Fix failing TravisCI tests #106 (#107)

* add alert srv mock
* silent remove in test

.travis.yml

@@ -1,12 +1,8 @@
 language: node_js
-
 node_js:
   - "8"
-
-  before_script:
+before_script:
   - npm install
-
 script: npm test
-
 notifications:
   email: false

__mocks__/grafana/app/core/services/alert_srv.ts

@@ -0,0 +1,21 @@
+export class AlertSrv {
+  private $timeout;
+  private $sce;
+  private $rootScope;
+  private $modal;
+  list: any[];
+  /** @ngInject */
+  constructor($timeout: any, $sce: any, $rootScope: any, $modal: any) {}
+  init(): void {}
+  set(title: any, text: any, severity: any, timeout: any): {
+      title: any;
+      text: any;
+      severity: any;
+  } 
+  {
+    return { title: '', text: '', severity: '' }
+  }
+  clear(alert: any): void {}
+  clearAll(): void {}
+  showConfirmModal(payload: any): void {}
+}

src/services/analytic_service.ts

@@ -12,7 +12,8 @@ export class AnalyticService {
   private _isUp = false;
 
   constructor(
-    private _backendURL: string, private $http,
+    private _backendURL: string,
+    private $http,
     private _backendSrv: BackendSrv,
     private _alertSrv: AlertSrv
   ) {

tests/analytic_controller.jest.ts

@@ -19,7 +19,7 @@ describe('AnalyticController', function () {
   });
 
   it('should remove analytic unit with right id', async function () {
-    await analyticController.removeAnalyticUnit('2');
+    await analyticController.removeAnalyticUnit('2', true);
     for (let analyticUnit of analyticController.analyticUnits) {
       expect(analyticUnit.id).not.toBe('2');
     }

tests/setup_tests.ts

@@ -5,6 +5,7 @@ import { MetricExpanded } from '../src/models/metric';
 import { DatasourceRequest } from '../src/models/datasource';
 
 import { BackendSrv } from 'grafana/app/core/services/backend_srv';
+import { AlertSrv } from 'grafana/app/core/services/alert_srv';
 import { Emitter } from 'grafana/app/core/utils/emitter';
 
 
@@ -13,7 +14,7 @@ import { Emitter } from 'grafana/app/core/utils/emitter';
 
 var id = 0;
 
-const analyticService = new AnalyticService('', new BackendSrv({}, {}, {}, {}, {}));
+const analyticService = new AnalyticService('', {} , new BackendSrv({}, {}, {}, {}, {}), new AlertSrv());
 analyticService.postNewItem = async function (
   metric: MetricExpanded, datasourceRequest: DatasourceRequest,
   newItem: AnalyticUnit, panelId: number