Added example for phax/ph-ubl#66

ph-xml/src/test/java/com/helger/xml/xpath/FuncTestXPath.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2014-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.helger.xml.xpath;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+
+import org.junit.Test;
+import org.w3c.dom.Document;
+import org.w3c.dom.NodeList;
+
+import com.helger.xml.namespace.MapBasedNamespaceContext;
+import com.helger.xml.serialize.read.DOMReader;
+
+public class FuncTestXPath
+{
+  @Test
+  public void testBasicUBL () throws XPathExpressionException
+  {
+    final String sUBL = "<Invoice xmlns='bla' xmlns:ds=\"http://www.w3.org/2000/09/xmldsig#\">" +
+                        "<ds:SignedInfo>\n" +
+                        "<ds:CanonicalizationMethod Algorithm=\"http://www.w3.org/2001/10/xml-exc-c14n#\"/>\n" +
+                        "<ds:SignatureMethod Algorithm=\"http://www.w3.org/2001/04/xmldsig-more#rsa-sha256\"/>\n" +
+                        "<ds:Reference Id=\"id-doc-signed-data\" URI=\"\">\n" +
+                        "<ds:Transforms>\n" +
+                        "<ds:Transform Algorithm=\"http://www.w3.org/TR/1999/REC-xpath-19991116\">\n" +
+                        "<ds:XPath>not(//ancestor-or-self::ext:UBLExtensions)</ds:XPath>\n" +
+                        "</ds:Transform>\n" +
+                        "<ds:Transform Algorithm=\"http://www.w3.org/TR/1999/REC-xpath-19991116\">\n" +
+                        "<ds:XPath>not(//ancestor-or-self::cac:Signature)</ds:XPath>\n" +
+                        "</ds:Transform>\n" +
+                        "<ds:Transform Algorithm=\"http://www.w3.org/2001/10/xml-exc-c14n#\"/>\n" +
+                        "</ds:Transforms>\n" +
+                        "<ds:DigestMethod Algorithm=\"http://www.w3.org/2001/04/xmlenc#sha256\"/>\n" +
+                        "<ds:DigestValue>9Ajw/lNpwRWfqdrLeKFePPZJnBXoT9eKzThl1NRflzY=</ds:DigestValue>\n" +
+                        "</ds:Reference>\n" +
+                        "<ds:Reference Type=\"http://www.w3.org/2000/09/xmldsig#SignatureProperties\" URI=\"#id-xades-signed-props\">\n" +
+                        "<ds:DigestMethod Algorithm=\"http://www.w3.org/2001/04/xmlenc#sha256\"/>\n" +
+                        "<ds:DigestValue>dgpDYlwgaRF542ogPTVcdHAQ1q47QgDfd6m+GeCgwfE=</ds:DigestValue>\n" +
+                        "</ds:Reference>\n" +
+                        "</ds:SignedInfo>\n" +
+                        "<ds:SignatureValue>OzgXCgMuioS9zGu/X0hywz+s3vkZVwkuNlefT8Ni1LjOEJqbUw2YFy9IzqxWrnpi6k4JzeHE40cHPFuXwDFkEi4/1MPCbyOPi/EWvc1rp/8sQoaMWG5e4965xKQH7lfX+WYpqhIWRyEEb4X5teVn/jI7u2AuwWlQSuQRHismaF2YJqtwey1VyxJE805wuWWB/3itlzlMSVbO7B9tLpPIL0f6WqENXFEa8yD4kisY9qb6wehIK9fDg3pfaY4g4xzF/ba8H+6h22QNNok3RfXyuWvna8XuhrGR6gOh/5s6FdPxcb1A9aAaB3OUuk+chNxdptdLyC9EZ6AnoJE8jy5ruA==</ds:SignatureValue>\n" +
+                        "</Invoice>";
+    final Document doc = DOMReader.readXMLDOM (sUBL);
+    assertNotNull (doc);
+
+    final XPathFactory xpFactory = XPathFactory.newInstance ();
+    final XPath xp = xpFactory.newXPath ();
+    final MapBasedNamespaceContext nsContext = new MapBasedNamespaceContext ();
+    nsContext.addMapping ("ds", "http://www.w3.org/2000/09/xmldsig#");
+    xp.setNamespaceContext (nsContext);
+
+    final NodeList nl = (NodeList) xp.evaluate ("//ds:Transform", doc, XPathConstants.NODESET);
+    assertNotNull (nl);
+    assertEquals (3, nl.getLength ());
+  }
+}