fix: fixed label resolver implementation and adjusted tests

src/app/shared/label.resolver.spec.ts

@@ -1,9 +1,10 @@
+import { Observable, of } from 'rxjs'
 import { LabelResolver } from './label.resolver'
 
 let labelResolver: LabelResolver
 
 describe('LabelResolver', () => {
-  const translateServiceSpy = jasmine.createSpyObj('TranslateService', ['instant'])
+  const translateServiceSpy = jasmine.createSpyObj('TranslateService', ['get'])
 
   const activatedRouteSpy = jasmine.createSpyObj('ActivatedRouteSnapshot', [], {
     routeConfig: {
@@ -16,28 +17,31 @@ describe('LabelResolver', () => {
 
   beforeEach(async () => {
     labelResolver = new LabelResolver(translateServiceSpy)
-    translateServiceSpy.instant.calls.reset()
+    translateServiceSpy.get.calls.reset()
     const dataSpy = Object.getOwnPropertyDescriptor(activatedRouteSpy, 'data')?.get as jasmine.Spy<() => {}>
     dataSpy.and.returnValue({})
   })
 
-  it('should translate if breadcrumb is present', () => {
+  it('should translate if breadcrumb is present', (done: DoneFn) => {
     const dataSpy = Object.getOwnPropertyDescriptor(activatedRouteSpy, 'data')?.get as jasmine.Spy<() => {}>
     dataSpy.and.returnValue({
       breadcrumb: 'defined'
     })
-    translateServiceSpy.instant.and.returnValue('translation')
+    translateServiceSpy.get.and.returnValue(of('translation'))
 
-    const result = labelResolver.resolve(activatedRouteSpy, routerStateSpy)
+    const obsResult = labelResolver.resolve(activatedRouteSpy, routerStateSpy) as Observable<string>
+    obsResult.subscribe((result) => {
+      expect(result).toBe('translation')
+      expect(translateServiceSpy.get).toHaveBeenCalledOnceWith('defined')
 
-    expect(result).toBe('translation')
-    expect(translateServiceSpy.instant).toHaveBeenCalledOnceWith('defined')
+      done()
+    })
   })
 
   it('should use route path if breadcrumb is not present', () => {
     const result = labelResolver.resolve(activatedRouteSpy, routerStateSpy)
 
     expect(result).toBe('path')
-    expect(translateServiceSpy.instant).toHaveBeenCalledTimes(0)
+    expect(translateServiceSpy.get).toHaveBeenCalledTimes(0)
   })
 })

src/app/shared/label.resolver.ts

@@ -1,19 +1,15 @@
 import { Injectable } from '@angular/core'
 import { ActivatedRouteSnapshot, Resolve, RouterStateSnapshot } from '@angular/router'
 import { TranslateService } from '@ngx-translate/core'
-import { Observable } from 'rxjs'
+import { Observable, map } from 'rxjs'
 
 //dont use `providedIn root` - wont work when we are in shell
 @Injectable()
 export class LabelResolver implements Resolve<string> {
   constructor(private translate: TranslateService) {}
-  resolve(route: ActivatedRouteSnapshot, _state: RouterStateSnapshot): string | Observable<string> | Promise<string> {
-    return route.data['breadcrumb'] ? this.translate.instant(route.data['breadcrumb']) : route.routeConfig?.path
-    /* TODO: use this if tests are running with it.
   resolve(route: ActivatedRouteSnapshot, _state: RouterStateSnapshot): string | Observable<string> | Promise<string> {
     return route.data['breadcrumb']
       ? this.translate.get(route.data['breadcrumb']).pipe(map((t) => t.toString()))
       : route.routeConfig?.path ?? ''
-    */
   }
 }