Attachment 164583 Details for Bug 308886 – JUnit Test to reproduce the bug

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JUnit Test to reproduce the bug

IfElseFailureTest.java (text/plain), 4.04 KB, created by David Schuler

on 2010-04-12 12:22:57 EDT

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Creator: David Schuler

Created: 2010-04-12 12:22:57 EDT

Size: 4.04 KB

patch

obsolete

>package test;
>
>import static org.junit.Assert.*;
>
>import java.util.ArrayList;
>import java.util.List;
>
>import org.eclipse.core.runtime.IProgressMonitor;
>import org.eclipse.jdt.core.dom.AST;
>import org.eclipse.jdt.core.dom.ASTNode;
>import org.eclipse.jdt.core.dom.ASTParser;
>import org.eclipse.jdt.core.dom.ASTVisitor;
>import org.eclipse.jdt.core.dom.Block;
>import org.eclipse.jdt.core.dom.CompilationUnit;
>import org.eclipse.jdt.core.dom.ExpressionStatement;
>import org.eclipse.jdt.core.dom.IfStatement;
>import org.eclipse.jdt.core.dom.MethodInvocation;
>import org.eclipse.jdt.core.dom.QualifiedName;
>import org.eclipse.jdt.core.dom.Statement;
>import org.eclipse.jdt.core.dom.StringLiteral;
>import org.eclipse.jface.text.BadLocationException;
>import org.eclipse.jface.text.Document;
>import org.eclipse.text.edits.MalformedTreeException;
>import org.eclipse.text.edits.TextEdit;
>import org.junit.Test;
>
>public class IfElseFailureTest {
>
>	public static class MyASTVisitor extends ASTVisitor {
>
>		@Override
>		public boolean visit(IfStatement node) {
>			Statement thenStatement = node.getThenStatement();
>			Statement elseStatement = node.getElseStatement();
>			if (elseStatement != null) {
>				Block transformToBlock = transformToBlock(node, elseStatement);
>				node.setElseStatement(transformToBlock);
>			}
>			if (!(thenStatement instanceof Block)) {
>				Block block = transformToBlock(node, thenStatement);
>				node.setThenStatement(block);
>			}
>			return super.visit(node);
>		}
>
>		@SuppressWarnings("unchecked")
>		private Block transformToBlock(Statement parent, Statement child) {
>			AST ast = parent.getAST();
>			Block block = ast.newBlock();
>			ASTNode copySubtree = ASTNode.copySubtree(block.getAST(), child);
>			block.statements().add(copySubtree);
>			return block;
>		}
>
>		@Override
>		public boolean visit(Block node) {
>			addCoverageCalls(node.statements(), node);
>			return true;
>		}
>
>		@SuppressWarnings("unchecked")
>		private void addCoverageCalls(List statements, ASTNode node) {
>			List<Statement> statementsCopy = new ArrayList<Statement>(
>					statements);
>			int count = 0;
>			for (Statement o : statementsCopy) {
>				ExpressionStatement coverageCalls = getCoverageCalls(node);
>				statements.add(count, coverageCalls);
>				count++;
>				count++;
>			}
>		}
>
>		@SuppressWarnings("unchecked")
>		private ExpressionStatement getCoverageCalls(ASTNode node) {
>			AST ast = node.getAST();
>			final MethodInvocation methodInvocation = ast.newMethodInvocation();
>			QualifiedName name = ast.newQualifiedName(ast
>					.newSimpleName("System"), ast.newSimpleName("out"));
>			methodInvocation.setExpression(name);
>			methodInvocation.setName(ast.newSimpleName("println"));
>			StringLiteral classNameLiteral = ast.newStringLiteral();
>			classNameLiteral.setLiteralValue("TEST");
>			methodInvocation.arguments().add(classNameLiteral);
>			return ast.newExpressionStatement(methodInvocation);
>		}
>
>	}
>
>	@Test
>	public void test1() throws MalformedTreeException, BadLocationException {
>		ASTParser parser = ASTParser.newParser(AST.JLS3);
>		parser.setKind(ASTParser.K_COMPILATION_UNIT);
>		String source = getSource();
>		parser.setSource(source.toCharArray());
>		parser.setResolveBindings(false);
>		final CompilationUnit compU = (CompilationUnit) parser
>				.createAST((IProgressMonitor) null);
>		final Document doc = new Document(source);
>		ASTVisitor visitor = new MyASTVisitor();
>		compU.recordModifications();
>		compU.accept(visitor);
>		TextEdit rewrite = compU.rewrite(doc, null);
>		rewrite.apply(doc);
>		String transformed = doc.get();
>		String rewriteString = transformed.toString();
>		int rewriteCount = rewriteString.split("TEST").length - 1;
>		// Expecting 5 occurrences of TEST in the resulting source code.
>		assertEquals(5, rewriteCount);
>		String compilationUnitString = compU.toString();
>		int compilationUnitCount = compilationUnitString.split("TEST").length - 1;
>		assertEquals(5, compilationUnitCount);
>	}
>
>	private String getSource() {
>
>		return "public class ElseIfNoBrace {" 
>		+ "public int method1(int x) {"
>		+ "  if (x > 5)" 
>		+ "    x *= 3;"
>		+ "  else if (x < 0)"
>		+ "    x += x;"
>		+ "  return x;" 
>		+ "}";
>	}
>}

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Attachments on bug 308886: 164583