yang/yang-data-codec-gson/src/test/java/org/opendaylight/yangtools/yang/data/codec/gson/YangModeledAnyXmlSupportTest.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.yang.data.codec.gson;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.opendaylight.yangtools.yang.data.codec.gson.TestUtils.loadModules;
  12 import static org.opendaylight.yangtools.yang.data.codec.gson.TestUtils.loadTextFile;
  13 import com.google.common.base.Preconditions;
  14 import com.google.gson.JsonElement;
  15 import com.google.gson.JsonParser;
  16 import com.google.gson.stream.JsonReader;
  17 import java.io.File;
  18 import java.io.FileReader;
  19 import java.io.IOException;
  20 import java.io.InputStream;
  21 import java.io.StringReader;
  22 import java.io.StringWriter;
  23 import java.io.Writer;
  24 import java.net.URISyntaxException;
  25 import java.util.Collections;
  26 import javax.xml.parsers.DocumentBuilder;
  27 import javax.xml.parsers.DocumentBuilderFactory;
  28 import javax.xml.parsers.ParserConfigurationException;
  29 import javax.xml.stream.XMLOutputFactory;
  30 import org.junit.BeforeClass;
  31 import org.junit.Test;
  32 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  33 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  34 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  35 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  36 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  37 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
  38 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
  39 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
  40 import org.opendaylight.yangtools.yang.data.impl.schema.transform.dom.DomUtils;
  41 import org.opendaylight.yangtools.yang.data.impl.schema.transform.dom.parser.DomToNormalizedNodeParserFactory;
  42 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  43 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  44 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
  45 import org.w3c.dom.Document;
  46 import org.xml.sax.SAXException;
  47
  48 public class YangModeledAnyXmlSupportTest {
  49
  50     private static final XMLOutputFactory XML_FACTORY;
  51     private static final DocumentBuilderFactory BUILDERFACTORY;
  52
  53     static {
  54         XML_FACTORY = XMLOutputFactory.newFactory();
  55         XML_FACTORY.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, false);
  56
  57         BUILDERFACTORY = DocumentBuilderFactory.newInstance();
  58         BUILDERFACTORY.setNamespaceAware(true);
  59         BUILDERFACTORY.setCoalescing(true);
  60         BUILDERFACTORY.setIgnoringElementContentWhitespace(true);
  61         BUILDERFACTORY.setIgnoringComments(true);
  62     }
  63
  64     private static SchemaContext schemaContext;
  65     private static Document xmlDoc;
  66     private static ContainerNode data;
  67
  68     @BeforeClass
  69     public static void init() throws IOException, URISyntaxException, ReactorException, SAXException {
  70         schemaContext = loadModules("/yang-modeled-anyxml/yang");
  71         xmlDoc = loadDocument("/yang-modeled-anyxml/xml/baz.xml");
  72         data = DomToNormalizedNodeParserFactory
  73                 .getInstance(DomUtils.defaultValueCodecProvider(), schemaContext).getContainerNodeParser()
  74                 .parse(Collections.singletonList(xmlDoc.getDocumentElement()), schemaContext);
  75     }
  76
  77     @Test
  78     public void jsonToNormalizedNodesTest() throws IOException, URISyntaxException, SAXException {
  79         final String inputJson = loadTextFile("/yang-modeled-anyxml/json/baz.json");
  80         final NormalizedNodeResult result = new NormalizedNodeResult();
  81         final NormalizedNodeStreamWriter streamWriter = ImmutableNormalizedNodeStreamWriter.from(result);
  82         final JsonParserStream jsonParser = JsonParserStream.create(streamWriter, schemaContext);
  83         jsonParser.parse(new JsonReader(new StringReader(inputJson)));
  84         final NormalizedNode<?, ?> transformedInput = result.getResult();
  85
  86         assertEquals(data.getValue().iterator().next(), transformedInput);
  87     }
  88
  89     @Test
  90     public void normalizedNodesToJsonTest() throws IOException, URISyntaxException, SAXException {
  91         final DataContainerChild<? extends PathArgument, ?> baz = data.getValue().iterator().next();
  92
  93         final Writer writer = new StringWriter();
  94         final String jsonOutput = normalizedNodeToJsonStreamTransformation(writer, baz);
  95
  96         final JsonParser parser = new JsonParser();
  97         final JsonElement serializedJson = parser.parse(jsonOutput);
  98         final JsonElement expextedJson = parser.parse(new FileReader(new File(getClass().getResource(
  99                 "/yang-modeled-anyxml/json/baz.json").toURI())));
 100
 101         assertEquals(expextedJson, serializedJson);
 102     }
 103
 104     private static String normalizedNodeToJsonStreamTransformation(final Writer writer,
 105             final NormalizedNode<?, ?> inputStructure) throws IOException {
 106
 107         final NormalizedNodeStreamWriter jsonStream = JSONNormalizedNodeStreamWriter.createExclusiveWriter(
 108                 JSONCodecFactory.create(schemaContext), SchemaPath.ROOT, null,
 109                 JsonWriterFactory.createJsonWriter(writer, 2));
 110         final NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(jsonStream);
 111         nodeWriter.write(inputStructure);
 112
 113         nodeWriter.close();
 114         return writer.toString();
 115     }
 116
 117     private static Document loadDocument(final String xmlPath) throws IOException, SAXException {
 118         final InputStream resourceAsStream = YangModeledAnyXmlSupportTest.class.getResourceAsStream(xmlPath);
 119
 120         final Document currentConfigElement = readXmlToDocument(resourceAsStream);
 121         Preconditions.checkNotNull(currentConfigElement);
 122         return currentConfigElement;
 123     }
 124
 125     private static Document readXmlToDocument(final InputStream xmlContent) throws IOException, SAXException {
 126         final DocumentBuilder dBuilder;
 127         try {
 128             dBuilder = BUILDERFACTORY.newDocumentBuilder();
 129         } catch (final ParserConfigurationException e) {
 130             throw new RuntimeException("Failed to parse XML document", e);
 131         }
 132         final Document doc = dBuilder.parse(xmlContent);
 133
 134         doc.getDocumentElement().normalize();
 135         return doc;
 136     }
 137
 138 }