src/test/java/org/openflow/util/U64Test.java

/**
*    Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior
*    University
* 
*    Licensed under the Apache License, Version 2.0 (the "License"); you may
*    not use this file except in compliance with the License. You may obtain
*    a copy of the License at
*
*         http://www.apache.org/licenses/LICENSE-2.0
*
*    Unless required by applicable law or agreed to in writing, software
*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
*    License for the specific language governing permissions and limitations
*    under the License.
**/

package org.openflow.util;

import java.math.BigInteger;

import junit.framework.TestCase;

public class U64Test extends TestCase {
  /**
   * Tests that we correctly translate unsigned values in and out of a long
   * @throws Exception
   */
  public void test() throws Exception {
      BigInteger val = new BigInteger("ffffffffffffffff", 16);
      TestCase.assertEquals(-1, U64.t(val));
      TestCase.assertEquals(val, U64.f(-1));
  }
}