bundles/org.eclipse.equinox.region.tests/src/org/eclipse/equinox/region/internal/tests/hook/RegionBundleEventHookTests.java - equinox/rt.equinox.bundles - Git at Google

 /*******************************************************************************
  * Copyright (c) 2011, 2015 VMware Inc. 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:
  *    SpringSource, a division of VMware - initial API and implementation and/or initial documentation
  *******************************************************************************/

 package org.eclipse.equinox.region.internal.tests.hook;

 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;

 import java.util.*;
 import org.eclipse.equinox.region.*;
 import org.eclipse.equinox.region.internal.tests.RegionReflectionUtils;
 import org.eclipse.virgo.teststubs.osgi.framework.StubBundle;
 import org.eclipse.virgo.teststubs.osgi.framework.StubBundleContext;
 import org.junit.*;
 import org.osgi.framework.*;
 import org.osgi.framework.hooks.bundle.EventHook;

 public class RegionBundleEventHookTests {

 	private static final String BUNDLE_X = "X";

 	private static final Version BUNDLE_VERSION = new Version("0");

 	private long bundleId;

 	private static final String REGION_A = "RegionA";

 	private static final String BUNDLE_A = "BundleA";

 	private static final String REGION_B = "RegionB";

 	private static final String BUNDLE_B = "BundleB";

 	private static final String REGION_C = "RegionC";

 	private static final String BUNDLE_C = "BundleC";

 	private static final String REGION_D = "RegionD";

 	private static final String BUNDLE_D = "BundleD";

 	private RegionDigraph digraph;

 	private EventHook bundleEventHook;

 	private Map<String, Region> regions;

 	private Map<String, Bundle> bundles;

 	private ThreadLocal<Region> threadLocal;

 	@Before
 	public void setUp() throws Exception {
 		this.bundleId = 1L;
 		this.regions = new HashMap<String, Region>();
 		this.bundles = new HashMap<String, Bundle>();

 		StubBundle stubSystemBundle = new StubBundle(0L, "osgi.framework", new Version("0"), "loc");
 		StubBundleContext stubBundleContext = new StubBundleContext();
 		stubBundleContext.addInstalledBundle(stubSystemBundle);
 		this.threadLocal = new ThreadLocal<Region>();
 		this.digraph = RegionReflectionUtils.newStandardRegionDigraph(stubBundleContext, this.threadLocal);
 		this.bundleEventHook = RegionReflectionUtils.newRegionBundleEventHook(digraph, threadLocal, stubSystemBundle.getBundleId());

 		// Create regions A, B, C, D containing bundles A, B, C, D, respectively.
 		createRegion(REGION_A, BUNDLE_A);
 		createRegion(REGION_B, BUNDLE_B);
 		createRegion(REGION_C, BUNDLE_C);
 		createRegion(REGION_D, BUNDLE_D);

 		createBundle(BUNDLE_X);
 	}

 	@After
 	public void tearDown() throws Exception {
 		// nothing
 	}

 	@Test
 	public void testEventInSameRegion() {
 		Collection<BundleContext> contexts = bundleContexts(BUNDLE_A);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_A), contexts);
 		assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
 	}

 	@Test
 	public void testEventInDisconnectedRegion() {
 		Collection<BundleContext> contexts = bundleContexts(BUNDLE_A);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_B), contexts);
 		assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
 	}

 	@Test
 	public void testEventConnectedRegionAllowed() throws BundleException, InvalidSyntaxException {
 		doTestEventConnectedRegionAllowed(false);
 	}

 	@Test
 	public void testEventConnectedRegionAllowedWithNegate() throws BundleException, InvalidSyntaxException {
 		doTestEventConnectedRegionAllowed(true);
 	}

 	private void doTestEventConnectedRegionAllowed(boolean negate) throws BundleException, InvalidSyntaxException {
 		RegionFilter filter = createFilter(negate, BUNDLE_B);
 		region(REGION_A).connectRegion(region(REGION_B), filter);

 		Collection<BundleContext> contexts = bundleContexts(BUNDLE_A);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_B), contexts);
 		assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
 	}

 	@Test
 	public void testEventConnectedRegionFiltering() throws BundleException, InvalidSyntaxException {
 		doTestEventConnectedRegionFiltering(false);
 	}

 	@Test
 	public void testEventConnectedRegionFilteringWithNegate() throws BundleException, InvalidSyntaxException {
 		doTestEventConnectedRegionFiltering(true);
 	}

 	private void doTestEventConnectedRegionFiltering(boolean negate) throws BundleException, InvalidSyntaxException {
 		region(REGION_A).connectRegion(region(REGION_B), createFilter(negate, BUNDLE_B));
 		Bundle x = createBundle(BUNDLE_X);
 		region(REGION_B).addBundle(x);

 		Collection<BundleContext> contexts = bundleContexts(BUNDLE_A, BUNDLE_B, BUNDLE_X);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_X), contexts);
 		assertTrue(contexts.contains(bundleContext(BUNDLE_B)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_X)));
 		assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
 	}

 	@Test
 	public void testEventTransitive() throws BundleException, InvalidSyntaxException {
 		doTestEventTransitive(false);
 	}

 	@Test
 	public void testEventTransitiveWithNegate() throws BundleException, InvalidSyntaxException {
 		doTestEventTransitive(true);
 	}

 	private void doTestEventTransitive(boolean negate) throws BundleException, InvalidSyntaxException {
 		region(REGION_A).connectRegion(region(REGION_B), createFilter(negate, BUNDLE_C));
 		region(REGION_B).connectRegion(region(REGION_C), createFilter(negate, BUNDLE_C));
 		region(REGION_C).addBundle(bundle(BUNDLE_X));

 		Collection<BundleContext> contexts = bundleContexts(BUNDLE_A, BUNDLE_B, BUNDLE_X);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_C), contexts);
 		assertTrue(contexts.contains(bundleContext(BUNDLE_B)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_X)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_A)));

 		contexts = bundleContexts(BUNDLE_A, BUNDLE_B, BUNDLE_X);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_X), contexts);
 		assertFalse(contexts.contains(bundleContext(BUNDLE_B)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_X)));
 		assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
 	}

 	@Test
 	public void testEventInCyclicGraph() throws BundleException, InvalidSyntaxException {
 		doTestEventInCyclicGraph(false);
 	}

 	@Test
 	public void testEventInCyclicGraphWithNegate() throws BundleException, InvalidSyntaxException {

 		doTestEventInCyclicGraph(true);
 	}

 	private void doTestEventInCyclicGraph(boolean negate) throws BundleException, InvalidSyntaxException {
 		region(REGION_D).addBundle(bundle(BUNDLE_X));

 		region(REGION_A).connectRegion(region(REGION_B), createFilter(negate, BUNDLE_D, BUNDLE_X));
 		region(REGION_B).connectRegion(region(REGION_A), createFilter(negate));

 		region(REGION_B).connectRegion(region(REGION_D), createFilter(negate, BUNDLE_D));
 		region(REGION_D).connectRegion(region(REGION_B), createFilter(negate));

 		region(REGION_B).connectRegion(region(REGION_C), createFilter(negate, BUNDLE_X));
 		region(REGION_C).connectRegion(region(REGION_B), createFilter(negate));

 		region(REGION_C).connectRegion(region(REGION_D), createFilter(negate, BUNDLE_X));
 		region(REGION_D).connectRegion(region(REGION_C), createFilter(negate));

 		region(REGION_A).connectRegion(region(REGION_C), createFilter(negate));
 		region(REGION_C).connectRegion(region(REGION_A), createFilter(negate));

 		region(REGION_D).connectRegion(region(REGION_A), createFilter(negate));
 		region(REGION_A).connectRegion(region(REGION_D), createFilter(negate));

 		Collection<BundleContext> contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_B), contexts);
 		assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_B)));

 		contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_C), contexts);
 		assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
 		assertFalse(contexts.contains(bundleContext(BUNDLE_B)));

 		contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_D), contexts);
 		assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_B)));

 		contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
 		this.bundleEventHook.event(bundleEvent(BUNDLE_X), contexts);
 		assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
 		assertTrue(contexts.contains(bundleContext(BUNDLE_B)));
 	}

 	@Test
 	public void testEventFromSystemBundle() {
 		Bundle systemBundle = new StubBundle(0L, "sys", BUNDLE_VERSION, "");
 		Collection<BundleContext> contexts = new ArrayList<BundleContext>(Arrays.asList(systemBundle.getBundleContext()));
 		this.bundleEventHook.event(bundleEvent(BUNDLE_A), contexts);
 		assertTrue(contexts.contains(systemBundle.getBundleContext()));
 	}

 	@Test
 	public void testEventFromBundleInNoRegion() {
 		Bundle stranger = createBundle("stranger");
 		Collection<BundleContext> contexts = new ArrayList<BundleContext>(Arrays.asList(stranger.getBundleContext()));
 		this.bundleEventHook.event(bundleEvent(BUNDLE_A), contexts);
 		assertTrue(contexts.isEmpty());
 	}

 	@Test
 	public void testDefaultRegion() {
 		this.digraph.setDefaultRegion(null);
 		Bundle x = createBundle("installed.X");
 		this.bundleEventHook.event(new BundleEvent(BundleEvent.INSTALLED, x, bundle(BUNDLE_A)), Collections.<BundleContext> emptyList());
 		assertTrue(this.digraph.getRegion(x).equals(region(REGION_A)));

 		this.digraph.setDefaultRegion(region(REGION_B));
 		Bundle y = createBundle("installed.Y");
 		this.bundleEventHook.event(new BundleEvent(BundleEvent.INSTALLED, y, bundle(BUNDLE_A)), Collections.<BundleContext> emptyList());
 		assertTrue(this.digraph.getRegion(y).equals(region(REGION_B)));
 	}

 	private Region createRegion(String regionName, String... bundleSymbolicNames) throws BundleException {
 		Region region = this.digraph.createRegion(regionName);
 		for (String bundleSymbolicName : bundleSymbolicNames) {
 			Bundle stubBundle = createBundle(bundleSymbolicName);
 			region.addBundle(stubBundle);
 		}
 		this.regions.put(regionName, region);
 		return region;
 	}

 	private Region region(String regionName) {
 		return this.regions.get(regionName);
 	}

 	private RegionFilter createFilter(boolean negate, String... bundleSymbolicNames) throws InvalidSyntaxException {
 		Collection<String> filters = new ArrayList<String>(bundleSymbolicNames.length);
 		for (String bundleSymbolicName : bundleSymbolicNames) {
 			filters.add('(' + RegionFilter.VISIBLE_BUNDLE_NAMESPACE + '=' + bundleSymbolicName + ')');
 		}
 		RegionFilterBuilder builder = digraph.createRegionFilterBuilder();
 		for (String filter : filters) {
 			builder.allow(RegionFilter.VISIBLE_BUNDLE_NAMESPACE, filter);
 		}

 		if (negate) {
 			String negateFilter = "(!(|" + "(" + RegionFilter.VISIBLE_ALL_NAMESPACE_ATTRIBUTE + "=" + RegionFilter.VISIBLE_BUNDLE_NAMESPACE + ")" + "(" + RegionFilter.VISIBLE_ALL_NAMESPACE_ATTRIBUTE + "=" + RegionFilter.VISIBLE_BUNDLE_LIFECYCLE_NAMESPACE + ")" + "))";
 			builder.allow(RegionFilter.VISIBLE_ALL_NAMESPACE, negateFilter);
 		}
 		return builder.build();
 	}

 	private Bundle createBundle(String bundleSymbolicName) {
 		Bundle stubBundle = new StubBundle(this.bundleId++, bundleSymbolicName, BUNDLE_VERSION, "loc:" + bundleSymbolicName);
 		this.bundles.put(bundleSymbolicName, stubBundle);
 		return stubBundle;
 	}

 	private Collection<BundleContext> bundleContexts(String... bundleSymbolicNames) {
 		Collection<BundleContext> contexts = new ArrayList<BundleContext>();
 		for (String symbolicName : bundleSymbolicNames) {
 			contexts.add(bundleContext(symbolicName));
 		}
 		return contexts;
 	}

 	private BundleContext bundleContext(String bundleSymbolicName) {
 		return bundle(bundleSymbolicName).getBundleContext();
 	}

 	private BundleEvent bundleEvent(String budnleSymbolicName) {
 		return new BundleEvent(BundleEvent.STARTED, bundle(budnleSymbolicName));
 	}

 	private Bundle bundle(String bundleSymbolicName) {
 		Bundle bundleA = this.bundles.get(bundleSymbolicName);
 		return bundleA;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2011, 2015 VMware Inc. 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:
	* SpringSource, a division of VMware - initial API and implementation and/or initial documentation
	*******************************************************************************/

	package org.eclipse.equinox.region.internal.tests.hook;

	import static org.junit.Assert.assertFalse;
	import static org.junit.Assert.assertTrue;

	import java.util.*;
	import org.eclipse.equinox.region.*;
	import org.eclipse.equinox.region.internal.tests.RegionReflectionUtils;
	import org.eclipse.virgo.teststubs.osgi.framework.StubBundle;
	import org.eclipse.virgo.teststubs.osgi.framework.StubBundleContext;
	import org.junit.*;
	import org.osgi.framework.*;
	import org.osgi.framework.hooks.bundle.EventHook;

	public class RegionBundleEventHookTests {

	private static final String BUNDLE_X = "X";

	private static final Version BUNDLE_VERSION = new Version("0");

	private long bundleId;

	private static final String REGION_A = "RegionA";

	private static final String BUNDLE_A = "BundleA";

	private static final String REGION_B = "RegionB";

	private static final String BUNDLE_B = "BundleB";

	private static final String REGION_C = "RegionC";

	private static final String BUNDLE_C = "BundleC";

	private static final String REGION_D = "RegionD";

	private static final String BUNDLE_D = "BundleD";

	private RegionDigraph digraph;

	private EventHook bundleEventHook;

	private Map<String, Region> regions;

	private Map<String, Bundle> bundles;

	private ThreadLocal<Region> threadLocal;

	@Before
	public void setUp() throws Exception {
	this.bundleId = 1L;
	this.regions = new HashMap<String, Region>();
	this.bundles = new HashMap<String, Bundle>();

	StubBundle stubSystemBundle = new StubBundle(0L, "osgi.framework", new Version("0"), "loc");
	StubBundleContext stubBundleContext = new StubBundleContext();
	stubBundleContext.addInstalledBundle(stubSystemBundle);
	this.threadLocal = new ThreadLocal<Region>();
	this.digraph = RegionReflectionUtils.newStandardRegionDigraph(stubBundleContext, this.threadLocal);
	this.bundleEventHook = RegionReflectionUtils.newRegionBundleEventHook(digraph, threadLocal, stubSystemBundle.getBundleId());

	// Create regions A, B, C, D containing bundles A, B, C, D, respectively.
	createRegion(REGION_A, BUNDLE_A);
	createRegion(REGION_B, BUNDLE_B);
	createRegion(REGION_C, BUNDLE_C);
	createRegion(REGION_D, BUNDLE_D);

	createBundle(BUNDLE_X);
	}

	@After
	public void tearDown() throws Exception {
	// nothing
	}

	@Test
	public void testEventInSameRegion() {
	Collection<BundleContext> contexts = bundleContexts(BUNDLE_A);
	this.bundleEventHook.event(bundleEvent(BUNDLE_A), contexts);
	assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
	}

	@Test
	public void testEventInDisconnectedRegion() {
	Collection<BundleContext> contexts = bundleContexts(BUNDLE_A);
	this.bundleEventHook.event(bundleEvent(BUNDLE_B), contexts);
	assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
	}

	@Test
	public void testEventConnectedRegionAllowed() throws BundleException, InvalidSyntaxException {
	doTestEventConnectedRegionAllowed(false);
	}

	@Test
	public void testEventConnectedRegionAllowedWithNegate() throws BundleException, InvalidSyntaxException {
	doTestEventConnectedRegionAllowed(true);
	}

	private void doTestEventConnectedRegionAllowed(boolean negate) throws BundleException, InvalidSyntaxException {
	RegionFilter filter = createFilter(negate, BUNDLE_B);
	region(REGION_A).connectRegion(region(REGION_B), filter);

	Collection<BundleContext> contexts = bundleContexts(BUNDLE_A);
	this.bundleEventHook.event(bundleEvent(BUNDLE_B), contexts);
	assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
	}

	@Test
	public void testEventConnectedRegionFiltering() throws BundleException, InvalidSyntaxException {
	doTestEventConnectedRegionFiltering(false);
	}

	@Test
	public void testEventConnectedRegionFilteringWithNegate() throws BundleException, InvalidSyntaxException {
	doTestEventConnectedRegionFiltering(true);
	}

	private void doTestEventConnectedRegionFiltering(boolean negate) throws BundleException, InvalidSyntaxException {
	region(REGION_A).connectRegion(region(REGION_B), createFilter(negate, BUNDLE_B));
	Bundle x = createBundle(BUNDLE_X);
	region(REGION_B).addBundle(x);

	Collection<BundleContext> contexts = bundleContexts(BUNDLE_A, BUNDLE_B, BUNDLE_X);
	this.bundleEventHook.event(bundleEvent(BUNDLE_X), contexts);
	assertTrue(contexts.contains(bundleContext(BUNDLE_B)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_X)));
	assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
	}

	@Test
	public void testEventTransitive() throws BundleException, InvalidSyntaxException {
	doTestEventTransitive(false);
	}

	@Test
	public void testEventTransitiveWithNegate() throws BundleException, InvalidSyntaxException {
	doTestEventTransitive(true);
	}

	private void doTestEventTransitive(boolean negate) throws BundleException, InvalidSyntaxException {
	region(REGION_A).connectRegion(region(REGION_B), createFilter(negate, BUNDLE_C));
	region(REGION_B).connectRegion(region(REGION_C), createFilter(negate, BUNDLE_C));
	region(REGION_C).addBundle(bundle(BUNDLE_X));

	Collection<BundleContext> contexts = bundleContexts(BUNDLE_A, BUNDLE_B, BUNDLE_X);
	this.bundleEventHook.event(bundleEvent(BUNDLE_C), contexts);
	assertTrue(contexts.contains(bundleContext(BUNDLE_B)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_X)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_A)));

	contexts = bundleContexts(BUNDLE_A, BUNDLE_B, BUNDLE_X);
	this.bundleEventHook.event(bundleEvent(BUNDLE_X), contexts);
	assertFalse(contexts.contains(bundleContext(BUNDLE_B)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_X)));
	assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
	}

	@Test
	public void testEventInCyclicGraph() throws BundleException, InvalidSyntaxException {
	doTestEventInCyclicGraph(false);
	}

	@Test
	public void testEventInCyclicGraphWithNegate() throws BundleException, InvalidSyntaxException {

	doTestEventInCyclicGraph(true);
	}

	private void doTestEventInCyclicGraph(boolean negate) throws BundleException, InvalidSyntaxException {
	region(REGION_D).addBundle(bundle(BUNDLE_X));

	region(REGION_A).connectRegion(region(REGION_B), createFilter(negate, BUNDLE_D, BUNDLE_X));
	region(REGION_B).connectRegion(region(REGION_A), createFilter(negate));

	region(REGION_B).connectRegion(region(REGION_D), createFilter(negate, BUNDLE_D));
	region(REGION_D).connectRegion(region(REGION_B), createFilter(negate));

	region(REGION_B).connectRegion(region(REGION_C), createFilter(negate, BUNDLE_X));
	region(REGION_C).connectRegion(region(REGION_B), createFilter(negate));

	region(REGION_C).connectRegion(region(REGION_D), createFilter(negate, BUNDLE_X));
	region(REGION_D).connectRegion(region(REGION_C), createFilter(negate));

	region(REGION_A).connectRegion(region(REGION_C), createFilter(negate));
	region(REGION_C).connectRegion(region(REGION_A), createFilter(negate));

	region(REGION_D).connectRegion(region(REGION_A), createFilter(negate));
	region(REGION_A).connectRegion(region(REGION_D), createFilter(negate));

	Collection<BundleContext> contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
	this.bundleEventHook.event(bundleEvent(BUNDLE_B), contexts);
	assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_B)));

	contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
	this.bundleEventHook.event(bundleEvent(BUNDLE_C), contexts);
	assertFalse(contexts.contains(bundleContext(BUNDLE_A)));
	assertFalse(contexts.contains(bundleContext(BUNDLE_B)));

	contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
	this.bundleEventHook.event(bundleEvent(BUNDLE_D), contexts);
	assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_B)));

	contexts = bundleContexts(BUNDLE_A, BUNDLE_B);
	this.bundleEventHook.event(bundleEvent(BUNDLE_X), contexts);
	assertTrue(contexts.contains(bundleContext(BUNDLE_A)));
	assertTrue(contexts.contains(bundleContext(BUNDLE_B)));
	}

	@Test
	public void testEventFromSystemBundle() {
	Bundle systemBundle = new StubBundle(0L, "sys", BUNDLE_VERSION, "");
	Collection<BundleContext> contexts = new ArrayList<BundleContext>(Arrays.asList(systemBundle.getBundleContext()));
	this.bundleEventHook.event(bundleEvent(BUNDLE_A), contexts);
	assertTrue(contexts.contains(systemBundle.getBundleContext()));
	}

	@Test
	public void testEventFromBundleInNoRegion() {
	Bundle stranger = createBundle("stranger");
	Collection<BundleContext> contexts = new ArrayList<BundleContext>(Arrays.asList(stranger.getBundleContext()));
	this.bundleEventHook.event(bundleEvent(BUNDLE_A), contexts);
	assertTrue(contexts.isEmpty());
	}

	@Test
	public void testDefaultRegion() {
	this.digraph.setDefaultRegion(null);
	Bundle x = createBundle("installed.X");
	this.bundleEventHook.event(new BundleEvent(BundleEvent.INSTALLED, x, bundle(BUNDLE_A)), Collections.<BundleContext> emptyList());
	assertTrue(this.digraph.getRegion(x).equals(region(REGION_A)));

	this.digraph.setDefaultRegion(region(REGION_B));
	Bundle y = createBundle("installed.Y");
	this.bundleEventHook.event(new BundleEvent(BundleEvent.INSTALLED, y, bundle(BUNDLE_A)), Collections.<BundleContext> emptyList());
	assertTrue(this.digraph.getRegion(y).equals(region(REGION_B)));
	}

	private Region createRegion(String regionName, String... bundleSymbolicNames) throws BundleException {
	Region region = this.digraph.createRegion(regionName);
	for (String bundleSymbolicName : bundleSymbolicNames) {
	Bundle stubBundle = createBundle(bundleSymbolicName);
	region.addBundle(stubBundle);
	}
	this.regions.put(regionName, region);
	return region;
	}

	private Region region(String regionName) {
	return this.regions.get(regionName);
	}

	private RegionFilter createFilter(boolean negate, String... bundleSymbolicNames) throws InvalidSyntaxException {
	Collection<String> filters = new ArrayList<String>(bundleSymbolicNames.length);
	for (String bundleSymbolicName : bundleSymbolicNames) {
	filters.add('(' + RegionFilter.VISIBLE_BUNDLE_NAMESPACE + '=' + bundleSymbolicName + ')');
	}
	RegionFilterBuilder builder = digraph.createRegionFilterBuilder();
	for (String filter : filters) {
	builder.allow(RegionFilter.VISIBLE_BUNDLE_NAMESPACE, filter);
	}

	if (negate) {
	String negateFilter = "(!(\|" + "(" + RegionFilter.VISIBLE_ALL_NAMESPACE_ATTRIBUTE + "=" + RegionFilter.VISIBLE_BUNDLE_NAMESPACE + ")" + "(" + RegionFilter.VISIBLE_ALL_NAMESPACE_ATTRIBUTE + "=" + RegionFilter.VISIBLE_BUNDLE_LIFECYCLE_NAMESPACE + ")" + "))";
	builder.allow(RegionFilter.VISIBLE_ALL_NAMESPACE, negateFilter);
	}
	return builder.build();
	}

	private Bundle createBundle(String bundleSymbolicName) {
	Bundle stubBundle = new StubBundle(this.bundleId++, bundleSymbolicName, BUNDLE_VERSION, "loc:" + bundleSymbolicName);
	this.bundles.put(bundleSymbolicName, stubBundle);
	return stubBundle;
	}

	private Collection<BundleContext> bundleContexts(String... bundleSymbolicNames) {
	Collection<BundleContext> contexts = new ArrayList<BundleContext>();
	for (String symbolicName : bundleSymbolicNames) {
	contexts.add(bundleContext(symbolicName));
	}
	return contexts;
	}

	private BundleContext bundleContext(String bundleSymbolicName) {
	return bundle(bundleSymbolicName).getBundleContext();
	}

	private BundleEvent bundleEvent(String budnleSymbolicName) {
	return new BundleEvent(BundleEvent.STARTED, bundle(budnleSymbolicName));
	}

	private Bundle bundle(String bundleSymbolicName) {
	Bundle bundleA = this.bundles.get(bundleSymbolicName);
	return bundleA;
	}
	}