Add headers to files in the tree list on merge requests

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/54807

1 files changed, 16 insertions, 0 deletions

diff --git a/spec/javascripts/lib/utils/text_utility_spec.js b/spec/javascripts/lib/utils/text_utility_spec.js
index 92ebfc38722..0a266b19ea5 100644
--- a/spec/javascripts/lib/utils/text_utility_spec.js
+++ b/spec/javascripts/lib/utils/text_utility_spec.js
@@ -135,4 +135,20 @@ describe('text_utility', () => {
       expect(textUtils.getFirstCharacterCapitalized(null)).toEqual('');
     });
   });
+
+  describe('truncatePathMiddleToLength', () => {
+    it('does not truncate text', () => {
+      expect(textUtils.truncatePathMiddleToLength('app/test', 50)).toEqual('app/test');
+    });
+
+    it('truncates middle of the path', () => {
+      expect(textUtils.truncatePathMiddleToLength('app/test/diff', 13)).toEqual('app/…/diff');
+    });
+
+    it('truncates multiple times in the middle of the path', () => {
+      expect(textUtils.truncatePathMiddleToLength('app/test/merge_request/diff', 13)).toEqual(
+        'app/…/…/diff',
+      );
+    });
+  });
 });