fixed some tests

src/app/shared/page-size-selector/page-size-selector.component.spec.ts

@@ -0,0 +1,89 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { of as observableOf } from 'rxjs';
+import { TranslateModule } from '@ngx-translate/core';
+import { RouterTestingModule } from '@angular/router/testing';
+import { ActivatedRoute } from '@angular/router';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { By } from '@angular/platform-browser';
+import { first, take } from 'rxjs/operators';
+import { PageSizeSelectorComponent } from './page-size-selector.component';
+import { PaginationComponentOptions } from '../pagination/pagination-component-options.model';
+import { SortDirection, SortOptions } from '../../core/cache/models/sort-options.model';
+import { EnumKeysPipe } from '../utils/enum-keys-pipe';
+import { VarDirective } from '../utils/var.directive';
+import { SEARCH_CONFIG_SERVICE } from '../../+my-dspace-page/my-dspace-page.component';
+
+describe('PageSizeSelectorComponent', () => {
+
+  let comp: PageSizeSelectorComponent;
+  let fixture: ComponentFixture<PageSizeSelectorComponent>;
+
+  const pagination: PaginationComponentOptions = new PaginationComponentOptions();
+  pagination.id = 'search-results-pagination';
+  pagination.currentPage = 1;
+  pagination.pageSize = 10;
+  const sort: SortOptions = new SortOptions('score', SortDirection.DESC);
+
+  const queryParam = 'test query';
+  const scopeParam = '7669c72a-3f2a-451f-a3b9-9210e7a4c02f';
+  const paginatedSearchOptions = {
+    query: queryParam,
+    scope: scopeParam,
+    pagination,
+    sort
+  };
+
+  const activatedRouteStub = {
+    queryParams: observableOf({
+      query: queryParam,
+      scope: scopeParam
+    })
+  };
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [TranslateModule.forRoot(), RouterTestingModule.withRoutes([])],
+      declarations: [PageSizeSelectorComponent, EnumKeysPipe, VarDirective],
+      providers: [
+        { provide: ActivatedRoute, useValue: activatedRouteStub },
+        {
+          provide: SEARCH_CONFIG_SERVICE,
+          useValue: {
+            paginatedSearchOptions: observableOf(paginatedSearchOptions),
+          }
+        },
+      ],
+      schemas: [NO_ERRORS_SCHEMA]
+    }).compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(PageSizeSelectorComponent);
+    comp = fixture.componentInstance;
+
+    // SearchPageComponent test instance
+    fixture.detectChanges();
+
+  });
+
+  it('it should show the size settings with the respective selectable options', (done) => {
+    (comp as any).paginationOptions$.pipe(first()).subscribe((options) => {
+        const pageSizeSetting = fixture.debugElement.query(By.css('div.page-size-settings'));
+        expect(pageSizeSetting).toBeDefined();
+        const childElements = pageSizeSetting.query(By.css('.form-control')).children;
+        expect(childElements.length).toEqual(options.pageSizeOptions.length);
+        done()
+      }
+    )
+  });
+
+  it('should have the proper rpp value selected by default', (done) => {
+    (comp as any).paginationOptions$.pipe(take(1)).subscribe((options) => {
+      const pageSizeSetting = fixture.debugElement.query(By.css('div.page-size-settings'));
+      const childElementToBeSelected = pageSizeSetting.query(By.css('.form-control option[value="10"][selected="selected"]'));
+      expect(childElementToBeSelected).toBeDefined();
+      done();
+    });
+  });
+
+});