code: /*******************************************************************************
   * Copyright (c) 2017 Voyager Search
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Apache License, Version 2.0 which
   * accompanies this distribution and is available at
   *    http://www.apache.org/licenses/LICENSE-2.0.txt
   ******************************************************************************/
  
  package org.locationtech.spatial4j.io.jackson;
  
  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.SerializationFeature;
  import org.junit.Test;
  import org.locationtech.jts.geom.Coordinate;
  import org.locationtech.spatial4j.context.jts.JtsSpatialContext;
  import org.locationtech.spatial4j.shape.RandomizedShapeTest;
  import org.locationtech.spatial4j.shape.jts.JtsShapeFactory;
  
  import java.io.IOException;
  
  import static org.junit.Assert.assertEquals;
  
  public class SimpleJacksonTest extends RandomizedShapeTest {
  
    public SimpleJacksonTest() {
      super(JtsSpatialContext.GEO);
    }
  
    @Test
    public void testReadWriteShapeAsGeoJSON() throws IOException {
      ObjectWithGeometry obj = new ObjectWithGeometry();
      obj.name = "Hello";
      obj.shape = ctx.getShapeFactory().pointXY(11,12); // Spatial4j type
      obj.geo = null; //
  
      ObjectMapper mapper = new ObjectMapper();
      mapper.enable(SerializationFeature.INDENT_OUTPUT);
      mapper.registerModule(new ShapesAsGeoJSONModule());
  
      String json = mapper.writeValueAsString(obj);
  
      ObjectWithGeometry out = mapper.readValue(json, ObjectWithGeometry.class);
      assertEquals(obj.shape, out.shape);
    }
  
    @Test
    public void testReadWriteJtsAsWKT() throws IOException {
      final JtsShapeFactory shapeFactory = ((JtsSpatialContext) ctx).getShapeFactory();
  
      ObjectWithGeometry obj = new ObjectWithGeometry();
      obj.name = "Hello";
      obj.shape = null;
      obj.geo = shapeFactory.getGeometryFactory().createPoint(new Coordinate(11, 12)); // JTS type
  
      ObjectMapper objectMapper = new ObjectMapper();
      objectMapper.registerModule(new ShapesAsWKTModule());
      objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
  
      String json = objectMapper.writeValueAsString(obj);
  
      assertEquals("{\"name\":\"Hello\",\"geo\":\"POINT (11 12)\"}", json);
  
      ObjectWithGeometry deserialized = objectMapper.readValue(json, ObjectWithGeometry.class);
      assertEquals(obj.geo, deserialized.geo);
    }
  }
  