111731: Hide the search facets when there are no facet suggestions & the applied filters of that facet don't have the operator equals, authority or range (because those should be displayed in the facets)

src/app/shared/search/search-filters/search-filter/search-facet-filter/search-facet-filter.component.spec.ts

@@ -24,6 +24,8 @@ import { createSuccessfulRemoteDataObject$ } from '../../../../remote-data.utils
 import { AppliedFilter } from '../../../models/applied-filter.model';
 import { FacetValues } from '../../../models/facet-values.model';
 import { SearchFilterServiceStub } from '../../../../testing/search-filter-service.stub';
+import { cold } from 'jasmine-marbles';
+import { PageInfo } from '../../../../../core/shared/page-info.model';
 
 describe('SearchFacetFilterComponent', () => {
   let comp: SearchFacetFilterComponent;
@@ -32,6 +34,7 @@ describe('SearchFacetFilterComponent', () => {
   const value1 = 'testvalue1';
   const value2 = 'test2';
   const value3 = 'another value3';
+  const value4 = '52d629dc-7d2f-47b9-aa2d-258b92e45ae1';
   const mockFilterConfig: SearchFilterConfig = Object.assign(new SearchFilterConfig(), {
     name: filterName1,
     filterType: FilterType.text,
@@ -39,27 +42,39 @@ describe('SearchFacetFilterComponent', () => {
     isOpenByDefault: false,
     pageSize: 2
   });
+  const appliedFilter1: AppliedFilter = Object.assign(new AppliedFilter(), {
+    filter: filterName1,
+    operator: 'equals',
+    label: value1,
+    value: value1,
+  });
+  const appliedFilter2: AppliedFilter = Object.assign(new AppliedFilter(), {
+    filter: filterName1,
+    operator: 'equals',
+    label: value2,
+    value: value2,
+  });
+  const appliedFilter3: AppliedFilter = Object.assign(new AppliedFilter(), {
+    filter: filterName1,
+    operator: 'equals',
+    label: value3,
+    value: value3,
+  });
+  const appliedFilter4: AppliedFilter = Object.assign(new AppliedFilter(), {
+    filter: filterName1,
+    operator: 'notauthority',
+    label: value4,
+    value: value4,
+  });
   const values: Partial<FacetValues> = {
     appliedFilters: [
-      {
-        filter: filterName1,
-        operator: 'equals',
-        label: value1,
-        value: value1,
-      },
-      {
-        filter: filterName1,
-        operator: 'equals',
-        label: value2,
-        value: value2,
-      },
-      {
-        filter: filterName1,
-        operator: 'equals',
-        label: value3,
-        value: value3,
-      }
-    ]
+      appliedFilter1,
+      appliedFilter2,
+      appliedFilter3,
+    ],
+    pageInfo: Object.assign(new PageInfo(), {
+      currentPage: 0,
+    }),
   };
 
   const searchLink = '/search';
@@ -205,4 +220,26 @@ describe('SearchFacetFilterComponent', () => {
       expect(comp.filter).toEqual('');
     });
   });
+
+  describe('when new values are detected for a filter', () => {
+    let selectedValues$: BehaviorSubject<AppliedFilter[]>;
+
+    beforeEach(() => {
+      selectedValues$ = new BehaviorSubject([appliedFilter1, appliedFilter2, appliedFilter3]);
+      spyOn(searchService, 'getSelectedValuesForFilter').and.returnValue(selectedValues$);
+      comp.ngOnInit();
+    });
+
+    it('should updated the selectedAppliedFilters$ when they are AppliedFilters that should be displayed in the search facets', () => {
+      expect(comp.selectedAppliedFilters$).toBeObservable(cold('a', {
+        a: [appliedFilter1, appliedFilter2, appliedFilter3],
+      }));
+
+      selectedValues$.next([appliedFilter1, appliedFilter2, appliedFilter3, appliedFilter4]);
+
+      expect(comp.selectedAppliedFilters$).toBeObservable(cold('a', {
+        a: [appliedFilter1, appliedFilter2, appliedFilter3],
+      }));
+    });
+  });
 });

src/app/shared/search/search-filters/search-filter/search-facet-filter/search-facet-filter.component.ts

@@ -20,6 +20,15 @@ import { currentPath } from '../../../../utils/route.utils';
 import { FacetValues } from '../../../models/facet-values.model';
 import { AppliedFilter } from '../../../models/applied-filter.model';
 
+/**
+ * The operators the {@link AppliedFilter} should have in order to be shown in the facets
+ */
+export const FACET_OPERATORS: string[] = [
+  'equals',
+  'authority',
+  'range',
+];
+
 @Component({
   selector: 'ds-search-facet-filter',
   template: ``,
@@ -104,7 +113,10 @@ export class SearchFacetFilterComponent implements OnInit, OnDestroy {
       this.searchOptions$.subscribe(() => this.updateFilterValueList()),
       this.retrieveFilterValues().subscribe(),
     );
-    this.selectedAppliedFilters$ = this.searchService.getSelectedValuesForFilter(this.filterConfig.name);
+    this.selectedAppliedFilters$ = this.searchService.getSelectedValuesForFilter(this.filterConfig.name).pipe(
+      map((allAppliedFilters: AppliedFilter[]) => allAppliedFilters.filter((appliedFilter: AppliedFilter) => FACET_OPERATORS.includes(appliedFilter.operator))),
+      distinctUntilChanged((previous: AppliedFilter[], next: AppliedFilter[]) => JSON.stringify(previous) === JSON.stringify(next)),
+    );
   }
 
   /**

src/app/shared/search/search-filters/search-filter/search-filter.component.spec.ts

@@ -1,7 +1,7 @@
 import { ChangeDetectionStrategy, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
+import { RouterModule } from '@angular/router';
 
 import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
-import { RouterTestingModule } from '@angular/router/testing';
 import { TranslateModule } from '@ngx-translate/core';
 import { Observable, of as observableOf } from 'rxjs';
 import { NoopAnimationsModule } from '@angular/platform-browser/animations';
@@ -16,10 +16,22 @@ import { SequenceService } from '../../../../core/shared/sequence.service';
 import { BrowserOnlyMockPipe } from '../../../testing/browser-only-mock.pipe';
 import { SearchServiceStub } from '../../../testing/search-service.stub';
 import { SearchFilterServiceStub } from '../../../testing/search-filter-service.stub';
+import { cold } from 'jasmine-marbles';
+import { AppliedFilter } from '../../models/applied-filter.model';
+import { FacetValues } from '../../models/facet-values.model';
+import { createSuccessfulRemoteDataObject$ } from '../../../remote-data.utils';
 
 describe('SearchFilterComponent', () => {
   let comp: SearchFilterComponent;
   let fixture: ComponentFixture<SearchFilterComponent>;
+
+  const appliedFilter1: AppliedFilter = Object.assign(new AppliedFilter(), {
+    operator: 'equals',
+  });
+  const appliedFilter2: AppliedFilter = Object.assign(new AppliedFilter(), {
+    operator: 'notauthority',
+  });
+
   const filterName1 = 'test name';
 
   const mockFilterConfig: SearchFilterConfig = Object.assign(new SearchFilterConfig(), {
@@ -30,16 +42,21 @@ describe('SearchFilterComponent', () => {
   });
   let searchFilterService: SearchFilterServiceStub;
   let sequenceService;
-  const mockResults = observableOf(['test', 'data']);
   let searchService: SearchServiceStub;
+  let searchConfigurationService: SearchConfigurationServiceStub;
 
   beforeEach(waitForAsync(() => {
     searchFilterService = new SearchFilterServiceStub();
     searchService = new SearchServiceStub();
+    searchConfigurationService = new SearchConfigurationServiceStub();
     sequenceService = jasmine.createSpyObj('sequenceService', { next: 17 });
 
     TestBed.configureTestingModule({
-      imports: [TranslateModule.forRoot(), RouterTestingModule.withRoutes([]), NoopAnimationsModule],
+      imports: [
+        NoopAnimationsModule,
+        RouterModule.forRoot([]),
+        TranslateModule.forRoot(),
+      ],
       declarations: [
         SearchFilterComponent,
         BrowserOnlyMockPipe,
@@ -47,7 +64,7 @@ describe('SearchFilterComponent', () => {
       providers: [
         { provide: SearchService, useValue: searchService },
         { provide: SearchFilterService, useValue: searchFilterService },
-        { provide: SEARCH_CONFIG_SERVICE, useValue: new SearchConfigurationServiceStub() },
+        { provide: SEARCH_CONFIG_SERVICE, useValue: searchConfigurationService },
         { provide: SequenceService, useValue: sequenceService },
       ],
       schemas: [CUSTOM_ELEMENTS_SCHEMA],
@@ -57,7 +74,6 @@ describe('SearchFilterComponent', () => {
   }));
 
   beforeEach(() => {
-    spyOn(searchService, 'getFacetValuesFor').and.returnValue(mockResults);
     fixture = TestBed.createComponent(SearchFilterComponent);
     comp = fixture.componentInstance; // SearchPageComponent test instance
     comp.filter = mockFilterConfig;
@@ -121,4 +137,59 @@ describe('SearchFilterComponent', () => {
       sub.unsubscribe();
     });
   });
+
+  describe('isActive', () => {
+    it('should return true when there are facet value suggestions & no valid applied values', () => {
+      spyOn(searchService, 'getFacetValuesFor').and.returnValue(createSuccessfulRemoteDataObject$(Object.assign(new FacetValues(), {
+        pageInfo: {
+          totalElements: 5,
+        },
+      } as FacetValues)));
+      comp.appliedFilters$ = observableOf([appliedFilter2]);
+
+      expect(comp.isActive()).toBeObservable(cold('(tt)', {
+        t: true,
+      }));
+    });
+
+    it('should return false when there are no facet value suggestions & no valid applied values', () => {
+      spyOn(searchService, 'getFacetValuesFor').and.returnValue(createSuccessfulRemoteDataObject$(Object.assign(new FacetValues(), {
+        pageInfo: {
+          totalElements: 0,
+        },
+      } as FacetValues)));
+      comp.appliedFilters$ = observableOf([appliedFilter2]);
+
+      expect(comp.isActive()).toBeObservable(cold('(tf)', {
+        t: true,
+        f: false,
+      }));
+    });
+
+    it('should return true when there are no facet value suggestions & but there are valid applied values', () => {
+      spyOn(searchService, 'getFacetValuesFor').and.returnValue(createSuccessfulRemoteDataObject$(Object.assign(new FacetValues(), {
+        pageInfo: {
+          totalElements: 0,
+        },
+      } as FacetValues)));
+      comp.appliedFilters$ = observableOf([appliedFilter1, appliedFilter2]);
+
+      expect(comp.isActive()).toBeObservable(cold('(tt)', {
+        t: true,
+      }));
+    });
+
+    it('should return true when there are facet value suggestions & there are valid applied values', () => {
+      spyOn(searchService, 'getFacetValuesFor').and.returnValue(createSuccessfulRemoteDataObject$(Object.assign(new FacetValues(), {
+        pageInfo: {
+          totalElements: 5,
+        },
+      } as FacetValues)));
+      comp.appliedFilters$ = observableOf([appliedFilter1, appliedFilter2]);
+
+      expect(comp.isActive()).toBeObservable(cold('(tt)', {
+        t: true,
+      }));
+    });
+  });
 });

src/app/shared/search/search-filters/search-filter/search-filter.component.ts

@@ -15,6 +15,7 @@ import { FacetValues } from '../../models/facet-values.model';
 import { RemoteData } from '../../../../core/data/remote-data';
 import { AppliedFilter } from '../../models/applied-filter.model';
 import { SearchOptions } from '../../models/search-options.model';
+import { FACET_OPERATORS } from './search-facet-filter/search-facet-filter.component';
 
 @Component({
   selector: 'ds-search-filter',
@@ -166,13 +167,13 @@ export class SearchFilterComponent implements OnInit, OnDestroy {
    * Check if a given filter is supposed to be shown or not
    * @returns {Observable<boolean>} Emits true whenever a given filter config should be shown
    */
-  private isActive(): Observable<boolean> {
+  isActive(): Observable<boolean> {
     return combineLatest([
       this.appliedFilters$,
       this.searchConfigService.searchOptions,
     ]).pipe(
       switchMap(([selectedValues, options]: [AppliedFilter[], SearchOptions]) => {
-        if (isNotEmpty(selectedValues)) {
+        if (isNotEmpty(selectedValues.filter((appliedFilter: AppliedFilter) => FACET_OPERATORS.includes(appliedFilter.operator)))) {
           return observableOf(true);
         } else {
           return this.searchService.getFacetValuesFor(this.filter, 1, options).pipe(

src/app/shared/testing/search-configuration-service.stub.ts

@@ -4,6 +4,8 @@ import {
   FilterConfig,
   SearchConfig,
 } from '../../core/shared/search/search-filters/search-config.model';
+import { SearchOptions } from '../search/models/search-options.model';
+import { PaginatedSearchOptions } from '../search/models/paginated-search-options.model';
 
 /**
  * Stub class of {@link SearchConfigurationService}
@@ -12,8 +14,8 @@ export class SearchConfigurationServiceStub {
 
   public paginationID = 'test-id';
 
-  private searchOptions: BehaviorSubject<any> = new BehaviorSubject<any>({});
-  private paginatedSearchOptions: BehaviorSubject<any> = new BehaviorSubject<any>({});
+  public searchOptions: BehaviorSubject<SearchOptions> = new BehaviorSubject(new SearchOptions({}));
+  public paginatedSearchOptions: BehaviorSubject<PaginatedSearchOptions> = new BehaviorSubject(new PaginatedSearchOptions({}));
 
   getCurrentFrontendFilters() {
     return observableOf([]);