Refactor pagination check into separate context

spec/controllers/projects/clusters_controller_spec.rb

@@ -36,15 +36,22 @@ describe Projects::ClustersController do
           expect(assigns(:inactive_count)).to eq(project.clusters.disabled.count)
         end
 
-        it 'properly paginates' do
+        context 'properly paginates' do
+          before do
             PAGE_LIMIT = 20
             project.clusters = create_list(:cluster, PAGE_LIMIT + 1, :provided_by_gcp, projects: [project])
+          end
+
+          it 'shows the first page' do
             go
+            expect(assigns(:clusters).count).to eq(PAGE_LIMIT)
+          end
 
-          expect(assigns(:clusters).count).to eq(20)
+          it 'shows the second page' do
             get :index, namespace_id: project.namespace, project_id: project, page: 2
             expect(assigns(:clusters).count).to eq(1)
           end
+        end
 
         context 'when only enabled clusters are requested' do
           it 'returns only enabled clusters' do