DSC-1446 fix tests, add missing imports

Author: FrancescoMolinaro

src/app/core/eperson/group-data.service.ts

@@ -41,6 +41,7 @@ import { Operation } from 'fast-json-patch';
 import { RestRequestMethod } from '../data/rest-request-method';
 import { dataService } from '../data/base/data-service.decorator';
 import { getGroupEditRoute } from '../../access-control/access-control-routing-paths';
+import { isNotEmpty } from '../../shared/empty.util';
 
 const groupRegistryStateSelector = (state: AppState) => state.groupRegistry;
 const editGroupSelector = createSelector(groupRegistryStateSelector, (groupRegistryState: GroupRegistryState) => groupRegistryState.editGroup);

src/app/cris-layout/cris-layout-matrix/cris-layout-box-container/boxes/metadata/rendering-types/thumbnail/thumbnail.component.spec.ts

@@ -152,7 +152,7 @@ describe('ThumbnailComponent', () => {
       }));
 
       it('should show default thumbnail', () => {
-        expect(component.default).toBe('assets/images/person-placeholder.svg');
+        expect(component.default).toBe('assets/images/file-placeholder.svg');
       });
 
     });
@@ -172,7 +172,7 @@ describe('ThumbnailComponent', () => {
       }));
 
       it('should show default thumbnail', () => {
-        expect(component.default).toBe('assets/images/person-placeholder.svg');
+        expect(component.default).toBe('assets/images/file-placeholder.svg');
       });
 
     });
@@ -239,7 +239,7 @@ describe('ThumbnailComponent', () => {
       });
 
       it('should show default thumbnail', () => {
-        expect(component.default).toBe('assets/images/person-placeholder.svg');
+        expect(component.default).toBe('assets/images/file-placeholder.svg');
       });
 
     });
@@ -254,7 +254,7 @@ describe('ThumbnailComponent', () => {
       });
 
       it('should not show bitstream content image src but the default image', () => {
-        expect(component.default).toBe('assets/images/person-placeholder.svg');
+        expect(component.default).toBe('assets/images/file-placeholder.svg');
       });
 
     });
@@ -269,7 +269,7 @@ describe('ThumbnailComponent', () => {
       });
 
       it('should not show thumbnail content image src but the default image', () => {
-        expect(component.default).toBe('assets/images/person-placeholder.svg');
+        expect(component.default).toBe('assets/images/file-placeholder.svg');
       });
 
     });
@@ -284,7 +284,7 @@ describe('ThumbnailComponent', () => {
       });
 
       it('should not show thumbnail content image src but the default image', () => {
-        expect(component.default).toBe('assets/images/person-placeholder.svg');
+        expect(component.default).toBe('assets/images/file-placeholder.svg');
       });
 
     });