45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
const EventEmitterPubSub = require('../lib/Adapters/PubSub/EventEmitterPubSub')
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.EventEmitterPubSub;
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describe('EventEmitterPubSub', function() {
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it('can publish and subscribe', function() {
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const publisher = EventEmitterPubSub.createPublisher();
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const subscriber = EventEmitterPubSub.createSubscriber();
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subscriber.subscribe('testChannel');
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// Register mock checked for subscriber
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let isChecked = false;
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subscriber.on('message', function(channel, message) {
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isChecked = true;
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expect(channel).toBe('testChannel');
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expect(message).toBe('testMessage');
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});
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publisher.publish('testChannel', 'testMessage');
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// Make sure the callback is checked
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expect(isChecked).toBe(true);
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});
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it('can unsubscribe', function() {
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const publisher = EventEmitterPubSub.createPublisher();
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const subscriber = EventEmitterPubSub.createSubscriber();
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subscriber.subscribe('testChannel');
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subscriber.unsubscribe('testChannel');
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// Register mock checked for subscriber
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let isCalled = false;
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subscriber.on('message', function() {
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isCalled = true;
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});
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publisher.publish('testChannel', 'testMessage');
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// Make sure the callback is not called
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expect(isCalled).toBe(false);
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});
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it('can unsubscribe not subscribing channel', function() {
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const subscriber = EventEmitterPubSub.createSubscriber();
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// Make sure subscriber does not throw exception
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subscriber.unsubscribe('testChannel');
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});
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});
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