fix: fixed variable srv tests

public/app/features/templating/specs/variable_srv.test.ts

 import '../all';
 import { VariableSrv } from '../variable_srv';
+import { DashboardModel } from '../../dashboard/dashboard_model';
 import moment from 'moment';
 import $q from 'q';
 
@@ -56,10 +57,12 @@ describe('VariableSrv', function(this: any) {
           return getVarMockConstructor(ctr, model, ctx);
         };
 
-        ctx.variableSrv.init({
+        ctx.variableSrv.init(
+          new DashboardModel({
             templating: { list: [] },
             updateSubmenuVisibility: () => {},
-        });
+          })
+        );
 
         scenario.variable = ctx.variableSrv.createVariableFromModel(scenario.variableModel);
         ctx.variableSrv.addVariable(scenario.variable);

public/app/features/templating/specs/variable_srv_init.test.ts

@@ -2,6 +2,7 @@ import '../all';
 
 import _ from 'lodash';
 import { VariableSrv } from '../variable_srv';
+import { DashboardModel } from '../../dashboard/dashboard_model';
 import $q from 'q';
 
 describe('VariableSrv init', function(this: any) {
@@ -56,9 +57,9 @@ describe('VariableSrv init', function(this: any) {
         ctx.variableSrv.datasourceSrv = ctx.datasourceSrv;
 
         ctx.variableSrv.$location.search = () => scenario.urlParams;
-        ctx.variableSrv.dashboard = {
+        ctx.variableSrv.dashboard = new DashboardModel({
           templating: { list: scenario.variables },
-        };
+        });
 
         await ctx.variableSrv.init(ctx.variableSrv.dashboard);
 

public/app/features/templating/variable_srv.ts

@@ -18,7 +18,7 @@ export class VariableSrv {
 
   init(dashboard) {
     this.dashboard = dashboard;
-    this.dashboard.on('time-range-updated', this.onTimeRangeUpdated.bind(this));
+    this.dashboard.events.on('time-range-updated', this.onTimeRangeUpdated.bind(this));
 
     // create working class models representing variables
     this.variables = dashboard.templating.list = dashboard.templating.list.map(this.createVariableFromModel.bind(this));