31 lines
584 B
TypeScript
31 lines
584 B
TypeScript
import * as emitter from '@/scripts/event';
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test('add listener and emit event', () => {
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const mockA1 = vi.fn();
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const mockA2 = vi.fn();
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const mockB = vi.fn();
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emitter.on('a', mockA1);
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emitter.on('a', mockA2);
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emitter.on('b', mockB);
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emitter.emit('a');
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expect(mockA1).toBeCalledTimes(1);
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expect(mockA2).toBeCalledTimes(1);
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expect(mockB).not.toBeCalled();
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});
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test('not throw for un-existed event', () => {
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emitter.emit('c');
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});
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test('unsubscribe event', () => {
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const mock = vi.fn();
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const off = emitter.on('c', mock);
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off();
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expect(mock).not.toBeCalled();
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});
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