bundles/org.eclipse.equinox.p2.tests/src/org/eclipse/equinox/p2/tests/metadata/IUPersistenceTest.java - equinox/rt.equinox.p2 - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2008 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.equinox.p2.tests.metadata;

 import java.io.*;
 import java.util.*;
 import javax.xml.parsers.ParserConfigurationException;
 import org.eclipse.equinox.internal.p2.core.helpers.OrderedProperties;
 import org.eclipse.equinox.internal.p2.metadata.InstallableUnit;
 import org.eclipse.equinox.internal.p2.metadata.repository.io.MetadataParser;
 import org.eclipse.equinox.internal.p2.metadata.repository.io.MetadataWriter;
 import org.eclipse.equinox.internal.provisional.p2.metadata.*;
 import org.eclipse.equinox.p2.tests.AbstractProvisioningTest;
 import org.eclipse.equinox.p2.tests.TestActivator;
 import org.eclipse.osgi.service.resolver.VersionRange;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.Version;
 import org.xml.sax.*;

 public class IUPersistenceTest extends AbstractProvisioningTest {

 	// Randomly chose org.eclipse.osgi.services as the IU for testing persistence
 	// but 'enhanced' it for better coverage.
 	private static String PackagesNS = "osgi.packages";

 	private static String id = "org.eclipse.osgi.services";
 	private static Version version = new Version("3.1.200.v20070605");
 	private static String filter = "(& (osgi.ws=win32) (osgi.os=win32) (osgi.arch=x86))"; // not really

 	private static String[][] properties = new String[][] {new String[] {"equinox.p2.name", "OSGi Release 4.0.1 Services"}, //
 			new String[] {"equinox.p2.description", "OSGi Service Platform Release 4.0.1 Service Interfaces and Classes"}, //
 			new String[] {"equinox.p2.provider", "Eclipse.org"}, //
 			new String[] {"equinox.p2.contact", "www.eclipse.org"}, //
 			new String[] {"equinox.p2.copyright", "Copyright (c) 2003, 2004 IBM Corporation and others. A long-winded copyright notice."}};

 	private static String[][] provides = new String[][] {new String[] {PackagesNS, "org.osgi.service.cm", "1.2.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.component", "1.0.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.device", "1.1.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.event", "1.1.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.http", "1.2.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.io", "1.0.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.log", "1.3.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.metatype", "1.1.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.provisioning", "1.1.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.upnp", "1.1.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.useradmin", "1.1.0"}, //
 			new String[] {PackagesNS, "org.osgi.service.wireadmin", "1.0.0"}}; //

 	private static String[][] requires = new String[][] {new String[] {PackagesNS, "javax.servlet", "0.0.0", "true"}, //
 			new String[] {PackagesNS, "javax.servlet.http", "0.0.0", "true"}, //
 			new String[] {PackagesNS, "org.osgi.framework", "1.2.0", "false"}}; //

 	private static String[][] instructions = new String[][] {new String[] {"manifest", "Manifest-Version: 1.0\\Bundle-Vendor: Eclipse.org\\Bundle-ContactAddress: www.eclipse.org\\...a whole bunch of other manifest content..."}, new String[] {"zipped", "true"}, //
 			new String[] {"configure", "addProgramArg(programArg:-startup);addProgramArg(programArg:@artifact);"}}; //

 	public static IInstallableUnit createPersistenceTestIU() {
 		Map propertyMap = createProperties(properties);
 		ProvidedCapability[] additionalProvides = createProvided(provides);
 		RequiredCapability[] requirements = createRequired(requires);
 		TouchpointData tpData = createTouchpointData(instructions);
 		IUpdateDescriptor update = createUpdateDescriptor();
 		boolean singleton = false;
 		IInstallableUnit iu = createIU(id, version, filter, requirements, additionalProvides, propertyMap, TOUCHPOINT_OSGI, tpData, singleton, update);
 		return iu;
 	}

 	private static IUpdateDescriptor createUpdateDescriptor() {
 		return MetadataFactory.createUpdateDescriptor(id, new VersionRange(IU_TEST_VERSION, true, IU_TEST_VERSION, true), IUpdateDescriptor.HIGH, "desc");
 	}

 	private static Map createProperties(String[][] keyValuePairs) {
 		OrderedProperties props = new OrderedProperties(keyValuePairs.length);
 		for (int i = 0; i < keyValuePairs.length; i++) {
 			String[] nextPair = keyValuePairs[i];
 			props.put(nextPair[0], nextPair[1]);
 		}
 		return props;
 	}

 	private static ProvidedCapability[] createProvided(String[][] provideTuples) {
 		ProvidedCapability[] provided = new ProvidedCapability[provideTuples.length];
 		for (int i = 0; i < provideTuples.length; i++) {
 			String[] nextTuple = provideTuples[i];
 			provided[i] = MetadataFactory.createProvidedCapability(nextTuple[0], nextTuple[1], new Version(nextTuple[2]));
 		}
 		// provided[provideTuples.length] = BUNDLE_CAPABILITY;
 		return provided;
 	}

 	private static RequiredCapability[] createRequired(String[][] requireTuples) {
 		RequiredCapability[] required = new RequiredCapability[requireTuples.length];
 		for (int i = 0; i < requireTuples.length; i++) {
 			String[] nextTuple = requireTuples[i];
 			required[i] = MetadataFactory.createRequiredCapability(nextTuple[0], nextTuple[1], new VersionRange(nextTuple[2]), null, Boolean.valueOf(nextTuple[3]).booleanValue(), false);
 		}
 		return required;
 	}

 	private static TouchpointData createTouchpointData(String[][] instructionData) {
 		Map map = new LinkedHashMap(instructionData.length);
 		for (int i = 0; i < instructionData.length; i++) {
 			String[] nextInstruction = instructionData[i];
 			map.put(nextInstruction[0], nextInstruction[1]);
 		}
 		return MetadataFactory.createTouchpointData(map);
 	}

 	private static String IU_TEST_TARGET = "installableUnitTest";
 	private static Version IU_TEST_VERSION = new Version("0.0.1");

 	private static String IU_TEST_ELEMENT = "test";

 	class IUStringWriter extends MetadataWriter {

 		public IUStringWriter(ByteArrayOutputStream stream) throws IOException {
 			super(stream, new ProcessingInstruction[] {ProcessingInstruction.makeClassVersionInstruction(IU_TEST_TARGET, InstallableUnit.class, IU_TEST_VERSION)});
 		}

 		public void writeTest(IInstallableUnit iu) {
 			start(IU_TEST_ELEMENT);
 			writeInstallableUnit(iu);
 			end(IU_TEST_ELEMENT);
 		}
 	}

 	class IUStringParser extends MetadataParser {

 		public IUStringParser(BundleContext context, String bundleId) {
 			super(context, bundleId);
 		}

 		public void parse(String profileString) throws IOException {
 			this.status = null;
 			try {
 				getParser();
 				TestHandler testHandler = new TestHandler();
 				xmlReader.setContentHandler(new IUDocHandler(IU_TEST_ELEMENT, testHandler));
 				xmlReader.parse(new InputSource(new StringReader(profileString)));
 				if (isValidXML()) {
 					theIU = testHandler.getIU();
 				}
 			} catch (SAXException e) {
 				throw new IOException(e.getMessage());
 			} catch (ParserConfigurationException e) {
 				fail();
 			}
 		}

 		private IInstallableUnit theIU = null;

 		private final class IUDocHandler extends DocHandler {

 			public IUDocHandler(String rootName, RootHandler rootHandler) {
 				super(rootName, rootHandler);
 			}

 			public void processingInstruction(String target, String data) throws SAXException {
 				if (IU_TEST_TARGET.equals(target)) {
 					String clazz = extractPIClass(data);
 					try {
 						if (!Class.forName(clazz).equals(InstallableUnit.class)) {
 							throw new SAXException("Wrong class '" + clazz + "' in processing instruction"); //$NON-NLS-1$//$NON-NLS-2$
 						}
 					} catch (ClassNotFoundException e) {
 						throw new SAXException("InstallableUnit class '" + clazz + "' not found"); //$NON-NLS-1$//$NON-NLS-2$
 					}

 					Version iuTestVersion = extractPIVersion(target, data);
 					if (!IU_TEST_VERSION.equals(iuTestVersion)) {
 						throw new SAXException("Bad iu test version.");
 					}
 				}
 			}
 		}

 		private final class TestHandler extends RootHandler {

 			private InstallableUnitHandler iuHandler = null;

 			private InstallableUnit iu = null;
 			private List singleton = new ArrayList(1);

 			public TestHandler() {
 				super();
 			}

 			public InstallableUnit getIU() {
 				return iu;
 			}

 			protected void handleRootAttributes(Attributes attributes) {
 				String[] values = parseAttributes(attributes, noAttributes, noAttributes);
 			}

 			public void startElement(String name, Attributes attributes) {
 				if (INSTALLABLE_UNIT_ELEMENT.equals(name)) {
 					if (iuHandler == null) {
 						iuHandler = new InstallableUnitHandler(this, attributes, singleton);
 					} else {
 						duplicateElement(this, name, attributes);
 					}
 				} else {
 					invalidElement(name, attributes);
 				}
 			}

 			protected void finished() {
 				if (isValidXML()) {
 					if (iuHandler != null && singleton.size() == 1) {
 						iu = (InstallableUnit) iuHandler.getInstallableUnit();
 					}
 				}
 			}
 		}

 		protected String getErrorMessage() {
 			return "Error parsing installable unit string";
 		}

 		protected Object getRootObject() {
 			return theIU;
 		}

 	}

 	public void testIUPersistence() throws IOException {
 		IInstallableUnit iu0 = createPersistenceTestIU();
 		validateIU(iu0);
 		ByteArrayOutputStream output0 = new ByteArrayOutputStream(3072);
 		IUStringWriter writer0 = new IUStringWriter(output0);
 		writer0.writeTest(iu0);
 		String iuText0 = output0.toString();
 		output0.close();

 		IUStringParser parser = new IUStringParser(TestActivator.context, TestActivator.PI_PROV_TESTS);
 		parser.parse(iuText0);
 		assertTrue("Error parsing test iu: " + parser.getStatus().getMessage(), parser.getStatus().isOK());
 		InstallableUnit iu1 = (InstallableUnit) parser.getRootObject();
 		validateIU(iu1);
 		ByteArrayOutputStream output1 = new ByteArrayOutputStream(1492);
 		IUStringWriter writer = new IUStringWriter(output1);
 		writer.writeTest(iu1);
 		String iuText1 = output1.toString();
 		output1.close();
 		assertTrue("Installable unit write after read after write produced different XML", iuText1.equals(iuText0));
 	}

 	private static void validateIU(IInstallableUnit iu) {
 		assertTrue("Installable unit id is not correct", id.equals(iu.getId()));
 		assertTrue("Installable unit version is not correct", version.equals(iu.getVersion()));
 		assertTrue("Installable unit filter is not correct", filter.equals(iu.getFilter()));
 		// assertTrue("Installable unit properties are not correct", Arrays.equals(properties, extractProperties(iu)));
 		assertTrue("Installable unit properties are not correct", equal(properties, extractProperties(iu)));
 		assertTrue("Installable unit provided capabilities are not correct", equal(addSelfCapability(iu, provides), extractProvides(iu)));
 		assertTrue("Installable unit required capabilities are not correct", equal(requires, extractRequires(iu)));
 		assertTrue("Installable unit update descriptor are not correct", id.equals(iu.getUpdateDescriptor().getId()));
 		assertTrue("Installable unit update descriptor are not correct", IUpdateDescriptor.HIGH == iu.getUpdateDescriptor().getSeverity());
 		assertTrue("Installable unit update descriptor are not correct", "desc".equals(iu.getUpdateDescriptor().getDescription()));
 		assertTrue("Installable unit update descriptor are not correct", new VersionRange(IU_TEST_VERSION, true, IU_TEST_VERSION, true).equals(iu.getUpdateDescriptor().getRange()));
 	}

 	private static String[][] extractProperties(IInstallableUnit iu) {
 		Map props = iu.getProperties();
 		Set keys = props.keySet();
 		String[][] pairs = new String[keys.size()][2];
 		int index = 0;
 		for (Iterator iter = keys.iterator(); iter.hasNext();) {
 			String nextKey = (String) iter.next();
 			String nextValue = (String) props.get(nextKey);
 			pairs[index] = new String[] {nextKey, nextValue};
 			index++;
 		}
 		return pairs;
 	}

 	private static String[][] addSelfCapability(IInstallableUnit iu, String[][] provideTuples) {
 		String[][] augmentedProvides = new String[provideTuples.length + 1][3];
 		ProvidedCapability self = getSelfCapability(iu);
 		augmentedProvides[0] = new String[] {self.getNamespace(), self.getName(), self.getVersion().toString()};
 		for (int i = 0; i < provideTuples.length; i++) {
 			augmentedProvides[i + 1] = provideTuples[i];
 		}
 		return augmentedProvides;
 	}

 	private static String[][] extractProvides(IInstallableUnit iu) {
 		ProvidedCapability[] provydes = iu.getProvidedCapabilities();
 		String[][] tuples = new String[provydes.length][3];
 		for (int i = 0; i < provydes.length; i++) {
 			ProvidedCapability next = provydes[i];
 			tuples[i] = new String[] {next.getNamespace(), next.getName(), next.getVersion().toString()};
 		}
 		return tuples;
 	}

 	private static String[][] extractRequires(IInstallableUnit iu) {
 		RequiredCapability[] requyres = iu.getRequiredCapabilities();
 		String[][] tuples = new String[requyres.length][4];
 		for (int i = 0; i < requyres.length; i++) {
 			RequiredCapability next = requyres[i];
 			tuples[i] = new String[] {next.getNamespace(), next.getName(), next.getRange().toString(), Boolean.valueOf(next.isOptional()).toString()};
 		}
 		return tuples;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2007, 2008 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.equinox.p2.tests.metadata;

	import java.io.*;
	import java.util.*;
	import javax.xml.parsers.ParserConfigurationException;
	import org.eclipse.equinox.internal.p2.core.helpers.OrderedProperties;
	import org.eclipse.equinox.internal.p2.metadata.InstallableUnit;
	import org.eclipse.equinox.internal.p2.metadata.repository.io.MetadataParser;
	import org.eclipse.equinox.internal.p2.metadata.repository.io.MetadataWriter;
	import org.eclipse.equinox.internal.provisional.p2.metadata.*;
	import org.eclipse.equinox.p2.tests.AbstractProvisioningTest;
	import org.eclipse.equinox.p2.tests.TestActivator;
	import org.eclipse.osgi.service.resolver.VersionRange;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.Version;
	import org.xml.sax.*;

	public class IUPersistenceTest extends AbstractProvisioningTest {

	// Randomly chose org.eclipse.osgi.services as the IU for testing persistence
	// but 'enhanced' it for better coverage.
	private static String PackagesNS = "osgi.packages";

	private static String id = "org.eclipse.osgi.services";
	private static Version version = new Version("3.1.200.v20070605");
	private static String filter = "(& (osgi.ws=win32) (osgi.os=win32) (osgi.arch=x86))"; // not really

	private static String[][] properties = new String[][] {new String[] {"equinox.p2.name", "OSGi Release 4.0.1 Services"}, //
	new String[] {"equinox.p2.description", "OSGi Service Platform Release 4.0.1 Service Interfaces and Classes"}, //
	new String[] {"equinox.p2.provider", "Eclipse.org"}, //
	new String[] {"equinox.p2.contact", "www.eclipse.org"}, //
	new String[] {"equinox.p2.copyright", "Copyright (c) 2003, 2004 IBM Corporation and others. A long-winded copyright notice."}};

	private static String[][] provides = new String[][] {new String[] {PackagesNS, "org.osgi.service.cm", "1.2.0"}, //
	new String[] {PackagesNS, "org.osgi.service.component", "1.0.0"}, //
	new String[] {PackagesNS, "org.osgi.service.device", "1.1.0"}, //
	new String[] {PackagesNS, "org.osgi.service.event", "1.1.0"}, //
	new String[] {PackagesNS, "org.osgi.service.http", "1.2.0"}, //
	new String[] {PackagesNS, "org.osgi.service.io", "1.0.0"}, //
	new String[] {PackagesNS, "org.osgi.service.log", "1.3.0"}, //
	new String[] {PackagesNS, "org.osgi.service.metatype", "1.1.0"}, //
	new String[] {PackagesNS, "org.osgi.service.provisioning", "1.1.0"}, //
	new String[] {PackagesNS, "org.osgi.service.upnp", "1.1.0"}, //
	new String[] {PackagesNS, "org.osgi.service.useradmin", "1.1.0"}, //
	new String[] {PackagesNS, "org.osgi.service.wireadmin", "1.0.0"}}; //

	private static String[][] requires = new String[][] {new String[] {PackagesNS, "javax.servlet", "0.0.0", "true"}, //
	new String[] {PackagesNS, "javax.servlet.http", "0.0.0", "true"}, //
	new String[] {PackagesNS, "org.osgi.framework", "1.2.0", "false"}}; //

	private static String[][] instructions = new String[][] {new String[] {"manifest", "Manifest-Version: 1.0\\Bundle-Vendor: Eclipse.org\\Bundle-ContactAddress: www.eclipse.org\\...a whole bunch of other manifest content..."}, new String[] {"zipped", "true"}, //
	new String[] {"configure", "addProgramArg(programArg:-startup);addProgramArg(programArg:@artifact);"}}; //

	public static IInstallableUnit createPersistenceTestIU() {
	Map propertyMap = createProperties(properties);
	ProvidedCapability[] additionalProvides = createProvided(provides);
	RequiredCapability[] requirements = createRequired(requires);
	TouchpointData tpData = createTouchpointData(instructions);
	IUpdateDescriptor update = createUpdateDescriptor();
	boolean singleton = false;
	IInstallableUnit iu = createIU(id, version, filter, requirements, additionalProvides, propertyMap, TOUCHPOINT_OSGI, tpData, singleton, update);
	return iu;
	}

	private static IUpdateDescriptor createUpdateDescriptor() {
	return MetadataFactory.createUpdateDescriptor(id, new VersionRange(IU_TEST_VERSION, true, IU_TEST_VERSION, true), IUpdateDescriptor.HIGH, "desc");
	}

	private static Map createProperties(String[][] keyValuePairs) {
	OrderedProperties props = new OrderedProperties(keyValuePairs.length);
	for (int i = 0; i < keyValuePairs.length; i++) {
	String[] nextPair = keyValuePairs[i];
	props.put(nextPair[0], nextPair[1]);
	}
	return props;
	}

	private static ProvidedCapability[] createProvided(String[][] provideTuples) {
	ProvidedCapability[] provided = new ProvidedCapability[provideTuples.length];
	for (int i = 0; i < provideTuples.length; i++) {
	String[] nextTuple = provideTuples[i];
	provided[i] = MetadataFactory.createProvidedCapability(nextTuple[0], nextTuple[1], new Version(nextTuple[2]));
	}
	// provided[provideTuples.length] = BUNDLE_CAPABILITY;
	return provided;
	}

	private static RequiredCapability[] createRequired(String[][] requireTuples) {
	RequiredCapability[] required = new RequiredCapability[requireTuples.length];
	for (int i = 0; i < requireTuples.length; i++) {
	String[] nextTuple = requireTuples[i];
	required[i] = MetadataFactory.createRequiredCapability(nextTuple[0], nextTuple[1], new VersionRange(nextTuple[2]), null, Boolean.valueOf(nextTuple[3]).booleanValue(), false);
	}
	return required;
	}

	private static TouchpointData createTouchpointData(String[][] instructionData) {
	Map map = new LinkedHashMap(instructionData.length);
	for (int i = 0; i < instructionData.length; i++) {
	String[] nextInstruction = instructionData[i];
	map.put(nextInstruction[0], nextInstruction[1]);
	}
	return MetadataFactory.createTouchpointData(map);
	}

	private static String IU_TEST_TARGET = "installableUnitTest";
	private static Version IU_TEST_VERSION = new Version("0.0.1");

	private static String IU_TEST_ELEMENT = "test";

	class IUStringWriter extends MetadataWriter {

	public IUStringWriter(ByteArrayOutputStream stream) throws IOException {
	super(stream, new ProcessingInstruction[] {ProcessingInstruction.makeClassVersionInstruction(IU_TEST_TARGET, InstallableUnit.class, IU_TEST_VERSION)});
	}

	public void writeTest(IInstallableUnit iu) {
	start(IU_TEST_ELEMENT);
	writeInstallableUnit(iu);
	end(IU_TEST_ELEMENT);
	}
	}

	class IUStringParser extends MetadataParser {

	public IUStringParser(BundleContext context, String bundleId) {
	super(context, bundleId);
	}

	public void parse(String profileString) throws IOException {
	this.status = null;
	try {
	getParser();
	TestHandler testHandler = new TestHandler();
	xmlReader.setContentHandler(new IUDocHandler(IU_TEST_ELEMENT, testHandler));
	xmlReader.parse(new InputSource(new StringReader(profileString)));
	if (isValidXML()) {
	theIU = testHandler.getIU();
	}
	} catch (SAXException e) {
	throw new IOException(e.getMessage());
	} catch (ParserConfigurationException e) {
	fail();
	}
	}

	private IInstallableUnit theIU = null;

	private final class IUDocHandler extends DocHandler {

	public IUDocHandler(String rootName, RootHandler rootHandler) {
	super(rootName, rootHandler);
	}

	public void processingInstruction(String target, String data) throws SAXException {
	if (IU_TEST_TARGET.equals(target)) {
	String clazz = extractPIClass(data);
	try {
	if (!Class.forName(clazz).equals(InstallableUnit.class)) {
	throw new SAXException("Wrong class '" + clazz + "' in processing instruction"); //$NON-NLS-1$//$NON-NLS-2$
	}
	} catch (ClassNotFoundException e) {
	throw new SAXException("InstallableUnit class '" + clazz + "' not found"); //$NON-NLS-1$//$NON-NLS-2$
	}

	Version iuTestVersion = extractPIVersion(target, data);
	if (!IU_TEST_VERSION.equals(iuTestVersion)) {
	throw new SAXException("Bad iu test version.");
	}
	}
	}
	}

	private final class TestHandler extends RootHandler {

	private InstallableUnitHandler iuHandler = null;

	private InstallableUnit iu = null;
	private List singleton = new ArrayList(1);

	public TestHandler() {
	super();
	}

	public InstallableUnit getIU() {
	return iu;
	}

	protected void handleRootAttributes(Attributes attributes) {
	String[] values = parseAttributes(attributes, noAttributes, noAttributes);
	}

	public void startElement(String name, Attributes attributes) {
	if (INSTALLABLE_UNIT_ELEMENT.equals(name)) {
	if (iuHandler == null) {
	iuHandler = new InstallableUnitHandler(this, attributes, singleton);
	} else {
	duplicateElement(this, name, attributes);
	}
	} else {
	invalidElement(name, attributes);
	}
	}

	protected void finished() {
	if (isValidXML()) {
	if (iuHandler != null && singleton.size() == 1) {
	iu = (InstallableUnit) iuHandler.getInstallableUnit();
	}
	}
	}
	}

	protected String getErrorMessage() {
	return "Error parsing installable unit string";
	}

	protected Object getRootObject() {
	return theIU;
	}

	}

	public void testIUPersistence() throws IOException {
	IInstallableUnit iu0 = createPersistenceTestIU();
	validateIU(iu0);
	ByteArrayOutputStream output0 = new ByteArrayOutputStream(3072);
	IUStringWriter writer0 = new IUStringWriter(output0);
	writer0.writeTest(iu0);
	String iuText0 = output0.toString();
	output0.close();

	IUStringParser parser = new IUStringParser(TestActivator.context, TestActivator.PI_PROV_TESTS);
	parser.parse(iuText0);
	assertTrue("Error parsing test iu: " + parser.getStatus().getMessage(), parser.getStatus().isOK());
	InstallableUnit iu1 = (InstallableUnit) parser.getRootObject();
	validateIU(iu1);
	ByteArrayOutputStream output1 = new ByteArrayOutputStream(1492);
	IUStringWriter writer = new IUStringWriter(output1);
	writer.writeTest(iu1);
	String iuText1 = output1.toString();
	output1.close();
	assertTrue("Installable unit write after read after write produced different XML", iuText1.equals(iuText0));
	}

	private static void validateIU(IInstallableUnit iu) {
	assertTrue("Installable unit id is not correct", id.equals(iu.getId()));
	assertTrue("Installable unit version is not correct", version.equals(iu.getVersion()));
	assertTrue("Installable unit filter is not correct", filter.equals(iu.getFilter()));
	// assertTrue("Installable unit properties are not correct", Arrays.equals(properties, extractProperties(iu)));
	assertTrue("Installable unit properties are not correct", equal(properties, extractProperties(iu)));
	assertTrue("Installable unit provided capabilities are not correct", equal(addSelfCapability(iu, provides), extractProvides(iu)));
	assertTrue("Installable unit required capabilities are not correct", equal(requires, extractRequires(iu)));
	assertTrue("Installable unit update descriptor are not correct", id.equals(iu.getUpdateDescriptor().getId()));
	assertTrue("Installable unit update descriptor are not correct", IUpdateDescriptor.HIGH == iu.getUpdateDescriptor().getSeverity());
	assertTrue("Installable unit update descriptor are not correct", "desc".equals(iu.getUpdateDescriptor().getDescription()));
	assertTrue("Installable unit update descriptor are not correct", new VersionRange(IU_TEST_VERSION, true, IU_TEST_VERSION, true).equals(iu.getUpdateDescriptor().getRange()));
	}

	private static String[][] extractProperties(IInstallableUnit iu) {
	Map props = iu.getProperties();
	Set keys = props.keySet();
	String[][] pairs = new String[keys.size()][2];
	int index = 0;
	for (Iterator iter = keys.iterator(); iter.hasNext();) {
	String nextKey = (String) iter.next();
	String nextValue = (String) props.get(nextKey);
	pairs[index] = new String[] {nextKey, nextValue};
	index++;
	}
	return pairs;
	}

	private static String[][] addSelfCapability(IInstallableUnit iu, String[][] provideTuples) {
	String[][] augmentedProvides = new String[provideTuples.length + 1][3];
	ProvidedCapability self = getSelfCapability(iu);
	augmentedProvides[0] = new String[] {self.getNamespace(), self.getName(), self.getVersion().toString()};
	for (int i = 0; i < provideTuples.length; i++) {
	augmentedProvides[i + 1] = provideTuples[i];
	}
	return augmentedProvides;
	}

	private static String[][] extractProvides(IInstallableUnit iu) {
	ProvidedCapability[] provydes = iu.getProvidedCapabilities();
	String[][] tuples = new String[provydes.length][3];
	for (int i = 0; i < provydes.length; i++) {
	ProvidedCapability next = provydes[i];
	tuples[i] = new String[] {next.getNamespace(), next.getName(), next.getVersion().toString()};
	}
	return tuples;
	}

	private static String[][] extractRequires(IInstallableUnit iu) {
	RequiredCapability[] requyres = iu.getRequiredCapabilities();
	String[][] tuples = new String[requyres.length][4];
	for (int i = 0; i < requyres.length; i++) {
	RequiredCapability next = requyres[i];
	tuples[i] = new String[] {next.getNamespace(), next.getName(), next.getRange().toString(), Boolean.valueOf(next.isOptional()).toString()};
	}
	return tuples;
	}

	}