Java tutorial
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THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * */ package org.chiba.xml.xforms.xpath.test; import junit.framework.TestCase; import org.apache.commons.jxpath.JXPathContext; import org.apache.commons.jxpath.Pointer; import org.w3c.dom.Document; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; /** * Tests for JXPath handling * * @author Ulrich Nicolas Lissé * @author Joern Turner */ public class JXPathTest extends TestCase { private JXPathContext context; /** * Tests some variations of obtaining the last node within a nodeset. * * @throws Exception if any error occurred during the test. */ public void testLast() throws Exception { Pointer pointer1 = this.context.getPointer("//my:order/my:item[2]"); assertEquals("/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]", pointer1.asPath()); Pointer pointer2 = this.context.getPointer("//my:order/my:item[position()=count(../*)]"); assertEquals("/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]", pointer2.asPath()); Pointer pointer3 = this.context.getPointer("//my:order/my:item[position()=2]"); assertEquals("/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]", pointer3.asPath()); Pointer pointer4 = this.context.getPointer("//my:order[1]/my:item[last()]"); assertEquals("/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]", pointer4.asPath()); Pointer pointer5 = this.context.getPointer("//my:order[1]/my:item[position()=last()]"); assertEquals("/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]", pointer5.asPath()); } /** * Tests relative pathes. * * @throws Exception if any error occurred during the test. */ public void testRelativePathes() throws Exception { Pointer pointer1 = this.context.getPointer("//my:item[2]/my:discount/../my:amount"); assertEquals( "/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]/my:amount[1]", pointer1.asPath()); Pointer pointer2 = this.context.getPointer("//my:item[2]/./my:discount/../my:amount/."); assertEquals( "/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]/my:amount[1]", pointer2.asPath()); Pointer pointer3 = this.context.getPointer("//my:item[@my:money=../@my:money]/my:discount/../my:amount"); assertEquals( "/html:html[1]/html:head[1]/xf:model[1]/xf:instance[1]/data[1]/my:order[1]/my:item[2]/my:amount[1]", pointer3.asPath()); } /** * Tests calculation with a relative context. * * @throws Exception if any error occurred during the test. */ public void testRelativeCalculation() throws Exception { Pointer rootPointer = this.context.getPointer("//my:item[2]/my:discount"); JXPathContext relativeContext = this.context.getRelativeContext(rootPointer); Pointer relativePointer = relativeContext.getPointer("string(count(../../my:item))"); assertEquals("2", relativePointer.getValue()); } /** * Tests relevance with a relative context. * * @throws Exception if any error occurred during the test. */ public void testRelativeRelevance() throws Exception { Pointer rootPointer1 = this.context.getPointer("//my:item[1]/my:discount"); JXPathContext relativeContext1 = this.context.getRelativeContext(rootPointer1); Pointer relativePointer1 = relativeContext1.getPointer("boolean(../my:amount > 100)"); assertEquals(Boolean.TRUE, relativePointer1.getValue()); Pointer rootPointer2 = this.context.getPointer("//my:item[2]/my:discount"); JXPathContext relativeContext2 = this.context.getRelativeContext(rootPointer2); Pointer relativePointer2 = relativeContext2.getPointer("boolean(../my:amount > 100)"); assertEquals(Boolean.FALSE, relativePointer2.getValue()); Pointer rootPointer3 = this.context.getPointer("//my:item[2]/my:discount"); JXPathContext relativeContext3 = this.context.getRelativeContext(rootPointer3); Pointer relativePointer3 = relativeContext3.getPointer("boolean(../my:non-existing-node > 100)"); assertEquals(Boolean.FALSE, relativePointer3.getValue()); } /** * Tests element node access. * * @throws Exception if any error occurred during the test. */ public void testGetElementNode() throws Exception { Pointer pointer = this.context.getPointer("//my:order/my:item"); assertTrue(org.w3c.dom.Element.class.isAssignableFrom(pointer.getNode().getClass())); } /** * Tests attribute node access. * * @throws Exception if any error occurred during the test. */ public void testGetAttrNode() throws Exception { Pointer pointer = this.context.getPointer("//my:order/@my:money"); assertTrue(org.w3c.dom.Attr.class.isAssignableFrom(pointer.getNode().getClass())); } /** * Sets up the test. * * @throws Exception in any error occurred during setup. */ protected void setUp() throws Exception { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setNamespaceAware(true); factory.setValidating(false); DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.parse(getClass().getResourceAsStream("JXPathTest.xhtml")); this.context = JXPathContext.newContext(document); this.context.registerNamespace("html", "http://www.w3.org/2002/06/xhtml2"); this.context.registerNamespace("xf", "http://www.w3.org/2002/xforms"); this.context.registerNamespace("ev", "http://www.w3.org/2001/xml-events"); this.context.registerNamespace("", ""); this.context.registerNamespace("my", "http://tempuri.org/my"); } /** * Tears down the test. * * @throws Exception in any error occurred during setup. */ protected void tearDown() throws Exception { this.context = null; } } // end of class