Match Environment Spec Search Case Insensitively

app/models/environment.rb

@@ -54,7 +54,7 @@ class Environment < ApplicationRecord
   # Search environments which have names like the given query.
   # Do not set a large limit unless you've confirmed that it works on gitlab.com scale.
   scope :for_name_like, -> (query, limit: 5) do
-    where('name LIKE ?', "#{sanitize_sql_like(query)}%").limit(limit)
+    where(arel_table[:name].matches("#{sanitize_sql_like query}%")).limit(limit)
   end
 
   scope :for_project, -> (project) { where(project_id: project) }

ee/changelogs/unreleased/case-insensitive-env-search.yml

+---
+title: Match environment names case insensitively for feature flag spec search
+merge_request: 16691
+author:
+type: fixed

spec/controllers/projects/environments_controller_spec.rb

@@ -701,6 +701,16 @@ describe Projects::EnvironmentsController do
         expect(response).to have_gitlab_http_status(:no_content)
       end
     end
+
+    context 'when query matches case insensitively' do
+      let(:query) { 'Prod' }
+
+      it 'returns matched results' do
+        get :search, params: environment_params(format: :json, query: query)
+
+        expect(json_response).to contain_exactly('production')
+      end
+    end
   end
 
   def environment_params(opts = {})