diff --git a/frontend/src/app/team-management/delete-user/delete-user.component.spec.ts b/frontend/src/app/team-management/delete-user/delete-user.component.spec.ts
index 7e47b7a521..2789db61e5 100644
--- a/frontend/src/app/team-management/delete-user/delete-user.component.spec.ts
+++ b/frontend/src/app/team-management/delete-user/delete-user.component.spec.ts
@@ -1,3 +1,118 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { UserService } from '../../services/user.service';
+import { team1 } from '../../shared/testData';
+import { DeleteUserComponent } from './delete-user.component';
+import { User } from '../../shared/types/model/User';
+import { of } from 'rxjs';
+
+export const testUserWithTeam: User = {
+  id: 1,
+  firstname: 'Bob',
+  lastname: 'Baumeister',
+  isOkrChampion: false,
+  userTeamList: [
+    {
+      id: 1,
+      team: team1,
+      isTeamAdmin: false,
+    },
+  ],
+  email: 'bob.baumeister@puzzle.ch',
+};
+
+export const testUserWithoutTeam: User = {
+  id: 2,
+  firstname: 'Hans',
+  lastname: 'Muster',
+  isOkrChampion: false,
+  userTeamList: [],
+  email: 'hans.muster@puzzle.ch',
+};
+
 describe('DeleteUserComponent', () => {
-  it('todo write tests', () => {});
+  let component: DeleteUserComponent;
+  let fixture: ComponentFixture<DeleteUserComponent>;
+
+  const userServiceMock = {
+    deleteUser: jest.fn(),
+  };
+
+  const matDialogMock = {
+    close: jest.fn(),
+    open: jest.fn(),
+  };
+
+  const matDialogRefMock = {
+    afterClosed: jest.fn(),
+  };
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [],
+      imports: [],
+      providers: [{ provide: UserService, useValue: userServiceMock }],
+    }).compileComponents();
+
+    fixture = TestBed.createComponent(DeleteUserComponent);
+    component = fixture.componentInstance;
+  });
+
+  it('should create component', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should return true if user is in a team', () => {
+    component.user = testUserWithTeam;
+    expect(component.isUserMemberOfTeams()).toBe(true);
+  });
+
+  it('should return false if user it not in a team', () => {
+    component.user = testUserWithoutTeam;
+    expect(component.isUserMemberOfTeams()).toBe(false);
+  });
+
+  it('should return false userOkrData is undefined', () => {
+    component.user = testUserWithoutTeam;
+    component.userOkrData = undefined;
+    expect(component.isUserOwnerOfKeyResults()).toBe(false);
+  });
+
+  it('should return true if userOkrData has no keyResults', () => {
+    component.user = testUserWithoutTeam;
+    component.userOkrData = {
+      keyResults: [],
+    };
+
+    expect(component.isUserOwnerOfKeyResults()).toBe(false);
+  });
+
+  it('should return true if user is owner of keyResults', () => {
+    component.user = testUserWithoutTeam;
+    component.userOkrData = {
+      keyResults: [
+        {
+          keyResultId: 100,
+          keyResultName: 'keyResult1',
+          objectiveId: 200,
+          objectiveName: 'objective1',
+        },
+      ],
+    };
+
+    expect(component.isUserOwnerOfKeyResults()).toBe(true);
+  });
+
+  it('should delete user if user is not in a team and user has no keyResults', () => {
+    component.user = testUserWithoutTeam;
+    component.userOkrData = {
+      keyResults: [],
+    };
+    matDialogMock.open.mockReturnValue(matDialogRefMock);
+    matDialogRefMock.afterClosed.mockReturnValue(of());
+    userServiceMock.deleteUser.mockReturnValue(of());
+
+    component.deleteUser();
+
+    setTimeout(() => expect(userServiceMock.deleteUser).toHaveBeenCalled(), 100);
+  });
 });
diff --git a/frontend/src/app/team-management/delete-user/delete-user.component.ts b/frontend/src/app/team-management/delete-user/delete-user.component.ts
index 827eb23d4c..d56d06f77f 100644
--- a/frontend/src/app/team-management/delete-user/delete-user.component.ts
+++ b/frontend/src/app/team-management/delete-user/delete-user.component.ts
@@ -17,7 +17,7 @@ import { UserOkrData } from '../../shared/types/model/UserOkrData';
 export class DeleteUserComponent implements OnInit {
   @Input({ required: true }) user!: User;
 
-  private userOkrData: UserOkrData | undefined;
+  userOkrData: UserOkrData | undefined;
 
   constructor(
     private readonly userService: UserService,
@@ -26,9 +26,7 @@ export class DeleteUserComponent implements OnInit {
   ) {}
 
   ngOnInit() {
-    this.userService.getUserOkrData(this.user).subscribe((okrData) => {
-      this.userOkrData = okrData;
-    });
+    this.userService.getUserOkrData(this.user).subscribe((okrData) => (this.userOkrData = okrData));
   }
 
   isUserMemberOfTeams(): boolean {