Ignore blank searches

app/finders/alert_management/alerts_finder.rb

@@ -35,7 +35,7 @@ module AlertManagement
     end
 
     def by_search(collection)
-      params[:search] ? collection.search(params[:search]) : collection
+      params[:search].present? ? collection.search(params[:search]) : collection
     end
 
     def sort(collection)

spec/finders/alert_management/alerts_finder_spec.rb

@@ -227,7 +227,6 @@ describe AlertManagement::AlertsFinder, '#execute' do
       let_it_be(:alert) do
         create(:alert_management_alert,
           :with_fingerprint,
-          project: project,
           title: 'Title',
           description: 'Desc',
           service: 'Service',
@@ -235,6 +234,12 @@ describe AlertManagement::AlertsFinder, '#execute' do
         )
       end
 
+      before do
+        alert.project.add_developer(current_user)
+      end
+
+      subject { described_class.new(current_user, alert.project, params).execute }
+
       context 'searching title' do
         let(:params) { { search: alert.title } }
 
@@ -264,6 +269,12 @@ describe AlertManagement::AlertsFinder, '#execute' do
 
         it { is_expected.to be_empty }
       end
+
+      context 'empty search' do
+        let(:params) { { search: ' ' } }
+
+        it { is_expected.to match_array([alert]) }
+      end
     end
   end
 end