1 files changed, 53 insertions, 0 deletions
diff --git a/spec/models/group_spec.rb b/spec/models/group_spec.rb
index 528ce661370..96d02eacf8a 100644
--- a/spec/models/group_spec.rb
+++ b/spec/models/group_spec.rb
@@ -64,6 +64,59 @@ RSpec.describe Group do
     it { is_expected.to validate_presence_of :two_factor_grace_period }
     it { is_expected.to validate_numericality_of(:two_factor_grace_period).is_greater_than_or_equal_to(0) }
 
+    context 'validating the parent of a group' do
+      context 'when the group has no parent' do
+        it 'allows a group to have no parent associated with it' do
+          group = build(:group)
+
+          expect(group).to be_valid
+        end
+      end
+
+      context 'when the group has a parent' do
+        it 'does not allow a group to have a namespace as its parent' do
+          group = build(:group, parent: build(:namespace))
+
+          expect(group).not_to be_valid
+          expect(group.errors[:parent_id].first).to eq('a group cannot have a user namespace as its parent')
+        end
+
+        it 'allows a group to have another group as its parent' do
+          group = build(:group, parent: build(:group))
+
+          expect(group).to be_valid
+        end
+      end
+
+      context 'when the feature flag `validate_namespace_parent_type` is disabled' do
+        before do
+          stub_feature_flags(validate_namespace_parent_type: false)
+        end
+
+        context 'when the group has no parent' do
+          it 'allows a group to have no parent associated with it' do
+            group = build(:group)
+
+            expect(group).to be_valid
+          end
+        end
+
+        context 'when the group has a parent' do
+          it 'allows a group to have a namespace as its parent' do
+            group = build(:group, parent: build(:namespace))
+
+            expect(group).to be_valid
+          end
+
+          it 'allows a group to have another group as its parent' do
+            group = build(:group, parent: build(:group))
+
+            expect(group).to be_valid
+          end
+        end
+      end
+    end
+
     describe 'path validation' do
       it 'rejects paths reserved on the root namespace when the group has no parent' do
         group = build(:group, path: 'api')