@Test
    public void startOnInvalidGraphWithDefaultGraphManager() throws Exception {
        final Settings settings = getBaseSettings();
        settings.graphs.clear();
        settings.graphs.put("invalid", "conf/invalidPath");
        startServer(settings);
    }
TINKERPOP-2436 The gremlin server starts even if all graphs instantiation has
failed
gremlin-server/src/test/java/org/apache/tinkerpop/gremlin/server/GremlinServerShutdownIntegrationTest.java