add spec for plus_relatives_and_oc_producers

spec/models/enterprise_spec.rb

@@ -599,4 +599,19 @@ describe Enterprise do
       end
     end
   end
+
+  describe "#plus_relatives_and_oc_producers" do
+    it "does not find non-produders " do
+      supplier = create(:supplier_enterprise)
+      distributor = create(:distributor_enterprise, is_primary_producer: false)
+      product = create(:product)
+      order_cycle = create(
+        :simple_order_cycle,
+        suppliers: [supplier],
+        distributors: [distributor],
+        variants: [product.master]
+      )
+      expect(distributor.plus_relatives_and_oc_producers(order_cycle)).to eq([supplier])
+    end
+  end
 end