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Copy pathfromRef.spec.ts
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271 lines (244 loc) · 7.76 KB
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import { DatabaseReference } from '../interfaces';
import { AngularFireModule, FirebaseApp, ɵZoneScheduler } from '@angular/fire';
import { AngularFireDatabase, AngularFireDatabaseModule, fromRef } from '../public_api';
import { TestBed } from '@angular/core/testing';
import { COMMON_CONFIG } from '../../test-config';
import { take } from 'rxjs/operators';
import { TestScheduler } from 'rxjs/testing';
import { rando } from '../../firestore/utils.spec';
describe('fromRef', () => {
let app: FirebaseApp;
let db: AngularFireDatabase;
let ref: (path: string) => DatabaseReference;
let batch = {};
const items = [{ name: 'one' }, { name: 'two' }, { name: 'three' }].map(item => ({ key: rando(), ...item }));
Object.keys(items).forEach((key) => {
const itemValue = items[key];
batch[itemValue.key] = itemValue;
});
// make batch immutable to preserve integrity
batch = Object.freeze(batch);
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
AngularFireModule.initializeApp(COMMON_CONFIG, rando()),
AngularFireDatabaseModule
],
providers: [
{ provide: URL, useValue: 'http://localhost:9000' }
]
});
app = TestBed.inject(FirebaseApp);
db = TestBed.inject(AngularFireDatabase);
ref = (path: string) => db.database.ref(path);
});
afterEach(() => {
app.delete();
});
it('it should be async by default', (done) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'value');
let count = 0;
expect(count).toEqual(0);
const sub = obs.subscribe(() => {
count = count + 1;
expect(count).toEqual(1);
sub.unsubscribe();
done();
});
expect(count).toEqual(0);
});
it('should take a scheduler', done => {
const itemRef = ref(rando());
itemRef.set(batch);
const testScheduler = new TestScheduler((actual, expected) => {
expect(actual).toEqual(expected);
});
spyOn(testScheduler, 'schedule').and.callThrough();
const obs = fromRef(itemRef, 'value', 'once', testScheduler);
expect(testScheduler.schedule).not.toHaveBeenCalled();
obs.subscribe(() => {
expect(testScheduler.schedule).toHaveBeenCalled();
done();
}, err => {
console.error(err);
expect(false).toEqual(true, 'Shouldnt error');
done();
}, () => {
expect(testScheduler.schedule).toHaveBeenCalled();
done();
});
testScheduler.flush();
});
it('should schedule completed and error correctly', done => {
const testScheduler = new TestScheduler((actual, expected) => {
expect(actual).toEqual(expected);
});
spyOn(testScheduler, 'schedule').and.callThrough();
// Error
const errorObservable = fromRef({
once: (event, snap, err) => err()
} as any,
'value',
'once',
testScheduler
);
errorObservable.subscribe(() => {
fail('Should not emit');
}, () => {
expect(testScheduler.schedule).toHaveBeenCalled();
}, () => {
fail('Should not complete');
});
testScheduler.flush();
// Completed
const itemRef = ref(rando());
itemRef.set(batch);
const scheduler = new ɵZoneScheduler(Zone.current.fork({
name: 'ExpectedZone'
}));
const completeObservable = fromRef(
itemRef,
'value',
'once',
scheduler
);
completeObservable.subscribe(
() => {
},
() => fail('Should not error'),
() => expect(Zone.current.name).toEqual('ExpectedZone')
);
testScheduler.flush();
done();
});
it('it should should handle non-existence', (done) => {
const itemRef = ref(rando());
itemRef.set({});
const obs = fromRef(itemRef, 'value');
obs.pipe(take(1)).subscribe(change => {
expect(change.payload.exists()).toEqual(false);
expect(change.payload.val()).toEqual(null);
}).add(done);
});
it('once should complete', (done) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'value', 'once');
obs.subscribe(() => {
}, () => {
}, done);
});
it('it should listen and then unsubscribe', (done) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'value');
let count = 0;
const sub = obs.subscribe(() => {
count = count + 1;
// hard coding count to one will fail if the unsub
// doesn't actually unsub
expect(count).toEqual(1);
done();
sub.unsubscribe();
itemRef.push({ name: 'anotha one' });
});
});
describe('events', () => {
it('should stream back a child_added event', async (done: any) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'child_added');
let count = 0;
const sub = obs.subscribe(change => {
count = count + 1;
const { type, payload } = change;
expect(type).toEqual('child_added');
expect(payload.val()).toEqual(batch[payload.key]);
if (count === items.length) {
done();
sub.unsubscribe();
expect(sub.closed).toEqual(true);
}
});
});
it('should stream back a child_changed event', async (done: any) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'child_changed');
const name = 'look at what you made me do';
const key = items[0].key;
const sub = obs.subscribe(change => {
const { type, payload } = change;
expect(type).toEqual('child_changed');
expect(payload.key).toEqual(key);
expect(payload.val()).toEqual({ key, name });
sub.unsubscribe();
done();
});
itemRef.child(key).update({ name });
});
it('should stream back a child_removed event', async (done: any) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'child_removed');
const key = items[0].key;
const name = items[0].name;
const sub = obs.subscribe(change => {
const { type, payload } = change;
expect(type).toEqual('child_removed');
expect(payload.key).toEqual(key);
expect(payload.val()).toEqual({ key, name });
sub.unsubscribe();
done();
});
itemRef.child(key).remove();
});
it('should stream back a child_moved event', async (done: any) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'child_moved');
const key = items[2].key;
const name = items[2].name;
const sub = obs.subscribe(change => {
const { type, payload } = change;
expect(type).toEqual('child_moved');
expect(payload.key).toEqual(key);
expect(payload.val()).toEqual({ key, name });
sub.unsubscribe();
done();
});
itemRef.child(key).setPriority(-100, () => {
});
});
it('should stream back a value event', (done: any) => {
const itemRef = ref(rando());
itemRef.set(batch);
const obs = fromRef(itemRef, 'value');
const sub = obs.subscribe(change => {
const { type, payload } = change;
expect(type).toEqual('value');
expect(payload.val()).toEqual(batch);
done();
sub.unsubscribe();
expect(sub.closed).toEqual(true);
});
});
it('should stream back query results', (done: any) => {
const itemRef = ref(rando());
itemRef.set(batch);
const query = itemRef.orderByChild('name').equalTo(items[0].name);
const obs = fromRef(query, 'value');
obs.subscribe(change => {
let child = null;
change.payload.forEach(snap => {
child = snap.val();
return true;
});
expect(child).toEqual(items[0]);
done();
});
});
});
});