Add failing feature spec

That shows that we cannot create a new group cluster

spec/features/groups/clusters/user_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'User Cluster', :js do
+  include GoogleApi::CloudPlatformHelpers
+
+  let(:group) { create(:group) }
+  let(:user) { create(:user) }
+
+  before do
+    group.add_maintainer(user)
+    gitlab_sign_in(user)
+
+    allow(Groups::ClustersController).to receive(:STATUS_POLLING_INTERVAL) { 100 }
+    allow_any_instance_of(Clusters::Gcp::Kubernetes::CreateOrUpdateNamespaceService).to receive(:execute)
+  end
+
+  context 'when user does not have a cluster and visits cluster index page' do
+    before do
+      visit group_clusters_path(group)
+
+      click_link 'Add Kubernetes cluster'
+      click_link 'Add existing cluster'
+    end
+
+    context 'when user filled form with valid parameters' do
+      shared_examples 'valid cluster user form' do
+        it 'user sees a cluster details page' do
+          subject
+
+          expect(page).to have_content('Kubernetes cluster integration')
+          expect(page.find_field('cluster[name]').value).to eq('dev-cluster')
+          expect(page.find_field('cluster[platform_kubernetes_attributes][api_url]').value)
+            .to have_content('http://example.com')
+          expect(page.find_field('cluster[platform_kubernetes_attributes][token]').value)
+            .to have_content('my-token')
+        end
+      end
+
+      before do
+        fill_in 'cluster_name', with: 'dev-cluster'
+        fill_in 'cluster_platform_kubernetes_attributes_api_url', with: 'http://example.com'
+        fill_in 'cluster_platform_kubernetes_attributes_token', with: 'my-token'
+      end
+
+      subject { click_button 'Add Kubernetes cluster' }
+
+      it_behaves_like 'valid cluster user form'
+
+      context 'RBAC is enabled for the cluster' do
+        before do
+          check 'cluster_platform_kubernetes_attributes_authorization_type'
+        end
+
+        it_behaves_like 'valid cluster user form'
+
+        it 'user sees a cluster details page with RBAC enabled' do
+          subject
+
+          expect(page.find_field('cluster[platform_kubernetes_attributes][authorization_type]', disabled: true)).to be_checked
+        end
+      end
+    end
+
+    context 'when user filled form with invalid parameters' do
+      before do
+        click_button 'Add Kubernetes cluster'
+      end
+
+      it 'user sees a validation error' do
+        expect(page).to have_css('#error_explanation')
+      end
+    end
+  end
+
+  context 'when user does have a cluster and visits cluster page' do
+    let(:cluster) { create(:cluster, :provided_by_user, cluster_type: :group_type, groups: [group]) }
+
+    before do
+      visit group_cluster_path(group, cluster)
+    end
+
+    it 'user sees a cluster details page' do
+      expect(page).to have_button('Save changes')
+    end
+
+    context 'when user disables the cluster' do
+      before do
+        page.find(:css, '.js-cluster-enable-toggle-area .js-project-feature-toggle').click
+        page.within('#cluster-integration') { click_button 'Save changes' }
+      end
+
+      it 'user sees the successful message' do
+        expect(page).to have_content('Kubernetes cluster was successfully updated.')
+      end
+    end
+
+    context 'when user changes cluster parameters' do
+      before do
+        fill_in 'cluster_name', with: 'my-dev-cluster'
+        fill_in 'cluster_platform_kubernetes_attributes_token', with: 'new-token'
+        page.within('#js-cluster-details') { click_button 'Save changes' }
+      end
+
+      it 'user sees the successful message' do
+        expect(page).to have_content('Kubernetes cluster was successfully updated.')
+        expect(cluster.reload.name).to eq('my-dev-cluster')
+        expect(cluster.reload.platform_kubernetes.token).to eq('new-token')
+      end
+    end
+
+    context 'when user destroy the cluster' do
+      before do
+        page.accept_confirm do
+          click_link 'Remove integration'
+        end
+      end
+
+      it 'user sees creation form with the successful message' do
+        expect(page).to have_content('Kubernetes cluster integration was successfully removed.')
+        expect(page).to have_link('Add Kubernetes cluster')
+      end
+    end
+  end
+end