Add spec for iteration sidebar link

ee/app/assets/javascripts/sidebar/components/iteration_select.vue

@@ -90,12 +90,14 @@ export default {
     };
   },
   computed: {
+    iteration() {
+      return this.iterations.find(({ id }) => id === this.currentIteration);
+    },
     iterationTitle() {
-      // NOTE: Optional chaining guards when search result is empty
-      return this.iterations.find(({ id }) => id === this.currentIteration)?.title;
+      return this.iteration?.title;
     },
     iterationUrl() {
-      return this.iterations.find(({ id }) => id === this.currentIteration)?.webUrl;
+      return this.iteration?.webUrl;
     },
     showNoIterationContent() {
       return !this.editing && !this.currentIteration;

ee/spec/frontend/sidebar/components/iteration_select_spec.js

 import { shallowMount } from '@vue/test-utils';
-import { GlNewDropdown, GlNewDropdownItem, GlButton, GlSearchBoxByType } from '@gitlab/ui';
+import { GlNewDropdown, GlNewDropdownItem, GlButton, GlLink, GlSearchBoxByType } from '@gitlab/ui';
 import createFlash from '~/flash';
 import IterationSelect from 'ee/sidebar/components/iteration_select.vue';
 import { iterationSelectTextMap } from 'ee/sidebar/constants';
@@ -63,6 +63,17 @@ describe('IterationSelect', () => {
 
       expect(wrapper.find('[data-testid="select-iteration"]').text()).toBe('title');
     });
+
+    it('links to the current iteration', () => {
+      createComponent({
+        data: {
+          iterations: [{ id: 'id', title: 'title', webUrl: 'webUrl' }],
+          currentIteration: 'id',
+        },
+      });
+
+      expect(wrapper.find(GlLink).attributes().href).toBe('webUrl');
+    });
   });
 
   describe('when a user cannot edit', () => {