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Groovy example source code file (DomToGroovyTest.groovy)

This example Groovy source code file (DomToGroovyTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

document, document, dom, domtogroovy, exception, exception, expected_builder_script_3, expected_builder_script_4, file, file, io, parser, printwriter, sax, saxexception, string, string, stringwriter, xml

The Groovy DomToGroovyTest.groovy source code

package org.codehaus.groovy.tools.xml

import java.io.*
import javax.xml.parsers.DocumentBuilder
import javax.xml.parsers.DocumentBuilderFactory
import org.w3c.dom.Document
import org.xml.sax.InputSource
import org.xml.sax.SAXException

/**
 * @author James Strachan
 * @author paulk
 * @version $Revision: 4111 $
 */
public class DomToGroovyTest extends GroovyTestCase {
    private static final String LS = System.getProperty("line.separator")
    private static final String TEST_XML_1 =
        "<a href='http://groovy.codehaus.org'>Groovy"
    private static final String TEST_XML_2 =
        "<project name='testProject'>message"
    private static final String TEST_XML_3 = '''<?xml version="1.0"?>
        <!-- this example demonstrates using markup to specify a rich user interface -->
        <frame size="[300,300]" text="My Window">
          <label bounds="[10,10,290,30]" text="Save changes"/>
          <panel bounds="[10,40,290,290]">
            <button action="save()" text="OK"/>
            <button action="close()" text="Cancel"/>
          </panel>
        </frame>'''
    private static final String TEST_XML_4 = '''
        <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
          <xsd:simpleType name="SKU">
            <xsd:restriction base="xsd:string">
              <xsd:pattern value="\\d{3}-[A-Z]{2}"/>
            </xsd:restriction>
          </xsd:simpleType>
        </xsd:schema>'''
    private static final String TEST_XML_5 = '''
        <element xml:lang="en-US" > blabla 
    '''
    private static final String EXPECTED_BUILDER_SCRIPT_1 =
        "a(href:'http://groovy.codehaus.org', 'Groovy')"
    private static final String EXPECTED_BUILDER_SCRIPT_2 = '''
        project(name:'testProject') {
          target(name:'testTarget') {
            echo('message')
            echo()
          }
        }'''
    private static final String EXPECTED_BUILDER_SCRIPT_3 = '''
        /* this example demonstrates using markup to specify a rich user interface */
        frame(size:'[300,300]', text:'My Window') {
          label(bounds:'[10,10,290,30]', text:'Save changes')
          panel(bounds:'[10,40,290,290]') {
            button(action:'save()', text:'OK')
            button(action:'close()', text:'Cancel')
          }
        }'''
    private static final String EXPECTED_BUILDER_SCRIPT_4 = '''
        mkp.declareNamespace(xsd:'http://www.w3.org/2001/XMLSchema')
        'xsd.schema'() {
          'xsd.simpleType'(name:'SKU') {
            'xsd.restriction'(base:'xsd:string') {
              'xsd.pattern'(value:'\\\\d{3}-[A-Z]{2}')
            }
          }
        }'''
    private static final String EXPECTED_BUILDER_SCRIPT_5 = '''
        element('xml:lang':'en-US', 'blabla')
    '''

    protected DocumentBuilder builder
    protected DomToGroovy converter
    protected File dir = new File("target/generated-groovyxml")

    public void testConversion() throws Exception {
        convert("test1.xml", "test1.groovy")
        convert("po.xsd", "poSchema.groovy")
        convert("swing.xml", "swing.groovy")
    }

    public void testConversionFormat() throws Exception {
        checkConversion(TEST_XML_1, EXPECTED_BUILDER_SCRIPT_1)
        checkConversion(TEST_XML_2, EXPECTED_BUILDER_SCRIPT_2)
        checkConversion(TEST_XML_3, EXPECTED_BUILDER_SCRIPT_3)
        checkConversion(TEST_XML_4, EXPECTED_BUILDER_SCRIPT_4)
        checkConversion(TEST_XML_5, EXPECTED_BUILDER_SCRIPT_5)
    }

    private void checkConversion(String testXml, String expectedScript) throws SAXException, IOException {
        ByteArrayInputStream inputStream = new ByteArrayInputStream(testXml.getBytes())
        Document document = builder.parse(inputStream)
        StringWriter writer = new StringWriter()
        converter = new DomToGroovy(new PrintWriter(writer))
        converter.print(document)
        StringTestUtil.assertMultilineStringsEqual(expectedScript, writer.toString())
    }

    private void convert(String name, String output) throws Exception {
        Document document = parse(name)
        PrintWriter writer = new PrintWriter(new FileWriter(new File(dir, output)))
        converter = new DomToGroovy(writer)
        writer.println("#!/bin/groovy")
        writer.println()
        writer.println("// generated from " + name)
        writer.println()
        converter.print(document)
        writer.close()
    }

    private Document parse(String name) throws SAXException, IOException {
        URL resource = getClass().getResource(name)
        assertTrue("Could not find resource: " + name, resource != null)
        return builder.parse(new InputSource(resource.toString()))
    }

    protected void setUp() throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance()
        factory.setNamespaceAware(true)
        builder = factory.newDocumentBuilder()
        dir.mkdirs()
    }
}

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