content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.apache.ambari.server.utils;
  
  import org.junit.Test;
  
  import junit.framework.Assert;
  
  public class HostUtilsTest {
    @Test
    public void testIsValidHostname() throws Exception {
  
      // Valid host names
      Assert.assertTrue(HostUtils.isValidHostname("localhost"));
      Assert.assertTrue(HostUtils.isValidHostname("localhost.localdomain"));
      Assert.assertTrue(HostUtils.isValidHostname("host1.example.com"));
      Assert.assertTrue(HostUtils.isValidHostname("Host1.eXample.coM"));
      Assert.assertTrue(HostUtils.isValidHostname("host-name.example.com"));
      Assert.assertTrue(HostUtils.isValidHostname("123.456.789"));
      Assert.assertTrue(HostUtils.isValidHostname("host-123-name.ex4mpl3.c0m"));
  
      // Invalid host names
      Assert.assertFalse(HostUtils.isValidHostname("host_name.example.com"));
      Assert.assertFalse(HostUtils.isValidHostname("host;name.example.com"));
      Assert.assertFalse(HostUtils.isValidHostname("host?name.example.com"));
      Assert.assertFalse(HostUtils.isValidHostname("host@name.example.com"));
      Assert.assertFalse(HostUtils.isValidHostname("host=name.example.com"));
      Assert.assertFalse(HostUtils.isValidHostname("host+name.example.com"));
      Assert.assertFalse(HostUtils.isValidHostname("host)name).example.com"));
    }
  
  }