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   * 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.cassandra.cql3.statements;
  
  import com.google.common.collect.Sets;
  import org.junit.Assert;
  import org.junit.Test;
  
  import org.apache.cassandra.auth.CIDRPermissions;
  import org.apache.cassandra.auth.DCPermissions;
  import org.apache.cassandra.cql3.CQLStatement;
  import org.apache.cassandra.cql3.QueryProcessor;
  
  public class AlterRoleStatementTest
  {
      private static AlterRoleStatement parse(String query)
      {
          CQLStatement.Raw stmt = QueryProcessor.parseStatement(query);
          Assert.assertTrue(stmt instanceof AlterRoleStatement);
          return (AlterRoleStatement) stmt;
      }
  
      private static DCPermissions dcPerms(String query)
      {
          return parse(query).dcPermissions;
      }
  
      private static CIDRPermissions cidrPerms(String query)
      {
          return parse(query).cidrPermissions;
      }
  
      @Test
      public void dcsNotSpecified()
      {
          Assert.assertNull(dcPerms("ALTER ROLE r1 WITH PASSWORD = 'password'"));
      }
  
      @Test
      public void dcsAllSpecified()
      {
          DCPermissions dcPerms = dcPerms("ALTER ROLE r1 WITH ACCESS TO ALL DATACENTERS");
          Assert.assertNotNull(dcPerms);
          Assert.assertFalse(dcPerms.restrictsAccess());
      }
  
      @Test
      public void singleDc()
      {
          DCPermissions dcPerms = dcPerms("ALTER ROLE r1 WITH ACCESS TO DATACENTERS {'dc1'}");
          Assert.assertNotNull(dcPerms);
          Assert.assertTrue(dcPerms.restrictsAccess());
          Assert.assertEquals(Sets.newHashSet("dc1"), dcPerms.allowedDCs());
      }
  
      @Test
      public void multiDcs()
      {
          DCPermissions dcPerms = dcPerms("ALTER ROLE r1 WITH ACCESS TO DATACENTERS {'dc1', 'dc2'}");
          Assert.assertNotNull(dcPerms);
          Assert.assertTrue(dcPerms.restrictsAccess());
          Assert.assertEquals(Sets.newHashSet("dc1", "dc2"), dcPerms.allowedDCs());
      }
  
      @Test
      public void cidrsNotSpecified()
      {
          Assert.assertNull(cidrPerms("ALTER ROLE r1 WITH PASSWORD = 'password'"));
      }
  
      @Test
      public void cidrsAllSpecified()
      {
          CIDRPermissions cidrPerms = cidrPerms("ALTER ROLE r1 WITH ACCESS FROM ALL CIDRS");
          Assert.assertNotNull(cidrPerms);
          Assert.assertFalse(cidrPerms.restrictsAccess());
      }
  
      @Test
      public void singleCidr()
      {
          CIDRPermissions cidrPerms = cidrPerms("ALTER ROLE r1 WITH ACCESS FROM CIDRS {'region1'}");
          Assert.assertNotNull(cidrPerms);
          Assert.assertTrue(cidrPerms.restrictsAccess());
          Assert.assertEquals(Sets.newHashSet("region1"), cidrPerms.allowedCIDRGroups());
      }
  
      @Test
      public void multiCidrs()
      {
          CIDRPermissions cidrPerms = cidrPerms("ALTER ROLE r1 WITH ACCESS FROM CIDRS {'region1', 'region2'}");
          Assert.assertNotNull(cidrPerms);
          Assert.assertTrue(cidrPerms.restrictsAccess());
          Assert.assertEquals(Sets.newHashSet("region1", "region2"), cidrPerms.allowedCIDRGroups());
      }
  }
  