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import { HttpClientTestingModule } from '@angular/common/http/testing';
import { fakeAsync, TestBed, tick } from '@angular/core/testing';
import { ToastrModule, ToastrService } from 'ngx-toastr';
import { of, throwError } from 'rxjs';
import { configureTestBed, PrometheusHelper } from '~/testing/unit-test-helper';
import { PrometheusService } from '../api/prometheus.service';
import { NotificationType } from '../enum/notification-type.enum';
import { CdNotificationConfig } from '../models/cd-notification';
import { AlertmanagerNotification } from '../models/prometheus-alerts';
import { SharedModule } from '../shared.module';
import { NotificationService } from './notification.service';
import { PrometheusAlertFormatter } from './prometheus-alert-formatter';
import { PrometheusNotificationService } from './prometheus-notification.service';
describe('PrometheusNotificationService', () => {
let service: PrometheusNotificationService;
let notificationService: NotificationService;
let notifications: AlertmanagerNotification[];
let prometheusService: PrometheusService;
let prometheus: PrometheusHelper;
let shown: CdNotificationConfig[];
let getNotificationSinceMock: Function;
const toastFakeService = {
error: () => true,
info: () => true,
success: () => true
};
configureTestBed({
imports: [ToastrModule.forRoot(), SharedModule, HttpClientTestingModule],
providers: [
PrometheusNotificationService,
PrometheusAlertFormatter,
{ provide: ToastrService, useValue: toastFakeService }
]
});
beforeEach(() => {
prometheus = new PrometheusHelper();
service = TestBed.inject(PrometheusNotificationService);
service['notifications'] = [];
notificationService = TestBed.inject(NotificationService);
shown = [];
spyOn(notificationService, 'show').and.callThrough();
spyOn(notificationService, 'save').and.callFake((n) => shown.push(n));
spyOn(window, 'setTimeout').and.callFake((fn: Function) => fn());
prometheusService = TestBed.inject(PrometheusService);
getNotificationSinceMock = () => of(notifications);
spyOn(prometheusService, 'getNotifications').and.callFake(() => getNotificationSinceMock());
notifications = [prometheus.createNotification()];
});
it('should create', () => {
expect(service).toBeTruthy();
});
describe('getLastNotification', () => {
it('returns an empty object on the first call', () => {
service.refresh();
expect(prometheusService.getNotifications).toHaveBeenCalledWith(undefined);
expect(service['notifications'].length).toBe(1);
});
it('returns last notification on any other call', () => {
service.refresh();
notifications = [prometheus.createNotification(1, 'resolved')];
service.refresh();
expect(prometheusService.getNotifications).toHaveBeenCalledWith(service['notifications'][0]);
expect(service['notifications'].length).toBe(2);
notifications = [prometheus.createNotification(2)];
service.refresh();
notifications = [prometheus.createNotification(3, 'resolved')];
service.refresh();
expect(prometheusService.getNotifications).toHaveBeenCalledWith(service['notifications'][2]);
expect(service['notifications'].length).toBe(4);
});
});
it('notifies not on the first call', () => {
service.refresh();
expect(notificationService.save).not.toHaveBeenCalled();
});
it('notifies should not call the api again if it failed once', () => {
getNotificationSinceMock = () => throwError(new Error('Test error'));
service.refresh();
expect(prometheusService.getNotifications).toHaveBeenCalledTimes(1);
expect(service['backendFailure']).toBe(true);
service.refresh();
expect(prometheusService.getNotifications).toHaveBeenCalledTimes(1);
service['backendFailure'] = false;
});
describe('looks of fired notifications', () => {
const asyncRefresh = () => {
service.refresh();
tick(20);
};
const expectShown = (expected: object[]) => {
tick(500);
expect(shown.length).toBe(expected.length);
expected.forEach((e, i) =>
Object.keys(e).forEach((key) => expect(shown[i][key]).toEqual(expected[i][key]))
);
};
beforeEach(() => {
service.refresh();
});
it('notifies on the second call', () => {
service.refresh();
expect(notificationService.show).toHaveBeenCalledTimes(1);
});
it('notify looks on single notification with single alert like', fakeAsync(() => {
asyncRefresh();
expectShown([
new CdNotificationConfig(
NotificationType.error,
'alert0 (active)',
'alert0 is firing ' + prometheus.createLink('http://alert0'),
undefined,
'Prometheus'
)
]);
}));
it('raises multiple pop overs for a single notification with multiple alerts', fakeAsync(() => {
asyncRefresh();
notifications[0].alerts.push(prometheus.createNotificationAlert('alert1', 'resolved'));
asyncRefresh();
expectShown([
new CdNotificationConfig(
NotificationType.error,
'alert0 (active)',
'alert0 is firing ' + prometheus.createLink('http://alert0'),
undefined,
'Prometheus'
),
new CdNotificationConfig(
NotificationType.success,
'alert1 (resolved)',
'alert1 is resolved ' + prometheus.createLink('http://alert1'),
undefined,
'Prometheus'
)
]);
}));
it('should raise multiple notifications if they do not look like each other', fakeAsync(() => {
notifications[0].alerts.push(prometheus.createNotificationAlert('alert1'));
notifications.push(prometheus.createNotification());
notifications[1].alerts.push(prometheus.createNotificationAlert('alert2'));
asyncRefresh();
expectShown([
new CdNotificationConfig(
NotificationType.error,
'alert0 (active)',
'alert0 is firing ' + prometheus.createLink('http://alert0'),
undefined,
'Prometheus'
),
new CdNotificationConfig(
NotificationType.error,
'alert1 (active)',
'alert1 is firing ' + prometheus.createLink('http://alert1'),
undefined,
'Prometheus'
),
new CdNotificationConfig(
NotificationType.error,
'alert2 (active)',
'alert2 is firing ' + prometheus.createLink('http://alert2'),
undefined,
'Prometheus'
)
]);
}));
it('only shows toasties if it got new data', () => {
service.refresh();
expect(notificationService.save).toHaveBeenCalledTimes(1);
notifications = [];
service.refresh();
service.refresh();
expect(notificationService.save).toHaveBeenCalledTimes(1);
notifications = [prometheus.createNotification()];
service.refresh();
expect(notificationService.save).toHaveBeenCalledTimes(2);
service.refresh();
expect(notificationService.save).toHaveBeenCalledTimes(3);
});
it('filters out duplicated and non user visible changes in notifications', fakeAsync(() => {
asyncRefresh();
// Return 2 notifications with 3 duplicated alerts and 1 non visible changed alert
const secondAlert = prometheus.createNotificationAlert('alert0');
secondAlert.endsAt = new Date().toString(); // Should be ignored as it's not visible
notifications[0].alerts.push(secondAlert);
notifications.push(prometheus.createNotification());
notifications[1].alerts.push(prometheus.createNotificationAlert('alert0'));
notifications[1].notified = 'by somebody else';
asyncRefresh();
expectShown([
new CdNotificationConfig(
NotificationType.error,
'alert0 (active)',
'alert0 is firing ' + prometheus.createLink('http://alert0'),
undefined,
'Prometheus'
)
]);
}));
});
});
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