1 files changed, 22 insertions, 0 deletions
diff --git a/spec/support/shared_examples/namespaces/traversal_scope_examples.rb b/spec/support/shared_examples/namespaces/traversal_scope_examples.rb
index f1ace9878e9..45da1d382c1 100644
--- a/spec/support/shared_examples/namespaces/traversal_scope_examples.rb
+++ b/spec/support/shared_examples/namespaces/traversal_scope_examples.rb
@@ -238,6 +238,12 @@ RSpec.shared_examples 'namespace traversal scopes' do
       subject { described_class.where(id: [nested_group_1, nested_group_2]).self_and_descendants(include_self: false) }
 
       it { is_expected.to contain_exactly(deep_nested_group_1, deep_nested_group_2) }
+
+      context 'with duplicate descendants' do
+        subject { described_class.where(id: [group_1, nested_group_1]).self_and_descendants(include_self: false) }
+
+        it { is_expected.to contain_exactly(nested_group_1, deep_nested_group_1) }
+      end
     end
 
     context 'with offset and limit' do
@@ -267,6 +273,14 @@ RSpec.shared_examples 'namespace traversal scopes' do
 
       include_examples '.self_and_descendants'
     end
+
+    context 'with linear_scopes_superset feature flag disabled' do
+      before do
+        stub_feature_flags(linear_scopes_superset: false)
+      end
+
+      include_examples '.self_and_descendants'
+    end
   end
 
   shared_examples '.self_and_descendant_ids' do
@@ -310,6 +324,14 @@ RSpec.shared_examples 'namespace traversal scopes' do
 
       include_examples '.self_and_descendant_ids'
     end
+
+    context 'with linear_scopes_superset feature flag disabled' do
+      before do
+        stub_feature_flags(linear_scopes_superset: false)
+      end
+
+      include_examples '.self_and_descendant_ids'
+    end
   end
 
   shared_examples '.self_and_hierarchy' do