it('removes all subscriptions of a certain type', function() {
var subscriber = new EventSubscriptionVendor();
subscriber.addSubscription('type1', new EventSubscription(subscriber));
subscriber.addSubscription('type1', new EventSubscription(subscriber));
expect(subscriber.getSubscriptionsForType('type1').length).toBe(2);
subscriber.removeAllSubscriptions('type1');
expect(subscriber.getSubscriptionsForType('type1'))
.toBe(undefined);
});
/**
* Adds a listener to be invoked when events of the specified type are
* emitted. An optional calling context may be provided. The data arguments
* emitted will be passed to the listener function.
*
* TODO: Annotate the listener arg's type. This is tricky because listeners
* can be invoked with varargs.
*
* @param {string} eventType - Name of the event to listen to
* @param {function} listener - Function to invoke when the specified event is
* emitted
* @param {*} context - Optional context object to use when invoking the
* listener
*/
addListener(
eventType: string, listener: Function, context: ?Object): EmitterSubscription {
return (this._subscriber.addSubscription(
eventType,
new EmitterSubscription(this, this._subscriber, listener, context)
) : any);
}
it('removes a subscription', function() {
var subscriber = new EventSubscriptionVendor();
var subscription1 = new EventSubscription(subscriber);
subscription1.is1 = true;
subscriber.addSubscription('type1', subscription1);
var subscription2 = new EventSubscription(subscriber);
subscription2.is1 = false;
subscriber.addSubscription('type1', subscription2);
expect(subscriber.getSubscriptionsForType('type1').length).toBe(2);
subscriber.removeSubscription(subscription1);
var subscriptions = subscriber.getSubscriptionsForType('type1');
var allempty = true;
for (var key in subscriptions) {
if (subscriptions[key]) {
allempty = false;
expect(subscriptions[key].is1).toBeFalsy();
}
}
expect(allempty).toBeFalsy();
});
it('adds subscriptions keyed on type', function() {
var subscriber = new EventSubscriptionVendor();
subscriber.addSubscription('type1', new EventSubscription(subscriber));
subscriber.addSubscription('type2', new EventSubscription(subscriber));
expect(subscriber.getSubscriptionsForType('type1').length).toBe(1);
});