OZG-6108 Add missing unit test for input

alfa-client/libs/design-system/src/lib/navbar/nav-item/nav-item.component.spec.ts

@@ -32,14 +32,33 @@ describe('NavItemComponent', () => {
     expect(component).toBeTruthy();
   });
 
-  describe('routerLink', () => {
+  describe('input', () => {
+    describe('caption', () => {
+      it('should set link text', () => {
+        component.caption = 'Test caption';
+        fixture.detectChanges();
+
+        const captionElement: HTMLParagraphElement = getElementFromFixture(
+          fixture,
+          getDataTestIdOf('link-caption'),
+        );
+
+        expect(captionElement.innerHTML).toBe('Test caption');
+      });
+    });
+
+    describe('to', () => {
       it('should set href', () => {
         component.to = '/';
         fixture.detectChanges();
 
-      const linkElement = getElementFromFixture(fixture, getDataTestIdOf('link-to-/'));
+        const linkElement: HTMLAnchorElement = getElementFromFixture(
+          fixture,
+          getDataTestIdOf('link-to-/'),
+        );
 
         expect(linkElement).toHaveProperty('href');
       });
     });
   });
+});

alfa-client/libs/design-system/src/lib/navbar/nav-item/nav-item.component.ts

@@ -18,7 +18,7 @@ import { RouterLink, RouterLinkActive } from '@angular/router';
     [attr.data-test-id]="'link-to-' + to"
   >
     <ng-content select="[icon]" />
-    <p class="text-left text-sm text-text">{{ caption }}</p>
+    <p class="text-left text-sm text-text" data-test-id="link-caption">{{ caption }}</p>
   </a>`,
 })
 export class NavItemComponent {