diff --git a/src/test/net_tests.cpp b/src/test/net_tests.cpp
--- a/src/test/net_tests.cpp
+++ b/src/test/net_tests.cpp
@@ -83,6 +83,17 @@
 
 BOOST_FIXTURE_TEST_SUITE(net_tests, BasicTestingSetup)
 
+BOOST_AUTO_TEST_CASE(cnode_listen_port) {
+    // test default
+    unsigned short port = GetListenPort();
+    BOOST_CHECK(port == Params().GetDefaultPort());
+    // test set port
+    unsigned short altPort = 12345;
+    gArgs.SoftSetArg("-port", std::to_string(altPort));
+    port = GetListenPort();
+    BOOST_CHECK(port == altPort);
+}
+
 BOOST_AUTO_TEST_CASE(caddrdb_read) {
     CAddrManUncorrupted addrmanUncorrupted;
     addrmanUncorrupted.MakeDeterministic();