org.eclipse.jdt.ui.tests.refactoring/test cases/org/eclipse/jdt/ui/tests/refactoring/IntroduceParameterObjectTests.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005, 2020 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *     Samrat Dhillon samrat.dhillon@gmail.com https://bugs.eclipse.org/bugs/show_bug.cgi?id=395558 and https://bugs.eclipse.org/bugs/show_bug.cgi?id=395561
  *******************************************************************************/
 package org.eclipse.jdt.ui.tests.refactoring;

 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;

 import java.io.IOException;
 import java.util.Hashtable;
 import java.util.Map;

 import org.junit.Test;

 import org.eclipse.core.runtime.NullProgressMonitor;

 import org.eclipse.jface.preference.IPreferenceStore;

 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
 import org.eclipse.ltk.core.refactoring.RefactoringStatusEntry;

 import org.eclipse.jdt.core.ICompilationUnit;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.IMethod;
 import org.eclipse.jdt.core.IPackageFragment;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.refactoring.descriptors.IntroduceParameterObjectDescriptor;
 import org.eclipse.jdt.core.refactoring.descriptors.IntroduceParameterObjectDescriptor.Parameter;

 import org.eclipse.jdt.internal.core.refactoring.descriptors.RefactoringSignatureDescriptorFactory;
 import org.eclipse.jdt.internal.corext.refactoring.base.RefactoringStatusCodes;

 import org.eclipse.jdt.ui.PreferenceConstants;
 import org.eclipse.jdt.ui.tests.refactoring.rules.RefactoringTestSetup;

 import org.eclipse.jdt.internal.ui.JavaPlugin;

 public class IntroduceParameterObjectTests extends GenericRefactoringTest {
 	private static final String DEFAULT_SUB_DIR= "sub";
 	private static final String REFACTORING_PATH= "IntroduceParameterObject/";

 	private IPackageFragment fPack;
 	protected IntroduceParameterObjectDescriptor fDescriptor;

 	public IntroduceParameterObjectTests() {
 		this.rts= new RefactoringTestSetup();
 	}

 	protected IntroduceParameterObjectTests(RefactoringTestSetup rts) {
 		super(rts);
 	}

 	private void checkAdditionalFile(String subdir, String fileName) throws Exception, JavaModelException, IOException {
 		IPackageFragment pack= getSubPackage(subdir);
 		ICompilationUnit cu= pack.getCompilationUnit(fileName+".java");
 		assertNotNull(cu);
 		assertTrue(cu.getPath() + " does not exist", cu.exists());
 		String actual= cu.getSource();
 		String expected= getFileContents(getOutputTestFileName(fileName));
 		assertEqualLines(expected, actual);
 	}

 	private void checkCaller(String subdir) throws Exception {
 		checkAdditionalFile(subdir, getCUName(true));
 	}

 	private void createAdditionalFile(String subDir, String fileName) throws Exception {
 		IPackageFragment pack= getSubPackage(subDir);
 		ICompilationUnit cu= createCUfromTestFile(pack, fileName, true);
 		assertNotNull(cu);
 		assertTrue(cu.exists());
 	}

 	private void createCaller(String subDir) throws Exception {
 		createAdditionalFile(subDir, getCUName(true));
 	}

 	private String getCUFileName(boolean caller) {
 		StringBuilder sb= new StringBuilder();
 		sb.append(getCUName(caller));
 		sb.append(".java");
 		return sb.toString();
 	}

 	private String getCUName(boolean caller) {
 		StringBuilder sb= new StringBuilder();
 		sb.append(Character.toUpperCase(getName().charAt(0)) + getName().substring(1));
 		if (caller)
 			sb.append("Caller");
 		return sb.toString();
 	}

 	@Override
 	protected String getRefactoringPath() {
 		return REFACTORING_PATH;
 	}

 	private IPackageFragment getSubPackage(String subDir) throws Exception {
 		IPackageFragment pack= getPackageP();
 		if (subDir != null) {
 			String packageName= pack.getElementName() + "." + subDir;
 			pack= getRoot().getPackageFragment(packageName);
 			if (!pack.exists()) {
 				IPackageFragment create= getRoot().createPackageFragment(packageName, true, new NullProgressMonitor());
 				assertNotNull(create);
 				assertTrue(create.exists());
 				return create;
 			}
 		}
 		return pack;
 	}

 	protected void runRefactoring(boolean expectError, boolean useSuggestedMethod) throws Exception {
 		RefactoringStatus status= performRefactoring(fDescriptor);
 		if (expectError) {
 			assertNotNull(status);
 			if (useSuggestedMethod){
 				final RefactoringStatusEntry entry= status.getEntryMatchingSeverity(RefactoringStatus.FATAL);
 				if (entry.getCode() == RefactoringStatusCodes.OVERRIDES_ANOTHER_METHOD || entry.getCode() == RefactoringStatusCodes.METHOD_DECLARED_IN_INTERFACE) {
 					final Object element= entry.getData();
 					fDescriptor.setMethod((IMethod) element);
 					status= performRefactoring(fDescriptor);
 				}
 			} else {
 				return;
 			}
 		}
 		assertNull(status+"",status);
 		String expected= getFileContents(getOutputTestFileName(getCUName(false)));
 		assertNotNull(expected);
 		ICompilationUnit resultCU= fPack.getCompilationUnit(getCUFileName(false));
 		assertNotNull(resultCU);
 		assertTrue(resultCU.exists());
 		String result= resultCU.getSource();
 		assertNotNull(result);
 		assertEqualLines(expected, result);
 		if (fDescriptor.isTopLevel()){
 			String packageName= fDescriptor.getPackageName();
 			if (packageName!=null)
 				fPack=getRoot().getPackageFragment(packageName);
 			assertNotNull(fPack);
 			String parameterClassFile= fDescriptor.getClassName()+".java";
 			ICompilationUnit unit= fPack.getCompilationUnit(parameterClassFile);
 			assertNotNull(unit);
 			assertTrue(unit.exists());
 			expected=getFileContents(getOutputTestFileName(fDescriptor.getClassName()));
 			result=unit.getSource();
 			assertNotNull(result);
 			assertEqualLines(expected, result);
 		}

 		assertParticipant(fDescriptor.getMethod().getDeclaringType());
 	}

 	private void assertParticipant(IType typeOfMethod) throws JavaModelException {
 		TestChangeMethodSignaturParticipant.testParticipant(typeOfMethod);
 	}

 	@Override
 	public void genericbefore() throws Exception {
 		super.genericbefore();
 		IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
 		store.setValue(PreferenceConstants.CODEGEN_ADD_COMMENTS, false);
 		fDescriptor= RefactoringSignatureDescriptorFactory.createIntroduceParameterObjectDescriptor();
 		fPack= getPackageP();
 	}

 	protected IMethod setupMethod() throws Exception, JavaModelException {
 		ICompilationUnit cu= createCUfromTestFile(fPack, getCUName(false), true);
 		IType type= cu.getType(getCUName(false));
 		assertNotNull(type);
 		assertTrue(type.exists());
 		IMethod fooMethod= null;
 		for (IMethod method : type.getMethods()) {
 			if ("foo".equals(method.getElementName())) {
 				fooMethod= method;
 			}
 		}
 		assertNotNull(fooMethod);
 		assertTrue(fooMethod.exists());
 		return fooMethod;
 	}

 	private void setupPackage(String inputPackage) throws JavaModelException {
 		fPack= getRoot().createPackageFragment(inputPackage,true,null);
 	}

 	@Override
 	public void genericafter() throws Exception {
 		super.genericafter();
 		fDescriptor=null;
 		fPack=null;
 		IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
 		store.setToDefault(PreferenceConstants.CODEGEN_ADD_COMMENTS);
 	}

 	@Test
 	public void testBodyUpdate() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testDefaultPackagePoint() throws Exception {
 		setupPackage("");
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setClassName("ArrayList");
 		fDescriptor.setTopLevel(false);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testDefaultPackagePointTopLevel() throws Exception {
 		setupPackage("");
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setClassName("ArrayList");
 		fDescriptor.setTopLevel(true);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testDelegateCreation() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setGetters(true);
 		fDescriptor.setTopLevel(false);
 		fDescriptor.setSetters(true);
 		fDescriptor.setDelegate(true);

 		Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 		parameters[1].setFieldName("newA");
 		parameters[2].setFieldName("newB");
 		parameters[3].setFieldName("newD");
 		fDescriptor.setParameters(parameters);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testDelegateCreationCodeStyle() throws Exception {
 		IJavaProject javaProject= getRoot().getJavaProject();
 		Map<String, String> originalOptions= javaProject.getOptions(false);
 		try {
 			Hashtable<String, String> newOptions= new Hashtable<>();
 			newOptions.put(JavaCore.CODEASSIST_FIELD_PREFIXES, "f");
 			newOptions.put(JavaCore.CODEASSIST_FIELD_SUFFIXES, "G");
 			javaProject.setOptions(newOptions);

 			fDescriptor.setMethod(setupMethod());
 			fDescriptor.setGetters(true);
 			fDescriptor.setSetters(true);
 			fDescriptor.setDelegate(true);
 			fDescriptor.setTopLevel(false);

 			Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 			parameters[3].setFieldName("newD");
 			fDescriptor.setParameters(parameters);
 			runRefactoring(false, true);
 		} finally {
 			javaProject.setOptions(originalOptions);
 		}
 	}

 	@Test
 	public void testImportAddEnclosing() throws Exception {
 		createCaller(null);
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);

 		Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 		parameters[1].setFieldName("permissions");
 		fDescriptor.setParameters(parameters);
 		runRefactoring(false, true);
 		checkCaller(null);
 	}

 	@Test
 	public void testImportAddTopLevel() throws Exception {
 		createCaller(DEFAULT_SUB_DIR);
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(true);
 		fDescriptor.setClassName("TestImportAddTopLevelParameter");
 		fDescriptor.setPackageName("p.parameters");
 		runRefactoring(false, true);
 		checkCaller(DEFAULT_SUB_DIR);
 	}

 	@Test
 	public void testImportNameSimple() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setClassName("ArrayList");
 		fDescriptor.setParameterName("p");
 		fDescriptor.setTopLevel(true);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testInlineRename() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);

 		Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 		parameters[3].setCreateField(false);
 		fDescriptor.setParameters(parameters);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testSubclassInCU() throws Exception {
 		// test for https://bugs.eclipse.org/bugs/show_bug.cgi?id=259095
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(true);
 		fDescriptor.setClassName("FooParameter");

 		runRefactoring(false, true);
 	}

 	@Test
 	public void testInterfaceMethod() throws Exception {
 		createAdditionalFile(null, "TestInterfaceMethod2Impl");
 		createAdditionalFile(null, "ITestInterfaceMethod");
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(true);
 		fDescriptor.setClassName("FooParameter");
 		runRefactoring(true, false);
 		runRefactoring(true, true);
 		checkAdditionalFile(null, "ITestInterfaceMethod");
 		checkAdditionalFile(null, "TestInterfaceMethod2Impl");
 	}

 	@Test
 	public void testRecursiveReordered() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);

 		Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 		Parameter temp=parameters[1];
 		parameters[1]=parameters[2];
 		parameters[2]=temp;
 		fDescriptor.setParameters(parameters);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testRecursiveSimple() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testRecursiveSimpleReordered() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);
 		runRefactoring(false, true);
 	}


 	@Test
 	public void testReorderGetter() throws Exception{
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setGetters(true);
 		fDescriptor.setTopLevel(false);
 		Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 		Parameter temp=parameters[3];
 		parameters[3]=parameters[2];
 		parameters[2]=parameters[1];
 		parameters[1]=temp;
 		fDescriptor.setParameters(parameters);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testSimpleEnclosing() throws Exception{
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testSimpleEnclosingCodeStyle() throws Exception {
 		IJavaProject javaProject= getRoot().getJavaProject();
 		Map<String, String> originalOptions= javaProject.getOptions(false);
 		try {
 			Hashtable<String, String> newOptions= new Hashtable<>();
 			newOptions.put(JavaCore.CODEASSIST_FIELD_PREFIXES, "f");
 			newOptions.put(JavaCore.CODEASSIST_FIELD_SUFFIXES, "G");
 			newOptions.put(JavaCore.CODEASSIST_ARGUMENT_PREFIXES, "a");
 			newOptions.put(JavaCore.CODEASSIST_ARGUMENT_SUFFIXES, "M");
 			javaProject.setOptions(newOptions);

 			fDescriptor.setMethod(setupMethod());
 			fDescriptor.setTopLevel(false);
 			runRefactoring(false, true);
 		} finally {
 			javaProject.setOptions(originalOptions);
 		}
 	}

 	@Test
 	public void testVarArgsNotReordered() throws Exception{
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testVarArgsReordered() throws Exception{
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);

 		Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
 		Parameter temp=parameters[1];
 		parameters[1]=parameters[2];
 		parameters[2]=temp;
 		fDescriptor.setParameters(parameters);
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testMethodTypeParamArgs() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(false);
 		fDescriptor.setClassName("FooParameter");
 		runRefactoring(false, true);
 	}

 	@Test
 	public void testMethodTypeParamArgsTopLevel() throws Exception {
 		fDescriptor.setMethod(setupMethod());
 		fDescriptor.setTopLevel(true);
 		fDescriptor.setClassName("FooParameter");
 		runRefactoring(false, true);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2005, 2020 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	* Samrat Dhillon samrat.dhillon@gmail.com https://bugs.eclipse.org/bugs/show_bug.cgi?id=395558 and https://bugs.eclipse.org/bugs/show_bug.cgi?id=395561
	*******************************************************************************/
	package org.eclipse.jdt.ui.tests.refactoring;

	import static org.junit.Assert.assertNotNull;
	import static org.junit.Assert.assertNull;
	import static org.junit.Assert.assertTrue;

	import java.io.IOException;
	import java.util.Hashtable;
	import java.util.Map;

	import org.junit.Test;

	import org.eclipse.core.runtime.NullProgressMonitor;

	import org.eclipse.jface.preference.IPreferenceStore;

	import org.eclipse.ltk.core.refactoring.RefactoringStatus;
	import org.eclipse.ltk.core.refactoring.RefactoringStatusEntry;

	import org.eclipse.jdt.core.ICompilationUnit;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jdt.core.IMethod;
	import org.eclipse.jdt.core.IPackageFragment;
	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.JavaCore;
	import org.eclipse.jdt.core.JavaModelException;
	import org.eclipse.jdt.core.refactoring.descriptors.IntroduceParameterObjectDescriptor;
	import org.eclipse.jdt.core.refactoring.descriptors.IntroduceParameterObjectDescriptor.Parameter;

	import org.eclipse.jdt.internal.core.refactoring.descriptors.RefactoringSignatureDescriptorFactory;
	import org.eclipse.jdt.internal.corext.refactoring.base.RefactoringStatusCodes;

	import org.eclipse.jdt.ui.PreferenceConstants;
	import org.eclipse.jdt.ui.tests.refactoring.rules.RefactoringTestSetup;

	import org.eclipse.jdt.internal.ui.JavaPlugin;

	public class IntroduceParameterObjectTests extends GenericRefactoringTest {
	private static final String DEFAULT_SUB_DIR= "sub";
	private static final String REFACTORING_PATH= "IntroduceParameterObject/";

	private IPackageFragment fPack;
	protected IntroduceParameterObjectDescriptor fDescriptor;

	public IntroduceParameterObjectTests() {
	this.rts= new RefactoringTestSetup();
	}

	protected IntroduceParameterObjectTests(RefactoringTestSetup rts) {
	super(rts);
	}

	private void checkAdditionalFile(String subdir, String fileName) throws Exception, JavaModelException, IOException {
	IPackageFragment pack= getSubPackage(subdir);
	ICompilationUnit cu= pack.getCompilationUnit(fileName+".java");
	assertNotNull(cu);
	assertTrue(cu.getPath() + " does not exist", cu.exists());
	String actual= cu.getSource();
	String expected= getFileContents(getOutputTestFileName(fileName));
	assertEqualLines(expected, actual);
	}

	private void checkCaller(String subdir) throws Exception {
	checkAdditionalFile(subdir, getCUName(true));
	}

	private void createAdditionalFile(String subDir, String fileName) throws Exception {
	IPackageFragment pack= getSubPackage(subDir);
	ICompilationUnit cu= createCUfromTestFile(pack, fileName, true);
	assertNotNull(cu);
	assertTrue(cu.exists());
	}

	private void createCaller(String subDir) throws Exception {
	createAdditionalFile(subDir, getCUName(true));
	}

	private String getCUFileName(boolean caller) {
	StringBuilder sb= new StringBuilder();
	sb.append(getCUName(caller));
	sb.append(".java");
	return sb.toString();
	}

	private String getCUName(boolean caller) {
	StringBuilder sb= new StringBuilder();
	sb.append(Character.toUpperCase(getName().charAt(0)) + getName().substring(1));
	if (caller)
	sb.append("Caller");
	return sb.toString();
	}

	@Override
	protected String getRefactoringPath() {
	return REFACTORING_PATH;
	}

	private IPackageFragment getSubPackage(String subDir) throws Exception {
	IPackageFragment pack= getPackageP();
	if (subDir != null) {
	String packageName= pack.getElementName() + "." + subDir;
	pack= getRoot().getPackageFragment(packageName);
	if (!pack.exists()) {
	IPackageFragment create= getRoot().createPackageFragment(packageName, true, new NullProgressMonitor());
	assertNotNull(create);
	assertTrue(create.exists());
	return create;
	}
	}
	return pack;
	}

	protected void runRefactoring(boolean expectError, boolean useSuggestedMethod) throws Exception {
	RefactoringStatus status= performRefactoring(fDescriptor);
	if (expectError) {
	assertNotNull(status);
	if (useSuggestedMethod){
	final RefactoringStatusEntry entry= status.getEntryMatchingSeverity(RefactoringStatus.FATAL);
	if (entry.getCode() == RefactoringStatusCodes.OVERRIDES_ANOTHER_METHOD \|\| entry.getCode() == RefactoringStatusCodes.METHOD_DECLARED_IN_INTERFACE) {
	final Object element= entry.getData();
	fDescriptor.setMethod((IMethod) element);
	status= performRefactoring(fDescriptor);
	}
	} else {
	return;
	}
	}
	assertNull(status+"",status);
	String expected= getFileContents(getOutputTestFileName(getCUName(false)));
	assertNotNull(expected);
	ICompilationUnit resultCU= fPack.getCompilationUnit(getCUFileName(false));
	assertNotNull(resultCU);
	assertTrue(resultCU.exists());
	String result= resultCU.getSource();
	assertNotNull(result);
	assertEqualLines(expected, result);
	if (fDescriptor.isTopLevel()){
	String packageName= fDescriptor.getPackageName();
	if (packageName!=null)
	fPack=getRoot().getPackageFragment(packageName);
	assertNotNull(fPack);
	String parameterClassFile= fDescriptor.getClassName()+".java";
	ICompilationUnit unit= fPack.getCompilationUnit(parameterClassFile);
	assertNotNull(unit);
	assertTrue(unit.exists());
	expected=getFileContents(getOutputTestFileName(fDescriptor.getClassName()));
	result=unit.getSource();
	assertNotNull(result);
	assertEqualLines(expected, result);
	}

	assertParticipant(fDescriptor.getMethod().getDeclaringType());
	}

	private void assertParticipant(IType typeOfMethod) throws JavaModelException {
	TestChangeMethodSignaturParticipant.testParticipant(typeOfMethod);
	}

	@Override
	public void genericbefore() throws Exception {
	super.genericbefore();
	IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
	store.setValue(PreferenceConstants.CODEGEN_ADD_COMMENTS, false);
	fDescriptor= RefactoringSignatureDescriptorFactory.createIntroduceParameterObjectDescriptor();
	fPack= getPackageP();
	}

	protected IMethod setupMethod() throws Exception, JavaModelException {
	ICompilationUnit cu= createCUfromTestFile(fPack, getCUName(false), true);
	IType type= cu.getType(getCUName(false));
	assertNotNull(type);
	assertTrue(type.exists());
	IMethod fooMethod= null;
	for (IMethod method : type.getMethods()) {
	if ("foo".equals(method.getElementName())) {
	fooMethod= method;
	}
	}
	assertNotNull(fooMethod);
	assertTrue(fooMethod.exists());
	return fooMethod;
	}

	private void setupPackage(String inputPackage) throws JavaModelException {
	fPack= getRoot().createPackageFragment(inputPackage,true,null);
	}

	@Override
	public void genericafter() throws Exception {
	super.genericafter();
	fDescriptor=null;
	fPack=null;
	IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
	store.setToDefault(PreferenceConstants.CODEGEN_ADD_COMMENTS);
	}

	@Test
	public void testBodyUpdate() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	}

	@Test
	public void testDefaultPackagePoint() throws Exception {
	setupPackage("");
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setClassName("ArrayList");
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	}

	@Test
	public void testDefaultPackagePointTopLevel() throws Exception {
	setupPackage("");
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setClassName("ArrayList");
	fDescriptor.setTopLevel(true);
	runRefactoring(false, true);
	}

	@Test
	public void testDelegateCreation() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setGetters(true);
	fDescriptor.setTopLevel(false);
	fDescriptor.setSetters(true);
	fDescriptor.setDelegate(true);

	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	parameters[1].setFieldName("newA");
	parameters[2].setFieldName("newB");
	parameters[3].setFieldName("newD");
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	}

	@Test
	public void testDelegateCreationCodeStyle() throws Exception {
	IJavaProject javaProject= getRoot().getJavaProject();
	Map<String, String> originalOptions= javaProject.getOptions(false);
	try {
	Hashtable<String, String> newOptions= new Hashtable<>();
	newOptions.put(JavaCore.CODEASSIST_FIELD_PREFIXES, "f");
	newOptions.put(JavaCore.CODEASSIST_FIELD_SUFFIXES, "G");
	javaProject.setOptions(newOptions);

	fDescriptor.setMethod(setupMethod());
	fDescriptor.setGetters(true);
	fDescriptor.setSetters(true);
	fDescriptor.setDelegate(true);
	fDescriptor.setTopLevel(false);

	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	parameters[3].setFieldName("newD");
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	} finally {
	javaProject.setOptions(originalOptions);
	}
	}

	@Test
	public void testImportAddEnclosing() throws Exception {
	createCaller(null);
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);

	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	parameters[1].setFieldName("permissions");
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	checkCaller(null);
	}

	@Test
	public void testImportAddTopLevel() throws Exception {
	createCaller(DEFAULT_SUB_DIR);
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(true);
	fDescriptor.setClassName("TestImportAddTopLevelParameter");
	fDescriptor.setPackageName("p.parameters");
	runRefactoring(false, true);
	checkCaller(DEFAULT_SUB_DIR);
	}

	@Test
	public void testImportNameSimple() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setClassName("ArrayList");
	fDescriptor.setParameterName("p");
	fDescriptor.setTopLevel(true);
	runRefactoring(false, true);
	}

	@Test
	public void testInlineRename() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);

	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	parameters[3].setCreateField(false);
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	}

	@Test
	public void testSubclassInCU() throws Exception {
	// test for https://bugs.eclipse.org/bugs/show_bug.cgi?id=259095
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(true);
	fDescriptor.setClassName("FooParameter");

	runRefactoring(false, true);
	}

	@Test
	public void testInterfaceMethod() throws Exception {
	createAdditionalFile(null, "TestInterfaceMethod2Impl");
	createAdditionalFile(null, "ITestInterfaceMethod");
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(true);
	fDescriptor.setClassName("FooParameter");
	runRefactoring(true, false);
	runRefactoring(true, true);
	checkAdditionalFile(null, "ITestInterfaceMethod");
	checkAdditionalFile(null, "TestInterfaceMethod2Impl");
	}

	@Test
	public void testRecursiveReordered() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);

	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	Parameter temp=parameters[1];
	parameters[1]=parameters[2];
	parameters[2]=temp;
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	}

	@Test
	public void testRecursiveSimple() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	}

	@Test
	public void testRecursiveSimpleReordered() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	}


	@Test
	public void testReorderGetter() throws Exception{
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setGetters(true);
	fDescriptor.setTopLevel(false);
	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	Parameter temp=parameters[3];
	parameters[3]=parameters[2];
	parameters[2]=parameters[1];
	parameters[1]=temp;
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	}

	@Test
	public void testSimpleEnclosing() throws Exception{
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	}

	@Test
	public void testSimpleEnclosingCodeStyle() throws Exception {
	IJavaProject javaProject= getRoot().getJavaProject();
	Map<String, String> originalOptions= javaProject.getOptions(false);
	try {
	Hashtable<String, String> newOptions= new Hashtable<>();
	newOptions.put(JavaCore.CODEASSIST_FIELD_PREFIXES, "f");
	newOptions.put(JavaCore.CODEASSIST_FIELD_SUFFIXES, "G");
	newOptions.put(JavaCore.CODEASSIST_ARGUMENT_PREFIXES, "a");
	newOptions.put(JavaCore.CODEASSIST_ARGUMENT_SUFFIXES, "M");
	javaProject.setOptions(newOptions);

	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	} finally {
	javaProject.setOptions(originalOptions);
	}
	}

	@Test
	public void testVarArgsNotReordered() throws Exception{
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	runRefactoring(false, true);
	}

	@Test
	public void testVarArgsReordered() throws Exception{
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);

	Parameter[] parameters= IntroduceParameterObjectDescriptor.createParameters(fDescriptor.getMethod());
	Parameter temp=parameters[1];
	parameters[1]=parameters[2];
	parameters[2]=temp;
	fDescriptor.setParameters(parameters);
	runRefactoring(false, true);
	}

	@Test
	public void testMethodTypeParamArgs() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(false);
	fDescriptor.setClassName("FooParameter");
	runRefactoring(false, true);
	}

	@Test
	public void testMethodTypeParamArgsTopLevel() throws Exception {
	fDescriptor.setMethod(setupMethod());
	fDescriptor.setTopLevel(true);
	fDescriptor.setClassName("FooParameter");
	runRefactoring(false, true);
	}
	}