OZG-7473 improve code

Based on CR comment.

alfa-client/libs/admin/aggregation-mapping/src/lib/aggregation-mapping-list-container/aggregation-mapping-list/aggregation-mapping-list.component.spec.ts

@@ -49,12 +49,13 @@ describe('AggregationMappingListComponent', () => {
     });
 
     it('should have spinner with state resource', () => {
-      const comp = getElementFromFixtureByType(fixture, SpinnerComponent);
+      const comp: SpinnerComponent = getElementFromFixtureByType(fixture, SpinnerComponent);
+
       expect(comp.stateResource).toEqual(aggregationMappingListStateResource);
     });
 
     it('should have list item with mapping', () => {
-      const comp = getElementFromFixtureByType(fixture, AggregationMappingListItemComponent);
+      const comp: AggregationMappingListItemComponent = getElementFromFixtureByType(fixture, AggregationMappingListItemComponent);
       expect(comp.aggregationMapping).toEqual(
         getEmbeddedResources(aggregationMappingListStateResource, AggregationMappingListLinkRel.LIST)[0],
       );

alfa-client/libs/admin/reporting-shared/src/lib/aggregation-mapping.service.spec.ts

@@ -97,6 +97,7 @@ describe('AggregationMappingService', () => {
 
   describe('get', () => {
     const stateResource: StateResource<AggregationMappingResource> = createStateResource(createAggregationMappingResource());
+
     beforeEach(() => {
       resourceService.get = jest.fn().mockReturnValue(of(stateResource));
     });
@@ -108,9 +109,9 @@ describe('AggregationMappingService', () => {
     });
 
     it('should emit resource', () => {
-      const got$: Observable<StateResource<AggregationMappingResource>> = service.get();
+      const stateResource$: Observable<StateResource<AggregationMappingResource>> = service.get();
 
-      expect(got$).toBeObservable(singleColdCompleted(stateResource));
+      expect(stateResource$).toBeObservable(singleColdCompleted(stateResource));
     });
   });