[ACS-5645] added test cases for tags component

lib/content-services/src/lib/category/categories-management/categories-management.component.spec.ts

@@ -240,16 +240,16 @@ describe('CategoriesManagementComponent', () => {
             });
         });
 
-        describe('isEmpty', () => {
+        describe('isCategoryEmpty', () => {
             it('should return true when categories is not empty', () => {
                 component.categories = [category3, category4];
-                const result = component.isEmpty;
+                const result = component.isCategoryEmpty;
                 expect(result).toBeTrue();
             });
 
             it('should return false when categories is empty', () => {
                 component.categories = [];
-                const result = component.isEmpty;
+                const result = component.isCategoryEmpty;
                 expect(result).toBeFalse();
             });
         });

lib/content-services/src/lib/tag/tags-creator/tags-creator.component.spec.ts

@@ -322,6 +322,34 @@ describe('TagsCreatorComponent', () => {
             expect(getNameInput()).toBe(document.activeElement as HTMLInputElement);
         }));
 
+        describe('isNameTagsVisible', () => {
+            it('should return true when tagNameControlVisible is true', () => {
+                component.tagNameControlVisible = true;
+                const result = component.isNameTagsVisible;
+                expect(result).toBeTrue();
+            });
+
+            it('should return false when tagNameControlVisible is false and tags length is 0', () => {
+                component.tagNameControlVisible = false;
+                component.tags = [];
+                const result = component.isNameTagsVisible;
+                expect(result).toBeFalse();
+            });
+        });
+
+        describe('isTagsEmpty', () => {
+            it('should return true when tags is not empty', () => {
+                component.tags = ['new tag 1', 'new tag 2'];
+                const result = component.isTagsEmpty;
+                expect(result).toBeTrue();
+            });
+            it('should return false when tags is empty', () => {
+                component.tags = [];
+                const result = component.isTagsEmpty;
+                expect(result).toBeFalse();
+            });
+        });
+
         describe('Errors', () => {
             /**
              * Get first error

lib/content-services/src/lib/tag/tags-creator/tags-creator.component.ts

@@ -104,7 +104,7 @@ export class TagsCreatorComponent implements OnInit, OnDestroy {
         if (tagNameControlVisible) {
             this._existingTagsPanelVisible = true;
             setTimeout(() => {
-                this.tagNameInputElement.nativeElement.scrollIntoView();
+                this.tagNameInputElement?.nativeElement?.scrollIntoView();
             });
         } else {
             this._existingTagsPanelVisible = false;