code: @Test public void should_exception_when_embedded_already_started_with_another_cql_port() throws Exception {
    String cassandraHost=System.getProperty(CassandraEmbeddedServer.CASSANDRA_HOST);
    if (StringUtils.isBlank(cassandraHost)) {
      exception.expect(IllegalArgumentException.class);
      exception.expectMessage("An embedded Cassandra server is already listening to CQL port");
    }
    CassandraEmbeddedServerBuilder.noEntityPackages().withKeyspaceName("test_keyspace").withCQLPort(9500).buildNativeSessionOnly();
  }
  