher.unbind('fake_event', -1)).toEqual(false); dispatcher.trigger('event', 1, 2, 'three'); expect(dummy.callback).toHaveBeenCalled(); }); it("should bind and be called properly", () => { dispatcher.bind('event', dummy.callback.bind(dummy)); expect(dummy.callback).not.toHaveBeenCalled(); dispatcher.trigger('event', 1, 2, 'three'); expect(dummy.callback).toHaveBeenCalled(); }); it("should unbind all", () => { dispatcher.bind('event', dummy.callback, dummy); dispatcher.bind('event', dummy.callback, dummy); dispatcher.bind('event', dummy2.callback, dummy2); expect(dispatcher.unbind('event')).toEqual(true); expect(dispatcher.unbindWithContext('event', dummy)).toBe(0); expect(dispatcher.unbindWithContext('event', dummy2)).toBe(0); dispatcher.trigger('event'); expect(dummy.callback).not.toHaveBeenCalled(); }); it("should unbind all with matching context", () => { dispatcher.bind('event', dummy.callback, dummy); dispatcher.bind('event', dummy.callback, dummy); dispatcher.bind('event', dummy2.callback, dummy2); expect(dispatcher.unbindWithContext('event', dummy)).toBe(2); dispatcher.trigger('event'); expect(dummy.callback).not.toHaveBeenCalled(); }); it("should unbind the correct listeners by key", () => { let key1 = dispatcher.bind('event', dummy.callback, dummy), key2 = dispatcher.bind('event', dummy.callback, dummy), key3 = dispatcher.bind('event', dummy.callback, dummy), key4 = dispatcher.bind('event', dummy.callback, dummy), key5 = dispatcher.bind('event', dummy.callback, dummy); expect(dispatcher.unbind('event', key2)).toBe(true); expect(dispatcher.unbind('event', key4)).toBe(true); expect(dispatcher.unbind('event', key1)).toBe(true); expect(dispatcher.unbind('event', key3)).toBe(true); expect(dispatcher.unbind('event', key5)).toBe(true); }); it("should fail to unbind the once listeners", () => { let key1: number = dispatcher.once('event', dummy.callback, dummy), cb1: any = dispatcher.getListener('event', key1), key2: number = dispatcher.once('event', dummy.callback, dummy), cb2: any = dispatcher.getListener('event', key2), key3: number = dispatcher.once('event', dummy.callback, dummy), cb3: any = dispatcher.getListener('event', key3), key4: number = dispatcher.bind('event', dummy.callback, dummy), cb4: any = dispatcher.getListener('event', key4), key5: number = dispatcher.once('event', dummy.callback, dummy), cb5: any = dispatcher.getListener('event', key5); dispatcher.trigger('event'); dispatcher.trigger('event'); dispatcher.trigger('event'); dispatcher.trigger('event'); expect(dispatcher.unbind('event', key2)).toBe(false); expect(cb2.calls).toBe(1); expect(dispatcher.unbind('event', key4)).toBe(true); expect(cb4.calls).toBe(4); expect(dispatcher.unbind('event', key1)).toBe(false); expect(cb1.calls).toBe(1); expect(dispatcher.unbind('event', key3)).toBe(false); expect(cb3.calls).toBe(1); expect(dispatcher.unbind('event', key5)).toBe(false); expect(cb5.calls).toBe(1); expect(dispatcher.unbind('event', key4)).toBe(false); }); it("should only be called once", () => { let onceCalls = 0, normalCalls = 0; dispatcher.once('event', () => { // empty }); dispatcher.once('event', () => { onceCalls += 1; }); dispatcher.once('event', () => { // empty }); dispatcher.bind('event', () => { normalCalls += 1; }); dispatcher.trigger('event'); dispatcher.trigger('event'); dispatcher.trigger('event'); dispatcher.trigger('event'); expect(onceCalls).toBe(1); expect(normalCalls).toBe(4); }); it("should only be called once with nested event triggers", () => { let onceCalls = 0, normalCalls = 0; const key: number = dispatcher.once('event', () => { dispatcher.trigger('event'); }), cb: any = dispatcher.getListener('event', key); dispatcher.trigger('event'); expect(cb.calls).toBe(1); }); it("should pass arguments", () => { const key = dispatcher.once('event', (num, arr, obj) => { expect(num).toBe(1); expect(arr[0]).toBe(1); expect(arr[1]).toBe(2); expect(arr[2]).toBe(3); expect(obj.foo).toBe('bar'); }), cb = dispatcher.getListener('event', key); dispatcher.trigger('event', 1, [1,2,3], {foo:'bar'}); }); it("cannot call a once event more than once", () => { const key: number = dispatcher.once('event', () => {}), cb: any = dispatcher.getListener('event', key); dispatcher.trigger('event'); expect(cb.call()).toBe(false); expect(cb.calls).toBe(1); }); it("should not unbind anything and return 0", () => { expect(dispatcher.unbindWithContext('event', null)).toBe(0); }); it("should not trigger events that don't exist", () => { expect(dispatcher.trigger('event')).toBe(undefined); }); it("should trigger events in the correct order", () => { let check: number = 1; dispatcher.bind('event', () => { expect(check).toBe(1); check++; }); dispatcher.bind('event', () => { expect(check).toBe(2); check++; }); dispatcher.bind('event', () => { expect(check).toBe(3); check++; }); dispatcher.bind('event', () => { expect(check).toBe(4); check++; }); dispatcher.bind('event', () => { expect(check).toBe(5); }); dispatcher.trigger('event'); }); });