Fix duplication of commits header on commits page

1 files changed, 26 insertions, 0 deletions

diff --git a/spec/javascripts/commits_spec.js b/spec/javascripts/commits_spec.js
index 187db7485a5..44a4386b250 100644
--- a/spec/javascripts/commits_spec.js
+++ b/spec/javascripts/commits_spec.js
@@ -28,6 +28,32 @@ import '~/commits';
       expect(CommitsList).toBeDefined();
     });
 
+    describe('processCommits', () => {
+      it('should join commit headers', () => {
+        CommitsList.$contentList = $(`
+          <div>
+            <li class="commit-header" data-day="2016-09-20">
+              <span class="day">20 Sep, 2016</span>
+              <span class="commits-count">1 commit</span>
+            </li>
+            <li class="commit"></li>
+          </div>
+        `);
+
+        const data = `
+          <li class="commit-header" data-day="2016-09-20">
+            <span class="day">20 Sep, 2016</span>
+            <span class="commits-count">1 commit</span>
+          </li>
+          <li class="commit"></li>
+        `;
+
+        // The last commit header should be removed
+        // since the previous one has the same data-day value.
+        expect(CommitsList.processCommits(data).find('li.commit-header').length).toBe(0);
+      });
+    });
+
     describe('on entering input', () => {
       let ajaxSpy;