302b73ae73
* test: add web helpers tests * fix: coverage report * test: add more tests * test: add more generated tests * chore: add more tests * test: add more tests
48 lines
1.2 KiB
TypeScript
48 lines
1.2 KiB
TypeScript
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import { EventEmitter } from './eventsService';
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test('should do nothing when no handlers for event', () => {
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const emitter = new EventEmitter();
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expect(() => {
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emitter.emit('nonExistentEvent', 'test data');
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}).not.toThrow();
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});
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test('should call all handlers for event', () => {
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const emitter = new EventEmitter();
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const handler1 = jest.fn();
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const handler2 = jest.fn();
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emitter.on('testEvent', handler1);
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emitter.on('testEvent', handler2);
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emitter.emit('testEvent', 'test data');
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expect(handler1).toHaveBeenCalledWith('test data');
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expect(handler2).toHaveBeenCalledWith('test data');
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});
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test('should remove handler for event', () => {
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const emitter = new EventEmitter();
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const handler = jest.fn();
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emitter.on('testEvent', handler);
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emitter.off('testEvent', handler);
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expect(emitter['handlers'].get('testEvent')).not.toContain(handler);
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});
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test('should add handler for event', () => {
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const emitter = new EventEmitter();
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const handler = jest.fn();
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emitter.on('testEvent', handler);
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expect(emitter['handlers'].has('testEvent')).toBe(true);
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expect(emitter['handlers'].get('testEvent')).toContain(handler);
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});
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