[BP-841] Mock http response in failed unit test

Signed-off-by: Christopher Keim <keim@develop-group.de>
diff --git a/src/app/standby-schedule/dialogs/calculate-dialog/calculate-dialog.component.spec.ts b/src/app/standby-schedule/dialogs/calculate-dialog/calculate-dialog.component.spec.ts
index de44143..29b0024 100644
--- a/src/app/standby-schedule/dialogs/calculate-dialog/calculate-dialog.component.spec.ts
+++ b/src/app/standby-schedule/dialogs/calculate-dialog/calculate-dialog.component.spec.ts
@@ -1,12 +1,17 @@
 /********************************************************************************
- * Copyright © 2018 Mettenmeier GmbH.
+ * Copyright © 2018 Mettenmeier GmbH and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0.
  *
  * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *   Mettenmeier GmbH - initial implementation
+ *   Basys GmbH - automatic report generation implementation
  ********************************************************************************/
+
 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { NgbModule, NgbActiveModal } from '@ng-bootstrap/ng-bootstrap';
@@ -14,10 +19,14 @@
 import { CalculateDialogComponent } from './calculate-dialog.component';
 import { SharedModule } from '@shared/shared.module';
 import { ModalTransferObject } from '@shared/model/ModalTransferObject';
+import {MasterdataService} from '@masterdata/services/masterdata.service';
+import {UserObject} from '@shared/model/UserObject';
+import {of} from 'rxjs';
 
 describe('CalculateDialogComponent', () => {
   let component: CalculateDialogComponent;
   let fixture: ComponentFixture<CalculateDialogComponent>;
+  const user: UserObject[] = [];
 
   beforeEach(async(() => {
     TestBed.configureTestingModule({
@@ -29,14 +38,16 @@
       providers: [
         NgbActiveModal
       ]
-    })
-      .compileComponents();
+    }).compileComponents();
   }));
 
   beforeEach(() => {
     fixture = TestBed.createComponent(CalculateDialogComponent);
     component = fixture.componentInstance;
+    const masterService: MasterdataService = TestBed.get(MasterdataService);
+    spyOn(masterService, 'getStandbygroupUniqueUser').and.returnValue(of(user));
     component.form.patchValue({ standbyGroupId: 1 });
+
     fixture.detectChanges();
   });