Fix issuable spec duplication

.rubocop.yml

@@ -404,7 +404,6 @@ RSpec/RepeatedExample:
     - 'spec/lib/gitlab/closing_issue_extractor_spec.rb'
     - 'spec/lib/gitlab/danger/changelog_spec.rb'
     - 'spec/lib/gitlab/import_export/project/relation_factory_spec.rb'
-    - 'spec/models/concerns/issuable_spec.rb'
     - 'spec/models/project_services/chat_message/pipeline_message_spec.rb'
     - 'spec/routing/admin_routing_spec.rb'
     - 'spec/rubocop/cop/migration/update_large_table_spec.rb'

changelogs/unreleased/refactor-issuable-spec.yml

+---
+title: Fix issuable duplicate spec
+merge_request: 28632
+author: Rajendra Kadam
+type: added

spec/models/concerns/issuable_spec.rb

@@ -159,8 +159,7 @@ describe Issuable do
     end
 
     it 'returns issues with a partially matching description' do
-      expect(issuable_class.full_search(searchable_issue.description))
-        .to eq([searchable_issue])
+      expect(issuable_class.full_search('cut')).to eq([searchable_issue])
     end
 
     it 'returns issues with a matching description regardless of the casing' do