115046: Fixed failing tests & added new test to cover added code

(cherry picked from commit 479adf6519)

src/app/core/data/relationship-data.service.ts

@@ -237,7 +237,7 @@ export class RelationshipDataService extends IdentifiableDataService<Relationshi
    * Method to remove an item that's part of a relationship from the cache
    * @param item The item to remove from the cache
    */
-  public refreshRelationshipItemsInCache(item) {
+  public refreshRelationshipItemsInCache(item: Item): void {
     this.objectCache.remove(item._links.self.href);
     this.requestService.removeByHrefSubstring(item.uuid);
     observableCombineLatest([

src/app/item-page/edit-item-page/item-relationships/edit-item-relationships.service.spec.ts

@@ -1,16 +1,303 @@
 import { TestBed } from '@angular/core/testing';
+import { TranslateModule } from '@ngx-translate/core';
+import { of as observableOf } from 'rxjs';
+import { v4 as uuidv4 } from 'uuid';
 
+import { EntityTypeDataService } from '../../../core/data/entity-type-data.service';
+import { ItemDataService } from '../../../core/data/item-data.service';
+import { FieldChangeType } from '../../../core/data/object-updates/field-change-type.model';
+import { FieldUpdate } from '../../../core/data/object-updates/field-update.model';
+import { FieldUpdates } from '../../../core/data/object-updates/field-updates.model';
+import {
+  DeleteRelationship,
+  RelationshipIdentifiable,
+} from '../../../core/data/object-updates/object-updates.reducer';
+import { ObjectUpdatesService } from '../../../core/data/object-updates/object-updates.service';
+import { RelationshipDataService } from '../../../core/data/relationship-data.service';
+import { Item } from '../../../core/shared/item.model';
+import { ItemType } from '../../../core/shared/item-relationships/item-type.model';
+import { Relationship } from '../../../core/shared/item-relationships/relationship.model';
+import { RelationshipType } from '../../../core/shared/item-relationships/relationship-type.model';
+import { NotificationsService } from '../../../shared/notifications/notifications.service';
+import {
+  createFailedRemoteDataObject,
+  createSuccessfulRemoteDataObject,
+  createSuccessfulRemoteDataObject$,
+} from '../../../shared/remote-data.utils';
+import { EntityTypeDataServiceStub } from '../../../shared/testing/entity-type-data.service.stub';
+import { ItemDataServiceStub } from '../../../shared/testing/item-data.service.stub';
+import { NotificationsServiceStub } from '../../../shared/testing/notifications-service.stub';
+import { ObjectUpdatesServiceStub } from '../../../shared/testing/object-updates.service.stub';
+import { RelationshipDataServiceStub } from '../../../shared/testing/relationship-data.service.stub';
 import { EditItemRelationshipsService } from './edit-item-relationships.service';
 
 describe('EditItemRelationshipsService', () => {
   let service: EditItemRelationshipsService;
 
+  let itemService: ItemDataServiceStub;
+  let objectUpdatesService: ObjectUpdatesServiceStub;
+  let notificationsService: NotificationsServiceStub;
+  let relationshipService: RelationshipDataServiceStub;
+  let entityTypeDataService: EntityTypeDataServiceStub;
+
+  let currentItem: Item;
+
+  let relationshipItem1: Item;
+  let relationshipIdentifiable1: RelationshipIdentifiable;
+  let relationship1: Relationship;
+
+  let relationshipItem2: Item;
+  let relationshipIdentifiable2: RelationshipIdentifiable;
+  let relationship2: Relationship;
+
+  let orgUnitType: ItemType;
+  let orgUnitToOrgUnitType: RelationshipType;
+
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    itemService = new ItemDataServiceStub();
+    objectUpdatesService = new ObjectUpdatesServiceStub();
+    notificationsService = new NotificationsServiceStub();
+    relationshipService = new RelationshipDataServiceStub();
+    entityTypeDataService = new EntityTypeDataServiceStub();
+
+    TestBed.configureTestingModule({
+      imports: [
+        TranslateModule.forRoot(),
+      ],
+      providers: [
+        { provide: ItemDataService, useValue: itemService },
+        { provide: ObjectUpdatesService, useValue: objectUpdatesService },
+        { provide: NotificationsService, useValue: notificationsService },
+        { provide: RelationshipDataService, useValue: relationshipService },
+        { provide: EntityTypeDataService, useValue: entityTypeDataService },
+      ],
+    });
     service = TestBed.inject(EditItemRelationshipsService);
   });
 
-  it('should be created', () => {
-    expect(service).toBeTruthy();
+  beforeEach(() => {
+    currentItem = Object.assign(new Item(), {
+      uuid: uuidv4(),
+      metadata: {
+        'dspace.entity.type': 'OrgUnit',
+      },
+      _links: {
+        self: {
+          href: 'selfLink1',
+        },
+      },
+    });
+
+    relationshipItem1 = Object.assign(new Item(), {
+      uuid: uuidv4(),
+      metadata: {
+        'dspace.entity.type': 'OrgUnit',
+      },
+      _links: {
+        self: {
+          href: 'selfLink2',
+        },
+      },
+    });
+    relationshipIdentifiable1 = {
+      originalItem: currentItem,
+      relatedItem: relationshipItem1,
+      type: orgUnitToOrgUnitType,
+      uuid: `1-${relationshipItem1.uuid}`,
+    } as RelationshipIdentifiable;
+    relationship1 = Object.assign(new Relationship(), {
+      _links: {
+        leftItem: currentItem._links.self,
+        rightItem: relationshipItem1._links.self,
+      },
+    });
+
+    relationshipItem2 = Object.assign(new Item(), {
+      uuid: uuidv4(),
+      metadata: {
+        'dspace.entity.type': 'OrgUnit',
+      },
+      _links: {
+        self: {
+          href: 'selfLink3',
+        },
+      },
+    });
+    relationshipIdentifiable2 = {
+      originalItem: currentItem,
+      relatedItem: relationshipItem2,
+      type: orgUnitToOrgUnitType,
+      uuid: `1-${relationshipItem2.uuid}`,
+    } as RelationshipIdentifiable;
+    relationship2 = Object.assign(new Relationship(), {
+      _links: {
+        leftItem: currentItem._links.self,
+        rightItem: relationshipItem2._links.self,
+      },
+    });
+
+    orgUnitType = Object.assign(new ItemType(), {
+      id: '2',
+      label: 'OrgUnit',
+    });
+    orgUnitToOrgUnitType = Object.assign(new RelationshipType(), {
+      id: '1',
+      leftMaxCardinality: null,
+      leftMinCardinality: 0,
+      leftType: createSuccessfulRemoteDataObject$(orgUnitType),
+      leftwardType: 'isOrgUnitOfOrgUnit',
+      rightMaxCardinality: null,
+      rightMinCardinality: 0,
+      rightType: createSuccessfulRemoteDataObject$(orgUnitType),
+      rightwardType: 'isOrgUnitOfOrgUnit',
+      uuid: 'relationshiptype-1',
+    });
+  });
+
+  describe('submit', () => {
+    let fieldUpdateAddRelationship1: FieldUpdate;
+    let fieldUpdateRemoveRelationship2: FieldUpdate;
+
+    beforeEach(() => {
+      fieldUpdateAddRelationship1 = {
+        changeType: FieldChangeType.ADD,
+        field: relationshipIdentifiable1,
+      };
+      fieldUpdateRemoveRelationship2 = {
+        changeType: FieldChangeType.REMOVE,
+        field: relationshipIdentifiable2,
+      };
+
+      spyOn(service, 'addRelationship').withArgs(relationshipIdentifiable1).and.returnValue(createSuccessfulRemoteDataObject$(relationship1));
+      spyOn(service, 'deleteRelationship').withArgs(relationshipIdentifiable2 as DeleteRelationship).and.returnValue(createSuccessfulRemoteDataObject$({}));
+      spyOn(itemService, 'invalidateByHref').and.callThrough();
+    });
+
+    it('should support performing multiple relationships manipulations in one submit() call', () => {
+      spyOn(objectUpdatesService, 'getFieldUpdates').and.returnValue(observableOf({
+        [`1-${relationshipItem1.uuid}`]: fieldUpdateAddRelationship1,
+        [`1-${relationshipItem2.uuid}`]: fieldUpdateRemoveRelationship2,
+      } as FieldUpdates));
+      service.submit(currentItem, `/entities/orgunit/${currentItem.uuid}/edit/relationships`);
+
+      expect(service.addRelationship).toHaveBeenCalledWith(relationshipIdentifiable1);
+      expect(service.deleteRelationship).toHaveBeenCalledWith(relationshipIdentifiable2 as DeleteRelationship);
+
+      expect(itemService.invalidateByHref).toHaveBeenCalledWith(currentItem.self);
+      expect(itemService.invalidateByHref).toHaveBeenCalledWith(relationshipItem1.self);
+      // TODO currently this isn't done yet
+      // expect(itemService.invalidateByHref).toHaveBeenCalledWith(relationshipItem2.self);
+
+      expect(notificationsService.success).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  describe('deleteRelationship', () => {
+    beforeEach(() => {
+      spyOn(relationshipService, 'deleteRelationship').and.callThrough();
+    });
+
+    it('should pass "all" as copyVirtualMetadata when the user want to keep the data on both sides', () => {
+      service.deleteRelationship({
+        uuid: relationshipItem1.uuid,
+        keepLeftVirtualMetadata: true,
+        keepRightVirtualMetadata: true,
+      } as DeleteRelationship);
+
+      expect(relationshipService.deleteRelationship).toHaveBeenCalledWith(relationshipItem1.uuid, 'all', false);
+    });
+
+    it('should pass "left" as copyVirtualMetadata when the user only want to keep the data on the left side', () => {
+      service.deleteRelationship({
+        uuid: relationshipItem1.uuid,
+        keepLeftVirtualMetadata: true,
+        keepRightVirtualMetadata: false,
+      } as DeleteRelationship);
+
+      expect(relationshipService.deleteRelationship).toHaveBeenCalledWith(relationshipItem1.uuid, 'left', false);
+    });
+
+    it('should pass "right" as copyVirtualMetadata when the user only want to keep the data on the right side', () => {
+      service.deleteRelationship({
+        uuid: relationshipItem1.uuid,
+        keepLeftVirtualMetadata: false,
+        keepRightVirtualMetadata: true,
+      } as DeleteRelationship);
+
+      expect(relationshipService.deleteRelationship).toHaveBeenCalledWith(relationshipItem1.uuid, 'right', false);
+    });
+
+    it('should pass "none" as copyVirtualMetadata when the user doesn\'t want to keep the virtual metadata', () => {
+      service.deleteRelationship({
+        uuid: relationshipItem1.uuid,
+        keepLeftVirtualMetadata: false,
+        keepRightVirtualMetadata: false,
+      } as DeleteRelationship);
+
+      expect(relationshipService.deleteRelationship).toHaveBeenCalledWith(relationshipItem1.uuid, 'none', false);
+    });
+  });
+
+  describe('addRelationship', () => {
+    beforeEach(() => {
+      spyOn(relationshipService, 'addRelationship').and.callThrough();
+    });
+
+    it('should call the addRelationship from relationshipService correctly when original item is on the right', () => {
+      service.addRelationship({
+        originalItem: currentItem,
+        originalIsLeft: false,
+        relatedItem: relationshipItem1,
+        type: orgUnitToOrgUnitType,
+        uuid: `1-${relationshipItem1.uuid}`,
+      } as RelationshipIdentifiable);
+      expect(relationshipService.addRelationship).toHaveBeenCalledWith(orgUnitToOrgUnitType.id, relationshipItem1, currentItem, undefined, null, false);
+    });
+
+    it('should call the addRelationship from relationshipService correctly when original item is on the left', () => {
+      service.addRelationship({
+        originalItem: currentItem,
+        originalIsLeft: true,
+        relatedItem: relationshipItem1,
+        type: orgUnitToOrgUnitType,
+        uuid: `1-${relationshipItem1.uuid}`,
+      } as RelationshipIdentifiable);
+
+      expect(relationshipService.addRelationship).toHaveBeenCalledWith(orgUnitToOrgUnitType.id, currentItem, relationshipItem1, null, undefined, false);
+    });
+  });
+
+  describe('displayNotifications', () => {
+    it('should show one success notification when multiple requests succeeded', () => {
+      service.displayNotifications([
+        createSuccessfulRemoteDataObject({}),
+        createSuccessfulRemoteDataObject({}),
+      ]);
+
+      expect(notificationsService.success).toHaveBeenCalledTimes(1);
+    });
+
+    it('should show one success notification even when some requests failed', () => {
+      service.displayNotifications([
+        createSuccessfulRemoteDataObject({}),
+        createFailedRemoteDataObject('Request Failed'),
+        createSuccessfulRemoteDataObject({}),
+      ]);
+
+      expect(notificationsService.success).toHaveBeenCalledTimes(1);
+      expect(notificationsService.error).toHaveBeenCalledTimes(1);
+    });
+
+    it('should show a separate error notification for each failed request', () => {
+      service.displayNotifications([
+        createSuccessfulRemoteDataObject({}),
+        createFailedRemoteDataObject('Request Failed 1'),
+        createSuccessfulRemoteDataObject({}),
+        createFailedRemoteDataObject('Request Failed 2'),
+      ]);
+
+      expect(notificationsService.success).toHaveBeenCalledTimes(1);
+      expect(notificationsService.error).toHaveBeenCalledTimes(2);
+    });
   });
 });

src/app/item-page/edit-item-page/item-relationships/edit-item-relationships.service.ts

@@ -5,6 +5,7 @@ import {
   BehaviorSubject,
   EMPTY,
   Observable,
+  Subscription,
 } from 'rxjs';
 import {
   concatMap,
@@ -120,7 +121,7 @@ export class EditItemRelationshipsService {
   /**
    * Sends all initial values of this item to the object updates service
    */
-  public initializeOriginalFields(item: Item, url: string) {
+  public initializeOriginalFields(item: Item, url: string): Subscription {
     return this.relationshipService.getRelatedItems(item).pipe(
       take(1),
     ).subscribe((items: Item[]) => {
@@ -168,7 +169,7 @@ export class EditItemRelationshipsService {
    * - Success notification in case there's at least one successful response
    * @param responses
    */
-  displayNotifications(responses: RemoteData<NoContent>[]) {
+  displayNotifications(responses: RemoteData<NoContent>[]): void {
     const failedResponses = responses.filter((response: RemoteData<NoContent>) => response.hasFailed);
     const successfulResponses = responses.filter((response: RemoteData<NoContent>) => response.hasSucceeded);
 
@@ -186,7 +187,7 @@ export class EditItemRelationshipsService {
    * Get translated notification title
    * @param key
    */
-  getNotificationTitle(key: string) {
+  getNotificationTitle(key: string): string {
     return this.translateService.instant(this.notificationsPrefix + key + '.title');
   }
 
@@ -194,7 +195,7 @@ export class EditItemRelationshipsService {
    * Get translated notification content
    * @param key
    */
-  getNotificationContent(key: string) {
+  getNotificationContent(key: string): string {
     return this.translateService.instant(this.notificationsPrefix + key + '.content');
 
   }

src/app/item-page/edit-item-page/item-relationships/edit-relationship-list/edit-relationship-list.component.spec.ts

@@ -10,19 +10,17 @@ import {
 import { By } from '@angular/platform-browser';
 import {
   ActivatedRoute,
-  Router,
+  RouterModule,
 } from '@angular/router';
 import { provideMockStore } from '@ngrx/store/testing';
 import { TranslateModule } from '@ngx-translate/core';
+import { cold } from 'jasmine-marbles';
 import { of as observableOf } from 'rxjs';
-import { AuthRequestService } from 'src/app/core/auth/auth-request.service';
-import { CookieService } from 'src/app/core/services/cookie.service';
-import { HardRedirectService } from 'src/app/core/services/hard-redirect.service';
-import { ActivatedRouteStub } from 'src/app/shared/testing/active-router.stub';
-import { AuthRequestServiceStub } from 'src/app/shared/testing/auth-request-service.stub';
 
 import { APP_CONFIG } from '../../../../../config/app-config.interface';
+import { environment } from '../../../../../environments/environment.test';
 import { REQUEST } from '../../../../../express.tokens';
+import { AuthRequestService } from '../../../../core/auth/auth-request.service';
 import { LinkService } from '../../../../core/cache/builders/link.service';
 import { ConfigurationDataService } from '../../../../core/data/configuration-data.service';
 import { FieldChangeType } from '../../../../core/data/object-updates/field-change-type.model';
@@ -31,6 +29,8 @@ import { RelationshipDataService } from '../../../../core/data/relationship-data
 import { RelationshipTypeDataService } from '../../../../core/data/relationship-type-data.service';
 import { GroupDataService } from '../../../../core/eperson/group-data.service';
 import { PaginationService } from '../../../../core/pagination/pagination.service';
+import { CookieService } from '../../../../core/services/cookie.service';
+import { HardRedirectService } from '../../../../core/services/hard-redirect.service';
 import { LinkHeadService } from '../../../../core/services/link-head.service';
 import { ConfigurationProperty } from '../../../../core/shared/configuration-property.model';
 import { Item } from '../../../../core/shared/item.model';
@@ -40,51 +40,55 @@ import { RelationshipType } from '../../../../core/shared/item-relationships/rel
 import { SearchConfigurationService } from '../../../../core/shared/search/search-configuration.service';
 import { XSRFService } from '../../../../core/xsrf/xsrf.service';
 import { HostWindowService } from '../../../../shared/host-window.service';
-import { RouterMock } from '../../../../shared/mocks/router.mock';
 import { SelectableListService } from '../../../../shared/object-list/selectable-list/selectable-list.service';
 import { PaginationComponent } from '../../../../shared/pagination/pagination.component';
 import { PaginationComponentOptions } from '../../../../shared/pagination/pagination-component-options.model';
 import { createSuccessfulRemoteDataObject$ } from '../../../../shared/remote-data.utils';
+import { ActivatedRouteStub } from '../../../../shared/testing/active-router.stub';
+import { AuthRequestServiceStub } from '../../../../shared/testing/auth-request-service.stub';
+import { EditItemRelationshipsServiceStub } from '../../../../shared/testing/edit-item-relationships.service.stub';
 import { HostWindowServiceStub } from '../../../../shared/testing/host-window-service.stub';
 import { PaginationServiceStub } from '../../../../shared/testing/pagination-service.stub';
 import { SearchConfigurationServiceStub } from '../../../../shared/testing/search-configuration-service.stub';
 import { createPaginatedList } from '../../../../shared/testing/utils.test';
+import { EditItemRelationshipsService } from '../edit-item-relationships.service';
 import { EditRelationshipListComponent } from './edit-relationship-list.component';
 
-let comp: EditRelationshipListComponent;
-let fixture: ComponentFixture<EditRelationshipListComponent>;
-let de: DebugElement;
-
-let linkService;
-let objectUpdatesService;
-let relationshipService;
-let selectableListService;
-let paginationService;
-let hostWindowService;
-let hardRedirectService;
-const relationshipTypeService = {};
-
-const url = 'http://test-url.com/test-url';
-
-let item;
-let entityType;
-let relatedEntityType;
-let author1;
-let author2;
-let fieldUpdate1;
-let fieldUpdate2;
-let relationships;
-let relationshipType;
-let paginationOptions;
-
 describe('EditRelationshipListComponent', () => {
 
+  let comp: EditRelationshipListComponent;
+  let fixture: ComponentFixture<EditRelationshipListComponent>;
+  let de: DebugElement;
+
+  let linkService;
+  let objectUpdatesService;
+  let relationshipService;
+  let selectableListService;
+  let paginationService: PaginationServiceStub;
+  let hostWindowService: HostWindowServiceStub;
+  let hardRedirectService;
+  const relationshipTypeService = {};
+  let editItemRelationshipsService: EditItemRelationshipsServiceStub;
+
+  const url = 'http://test-url.com/test-url';
+
+  let itemLeft: Item;
+  let entityTypeLeft: ItemType;
+  let entityTypeRight: ItemType;
+  let itemRight1: Item;
+  let itemRight2: Item;
+  let fieldUpdate1;
+  let fieldUpdate2;
+  let relationships: Relationship[];
+  let relationshipType: RelationshipType;
+  let paginationOptions: PaginationComponentOptions;
+
   const resetComponent = () => {
     fixture = TestBed.createComponent(EditRelationshipListComponent);
     comp = fixture.componentInstance;
     de = fixture.debugElement;
-    comp.item = item;
-    comp.itemType = entityType;
+    comp.item = itemLeft;
+    comp.itemType = entityTypeLeft;
     comp.url = url;
     comp.relationshipType = relationshipType;
     comp.hasChanges = observableOf(false);
@@ -101,29 +105,26 @@ describe('EditRelationshipListComponent', () => {
     },
   };
 
-  hardRedirectService = jasmine.createSpyObj('hardRedirectService', ['redirect']);
-
-  beforeEach(waitForAsync(() => {
-
-    entityType = Object.assign(new ItemType(), {
-      id: 'Publication',
-      uuid: 'Publication',
-      label: 'Publication',
+  function init(leftType: string, rightType: string): void {
+    entityTypeLeft = Object.assign(new ItemType(), {
+      id: leftType,
+      uuid: leftType,
+      label: leftType,
     });
 
-    relatedEntityType = Object.assign(new ItemType(), {
-      id: 'Author',
-      uuid: 'Author',
-      label: 'Author',
+    entityTypeRight = Object.assign(new ItemType(), {
+      id: rightType,
+      uuid: rightType,
+      label: rightType,
     });
 
     relationshipType = Object.assign(new RelationshipType(), {
       id: '1',
       uuid: '1',
-      leftType: createSuccessfulRemoteDataObject$(entityType),
-      rightType: createSuccessfulRemoteDataObject$(relatedEntityType),
-      leftwardType: 'isAuthorOfPublication',
-      rightwardType: 'isPublicationOfAuthor',
+      leftType: createSuccessfulRemoteDataObject$(entityTypeLeft),
+      rightType: createSuccessfulRemoteDataObject$(entityTypeRight),
+      leftwardType: `is${rightType}Of${leftType}`,
+      rightwardType: `is${leftType}Of${rightType}`,
     });
 
     paginationOptions = Object.assign(new PaginationComponentOptions(), {
@@ -132,13 +133,13 @@ describe('EditRelationshipListComponent', () => {
       currentPage: 1,
     });
 
-    author1 = Object.assign(new Item(), {
-      id: 'author1',
-      uuid: 'author1',
+    itemRight1 = Object.assign(new Item(), {
+      id: `${rightType}-1`,
+      uuid: `${rightType}-1`,
     });
-    author2 = Object.assign(new Item(), {
-      id: 'author2',
-      uuid: 'author2',
+    itemRight2 = Object.assign(new Item(), {
+      id: `${rightType}-2`,
+      uuid: `${rightType}-2`,
     });
 
     relationships = [
@@ -147,25 +148,25 @@ describe('EditRelationshipListComponent', () => {
         id: '2',
         uuid: '2',
         relationshipType: createSuccessfulRemoteDataObject$(relationshipType),
-        leftItem: createSuccessfulRemoteDataObject$(item),
-        rightItem: createSuccessfulRemoteDataObject$(author1),
+        leftItem: createSuccessfulRemoteDataObject$(itemLeft),
+        rightItem: createSuccessfulRemoteDataObject$(itemRight1),
       }),
       Object.assign(new Relationship(), {
         self: url + '/3',
         id: '3',
         uuid: '3',
         relationshipType: createSuccessfulRemoteDataObject$(relationshipType),
-        leftItem: createSuccessfulRemoteDataObject$(item),
-        rightItem: createSuccessfulRemoteDataObject$(author2),
+        leftItem: createSuccessfulRemoteDataObject$(itemLeft),
+        rightItem: createSuccessfulRemoteDataObject$(itemRight2),
       }),
     ];
 
-    item = Object.assign(new Item(), {
+    itemLeft = Object.assign(new Item(), {
       _links: {
         self: { href: 'fake-item-url/publication' },
       },
-      id: 'publication',
-      uuid: 'publication',
+      id: `1-${leftType}`,
+      uuid: `1-${leftType}`,
       relationships: createSuccessfulRemoteDataObject$(createPaginatedList(relationships)),
     });
 
@@ -197,7 +198,7 @@ describe('EditRelationshipListComponent', () => {
 
     relationshipService = jasmine.createSpyObj('relationshipService',
       {
-        getRelatedItemsByLabel: createSuccessfulRemoteDataObject$(createPaginatedList([author1, author2])),
+        getRelatedItemsByLabel: createSuccessfulRemoteDataObject$(createPaginatedList([itemRight1, itemRight2])),
         getItemRelationshipsByLabel: createSuccessfulRemoteDataObject$(createPaginatedList(relationships)),
         isLeftItem: observableOf(true),
       },
@@ -233,14 +234,14 @@ describe('EditRelationshipListComponent', () => {
       })),
     });
 
-    const environmentUseThumbs = {
-      browseBy: {
-        showThumbnails: true,
-      },
-    };
+    editItemRelationshipsService = new EditItemRelationshipsServiceStub();
 
     TestBed.configureTestingModule({
-      imports: [TranslateModule.forRoot(), EditRelationshipListComponent],
+      imports: [
+        EditRelationshipListComponent,
+        RouterModule.forRoot([]),
+        TranslateModule.forRoot(),
+      ],
       providers: [
         provideMockStore({ initialState }),
         { provide: ObjectUpdatesService, useValue: objectUpdatesService },
@@ -251,15 +252,15 @@ describe('EditRelationshipListComponent', () => {
         { provide: HostWindowService, useValue: hostWindowService },
         { provide: RelationshipTypeDataService, useValue: relationshipTypeService },
         { provide: GroupDataService, useValue: groupDataService },
-        { provide: Router, useValue: new RouterMock() },
         { provide: LinkHeadService, useValue: linkHeadService },
         { provide: ConfigurationDataService, useValue: configurationDataService },
         { provide: SearchConfigurationService, useValue: new SearchConfigurationServiceStub() },
+        { provide: EditItemRelationshipsService, useValue: editItemRelationshipsService },
         { provide: ActivatedRoute, useValue: new ActivatedRouteStub() },
         { provide: AuthRequestService, useValue: new AuthRequestServiceStub() },
         { provide: HardRedirectService, useValue: hardRedirectService },
         { provide: XSRFService, useValue: {} },
-        { provide: APP_CONFIG, useValue: environmentUseThumbs },
+        { provide: APP_CONFIG, useValue: environment },
         { provide: REQUEST, useValue: {} },
         CookieService,
       ], schemas: [
@@ -268,7 +269,10 @@ describe('EditRelationshipListComponent', () => {
     }).compileComponents();
 
     resetComponent();
-  }));
+  }
+
+  describe('Publication - Author relationship', () => {
+    beforeEach(waitForAsync(() => init('Publication', 'Author')));
 
     describe('changeType is REMOVE', () => {
       beforeEach(() => {
@@ -316,8 +320,8 @@ describe('EditRelationshipListComponent', () => {
           relationshipType = Object.assign(new RelationshipType(), {
             id: '1',
             uuid: '1',
-          leftType: createSuccessfulRemoteDataObject$(entityType), // publication
-          rightType: createSuccessfulRemoteDataObject$(relatedEntityType), // author
+            leftType: createSuccessfulRemoteDataObject$(entityTypeLeft), // publication
+            rightType: createSuccessfulRemoteDataObject$(entityTypeRight), // author
             leftwardType: 'isAuthorOfPublication',
             rightwardType: 'isPublicationOfAuthor',
           });
@@ -340,8 +344,8 @@ describe('EditRelationshipListComponent', () => {
           relationshipType = Object.assign(new RelationshipType(), {
             id: '1',
             uuid: '1',
-          leftType: createSuccessfulRemoteDataObject$(relatedEntityType), // author
-          rightType: createSuccessfulRemoteDataObject$(entityType), // publication
+            leftType: createSuccessfulRemoteDataObject$(entityTypeRight), // author
+            rightType: createSuccessfulRemoteDataObject$(entityTypeLeft), // publication
             leftwardType: 'isPublicationOfAuthor',
             rightwardType: 'isAuthorOfPublication',
           });
@@ -377,5 +381,15 @@ describe('EditRelationshipListComponent', () => {
       });
 
     });
+  });
 
+  describe('OrgUnit - OrgUnit relationship', () => {
+    beforeEach(waitForAsync(() => init('OrgUnit', 'OrgUnit')));
+
+    it('should emit the relatedEntityType$ even for same entity relationships', () => {
+      expect(comp.relatedEntityType$).toBeObservable(cold('(a|)', {
+        a: entityTypeRight,
+      }));
+    });
+  });
 });

src/app/item-page/edit-item-page/item-relationships/edit-relationship-list/edit-relationship-list.component.ts

@@ -50,7 +50,6 @@ import { RelationshipIdentifiable } from '../../../../core/data/object-updates/o
 import { ObjectUpdatesService } from '../../../../core/data/object-updates/object-updates.service';
 import { PaginatedList } from '../../../../core/data/paginated-list.model';
 import { RelationshipDataService } from '../../../../core/data/relationship-data.service';
-import { RelationshipTypeDataService } from '../../../../core/data/relationship-type-data.service';
 import { RemoteData } from '../../../../core/data/remote-data';
 import { PaginationService } from '../../../../core/pagination/pagination.service';
 import { Collection } from '../../../../core/shared/collection.model';
@@ -146,7 +145,7 @@ export class EditRelationshipListComponent implements OnInit, OnDestroy {
    */
   private currentItemIsLeftItem$: BehaviorSubject<boolean> = new BehaviorSubject(undefined);
 
-  private relatedEntityType$: Observable<ItemType>;
+  relatedEntityType$: Observable<ItemType>;
 
   /**
    * The translation key for the entity type
@@ -208,7 +207,6 @@ export class EditRelationshipListComponent implements OnInit, OnDestroy {
     protected objectUpdatesService: ObjectUpdatesService,
     protected linkService: LinkService,
     protected relationshipService: RelationshipDataService,
-    protected relationshipTypeService: RelationshipTypeDataService,
     protected modalService: NgbModal,
     protected paginationService: PaginationService,
     protected selectableListService: SelectableListService,

src/app/item-page/edit-item-page/item-relationships/item-relationships.component.spec.ts

@@ -44,6 +44,7 @@ import {
   createSuccessfulRemoteDataObject,
   createSuccessfulRemoteDataObject$,
 } from '../../../shared/remote-data.utils';
+import { ItemDataServiceStub } from '../../../shared/testing/item-data.service.stub';
 import { relationshipTypes } from '../../../shared/testing/relationship-types.mock';
 import { RouterStub } from '../../../shared/testing/router.stub';
 import { createPaginatedList } from '../../../shared/testing/utils.test';
@@ -72,7 +73,7 @@ const notificationsService = jasmine.createSpyObj('notificationsService',
 const router = new RouterStub();
 let relationshipTypeService;
 let routeStub;
-let itemService;
+let itemService: ItemDataServiceStub;
 
 const url = 'http://test-url.com/test-url';
 router.url = url;
@@ -157,10 +158,7 @@ describe('ItemRelationshipsComponent', () => {
       changeType: FieldChangeType.REMOVE,
     };
 
-    itemService = jasmine.createSpyObj('itemService', {
-      findByHref: createSuccessfulRemoteDataObject$(item),
-      findById: createSuccessfulRemoteDataObject$(item),
-    });
+    itemService = new ItemDataServiceStub();
     routeStub = {
       data: observableOf({}),
       parent: {
@@ -251,6 +249,8 @@ describe('ItemRelationshipsComponent', () => {
   }));
 
   beforeEach(() => {
+    spyOn(itemService, 'findByHref').and.returnValue(item);
+    spyOn(itemService, 'findById').and.returnValue(item);
     fixture = TestBed.createComponent(ItemRelationshipsComponent);
     comp = fixture.componentInstance;
     de = fixture.debugElement;

src/app/shared/testing/base-data-service.stub.ts

@@ -4,12 +4,19 @@ import {
 } from 'rxjs';
 
 import { CacheableObject } from '../../core/cache/cacheable-object.model';
+import { RemoteData } from '../../core/data/remote-data';
+import { createSuccessfulRemoteDataObject$ } from '../remote-data.utils';
+import { FollowLinkConfig } from '../utils/follow-link-config.model';
 
 /**
  * Stub class for {@link BaseDataService}
  */
 export abstract class BaseDataServiceStub<T extends CacheableObject> {
 
+  findByHref(_href$: string | Observable<string>, _useCachedVersionIfAvailable = true, _reRequestOnStale = true, ..._linksToFollow: FollowLinkConfig<T>[]): Observable<RemoteData<T>> {
+    return createSuccessfulRemoteDataObject$(undefined);
+  }
+
   invalidateByHref(_href: string): Observable<boolean> {
     return observableOf(true);
   }

src/app/shared/testing/edit-item-relationships.service.stub.ts

@@ -0,0 +1,48 @@
+/* eslint-disable no-empty, @typescript-eslint/no-empty-function */
+import {
+  Observable,
+  Subscription,
+} from 'rxjs';
+
+import {
+  DeleteRelationship,
+  RelationshipIdentifiable,
+} from '../../core/data/object-updates/object-updates.reducer';
+import { RemoteData } from '../../core/data/remote-data';
+import { Item } from '../../core/shared/item.model';
+import { Relationship } from '../../core/shared/item-relationships/relationship.model';
+import { NoContent } from '../../core/shared/NoContent.model';
+import { createSuccessfulRemoteDataObject$ } from '../remote-data.utils';
+
+/**
+ * Stub class of {@link EditItemRelationshipsService}
+ */
+export class EditItemRelationshipsServiceStub {
+
+  submit(_item: Item, _url: string): void {
+  }
+
+  initializeOriginalFields(_item: Item, _url: string): Subscription {
+    return new Subscription();
+  }
+
+  deleteRelationship(_deleteRelationship: DeleteRelationship): Observable<RemoteData<NoContent>> {
+    return createSuccessfulRemoteDataObject$({});
+  }
+
+  addRelationship(_addRelationship: RelationshipIdentifiable): Observable<RemoteData<Relationship>> {
+    return createSuccessfulRemoteDataObject$(undefined);
+  }
+
+  displayNotifications(_responses: RemoteData<NoContent>[]): void {
+  }
+
+  getNotificationTitle(_key: string): string {
+    return '';
+  }
+
+  getNotificationContent(_key: string): string {
+    return '';
+  }
+
+}

src/app/shared/testing/entity-type-data.service.stub.ts

@@ -0,0 +1,5 @@
+/**
+ * Stub class of {@link EntityTypeDataService}
+ */
+export class EntityTypeDataServiceStub {
+}

src/app/shared/testing/item-data.service.stub.ts

@@ -0,0 +1,8 @@
+import { Item } from '../../core/shared/item.model';
+import { IdentifiableDataServiceStub } from './identifiable-data-service.stub';
+
+/**
+ * Stub class of {@link ItemDataService}
+ */
+export class ItemDataServiceStub extends IdentifiableDataServiceStub<Item> {
+}

src/app/shared/testing/object-updates.service.stub.ts

@@ -0,0 +1,24 @@
+/* eslint-disable no-empty, @typescript-eslint/no-empty-function */
+import {
+  Observable,
+  of as observableOf,
+} from 'rxjs';
+
+import { FieldUpdates } from '../../core/data/object-updates/field-updates.model';
+import { Identifiable } from '../../core/data/object-updates/identifiable.model';
+import { PatchOperationService } from '../../core/data/object-updates/patch-operation-service/patch-operation.service';
+import { GenericConstructor } from '../../core/shared/generic-constructor';
+
+/**
+ * Stub class of {@link ObjectUpdatesService}
+ */
+export class ObjectUpdatesServiceStub {
+
+  initialize(_url: string, _fields: Identifiable[], _lastModified: Date, _patchOperationService?: GenericConstructor<PatchOperationService>): void {
+  }
+
+  getFieldUpdates(_url: string, _initialFields: Identifiable[], _ignoreStates?: boolean): Observable<FieldUpdates> {
+    return observableOf({});
+  }
+
+}

src/app/shared/testing/relationship-data.service.stub.ts

@@ -0,0 +1,86 @@
+/* eslint-disable no-empty, @typescript-eslint/no-empty-function */
+import {
+  Observable,
+  of as observableOf,
+} from 'rxjs';
+
+import { FindListOptions } from '../../core/data/find-list-options.model';
+import { PaginatedList } from '../../core/data/paginated-list.model';
+import { RemoteData } from '../../core/data/remote-data';
+import { DSpaceObject } from '../../core/shared/dspace-object.model';
+import { Item } from '../../core/shared/item.model';
+import { Relationship } from '../../core/shared/item-relationships/relationship.model';
+import { MetadataValue } from '../../core/shared/metadata.models';
+import { MetadataRepresentation } from '../../core/shared/metadata-representation/metadata-representation.model';
+import { NoContent } from '../../core/shared/NoContent.model';
+import { createSuccessfulRemoteDataObject$ } from '../remote-data.utils';
+import { FollowLinkConfig } from '../utils/follow-link-config.model';
+
+/**
+ * Stub class of {@link RelationshipDataService}
+ */
+export class RelationshipDataServiceStub {
+
+  deleteRelationship(_id: string, _copyVirtualMetadata: string, _shouldRefresh = true): Observable<RemoteData<NoContent>> {
+    return createSuccessfulRemoteDataObject$({});
+  }
+
+  addRelationship(_typeId: string, _item1: Item, _item2: Item, _leftwardValue?: string, _rightwardValue?: string, _shouldRefresh = true): Observable<RemoteData<Relationship>> {
+    return createSuccessfulRemoteDataObject$(new Relationship());
+  }
+
+  refreshRelationshipItemsInCache(_item: Item): void {
+  }
+
+  getItemRelationshipsArray(_item: Item, ..._linksToFollow: FollowLinkConfig<Relationship>[]): Observable<Relationship[]> {
+    return observableOf([]);
+  }
+
+  getRelatedItems(_item: Item): Observable<Item[]> {
+    return observableOf([]);
+  }
+
+  getRelatedItemsByLabel(_item: Item, _label: string, _options?: FindListOptions): Observable<RemoteData<PaginatedList<Item>>> {
+    return createSuccessfulRemoteDataObject$(new PaginatedList<Item>());
+  }
+
+  getItemRelationshipsByLabel(_item: Item, _label: string, _options?: FindListOptions, _useCachedVersionIfAvailable = true, _reRequestOnStale = true, ..._linksToFollow: FollowLinkConfig<Relationship>[]): Observable<RemoteData<PaginatedList<Relationship>>> {
+    return createSuccessfulRemoteDataObject$(new PaginatedList<Relationship>());
+  }
+
+  getRelationshipByItemsAndLabel(_item1: Item, _item2: Item, _label: string, _options?: FindListOptions): Observable<Relationship> {
+    return observableOf(new Relationship());
+  }
+
+  setNameVariant(_listID: string, _itemID: string, _nameVariant: string): void {
+  }
+
+  getNameVariant(_listID: string, _itemID: string): Observable<string> {
+    return observableOf('');
+  }
+
+  updateNameVariant(_item1: Item, _item2: Item, _relationshipLabel: string, _nameVariant: string): Observable<RemoteData<Relationship>> {
+    return createSuccessfulRemoteDataObject$(new Relationship());
+  }
+
+  isLeftItem(_relationship: Relationship, _item: Item): Observable<boolean> {
+    return observableOf(false);
+  }
+
+  update(_object: Relationship): Observable<RemoteData<Relationship>> {
+    return createSuccessfulRemoteDataObject$(new Relationship());
+  }
+
+  searchByItemsAndType(_typeId: string, _itemUuid: string, _relationshipLabel: string, _arrayOfItemIds: string[]): Observable<RemoteData<PaginatedList<Relationship>>> {
+    return createSuccessfulRemoteDataObject$(new PaginatedList<Relationship>());
+  }
+
+  searchBy(_searchMethod: string, _options?: FindListOptions, _useCachedVersionIfAvailable?: boolean, _reRequestOnStale?: boolean, ..._linksToFollow: FollowLinkConfig<Relationship>[]): Observable<RemoteData<PaginatedList<Relationship>>> {
+    return createSuccessfulRemoteDataObject$(new PaginatedList<Relationship>());
+  }
+
+  resolveMetadataRepresentation(_metadatum: MetadataValue, _parentItem: DSpaceObject, _itemType: string): Observable<MetadataRepresentation> {
+    return observableOf({} as MetadataRepresentation);
+  }
+
+}