diff --git a/test/test_ethernet_interface.cpp b/test/test_ethernet_interface.cpp
index ab2279f..67a26dc 100644
--- a/test/test_ethernet_interface.cpp
+++ b/test/test_ethernet_interface.cpp
@@ -204,5 +204,19 @@
     EXPECT_EQ(servers, values);
 }
 
+TEST_F(TestEthernetInterface, addGateway)
+{
+    std::string gateway = "10.3.3.3";
+    interface.defaultGateway(gateway);
+    EXPECT_EQ(interface.defaultGateway(), gateway);
+}
+
+TEST_F(TestEthernetInterface, addGateway6)
+{
+    std::string gateway6 = "ffff:ffff:ffff:fe80::1";
+    interface.defaultGateway6(gateway6);
+    EXPECT_EQ(interface.defaultGateway6(), gateway6);
+}
+
 } // namespace network
 } // namespace phosphor