Actually that test doesn't make sense, and I think it only succeeds by raciness.

Author: Simon MacMullen

test/src/com/rabbitmq/examples/TestMain.java

@@ -120,13 +120,6 @@ public static void runConnectionNegotiationTest(final String hostName, final int
             throw new RuntimeException("expected socket close");
         } catch (IOException e) {}
 
-        //should succeed IF the highest version supported by the
-        //server is a version supported by this client
-        /* TODO: re-enable this test once the client speaks 0-9-1
-        conn = new TestConnectionFactory(100, 0, hostName, portNumber).newConnection();
-        conn.close();
-        */
-
         ConnectionFactory factory;
         factory = new ConnectionFactory();
         factory.setUsername("invalid");