Java tutorial
/** * Copyright (C) cedarsoft GmbH. * * Licensed under the GNU General Public License version 3 (the "License") * with Classpath Exception; you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.cedarsoft.org/gpl3ce * (GPL 3 with Classpath Exception) * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 3 only, as * published by the Free Software Foundation. cedarsoft GmbH designates this * particular file as subject to the "Classpath" exception as provided * by cedarsoft GmbH in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 3 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 3 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany, * or visit www.cedarsoft.com if you need additional information or * have any questions. */ package com.cedarsoft.serialization.test.utils; import com.cedarsoft.serialization.Serializer; import com.cedarsoft.serialization.StreamSerializer; import com.cedarsoft.test.utils.JsonUtils; import com.cedarsoft.version.Version; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ContainerNode; import com.fasterxml.jackson.databind.node.ObjectNode; import com.fasterxml.jackson.databind.node.TextNode; import org.apache.commons.io.Charsets; import com.fasterxml.jackson.core.JsonEncoding; import com.fasterxml.jackson.core.JsonFactory; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonParser; import com.fasterxml.jackson.core.JsonToken; import org.fest.reflect.core.Reflection; import javax.annotation.Nonnull; import java.nio.charset.Charset; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.Map; /** * Abstract base class for JSON based serializers. * <p> * Attention: it is necessary to define at least one DataPoint: * <p> * <pre>@DataPoint<br>public static final Entry<?> ENTRY1 = create(<br> new DomainObject(),<br> "{}" );</pre> * * @param <T> the type of the serialized object */ public abstract class AbstractJsonSerializerTest2<T> extends AbstractSerializerTest2<T> { @Nonnull @Override protected abstract StreamSerializer<T> getSerializer() throws Exception; protected void verify(@Nonnull byte[] current, @Nonnull byte[] expectedJson) throws Exception { String expectedAsString = new String(expectedJson, Charsets.UTF_8); if (addTypeInformation()) { try { expectedAsString = addTypeInformation(expectedJson); } catch (Exception e) { System.err.println("WARNING. Could not add type information due to " + e.getMessage()); } } JsonUtils.assertJsonEquals(expectedAsString, new String(current, Charsets.UTF_8)); } @Nonnull public String addTypeInformation(@Nonnull byte[] expectedJson) throws Exception { Serializer<T, ?, ?> serializer = getSerializer(); return addTypeInformation(serializer, expectedJson); } @Nonnull protected static String getType(@Nonnull Serializer<?, ?, ?> serializer) { return Reflection.method("getType").withReturnType(String.class).in(serializer).invoke(); } @Nonnull public static String addTypeInformation(@Nonnull Serializer<?, ?, ?> serializer, @Nonnull byte[] expectedJson) throws Exception { return addTypeInformation(getType(serializer), serializer.getFormatVersion(), expectedJson); } protected boolean addTypeInformation() { return true; } @Nonnull public static String addTypeInformation(@Nonnull String type, @Nonnull Version version, @Nonnull byte[] xmlBytes) throws Exception { JsonNode tree = new ObjectMapper().readTree(new String(xmlBytes, Charsets.UTF_8)); Map<String, JsonNode> newProps = new LinkedHashMap<String, JsonNode>(); newProps.put("@type", new TextNode(type)); newProps.put("@version", new TextNode(version.format())); Iterator<Map.Entry<String, JsonNode>> nodeIterator = tree.fields(); while (nodeIterator.hasNext()) { Map.Entry<String, JsonNode> jsonNode = nodeIterator.next(); newProps.put(jsonNode.getKey(), jsonNode.getValue()); } ((ContainerNode) tree).removeAll(); ((ObjectNode) tree).putAll(newProps); return tree.toString(); } @Override protected void verifySerialized(@Nonnull Entry<T> entry, @Nonnull byte[] serialized) throws Exception { verify(serialized, entry.getExpected()); } @Nonnull protected static <T> Entry<? extends T> create(@Nonnull T object, @Nonnull String expected) { return new Entry<T>(object, expected.getBytes()); } }