Mailspring/app/spec/models/query-subscription-pool-spec.ts
Ben Gotow 149b389508
Replace Babel with TypeScript compiler, switch entire app to TypeScript 🎉 (#1404)
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2019-03-04 11:03:12 -08:00

60 lines
2.4 KiB
TypeScript

import QuerySubscriptionPool from '../../src/flux/models/query-subscription-pool';
import DatabaseStore from '../../src/flux/stores/database-store';
import { Label } from '../../src/flux/models/label';
describe('QuerySubscriptionPool', function QuerySubscriptionPoolSpecs() {
beforeEach(() => {
this.query = DatabaseStore.findAll<Label>(Label);
this.queryKey = this.query.sql();
QuerySubscriptionPool._subscriptions = {};
QuerySubscriptionPool._cleanupChecks = [];
});
describe('add', () => {
it('should add a new subscription with the callback', () => {
const callback = jasmine.createSpy('callback');
QuerySubscriptionPool.add(this.query, callback);
expect(QuerySubscriptionPool._subscriptions[this.queryKey]).toBeDefined();
const subscription = QuerySubscriptionPool._subscriptions[this.queryKey];
expect(subscription.hasCallback(callback)).toBe(true);
});
it('should yield database changes to the subscription', () => {
const callback = jasmine.createSpy('callback');
QuerySubscriptionPool.add(this.query, callback);
const subscription = QuerySubscriptionPool._subscriptions[this.queryKey];
spyOn(subscription, 'applyChangeRecord');
const record = { objectType: 'whateves' };
QuerySubscriptionPool._onChange(record);
expect(subscription.applyChangeRecord).toHaveBeenCalledWith(record);
});
describe('unsubscribe', () => {
it('should return an unsubscribe method', () => {
expect(QuerySubscriptionPool.add(this.query, () => {}) instanceof Function).toBe(true);
});
it('should remove the callback from the subscription', () => {
const cb = () => {};
const unsub = QuerySubscriptionPool.add(this.query, cb);
const subscription = QuerySubscriptionPool._subscriptions[this.queryKey];
expect(subscription.hasCallback(cb)).toBe(true);
unsub();
expect(subscription.hasCallback(cb)).toBe(false);
});
it("should wait before removing th subscription to make sure it's not reused", () => {
const unsub = QuerySubscriptionPool.add(this.query, () => {});
expect(QuerySubscriptionPool._subscriptions[this.queryKey]).toBeDefined();
unsub();
expect(QuerySubscriptionPool._subscriptions[this.queryKey]).toBeDefined();
advanceClock();
expect(QuerySubscriptionPool._subscriptions[this.queryKey]).toBeUndefined();
});
});
});
});