yang/yang-data-codec-xml/src/test/java/org/opendaylight/yangtools/yang/data/codec/xml/DOMSourceXMLStreamReaderTest.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.xml;
   9
  10 import static java.util.Objects.requireNonNull;
  11 import static org.junit.Assert.assertFalse;
  12 import static org.junit.Assert.assertNotNull;
  13
  14 import com.google.common.collect.ImmutableList;
  15 import java.io.IOException;
  16 import java.io.InputStream;
  17 import java.io.StringWriter;
  18 import java.util.Collection;
  19 import javax.xml.stream.XMLOutputFactory;
  20 import javax.xml.stream.XMLStreamReader;
  21 import javax.xml.stream.XMLStreamWriter;
  22 import javax.xml.transform.OutputKeys;
  23 import javax.xml.transform.Transformer;
  24 import javax.xml.transform.TransformerException;
  25 import javax.xml.transform.TransformerFactory;
  26 import javax.xml.transform.TransformerFactoryConfigurationError;
  27 import javax.xml.transform.dom.DOMResult;
  28 import javax.xml.transform.dom.DOMSource;
  29 import javax.xml.transform.stream.StreamResult;
  30 import org.junit.AfterClass;
  31 import org.junit.BeforeClass;
  32 import org.junit.Test;
  33 import org.junit.runner.RunWith;
  34 import org.junit.runners.Parameterized;
  35 import org.opendaylight.yangtools.util.xml.UntrustedXML;
  36 import org.opendaylight.yangtools.yang.common.QName;
  37 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  38 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  39 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
  40 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
  41 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
  42 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  43 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  44 import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
  45 import org.opendaylight.yangtools.yang.test.util.YangParserTestUtils;
  46 import org.w3c.dom.Document;
  47 import org.w3c.dom.Node;
  48 import org.xml.sax.SAXException;
  49
  50 @RunWith(Parameterized.class)
  51 public class DOMSourceXMLStreamReaderTest {
  52     @Parameterized.Parameters(name = "{0}")
  53     public static Collection<Object[]> data() {
  54         return TestFactories.junitParameters();
  55     }
  56
  57     private static EffectiveModelContext SCHEMA_CONTEXT;
  58
  59     private final XMLOutputFactory factory;
  60
  61     public DOMSourceXMLStreamReaderTest(final String factoryMode, final XMLOutputFactory factory) {
  62         this.factory = factory;
  63     }
  64
  65     @BeforeClass
  66     public static void beforeClass() {
  67         SCHEMA_CONTEXT = YangParserTestUtils.parseYangResourceDirectory("/dom-reader-test");
  68     }
  69
  70     @AfterClass
  71     public static void afterClass() {
  72         SCHEMA_CONTEXT = null;
  73     }
  74
  75     @Test
  76     public void test() throws Exception {
  77         final ContainerSchemaNode outerContainerSchema = (ContainerSchemaNode) SchemaContextUtil
  78                 .findNodeInSchemaContext(SCHEMA_CONTEXT, ImmutableList.of(QName.create("foo-ns", "top-cont")));
  79         assertNotNull(outerContainerSchema);
  80
  81         // deserialization
  82         final Document doc = loadDocument("/dom-reader-test/foo.xml");
  83         final DOMSource inputXml = new DOMSource(doc.getDocumentElement());
  84         XMLStreamReader domXMLReader = new DOMSourceXMLStreamReader(inputXml);
  85
  86         final NormalizedNodeResult result = new NormalizedNodeResult();
  87         final NormalizedNodeStreamWriter streamWriter = ImmutableNormalizedNodeStreamWriter.from(result);
  88         final XmlParserStream xmlParser = XmlParserStream.create(streamWriter, SCHEMA_CONTEXT, outerContainerSchema);
  89         xmlParser.parse(domXMLReader);
  90         final NormalizedNode<?, ?> transformedInput = result.getResult();
  91         assertNotNull(transformedInput);
  92
  93         // serialization
  94         //final StringWriter writer = new StringWriter();
  95         final DOMResult domResult = new DOMResult(UntrustedXML.newDocumentBuilder().newDocument());
  96         final XMLStreamWriter xmlStreamWriter = factory.createXMLStreamWriter(domResult);
  97
  98         final NormalizedNodeStreamWriter xmlNormalizedNodeStreamWriter = XMLStreamNormalizedNodeStreamWriter.create(
  99                 xmlStreamWriter, SCHEMA_CONTEXT);
 100
 101         final NormalizedNodeWriter normalizedNodeWriter = NormalizedNodeWriter.forStreamWriter(
 102                 xmlNormalizedNodeStreamWriter);
 103         normalizedNodeWriter.write(transformedInput);
 104
 105         //final String serializedXml = writer.toString();
 106         final String serializedXml = toString(domResult.getNode());
 107         assertFalse(serializedXml.isEmpty());
 108     }
 109
 110     private static Document loadDocument(final String xmlPath) throws IOException, SAXException {
 111         final InputStream resourceAsStream = NormalizedNodesToXmlTest.class.getResourceAsStream(xmlPath);
 112         return requireNonNull(readXmlToDocument(resourceAsStream));
 113     }
 114
 115     private static Document readXmlToDocument(final InputStream xmlContent) throws IOException, SAXException {
 116         final Document doc = UntrustedXML.newDocumentBuilder().parse(xmlContent);
 117         doc.getDocumentElement().normalize();
 118         return doc;
 119     }
 120
 121     private static String toString(final Node xml) {
 122         try {
 123             final Transformer transformer = TransformerFactory.newInstance().newTransformer();
 124             transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 125             transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
 126
 127             final StreamResult result = new StreamResult(new StringWriter());
 128             final DOMSource source = new DOMSource(xml);
 129             transformer.transform(source, result);
 130
 131             return result.getWriter().toString();
 132         } catch (IllegalArgumentException | TransformerFactoryConfigurationError | TransformerException e) {
 133             throw new RuntimeException("Unable to serialize xml element " + xml, e);
 134         }
 135     }
 136 }