observer-ax/test/observer.spec.ts

Patrón observable, event Bus.

import {
    ConcreteSubjectObserver,
    NotifyObject,
    Observer,
} from '../app';


describe("Test Case Observer", () => {
    class Concrete implements Observer {
        data: NotifyObject;
        options?: any;
        update(data: NotifyObject, options?: any) {
            this.data = data;
            this.options = options;
            expect(data).toBeDefined();
        }
        subscribe(callback: (data: any, options?: any) => any) {
            callback(this.data.data);
        }
    }
    beforeEach(() => { });

    it("test #1 => notify", async () => {
        try {
            const concretSubject = new ConcreteSubjectObserver();
            let clazz: Observer = new Concrete();
            concretSubject.asObserver().subscribe((data: any, options: any) => console.log("subscribe", data));
            concretSubject.attach(clazz);
            concretSubject.items = [{ data: { data: 'b' }, topic: "ALL", tries: 0 }];
            concretSubject.items = [{ data: { data: 'a' }, topic: "ALL", tries: 0 }];
            concretSubject.notify();
        } catch (error) {
            console.error(error);
            expect(error).toBeDefined();
        }
    });

    it("test #2 => notifyData", async () => {
        try {
            const concretSubject = new ConcreteSubjectObserver();
            let clazz: Observer = new Concrete();
            concretSubject.attach(clazz);
            concretSubject.notifyNow({ data: { data: 'c' }, topic: "ALL", tries: 0 });
        } catch (error) {
            console.error(error);
            expect(error).toBeDefined();
        }
    });
});