/*
 * 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.arrow.vector.util;

import static java.util.Arrays.asList;
import static org.junit.Assert.assertEquals;

import java.io.IOException;

import org.apache.arrow.memory.RootAllocator;
import org.apache.arrow.vector.types.pojo.ArrowType;
import org.apache.arrow.vector.types.pojo.Field;
import org.apache.arrow.vector.types.pojo.FieldType;
import org.apache.arrow.vector.types.pojo.Schema;
import org.apache.arrow.vector.util.SchemaUtility;
import org.junit.Test;

public class TestSchemaUtil {

  private static Field field(String name, boolean nullable, ArrowType type, Field... children) {
    return new Field(name, new FieldType(nullable, type, null, null), asList(children));
  }

  @Test
  public void testSerializationAndDeserialization() throws IOException {
    Schema schema = new Schema(asList(
        field("a", false, new ArrowType.Null()),
        field("b", true, new ArrowType.Utf8()),
        field("c", true, new ArrowType.Binary()))
    );

    byte[] serialized = SchemaUtility.serialize(schema);
    Schema deserialized = SchemaUtility.deserialize(serialized, new RootAllocator(Long.MAX_VALUE));
    assertEquals(schema, deserialized);
  }
}
