core/tests/org.eclipse.dltk.ui.tests/src/org/eclipse/dltk/ui/tests/navigator/scriptexplorer/ContentProviderTests5.java - dltk/org.eclipse.dltk.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2017 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
  *
  *******************************************************************************/
 package org.eclipse.dltk.ui.tests.navigator.scriptexplorer;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;

 import java.io.ByteArrayInputStream;
 import java.io.UnsupportedEncodingException;
 import java.util.Arrays;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IWorkspace;
 import org.eclipse.core.resources.IWorkspaceDescription;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.dltk.core.IProjectFragment;
 import org.eclipse.dltk.core.IScriptFolder;
 import org.eclipse.dltk.core.IScriptProject;
 import org.eclipse.dltk.core.IScriptProjectFilenames;
 import org.eclipse.dltk.core.ISourceModule;
 import org.eclipse.dltk.internal.ui.scriptview.ScriptExplorerPart;
 import org.eclipse.dltk.internal.ui.util.CoreUtility;
 import org.eclipse.dltk.ui.DLTKUIPlugin;
 import org.eclipse.dltk.ui.PreferenceConstants;
 import org.eclipse.dltk.ui.tests.ScriptProjectHelper;
 import org.eclipse.jface.viewers.ITreeContentProvider;
 import org.eclipse.ui.IViewPart;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.PartInitException;
 import org.eclipse.ui.PlatformUI;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;

 /**
  * Tests for the PackageExplorerContentProvider. Bugs:
  * <ul>
  * <li>66694 PackageExplorer shows elements twice</li>
  * <li>35851 Content of folders with illegal package name are no shown in
  * package explorer</li>
  * <li>35851 Content of folders with illegal package name are no shown in
  * package explorer</li>
  * <li>35851 Content of folders with illegal package name are no shown in
  * package explorer</li>
  * </ul>
  */
 public class ContentProviderTests5 {
 	private boolean fEnableAutoBuildAfterTesting;
 	private ITreeContentProvider fProvider;

 	private IScriptProject fJProject;
 	private IFile fDotBuildpath;
 	private IFile fDotProject;

 	@Before
 	public void setUp() throws Exception {
 		IWorkspace workspace = ResourcesPlugin.getWorkspace();
 		assertNotNull(workspace);
 		IWorkspaceDescription workspaceDesc = workspace.getDescription();
 		fEnableAutoBuildAfterTesting = workspaceDesc.isAutoBuilding();
 		if (fEnableAutoBuildAfterTesting)
 			ScriptProjectHelper.setAutoBuilding(false);

 		// create project
 		fJProject = ScriptProjectHelper
 				.createScriptProject("ContentProviderProject");
 		assertNotNull(fJProject);

 		Object[] resource = fJProject.getForeignResources();
 		for (int i = 0; i < resource.length; i++) {
 			Object object = resource[i];
 			if (object instanceof IFile) {
 				IFile file = (IFile) object;
 				if (IScriptProjectFilenames.BUILDPATH_FILENAME.equals(file
 						.getName()))
 					fDotBuildpath = file;
 				else if (IScriptProjectFilenames.PROJECT_FILENAME.equals(file
 						.getName()))
 					fDotProject = file;
 			}
 		}
 		assertNotNull(fDotBuildpath);
 		assertNotNull(fDotProject);

 		setUpView();
 	}

 	private void setUpView() throws PartInitException {
 		IWorkbench workbench = PlatformUI.getWorkbench();
 		assertNotNull(workbench);

 		IWorkbenchPage page = workbench.getActiveWorkbenchWindow()
 				.getActivePage();
 		assertNotNull(page);

 		IViewPart myPart = page.showView(DLTKUIPlugin.ID_SCRIPTEXPLORER);
 		assertTrue("Unable to get view", myPart instanceof ScriptExplorerPart);
 		ScriptExplorerPart part = (ScriptExplorerPart) myPart;
 		if (!part.isFlatLayout()) {
 			part.setFlatLayout(true);
 		}
 		fProvider = (ITreeContentProvider) part.getTreeViewer()
 				.getContentProvider();
 		setFolding(false);
 		assertNotNull(fProvider);
 	}

 	private void setFolding(boolean fold) {
 		DLTKUIPlugin
 				.getDefault()
 				.getPreferenceStore()
 				.setValue(
 						PreferenceConstants.APPEARANCE_FOLD_PACKAGES_IN_PACKAGE_EXPLORER,
 						fold);
 	}

 	@After
 	public void tearDown() throws Exception {
 		ScriptProjectHelper.delete(fJProject);

 		if (fEnableAutoBuildAfterTesting)
 			ScriptProjectHelper.setAutoBuilding(true);
 	}

 	private ByteArrayInputStream asInputStream(String string)
 			throws UnsupportedEncodingException {
 		return new ByteArrayInputStream(string.getBytes(ResourcesPlugin
 				.getEncoding()));
 	}

 	public void REM_testProjectSource1() throws Exception { // bug 35851, 66694
 		IPath[] inclusionFilters = { new Path("**"), new Path("excl/incl/") };
 		IPath[] exclusionFilters = { new Path("excl/*"), new Path("x/*.txt"),
 				new Path("y/") };
 		IProjectFragment root = ScriptProjectHelper.addSourceContainer(
 				fJProject, "", inclusionFilters, exclusionFilters);

 		IScriptFolder defaultPackage = root.createScriptFolder("", true, null);

 		IFolder ab = fJProject.getProject().getFolder("a-b");
 		CoreUtility.createFolder(ab, true, true, null);
 		IFile description = ab.getFile("description.txt");
 		description.create(asInputStream("description"), true, null);

 		IScriptFolder exclInclPackage = root.createScriptFolder("excl/incl",
 				true, null);
 		ISourceModule In = exclInclPackage.createSourceModule("In.txt",
 				"package excl.incl;\r\n" + "public class In {\r\n" + "}\r\n",
 				true, null);

 		IFolder excl = fJProject.getProject().getFolder("excl");
 		IFile Ex = excl.getFile("Ex.txt");
 		Ex.create(asInputStream("package excl;\npublic class Ex{}"), false,
 				null);

 		IScriptFolder xPackage = root.createScriptFolder("x", true, null);
 		IFolder x = fJProject.getProject().getFolder("x");
 		IFile xhidden = x.getFile(".hidden");
 		xhidden.create(asInputStream(""), true, null);
 		IFile X = x.getFile("X.txt");
 		X.create(
 				asInputStream("package x;\r\npublic class X {\r\n\t\r\n}\r\n"),
 				true, null);

 		x.copy(new Path("y"), true, null);
 		IFolder y = fJProject.getProject().getFolder("y");
 		IFile yX = y.getFile("X.txt");
 		IFile yhidden = y.getFile(".hidden");

 		IScriptFolder zPackage = root.createScriptFolder("z", true, null);
 		ISourceModule Z = zPackage.createSourceModule("Z.txt",
 				"package z;public class Z{}", true, null);

 		assertEqualElements(new Object[] { defaultPackage, exclInclPackage,
 				xPackage, zPackage, ab, excl, y, fDotBuildpath, fDotProject },
 				fProvider.getChildren(fJProject));
 		assertEqualElements(new Object[0], fProvider
 				.getChildren(defaultPackage));
 		assertEqualElements(new Object[] { In }, fProvider
 				.getChildren(exclInclPackage));
 		assertEqualElements(new Object[] { Ex }, fProvider.getChildren(excl));
 		assertEqualElements(new Object[] { X, xhidden }, fProvider
 				.getChildren(xPackage));
 		assertEquals(xPackage, fProvider.getParent(X));
 		assertEquals(xPackage, fProvider.getParent(xhidden));
 		assertEqualElements(new Object[] { Z }, fProvider.getChildren(zPackage));
 		assertEqualElements(new Object[] { description }, fProvider
 				.getChildren(ab));
 		assertEqualElements(new Object[] { Ex }, fProvider.getChildren(excl));
 		assertEqualElements(new Object[] { yX, yhidden }, fProvider
 				.getChildren(y));
 	}

 	public void REM_testNestedSource1() throws Exception { // bug 35851, 66694
 		// <BuildpathEntry excluding="a-b/a/b/" kind="src" path="src"/>
 		// <BuildpathEntry kind="src" path="src/a-b/a/b"/>
 		IPath[] inclusionFilters = {};
 		IPath[] exclusionFilters = { new Path("a-b/a/b/") };
 		IProjectFragment src = ScriptProjectHelper.addSourceContainer(
 				fJProject, "src", inclusionFilters, exclusionFilters);
 		IProjectFragment srcabab = ScriptProjectHelper.addSourceContainer(
 				fJProject, "src/a-b/a/b", new IPath[0], new IPath[0]);

 		IScriptFolder defaultSrc = src.createScriptFolder("", true, null);
 		IScriptFolder p = src.createScriptFolder("p", true, null);
 		IFile file = ((IFolder) p.getCorrespondingResource())
 				.getFile("file.txt");
 		file.create(asInputStream("f"), true, null);

 		IFolder ab = ((IFolder) src.getUnderlyingResource()).getFolder("a-b");
 		CoreUtility.createFolder(ab, true, true, null);
 		IFolder aba = ab.getFolder("a");
 		CoreUtility.createFolder(aba, true, true, null);
 		IFile abaTxt = aba.getFile("aba.txt");
 		abaTxt.create(asInputStream("x"), true, null);

 		IScriptFolder defaultAbab = srcabab.createScriptFolder("", true, null);
 		ISourceModule b = defaultAbab.createSourceModule("B.txt",
 				"public class B {}", true, null);

 		assertEqualElements(new Object[] { src, srcabab, fDotBuildpath,
 				fDotProject }, fProvider.getChildren(fJProject));
 		assertEqualElements(new Object[] { defaultSrc, p, ab }, fProvider
 				.getChildren(src));
 		assertEqualElements(new Object[] {}, fProvider.getChildren(defaultSrc));
 		assertEqualElements(new Object[] { file }, fProvider.getChildren(p));
 		assertEqualElements(new Object[] { aba }, fProvider.getChildren(ab));
 		assertEqualElements(new Object[] { abaTxt }, fProvider.getChildren(aba));

 		assertEqualElements(new Object[] { defaultAbab }, fProvider
 				.getChildren(srcabab));
 		assertEqualElements(new Object[] { b }, fProvider
 				.getChildren(defaultAbab));
 	}
 	@Test
 	public void testInclExcl1() throws Exception { // bug 35851, 66694
 		// <BuildpathEntry including="a/b/c/" excluding="a/b/c/d/" kind="src"
 		// path="src2"/>
 		IPath[] inclusionFilters = { new Path("a/b/c/") };
 		IPath[] exclusionFilters = { new Path("a/b/c/d/") };
 		IProjectFragment src = ScriptProjectHelper.addSourceContainer(
 				fJProject, "src", inclusionFilters, exclusionFilters);

 		IScriptFolder abc = src.createScriptFolder("a/b/c", true, null);
 		ISourceModule x = abc.createSourceModule("X.txt", "", true, null);
 		IFolder d = ((IFolder) abc.getUnderlyingResource()).getFolder("d");
 		CoreUtility.createFolder(d, false, true, null);
 		IFile dTxt = d.getFile("d.txt");
 		dTxt.create(asInputStream(""), true, null);

 		IContainer b = d.getParent().getParent();
 		IContainer a = b.getParent();

 		assertEqualElements(new Object[] { src, fDotBuildpath, fDotProject },
 				fProvider.getChildren(fJProject));
 		assertEqualElements(new Object[] { abc, a }, fProvider.getChildren(src));
 		assertEqualElements(new Object[] { x, d }, fProvider.getChildren(abc));
 		assertEqualElements(new Object[] { dTxt }, fProvider.getChildren(d));
 		assertEqualElements(new Object[] { b }, fProvider.getChildren(a));
 	}

 	private void assertEqualElements(Object[] expected, Object[] actual) {
 		assertEquals("array length", expected.length, actual.length);
 		exp: for (int i = 0; i < expected.length; i++) {
 			Object e = expected[i];
 			for (int j = 0; j < actual.length; j++) {
 				Object a = actual[j];
 				if (e.equals(a))
 					continue exp;
 			}
 			fail("expected[" + i + "] not found in actual:"
 					+ Arrays.asList(actual).toString());
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2017 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
	*
	*******************************************************************************/
	package org.eclipse.dltk.ui.tests.navigator.scriptexplorer;

	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertNotNull;
	import static org.junit.Assert.assertTrue;
	import static org.junit.Assert.fail;

	import java.io.ByteArrayInputStream;
	import java.io.UnsupportedEncodingException;
	import java.util.Arrays;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IFolder;
	import org.eclipse.core.resources.IWorkspace;
	import org.eclipse.core.resources.IWorkspaceDescription;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.dltk.core.IProjectFragment;
	import org.eclipse.dltk.core.IScriptFolder;
	import org.eclipse.dltk.core.IScriptProject;
	import org.eclipse.dltk.core.IScriptProjectFilenames;
	import org.eclipse.dltk.core.ISourceModule;
	import org.eclipse.dltk.internal.ui.scriptview.ScriptExplorerPart;
	import org.eclipse.dltk.internal.ui.util.CoreUtility;
	import org.eclipse.dltk.ui.DLTKUIPlugin;
	import org.eclipse.dltk.ui.PreferenceConstants;
	import org.eclipse.dltk.ui.tests.ScriptProjectHelper;
	import org.eclipse.jface.viewers.ITreeContentProvider;
	import org.eclipse.ui.IViewPart;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPage;
	import org.eclipse.ui.PartInitException;
	import org.eclipse.ui.PlatformUI;
	import org.junit.After;
	import org.junit.Before;
	import org.junit.Test;

	/**
	* Tests for the PackageExplorerContentProvider. Bugs:
	* <ul>
	* <li>66694 PackageExplorer shows elements twice</li>
	* <li>35851 Content of folders with illegal package name are no shown in
	* package explorer</li>
	* <li>35851 Content of folders with illegal package name are no shown in
	* package explorer</li>
	* <li>35851 Content of folders with illegal package name are no shown in
	* package explorer</li>
	* </ul>
	*/
	public class ContentProviderTests5 {
	private boolean fEnableAutoBuildAfterTesting;
	private ITreeContentProvider fProvider;

	private IScriptProject fJProject;
	private IFile fDotBuildpath;
	private IFile fDotProject;

	@Before
	public void setUp() throws Exception {
	IWorkspace workspace = ResourcesPlugin.getWorkspace();
	assertNotNull(workspace);
	IWorkspaceDescription workspaceDesc = workspace.getDescription();
	fEnableAutoBuildAfterTesting = workspaceDesc.isAutoBuilding();
	if (fEnableAutoBuildAfterTesting)
	ScriptProjectHelper.setAutoBuilding(false);

	// create project
	fJProject = ScriptProjectHelper
	.createScriptProject("ContentProviderProject");
	assertNotNull(fJProject);

	Object[] resource = fJProject.getForeignResources();
	for (int i = 0; i < resource.length; i++) {
	Object object = resource[i];
	if (object instanceof IFile) {
	IFile file = (IFile) object;
	if (IScriptProjectFilenames.BUILDPATH_FILENAME.equals(file
	.getName()))
	fDotBuildpath = file;
	else if (IScriptProjectFilenames.PROJECT_FILENAME.equals(file
	.getName()))
	fDotProject = file;
	}
	}
	assertNotNull(fDotBuildpath);
	assertNotNull(fDotProject);

	setUpView();
	}

	private void setUpView() throws PartInitException {
	IWorkbench workbench = PlatformUI.getWorkbench();
	assertNotNull(workbench);

	IWorkbenchPage page = workbench.getActiveWorkbenchWindow()
	.getActivePage();
	assertNotNull(page);

	IViewPart myPart = page.showView(DLTKUIPlugin.ID_SCRIPTEXPLORER);
	assertTrue("Unable to get view", myPart instanceof ScriptExplorerPart);
	ScriptExplorerPart part = (ScriptExplorerPart) myPart;
	if (!part.isFlatLayout()) {
	part.setFlatLayout(true);
	}
	fProvider = (ITreeContentProvider) part.getTreeViewer()
	.getContentProvider();
	setFolding(false);
	assertNotNull(fProvider);
	}

	private void setFolding(boolean fold) {
	DLTKUIPlugin
	.getDefault()
	.getPreferenceStore()
	.setValue(
	PreferenceConstants.APPEARANCE_FOLD_PACKAGES_IN_PACKAGE_EXPLORER,
	fold);
	}

	@After
	public void tearDown() throws Exception {
	ScriptProjectHelper.delete(fJProject);

	if (fEnableAutoBuildAfterTesting)
	ScriptProjectHelper.setAutoBuilding(true);
	}

	private ByteArrayInputStream asInputStream(String string)
	throws UnsupportedEncodingException {
	return new ByteArrayInputStream(string.getBytes(ResourcesPlugin
	.getEncoding()));
	}

	public void REM_testProjectSource1() throws Exception { // bug 35851, 66694
	IPath[] inclusionFilters = { new Path("**"), new Path("excl/incl/") };
	IPath[] exclusionFilters = { new Path("excl/"), new Path("x/.txt"),
	new Path("y/") };
	IProjectFragment root = ScriptProjectHelper.addSourceContainer(
	fJProject, "", inclusionFilters, exclusionFilters);

	IScriptFolder defaultPackage = root.createScriptFolder("", true, null);

	IFolder ab = fJProject.getProject().getFolder("a-b");
	CoreUtility.createFolder(ab, true, true, null);
	IFile description = ab.getFile("description.txt");
	description.create(asInputStream("description"), true, null);

	IScriptFolder exclInclPackage = root.createScriptFolder("excl/incl",
	true, null);
	ISourceModule In = exclInclPackage.createSourceModule("In.txt",
	"package excl.incl;\r\n" + "public class In {\r\n" + "}\r\n",
	true, null);

	IFolder excl = fJProject.getProject().getFolder("excl");
	IFile Ex = excl.getFile("Ex.txt");
	Ex.create(asInputStream("package excl;\npublic class Ex{}"), false,
	null);

	IScriptFolder xPackage = root.createScriptFolder("x", true, null);
	IFolder x = fJProject.getProject().getFolder("x");
	IFile xhidden = x.getFile(".hidden");
	xhidden.create(asInputStream(""), true, null);
	IFile X = x.getFile("X.txt");
	X.create(
	asInputStream("package x;\r\npublic class X {\r\n\t\r\n}\r\n"),
	true, null);

	x.copy(new Path("y"), true, null);
	IFolder y = fJProject.getProject().getFolder("y");
	IFile yX = y.getFile("X.txt");
	IFile yhidden = y.getFile(".hidden");

	IScriptFolder zPackage = root.createScriptFolder("z", true, null);
	ISourceModule Z = zPackage.createSourceModule("Z.txt",
	"package z;public class Z{}", true, null);

	assertEqualElements(new Object[] { defaultPackage, exclInclPackage,
	xPackage, zPackage, ab, excl, y, fDotBuildpath, fDotProject },
	fProvider.getChildren(fJProject));
	assertEqualElements(new Object[0], fProvider
	.getChildren(defaultPackage));
	assertEqualElements(new Object[] { In }, fProvider
	.getChildren(exclInclPackage));
	assertEqualElements(new Object[] { Ex }, fProvider.getChildren(excl));
	assertEqualElements(new Object[] { X, xhidden }, fProvider
	.getChildren(xPackage));
	assertEquals(xPackage, fProvider.getParent(X));
	assertEquals(xPackage, fProvider.getParent(xhidden));
	assertEqualElements(new Object[] { Z }, fProvider.getChildren(zPackage));
	assertEqualElements(new Object[] { description }, fProvider
	.getChildren(ab));
	assertEqualElements(new Object[] { Ex }, fProvider.getChildren(excl));
	assertEqualElements(new Object[] { yX, yhidden }, fProvider
	.getChildren(y));
	}

	public void REM_testNestedSource1() throws Exception { // bug 35851, 66694
	// <BuildpathEntry excluding="a-b/a/b/" kind="src" path="src"/>
	// <BuildpathEntry kind="src" path="src/a-b/a/b"/>
	IPath[] inclusionFilters = {};
	IPath[] exclusionFilters = { new Path("a-b/a/b/") };
	IProjectFragment src = ScriptProjectHelper.addSourceContainer(
	fJProject, "src", inclusionFilters, exclusionFilters);
	IProjectFragment srcabab = ScriptProjectHelper.addSourceContainer(
	fJProject, "src/a-b/a/b", new IPath[0], new IPath[0]);

	IScriptFolder defaultSrc = src.createScriptFolder("", true, null);
	IScriptFolder p = src.createScriptFolder("p", true, null);
	IFile file = ((IFolder) p.getCorrespondingResource())
	.getFile("file.txt");
	file.create(asInputStream("f"), true, null);

	IFolder ab = ((IFolder) src.getUnderlyingResource()).getFolder("a-b");
	CoreUtility.createFolder(ab, true, true, null);
	IFolder aba = ab.getFolder("a");
	CoreUtility.createFolder(aba, true, true, null);
	IFile abaTxt = aba.getFile("aba.txt");
	abaTxt.create(asInputStream("x"), true, null);

	IScriptFolder defaultAbab = srcabab.createScriptFolder("", true, null);
	ISourceModule b = defaultAbab.createSourceModule("B.txt",
	"public class B {}", true, null);

	assertEqualElements(new Object[] { src, srcabab, fDotBuildpath,
	fDotProject }, fProvider.getChildren(fJProject));
	assertEqualElements(new Object[] { defaultSrc, p, ab }, fProvider
	.getChildren(src));
	assertEqualElements(new Object[] {}, fProvider.getChildren(defaultSrc));
	assertEqualElements(new Object[] { file }, fProvider.getChildren(p));
	assertEqualElements(new Object[] { aba }, fProvider.getChildren(ab));
	assertEqualElements(new Object[] { abaTxt }, fProvider.getChildren(aba));

	assertEqualElements(new Object[] { defaultAbab }, fProvider
	.getChildren(srcabab));
	assertEqualElements(new Object[] { b }, fProvider
	.getChildren(defaultAbab));
	}
	@Test
	public void testInclExcl1() throws Exception { // bug 35851, 66694
	// <BuildpathEntry including="a/b/c/" excluding="a/b/c/d/" kind="src"
	// path="src2"/>
	IPath[] inclusionFilters = { new Path("a/b/c/") };
	IPath[] exclusionFilters = { new Path("a/b/c/d/") };
	IProjectFragment src = ScriptProjectHelper.addSourceContainer(
	fJProject, "src", inclusionFilters, exclusionFilters);

	IScriptFolder abc = src.createScriptFolder("a/b/c", true, null);
	ISourceModule x = abc.createSourceModule("X.txt", "", true, null);
	IFolder d = ((IFolder) abc.getUnderlyingResource()).getFolder("d");
	CoreUtility.createFolder(d, false, true, null);
	IFile dTxt = d.getFile("d.txt");
	dTxt.create(asInputStream(""), true, null);

	IContainer b = d.getParent().getParent();
	IContainer a = b.getParent();

	assertEqualElements(new Object[] { src, fDotBuildpath, fDotProject },
	fProvider.getChildren(fJProject));
	assertEqualElements(new Object[] { abc, a }, fProvider.getChildren(src));
	assertEqualElements(new Object[] { x, d }, fProvider.getChildren(abc));
	assertEqualElements(new Object[] { dTxt }, fProvider.getChildren(d));
	assertEqualElements(new Object[] { b }, fProvider.getChildren(a));
	}

	private void assertEqualElements(Object[] expected, Object[] actual) {
	assertEquals("array length", expected.length, actual.length);
	exp: for (int i = 0; i < expected.length; i++) {
	Object e = expected[i];
	for (int j = 0; j < actual.length; j++) {
	Object a = actual[j];
	if (e.equals(a))
	continue exp;
	}
	fail("expected[" + i + "] not found in actual:"
	+ Arrays.asList(actual).toString());
	}
	}
	}