Merge branch '55090-fix-group-clusters-no-project-namespace' into 'master'

Resolve "Project Namespace field should be removed from Group Cluster, Add existing"

Closes #55090

See merge request gitlab-org/gitlab-ce!23679

(cherry picked from commit 2d85d362c626f7c4afdc3e8f7123672b3a6363c0)

6cbc982c Add failing feature spec
22289352 Set cluster_type for a new cluster
01dc3c96 Refactor to re-use similar block
ecda32ea Extract Clusters::BuildService

4 files changed, 178 insertions, 6 deletions

diff --git a/app/controllers/clusters/clusters_controller.rb b/app/controllers/clusters/clusters_controller.rb
index 2e9c77ae55c..9aa8b758539 100644
--- a/app/controllers/clusters/clusters_controller.rb
+++ b/app/controllers/clusters/clusters_controller.rb
@@ -181,15 +181,15 @@ class Clusters::ClustersController < Clusters::BaseController
   end
 
   def gcp_cluster
-    @gcp_cluster = ::Clusters::Cluster.new.tap do |cluster|
-      cluster.build_provider_gcp
-    end.present(current_user: current_user)
+    cluster = Clusters::BuildService.new(clusterable.subject).execute
+    cluster.build_provider_gcp
+    @gcp_cluster = cluster.present(current_user: current_user)
   end
 
   def user_cluster
-    @user_cluster = ::Clusters::Cluster.new.tap do |cluster|
-      cluster.build_platform_kubernetes
-    end.present(current_user: current_user)
+    cluster = Clusters::BuildService.new(clusterable.subject).execute
+    cluster.build_platform_kubernetes
+    @user_cluster = cluster.present(current_user: current_user)
   end
 
   def validate_gcp_token
diff --git a/app/services/clusters/build_service.rb b/app/services/clusters/build_service.rb
new file mode 100644
index 00000000000..8de73831164
--- /dev/null
+++ b/app/services/clusters/build_service.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+module Clusters
+  class BuildService
+    def initialize(subject)
+      @subject = subject
+    end
+
+    def execute
+      ::Clusters::Cluster.new.tap do |cluster|
+        case @subject
+        when ::Project
+          cluster.cluster_type = :project_type
+        when ::Group
+          cluster.cluster_type = :group_type
+        else
+          raise NotImplementedError
+        end
+      end
+    end
+  end
+end
diff --git a/spec/features/groups/clusters/user_spec.rb b/spec/features/groups/clusters/user_spec.rb
new file mode 100644
index 00000000000..2410cd92e3f
--- /dev/null
+++ b/spec/features/groups/clusters/user_spec.rb
@@ -0,0 +1,126 @@
+# 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
diff --git a/spec/services/clusters/build_service_spec.rb b/spec/services/clusters/build_service_spec.rb
new file mode 100644
index 00000000000..da0cb42b3a1
--- /dev/null
+++ b/spec/services/clusters/build_service_spec.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Clusters::BuildService do
+  describe '#execute' do
+    subject { described_class.new(cluster_subject).execute }
+
+    describe 'when cluster subject is a project' do
+      let(:cluster_subject) { build(:project) }
+
+      it 'sets the cluster_type to project_type' do
+        is_expected.to be_project_type
+      end
+    end
+
+    describe 'when cluster subject is a group' do
+      let(:cluster_subject) { build(:group) }
+
+      it 'sets the cluster_type to group_type' do
+        is_expected.to be_group_type
+      end
+    end
+  end
+end