Base new MR title on commit title if there's only one.

1 files changed, 8 insertions, 3 deletions

diff --git a/app/services/merge_requests/build_service.rb b/app/services/merge_requests/build_service.rb
index 859c3f56b2b..30e0cbae024 100644
--- a/app/services/merge_requests/build_service.rb
+++ b/app/services/merge_requests/build_service.rb
@@ -16,9 +16,6 @@ module MergeRequests
         return build_failed(merge_request, nil)
       end
 
-      # Generate suggested MR title based on source branch name
-      merge_request.title = merge_request.source_branch.titleize.humanize
-
       compare_result = CompareService.new.execute(
         current_user,
         merge_request.source_project,
@@ -52,6 +49,14 @@ module MergeRequests
         merge_request.compare_failed = false
       end
 
+      commits = merge_request.compare_commits
+      merge_request.title = \
+        if commits && commits.count == 1
+          commits.first.title
+        else
+          merge_request.source_branch.titleize.humanize
+        end
+
       merge_request
 
     rescue Gitlab::Satellite::BranchesWithoutParent