Ghost/ghost/admin/tests/unit/services/event-bus-test.js

/* jshint expr:true */
import {expect} from 'chai';
import {
    describeModule,
    it
} from 'ember-mocha';
import sinon from 'sinon';

describeModule(
    'service:event-bus',
    'Unit: Service: event-bus',
    {},
    function() {
        it('works', function () {
            let service = this.subject();
            let eventHandler = sinon.spy();

            service.subscribe('test-event', eventHandler);

            service.publish('test-event', 'test');

            service.unsubscribe('test-event', eventHandler);

            service.publish('test-event', 'test two');

            expect(
                eventHandler.calledOnce,
                'event handler only triggered once'
            ).to.be.true;

            expect(
                eventHandler.calledWith('test'),
                'event handler was passed correct arguments'
            ).to.be.true;
        });
    }
);