diff --git a/unit_tests/server/parameters_parser.cpp b/unit_tests/server/parameters_parser.cpp
index 8993f5a93..21a2f166a 100644
--- a/unit_tests/server/parameters_parser.cpp
+++ b/unit_tests/server/parameters_parser.cpp
@@ -50,6 +50,15 @@ BOOST_AUTO_TEST_CASE(invalid_route_urls)
                       22L);
     BOOST_CHECK_EQUAL(
         testInvalidOptions<RouteParameters>("1,2;3,4?overview=false&alternatives=foo"), 36UL);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>(""), 0);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>("1,2;3.4.unsupported"), 7);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>("1,2;3,4.json?nooptions"), 13);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>("1,2;3,4..json?nooptions"), 14);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>("1,2;3,4.0.json?nooptions"), 15);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>(std::string{"1,2;3,4"} + '\0' + ".json"), 7);
+    BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>(std::string{"1,2;3,"} + '\0'), 6);
+
+    //BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>(), );
 }
 
 BOOST_AUTO_TEST_CASE(invalid_table_urls)