JSONTest.java example

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emf.texo-master
/**
 * <copyright>
 *
 * Copyright (c) 2009, 2010 Springsite BV (The Netherlands) and others
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Martin Taal - Initial API and implementation
 *
 * </copyright>
 *
 * $Id: XMLTest.java,v 1.16 2011/08/25 12:42:34 mtaal Exp $
 */

package org.eclipse.emf.texo.json.test;

import java.util.List;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.texo.component.ComponentProvider;
import org.eclipse.emf.texo.converter.EMFModelConverter;
import org.eclipse.emf.texo.json.JSONModelConverter;
import org.eclipse.emf.texo.json.ModelJSONConverter;
import org.eclipse.emf.texo.model.ModelObject;
import org.eclipse.emf.texo.store.MemoryObjectStore;
import org.eclipse.emf.texo.test.TestUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import org.junit.Assert;

/**
 * Test the conversion to and from JSON. For each test the following steps are done:
 * <ol>
 * <li>Generate test data set</li>
 * <li>Convert the test data set to json (json1)</li>
 * <li>Convert the json back to a {@link ModelObject} instance</li>
 * <li>Convert this list back to json (json22)</li>
 * <li>then the following should be true: json1.equals(json2)</li>
 * </ol>
 * 
 * @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
 * @version $Revision: 1.16 $
 */
public class JSONTest extends BaseJSONTest {

  public JSONTest() {
    super("CopyCompareTest");
  }

  public JSONTest(String name) {
    super(name);
  }

  public void doRunTest() throws Exception {
    final MemoryObjectStore memObjectStore = ComponentProvider.getInstance().newInstance(MemoryObjectStore.class);

    final List<EObject> eObjects = TestUtils.generateTestSet(1, 3, 3, 1000, getEPackages(), getEClasses());
    final EMFModelConverter emfModelConverter = new EMFModelConverter();
    emfModelConverter.setUriResolver(memObjectStore);
    final List<Object> objects = emfModelConverter.convert(eObjects);
    memObjectStore.addData(emfModelConverter.getAllConvertedObjects());

    for (Object m1 : objects) {

      ModelJSONConverter toJsonConverter = getToJsonConverter(memObjectStore);
      final Object json1 = toJsonConverter.convert(m1);
      
      final Object m2;
      if (json1 instanceof JSONArray) {
        m2 = getFromJsonConverter(memObjectStore).convert((JSONArray) json1);
      } else {
        m2 = getFromJsonConverter(memObjectStore).convert((JSONObject) json1);
      }

      toJsonConverter = getToJsonConverter(memObjectStore);
      final Object json2 = toJsonConverter.convert(m2);

      System.err.println(json1);
      System.err.println("---------------------------------------------");
      System.err.println(json2);

      Assert.assertEquals(json1.toString(), json2.toString());

      final Object m3 = getFromJsonConverter(memObjectStore).convert((JSONObject) json2);

      toJsonConverter = getToJsonConverter(memObjectStore);
      final Object json3 = toJsonConverter.convert(m3);

      Assert.assertEquals(json2.toString(), json3.toString());
    }
  }

  private JSONModelConverter getFromJsonConverter(MemoryObjectStore store) {
    final JSONModelConverter fromJsonConverter = ComponentProvider.getInstance().newInstance(JSONModelConverter.class);
    fromJsonConverter.setObjectResolver(store);
    return fromJsonConverter;
  }

  private ModelJSONConverter getToJsonConverter(MemoryObjectStore store) {
    final ModelJSONConverter toJsonConverter = ComponentProvider.getInstance().newInstance(ModelJSONConverter.class);
    toJsonConverter.setObjectResolver(store);
    toJsonConverter.setConvertNonContainedReferencedObjects(false);
    toJsonConverter.setMaxChildLevelsToConvert(1);
    toJsonConverter.setPreSortManyValues(true);
    toJsonConverter.setSerializeTitleProperty(false);
    toJsonConverter.setSkipVolatileEFeatures(true);
    return toJsonConverter;
  }
}