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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.
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  package org.apache.cassandra.distributed.test;
  
  import java.io.IOException;
  import java.util.concurrent.Callable;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.junit.Test;
  
  import net.bytebuddy.ByteBuddy;
  import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
  import net.bytebuddy.implementation.MethodDelegation;
  import net.bytebuddy.implementation.bind.annotation.SuperCall;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.schema.IndexMetadata;
  import org.apache.cassandra.schema.KeyspaceMetadata;
  import org.apache.cassandra.schema.TableMetadata;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.fail;
  
  public class ExpandCQLTest extends TestBaseImpl
  {
      @Test
      public void testCreateTable() throws IOException
      {
          createHelper(TableMetadata.class, withKeyspace("create table %s.x (id int primary key)"));
      }
  
      @Test
      public void testCreateKeyspace() throws IOException
      {
          createHelper(KeyspaceMetadata.class, "create keyspace abc with replication = {'class': 'SimpleStrategy', 'replication_factor': 1}");
      }
  
      @Test
      public void testCreateIndex() throws IOException
      {
          createHelper(IndexMetadata.class, withKeyspace("create index abc on %s.t (x)"));
      }
  
      private void createHelper(Class<?> clazz, String query) throws IOException
      {
          try (Cluster cluster = init(Cluster.build(1)
                                             .withInstanceInitializer((cl, i) -> BBTable.install(cl, clazz))
                                             .start()))
          {
              cluster.schemaChange(withKeyspace("create table %s.t (id int primary key, x int)"));
              try
              {
                  cluster.get(1).runOnInstance(() -> BBTable.enabled.set(true));
                  cluster.schemaChange(withKeyspace(query));
                  fail("expected exception");
              }
              catch (Exception e)
              {
                  assertEquals("SyntaxException", e.getClass().getSimpleName());
              }
              cluster.get(1).runOnInstance(() -> BBTable.enabled.set(false));
              cluster.schemaChange(withKeyspace(query));
          }
      }
  
      public static class BBTable
      {
          static AtomicBoolean enabled = new AtomicBoolean();
          static void install(ClassLoader cl, Class<?> c)
          {
              new ByteBuddy().rebase(c)
                             .method(named("toCqlString"))
                             .intercept(MethodDelegation.to(BBTable.class))
                             .make()
                             .load(cl, ClassLoadingStrategy.Default.INJECTION);
          }
  
          public static String toCqlString(@SuperCall Callable<String> zuper) throws Exception
          {
              if (!enabled.get())
                  return zuper.call();
              return zuper.call().toLowerCase().replace("c", "x");
          }
      }
  
  }
  