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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
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   * See the License for the specific language governing permissions and
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  package org.apache.cassandra.schema;
  
  import java.io.IOException;
  import java.util.Collection;
  
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.db.Mutation;
  import org.apache.cassandra.io.util.DataInputBuffer;
  import org.apache.cassandra.io.util.DataOutputBuffer;
  import org.apache.cassandra.net.MessagingService;
  import org.assertj.core.api.Assertions;
  
  public class SchemaMutationsSerializerTest extends CQLTester
  {
      @BeforeClass
      public static void beforeClass()
      {
          DatabaseDescriptor.daemonInitialization();
      }
  
      @Test
      public void testSerDe() throws IOException
      {
          createTable("CREATE TABLE %s (id INT PRIMARY KEY, v INT)");
          Collection<Mutation> mutations = SchemaKeyspace.convertSchemaToMutations();
          DataOutputBuffer out = new DataOutputBuffer();
          SchemaMutationsSerializer.instance.serialize(mutations, out, MessagingService.current_version);
          DataInputBuffer in = new DataInputBuffer(out.toByteArray());
          Collection<Mutation> deserializedMutations = SchemaMutationsSerializer.instance.deserialize(in, MessagingService.current_version);
          DataOutputBuffer out2 = new DataOutputBuffer();
          SchemaMutationsSerializer.instance.serialize(deserializedMutations, out2, MessagingService.current_version);
          Assertions.assertThat(out2.toByteArray()).isEqualTo(out.toByteArray());
      }
  }