Project namespace related spec fixes

calling the project namespace factory tries to create
a duplicate namespace because one is already created as
part of the creating project throguh project factory.

app/services/groups/transfer_service.rb

@@ -96,9 +96,7 @@ module Groups
 
     # rubocop: disable CodeReuse/ActiveRecord
     def namespace_with_same_path?
-      # Only check user namespace and Group, the ProjectNamespace will fail at project level
-      # TODO 70972: review the exclusion of ProjectNamespace
-      Namespace.without_project_namespaces.exists?(path: @group.path, parent: @new_parent_group)
+      Namespace.exists?(path: @group.path, parent: @new_parent_group)
     end
     # rubocop: enable CodeReuse/ActiveRecord
 

ee/spec/requests/api/namespaces_spec.rb

@@ -13,7 +13,7 @@ RSpec.describe API::Namespaces do
   let_it_be(:ultimate_plan) { create(:ultimate_plan) }
   let_it_be(:project) { create(:project, namespace: group2) }
   let_it_be(:project) { create(:project, namespace: group2, name: group2.name, path: group2.path) }
-  let_it_be(:project_namespace) { create(:project_namespace, project: project) }
+  let_it_be(:project_namespace) { project.project_namespace }
 
   describe "GET /namespaces" do
     context "when authenticated as admin" do

spec/factories/namespaces/project_namespaces.rb

@@ -2,7 +2,7 @@
 
 FactoryBot.define do
   factory :project_namespace, class: 'Namespaces::ProjectNamespace' do
-    project
+    association :project, factory: :project, strategy: :build
     parent { project.namespace }
     visibility_level { project.visibility_level }
     name { project.name }

spec/models/group_spec.rb

@@ -566,7 +566,7 @@ RSpec.describe Group do
 
       context 'when project namespace exists in the group' do
         let!(:project) { create(:project, group: group) }
-        let!(:project_namespace) { create(:project_namespace, project: project) }
+        let!(:project_namespace) { project.project_namespace }
 
         it 'filters out project namespace' do
           expect(group.descendants.find_by_id(project_namespace.id)).to be_nil

spec/policies/namespaces/project_namespace_policy_spec.rb

@@ -4,7 +4,8 @@ require 'spec_helper'
 
 RSpec.describe NamespacePolicy do
   let_it_be(:parent) { create(:namespace) }
-  let_it_be(:namespace) { create(:project_namespace, parent: parent) }
+  let_it_be(:project) { create(:project, namespace: parent) }
+  let_it_be(:namespace) { project.project_namespace }
 
   let(:permissions) do
     [:owner_access, :create_projects, :admin_namespace, :read_namespace,

spec/requests/api/namespaces_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe API::Namespaces do
   let_it_be(:group1) { create(:group, name: 'group.one') }
   let_it_be(:group2) { create(:group, :nested) }
   let_it_be(:project) { create(:project, namespace: group2, name: group2.name, path: group2.path) }
-  let_it_be(:project_namespace) { create(:project_namespace, project: project) }
+  let_it_be(:project_namespace) { project.project_namespace }
 
   describe "GET /namespaces" do
     context "when unauthenticated" do

spec/services/groups/transfer_service_spec.rb

@@ -248,20 +248,28 @@ RSpec.describe Groups::TransferService, :sidekiq_inline do
         let_it_be(:membership) { create(:group_member, :owner, group: new_parent_group, user: user) }
         let_it_be(:project) { create(:project, path: 'foo', namespace: new_parent_group) }
 
-        before do
-          group.update_attribute(:path, 'foo')
+        it 'adds an error on group' do
+          expect(transfer_service.execute(new_parent_group)).to be_falsy
+          expect(transfer_service.error).to eq('Transfer failed: The parent group already has a subgroup or a project with the same path.')
         end
 
-        it 'returns false' do
-          expect(transfer_service.execute(new_parent_group)).to be_falsy
+        context 'with project namespace' do
+          before do
+            project_namespace = project.project_namespace
+            project.update!(project_namespace_id: nil)
+            project_namespace.destroy!
           end
 
           it 'adds an error on group' do
-          transfer_service.execute(new_parent_group)
+            expect(transfer_service.execute(new_parent_group)).to be_falsy
             expect(transfer_service.error).to eq('Transfer failed: Validation failed: Group URL has already been taken')
           end
+        end
+      end
 
       context 'when projects have project namespaces' do
+        let_it_be(:project) { create(:project, path: 'foo', namespace: new_parent_group) }
+
         before do
           transfer_service.execute(new_parent_group)
         end
@@ -271,7 +279,6 @@ RSpec.describe Groups::TransferService, :sidekiq_inline do
           let(:projects_with_project_namespace) { [project] }
         end
       end
-      end
 
       context 'when the group is allowed to be transferred' do
         let_it_be(:new_parent_group, reload: true) { create(:group, :public) }

spec/support/shared_examples/namespaces/traversal_examples.rb

@@ -23,7 +23,7 @@ RSpec.shared_examples 'namespace traversal' do
   let_it_be(:very_deep_nested_group) { create(:group, parent: deep_nested_group) }
   let_it_be(:groups) { [group, nested_group, deep_nested_group, very_deep_nested_group] }
   let_it_be(:project) { create(:project, group: nested_group) }
-  let_it_be(:project_namespace) { create(:project_namespace, project: project) }
+  let_it_be(:project_namespace) { project.project_namespace }
 
   describe '#root_ancestor' do
     it 'returns the correct root ancestor' do