FIX: Whoops, there's a test for this

FIX: Whoops, there’s a test for this

diff --git a/spec/discourse_code_review/lib/github_repo_spec.rb b/spec/discourse_code_review/lib/github_repo_spec.rb
index bdea7e2..b799f66 100644
--- a/spec/discourse_code_review/lib/github_repo_spec.rb
+++ b/spec/discourse_code_review/lib/github_repo_spec.rb
@@ -59,7 +59,7 @@ module DiscourseCodeReview
 
         commits = repo.commits_since("origin/master~2", merge_github_info: false)
 
-        expect(commits.last[:diff]).to eq("")
+        expect(commits.last[:diff]).to eq("MERGE COMMIT")
       end
     end
 

GitHub sha: d9bb486a