1 files changed, 14 insertions, 0 deletions
diff --git a/spec/frontend/vue_shared/components/source_viewer/utils_spec.js b/spec/frontend/vue_shared/components/source_viewer/utils_spec.js
index 0ac72aa9afb..a656b06068b 100644
--- a/spec/frontend/vue_shared/components/source_viewer/utils_spec.js
+++ b/spec/frontend/vue_shared/components/source_viewer/utils_spec.js
@@ -1,6 +1,7 @@
 import { setHTMLFixture } from 'helpers/fixtures';
 import {
   calculateBlameOffset,
+  shouldRender,
   toggleBlameClasses,
 } from '~/vue_shared/components/source_viewer/utils';
 import { SOURCE_CODE_CONTENT_MOCK, BLAME_DATA_MOCK } from './mock_data';
@@ -21,6 +22,19 @@ describe('SourceViewer utils', () => {
     });
   });
 
+  describe('shouldRender', () => {
+    const commit = { sha: 'abc' };
+    const identicalSha = [{ commit }, { commit }];
+
+    it.each`
+      data            | index | result
+      ${identicalSha} | ${0}  | ${true}
+      ${identicalSha} | ${1}  | ${false}
+    `('returns $result', ({ data, index, result }) => {
+      expect(shouldRender(data, index)).toBe(result);
+    });
+  });
+
   describe('toggleBlameClasses', () => {
     it('adds classes', () => {
       toggleBlameClasses(BLAME_DATA_MOCK, true);