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Add datatest-id and use
logical OR operator.

app/assets/javascripts/vue_shared/components/commit.vue

@@ -134,7 +134,7 @@ export default {
         : null;
     },
     refUrl() {
-      return this.commitRef.ref_url ?? this.commitRef.path;
+      return this.commitRef.ref_url || this.commitRef.path;
     },
   },
 };
@@ -156,9 +156,15 @@ export default {
         class="ref-name"
         >{{ mergeRequestRef.iid }}</gl-link
       >
-      <gl-link v-else v-gl-tooltip :href="refUrl" :title="commitRef.name" class="ref-name">{{
-        commitRef.name
-      }}</gl-link>
+      <gl-link
+        v-else
+        v-gl-tooltip
+        :href="refUrl"
+        :title="commitRef.name"
+        class="ref-name"
+        data-testid="ref-name"
+        >{{ commitRef.name }}</gl-link
+      >
     </template>
     <gl-icon name="commit" class="commit-icon js-commit-icon" />
 

spec/frontend/vue_shared/components/commit_spec.js

@@ -2,6 +2,7 @@ import { shallowMount } from '@vue/test-utils';
 import { GlIcon } from '@gitlab/ui';
 import CommitComponent from '~/vue_shared/components/commit.vue';
 import UserAvatarLink from '~/vue_shared/components/user_avatar/user_avatar_link.vue';
+import { extendedWrapper } from 'helpers/vue_test_utils_helper';
 
 describe('Commit component', () => {
   let props;
@@ -13,11 +14,14 @@ describe('Commit component', () => {
   };
 
   const findUserAvatar = () => wrapper.find(UserAvatarLink);
+  const findRefName = () => wrapper.findByTestId('ref-name');
 
   const createComponent = (propsData) => {
-    wrapper = shallowMount(CommitComponent, {
+    wrapper = extendedWrapper(
+      shallowMount(CommitComponent, {
         propsData,
-    });
+      }),
+    );
   };
 
   afterEach(() => {
@@ -235,8 +239,8 @@ describe('Commit component', () => {
 
       createComponent(props);
 
-      expect(wrapper.find('.ref-name').exists()).toBe(true);
-      expect(wrapper.find('.ref-name').attributes('href')).toBe(props.commitRef.path);
+      expect(findRefName().exists()).toBe(true);
+      expect(findRefName().attributes('href')).toBe(props.commitRef.path);
     });
   });
 });