/*
 * 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.druid.jackson;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import org.apache.druid.java.util.common.NonnullPair;
import org.junit.Assert;
import org.junit.Test;

import java.util.Map;

public class ToStringObjectPairListDeserializerTest
{
  private final ObjectMapper objectMapper;

  public ToStringObjectPairListDeserializerTest()
  {
    objectMapper = new DefaultObjectMapper();
    objectMapper.registerModule(
        new SimpleModule().addDeserializer(
            StringObjectPairList.class,
            new ToStringObjectPairListDeserializer()
        )
    );
  }

  @Test
  public void testDeserializeNestedMap() throws JsonProcessingException
  {
    final Map<String, Object> map = ImmutableMap.of(
        "rootKey",
        "rootVal",
        "innerMap",
        ImmutableMap.of(
            "innerKey",
            "innerVal"
        )
    );
    final String json = objectMapper.writeValueAsString(map);
    final StringObjectPairList pairList = objectMapper.readValue(json, StringObjectPairList.class);
    Assert.assertEquals(
        new StringObjectPairList(
            ImmutableList.of(
                new NonnullPair<>("rootKey", "rootVal"),
                new NonnullPair<>("innerMap", ImmutableMap.of("innerKey", "innerVal"))
            )
        ),
        pairList
    );
  }
}
