1 files changed, 18 insertions, 0 deletions
diff --git a/spec/models/fork_network_member_spec.rb b/spec/models/fork_network_member_spec.rb
index 532ca1fca8c..25bf596fddc 100644
--- a/spec/models/fork_network_member_spec.rb
+++ b/spec/models/fork_network_member_spec.rb
@@ -5,4 +5,22 @@ describe ForkNetworkMember do
     it { is_expected.to validate_presence_of(:project) }
     it { is_expected.to validate_presence_of(:fork_network) }
   end
+
+  describe 'destroying a ForkNetworkMember' do
+    let(:fork_network_member) { create(:fork_network_member) }
+    let(:fork_network) { fork_network_member.fork_network }
+
+    it 'removes the fork network if it was the last member' do
+      fork_network.fork_network_members.destroy_all
+
+      expect(ForkNetwork.count).to eq(0)
+    end
+
+    it 'does not destroy the fork network if there are members left' do
+      fork_network_member.destroy!
+
+      # The root of the fork network is left
+      expect(ForkNetwork.count).to eq(1)
+    end
+  end
 end