Java tutorial
/** * Copyright (c) 2006-2007 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 - Initial API and implementation */ package org.eclipse.emf.test.tools.merger.facade; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertFalse; import static org.junit.Assert.assertTrue; import java.io.File; import java.util.Hashtable; import org.eclipse.emf.codegen.merge.java.facade.FacadeHelper; import org.eclipse.emf.codegen.merge.java.facade.JCompilationUnit; import org.eclipse.emf.codegen.merge.java.facade.JNode; import org.eclipse.emf.test.common.TestUtil; import org.eclipse.emf.test.tools.AllSuites; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants; import org.junit.Before; public class BaseFacadeTest { protected String name; protected String baseDataDirectory = "data" + File.separator + "facade.ast"; protected String testDirectoryName = getClass().getSimpleName(); protected String compilationUnitFileName = "Source.java"; protected FacadeHelper facadeHelper; protected File compilationUnitFile; protected JCompilationUnit compilationUnit; protected static enum Operation { ADD, REMOVE } /** * Initializes attributes from another test. * * @param anotherTest */ public BaseFacadeTest(BaseFacadeTest anotherTest) { this.facadeHelper = anotherTest.facadeHelper; this.compilationUnit = anotherTest.compilationUnit; } public BaseFacadeTest() { super(); } public String getName() { return name; } public void setName(String name) { this.name = name; } @Before public void setUp() throws Exception { adjustJavaCoreOptions(); facadeHelper = instanciateFacadeHelper(); File dataDirectory = new File(TestUtil.getPluginDirectory(AllSuites.PLUGIN_ID), baseDataDirectory); assertTrue("Directory " + dataDirectory.getAbsolutePath() + " can not be read.", dataDirectory.isDirectory()); File testDirectory = new File(dataDirectory, testDirectoryName); assertTrue("Directory " + testDirectory.getAbsolutePath() + " can not be read.", testDirectory.isDirectory()); compilationUnitFile = new File(testDirectory, compilationUnitFileName); assertTrue("File " + compilationUnitFile + " can not be read.", compilationUnitFile.isFile()); String content = TestUtil.readFile(compilationUnitFile, false); compilationUnit = facadeHelper.createCompilationUnit(compilationUnitFile.getName(), content); } protected FacadeHelper instanciateFacadeHelper() { return new org.eclipse.emf.codegen.merge.java.facade.ast.ASTFacadeHelper(); } @SuppressWarnings({ "unchecked", "rawtypes" }) protected void adjustJavaCoreOptions() { Hashtable options = JavaCore.getDefaultOptions(); options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_5); options.put(DefaultCodeFormatterConstants.FORMATTER_TAB_CHAR, JavaCore.SPACE); options.put(DefaultCodeFormatterConstants.FORMATTER_TAB_SIZE, "2"); options.put(DefaultCodeFormatterConstants.FORMATTER_INDENTATION_SIZE, "2"); JavaCore.setOptions(options); } protected void rewriteAndCompare(String expectedOutputFileName) { File outputFile = new File(compilationUnitFile.getParentFile(), expectedOutputFileName + ".java"); assertTrue("Output file " + outputFile.getAbsolutePath() + " can not be read.", outputFile.isFile()); String content = TestUtil.readFile(outputFile, false); assertEquals(content, compilationUnit.getContents()); } protected void testNoChildren(JNode parentNode, int noChildren) { testNoChildren(parentNode, noChildren, JNode.class); } protected void testNoChildren(JNode parentNode, int noChildren, Class<? extends JNode> childrenClass) { assertEquals("Number of children of " + parentNode.getClass().getSimpleName() + " does not match", noChildren, facadeHelper.getChildren(parentNode, childrenClass).size()); } protected int updateNoChildren(JNode parentNode, JNode node, Operation operation, int noChildrenBefore) { return updateNoChildren(parentNode, node, operation, noChildrenBefore, JNode.class); } protected int updateNoChildren(JNode parentNode, JNode node, Operation operation, int noChildrenBefore, Class<? extends JNode> childrenClass) { switch (operation) { case ADD: noChildrenBefore++; assertEquals("Number of children after adding " + node.getClass().getSimpleName() + " does not match", noChildrenBefore, facadeHelper.getChildren(parentNode, childrenClass).size()); assertTrue("Children must contain added " + node.getClass().getSimpleName(), facadeHelper.getChildren(parentNode, childrenClass).contains(node)); break; case REMOVE: noChildrenBefore--; assertEquals("Number of children after removing " + node.getClass().getSimpleName() + " does not match", noChildrenBefore, facadeHelper.getChildren(parentNode, childrenClass).size()); assertFalse("Children must node contain removed " + node.getClass().getSimpleName(), facadeHelper.getChildren(parentNode, childrenClass).contains(node)); } return noChildrenBefore; } protected void removeAllChildren(JNode node, int noChildrenBefore) { removeAllChildren(node, noChildrenBefore, JNode.class); } protected void removeAllChildren(JNode node, int noChildrenBefore, Class<? extends JNode> childrenClass) { assertEquals("Number of children of " + node.getClass().getSimpleName() + " does not match", noChildrenBefore, facadeHelper.getChildren(node, childrenClass).size()); int n = facadeHelper.getChildren(node, childrenClass).size(); for (JNode child : facadeHelper.getChildren(node, childrenClass)) { assertTrue(facadeHelper.remove(child)); assertFalse(facadeHelper.remove(child)); n = updateNoChildren(node, child, Operation.REMOVE, n, childrenClass); } assertEquals( "Number of children of " + node.getClass().getSimpleName() + " after removing children does not match", 0, facadeHelper.getChildren(node, childrenClass).size()); } protected int insertSibling(JNode node, JNode newSibling, boolean before, int noChildrenBefore) { JNode parent = node.getParent(); assertTrue("insertSibling() on " + newSibling.getClass().getSimpleName() + " returned false", facadeHelper.insertSibling(node, newSibling, before)); assertFalse("Repeated insertSibling() on " + newSibling.getClass().getSimpleName() + " returned true", facadeHelper.insertSibling(node, newSibling, before)); return updateNoChildren(parent, newSibling, Operation.ADD, noChildrenBefore); } protected int addChild(JNode node, JNode child, int noChildrenBefore) { assertTrue("addChild() on " + child.getClass().getSimpleName() + " returned false", facadeHelper.addChild(node, child)); assertFalse("Repeated addChild() on " + child.getClass().getSimpleName() + " returned true", facadeHelper.addChild(node, child)); return updateNoChildren(node, child, Operation.ADD, noChildrenBefore); } protected int remove(JNode node, int noChildrenBefore) { JNode parent = node.getParent(); assertTrue("remove() on " + node.getClass().getSimpleName() + " returned false", facadeHelper.remove(node)); assertFalse("Repeated remove() on " + node.getClass().getSimpleName() + " returned true", facadeHelper.remove(node)); return updateNoChildren(parent, node, Operation.REMOVE, noChildrenBefore); } }