wamblee.org Git - utils/blob - support/src/test/java/org/wamblee/xml/XslTransformerTest.java

   1 /*
   2  * Copyright 2005 the original author or authors.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.wamblee.xml;
  18
  19 import java.io.ByteArrayOutputStream;
  20 import java.io.File;
  21 import java.io.IOException;
  22
  23 import javax.xml.parsers.DocumentBuilder;
  24 import javax.xml.parsers.DocumentBuilderFactory;
  25 import javax.xml.transform.Result;
  26 import javax.xml.transform.Source;
  27 import javax.xml.transform.TransformerException;
  28 import javax.xml.transform.stream.StreamResult;
  29 import javax.xml.transform.stream.StreamSource;
  30
  31 import junit.framework.TestCase;
  32 import org.wamblee.io.ClassPathResource;
  33 import org.wamblee.io.FileSystemUtils;
  34 import org.wamblee.io.InputResource;
  35
  36 import org.w3c.dom.Document;
  37
  38 /**
  39  * Tests the XSL transformer.
  40  */
  41 public class XslTransformerTest extends TestCase {
  42
  43     private static final String INCLUDED_XSL_FILE = "utilities.xsl";
  44
  45         private static final String REPORT_XML = "report.xml";
  46
  47     private static final String REPORT_TO_HTML_XSLT = "reportToHtml.xsl";
  48
  49     private static final String REPORT_TO_HTML2_XSLT = "reportToHtml2.xsl";
  50
  51     private static final String REPORT_TO_HTML_INVALID_XSLT = "reportToHtml-invalid.xsl";
  52
  53     private static final String REPORT_TO_HTML_NONWELLFORMED_XSLT = "reportToHtml-nonwellformed.xsl";
  54
  55     private static final String REPORT_TO_TEXT_XSLT = "reportToText.xsl";
  56
  57     private String getResourcePath(String aResource) {
  58         return getClass().getPackage().getName().replaceAll("\\.", "/") + "/" + aResource;
  59     }
  60
  61     /**
  62      * Transforms a file while using the default resolver, where the included
  63      * file can be found. Verifies the transformation is done correctly.
  64      *
  65      */
  66     public void testTransformUsingDefaultResolver() throws Exception {
  67         XslTransformer transformer = new XslTransformer();
  68
  69         InputResource xmlResource = new ClassPathResource(getResourcePath(REPORT_XML));
  70
  71         Source xslt = new StreamSource(new ClassPathResource(getResourcePath(
  72                         REPORT_TO_HTML_XSLT)).getInputStream());
  73
  74         byte[] documentData = FileSystemUtils
  75                 .read(xmlResource.getInputStream()).getBytes();
  76         DocumentBuilder builder = DocumentBuilderFactory.newInstance()
  77                 .newDocumentBuilder();
  78         Document document = builder.parse(xmlResource.getInputStream());
  79         Source documentSource = new StreamSource(xmlResource.getInputStream());
  80
  81         Document expected = DomUtils.read(new ClassPathResource(getResourcePath(
  82                         "output-reportToHtml-report.xml")).getInputStream());
  83
  84         Document output1 = transformer.transform(documentData, xslt);
  85         XmlUtils.assertEquals("byte[] transform", expected, output1);
  86
  87         xslt = new StreamSource(new ClassPathResource(getResourcePath(
  88                         REPORT_TO_HTML_XSLT)).getInputStream());
  89         Document output2 = transformer.transform(document, xslt);
  90         XmlUtils.assertEquals("document transform", expected, output2);
  91
  92         ByteArrayOutputStream os = new ByteArrayOutputStream();
  93         Result output = new StreamResult(os);
  94
  95         xslt = new StreamSource(new ClassPathResource(getResourcePath(
  96                         REPORT_TO_HTML_XSLT)).getInputStream());
  97         transformer.transform(documentSource, output, xslt);
  98         XmlUtils.assertEquals("document source transform", expected, DomUtils
  99                 .read(os.toString()));
 100
 101         xslt = new StreamSource(new ClassPathResource(getResourcePath(
 102                         REPORT_TO_HTML_XSLT)).getInputStream());
 103         String result = transformer.textTransform(documentData, xslt);
 104         XmlUtils
 105                 .assertEquals("text transform", expected, DomUtils.read(result));
 106     }
 107
 108     /**
 109      * Transforms a file using the default resolver where the included file
 110      * cannot be found. Verifies that a TransformerException is thrown.
 111      *
 112      */
 113     public void testTransformUsingDefaultResolverFails() throws IOException {
 114         XslTransformer transformer = new XslTransformer();
 115
 116         InputResource xmlResource =
 117                         new ClassPathResource(getResourcePath(REPORT_XML));
 118         Source xslt = new StreamSource(
 119                         new ClassPathResource(getResourcePath(
 120                                         REPORT_TO_HTML2_XSLT)).getInputStream());
 121
 122         byte[] documentData = FileSystemUtils
 123                 .read(xmlResource.getInputStream()).getBytes();
 124         try {
 125             Document output1 = transformer.transform(documentData, xslt);
 126         } catch (TransformerException e) {
 127             return; // ok
 128         }
 129         fail();
 130     }
 131
 132     /**
 133      * Transforms a file using an invalid Xslt. Verifies that a
 134      * TransformerException is thrown.
 135      *
 136      */
 137     public void testTransformInvalidXslt() throws IOException {
 138         XslTransformer transformer = new XslTransformer();
 139
 140         InputResource xmlResource = new ClassPathResource(
 141                         getResourcePath(REPORT_XML));
 142         Source xslt = new StreamSource(
 143                         new ClassPathResource(getResourcePath(REPORT_TO_HTML_INVALID_XSLT)).getInputStream());
 144
 145         byte[] documentData = FileSystemUtils
 146                 .read(xmlResource.getInputStream()).getBytes();
 147         try {
 148             Document output1 = transformer.transform(documentData, xslt);
 149         } catch (TransformerException e) {
 150             return; // ok
 151         }
 152         fail();
 153     }
 154
 155     /**
 156      * Transforms a file using a non-well formed xslt. Verifies that a
 157      * TransformerException is thrown.
 158      *
 159      */
 160     public void testTransformNonWellformedXslt() throws IOException {
 161         XslTransformer transformer = new XslTransformer();
 162
 163         InputResource xmlResource = new ClassPathResource(
 164                         getResourcePath(REPORT_XML));
 165         Source xslt = new StreamSource(
 166                         new ClassPathResource(getResourcePath(
 167                                         REPORT_TO_HTML_NONWELLFORMED_XSLT)).getInputStream());
 168
 169         byte[] documentData = FileSystemUtils
 170                 .read(xmlResource.getInputStream()).getBytes();
 171         try {
 172             Document output1 = transformer.transform(documentData, xslt);
 173         } catch (TransformerException e) {
 174             return; // ok
 175         }
 176         fail();
 177     }
 178
 179     /**
 180      * Transforms a file using a class path resolver.
 181      *
 182      */
 183     public void testTransformUsingClassPathResolver() throws Exception {
 184         XslTransformer transformer = new XslTransformer(new ClasspathUriResolver());
 185
 186         InputResource xmlResource = new ClassPathResource(getResourcePath(
 187                         REPORT_XML));
 188         Source xslt = new StreamSource(new ClassPathResource(
 189                         getResourcePath(REPORT_TO_HTML2_XSLT)).getInputStream());
 190
 191         byte[] documentData = FileSystemUtils
 192                 .read(xmlResource.getInputStream()).getBytes();
 193
 194         Document output1 = transformer.transform(documentData, xslt);
 195         Document expected = DomUtils.read(new ClassPathResource(
 196                         getResourcePath("output-reportToHtml-report.xml"))
 197                 .getInputStream());
 198         XmlUtils.assertEquals("doc", expected, output1);
 199     }
 200
 201     /**
 202      * Transforms a file to text output. Verifies the file is transformed
 203      * correctly.
 204      *
 205      */
 206     public void testTransformToTextOutput() throws Exception {
 207         XslTransformer transformer = new XslTransformer(new ClasspathUriResolver());
 208
 209         InputResource xmlResource = new ClassPathResource(
 210                         getResourcePath(REPORT_XML));
 211         Source xslt = new StreamSource(
 212                         new ClassPathResource(getResourcePath(REPORT_TO_TEXT_XSLT)).getInputStream());
 213
 214         byte[] documentData = FileSystemUtils
 215                 .read(xmlResource.getInputStream()).getBytes();
 216
 217         String result = transformer.textTransform(documentData, xslt);
 218         String expected = "Hello world!";
 219         assertEquals("text transform", expected, result);
 220     }
 221
 222     /**
 223      * Tests resolving a file using {@link XslTransformer#resolve(String)} with the
 224      * default resolver where the file does not exist.
 225      *
 226      */
 227     public void testResolveWithDefaultResolverFileNotFound() {
 228         XslTransformer transformer = new XslTransformer();
 229         try {
 230             Source source = transformer.resolve("org/wamblee/xml/utilities-nonexistent.xsl");
 231         } catch (TransformerException e) {
 232             return; // ok
 233         }
 234         fail();
 235     }
 236
 237
 238     /**
 239      * Tests resolving a file using {@link XslTransformer#resolve(String)} with the
 240      * default resolver.
 241      *
 242      */
 243     public void testResolveWithClasspathResolver() throws Exception {
 244         XslTransformer transformer = new XslTransformer(new ClasspathUriResolver());
 245         Source source = transformer.resolve(getResourcePath(INCLUDED_XSL_FILE));
 246         assert(source instanceof StreamSource);
 247         StreamSource ssource = (StreamSource)source;
 248         String data = FileSystemUtils.read(ssource.getInputStream());
 249         String expected = FileSystemUtils.read(new ClassPathResource(getResourcePath(INCLUDED_XSL_FILE)).getInputStream());
 250         assertEquals(expected, data);
 251     }
 252
 253 }
 254
 255