Attachment 54367 Details for Bug 165525 – Test case illustrating the problem

Test case illustrating the problem

ASTEnumFieldsProblem.java (text/plain), 4.44 KB, created by Dmitry Denisov

on 2006-11-22 16:18:48 EST

(hide)

Description:

Filename:

MIME Type:

Creator: Dmitry Denisov

Created: 2006-11-22 16:18:48 EST

Size: 4.44 KB

patch

obsolete

>package org.eclipse.emf.test.tools.merger;
>
>import java.util.Hashtable;
>
>import junit.framework.TestCase;
>
>import org.eclipse.jdt.core.JavaCore;
>import org.eclipse.jdt.core.dom.AST;
>import org.eclipse.jdt.core.dom.ASTParser;
>import org.eclipse.jdt.core.dom.AbstractTypeDeclaration;
>import org.eclipse.jdt.core.dom.CompilationUnit;
>import org.eclipse.jdt.core.dom.FieldDeclaration;
>import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
>import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
>import org.eclipse.jdt.core.dom.rewrite.ListRewrite;
>import org.eclipse.jface.text.Document;
>import org.eclipse.text.edits.TextEdit;
>
>/**
> * Test that shows the difference in assigning line comments in enum and
> * class declarations.
> */
>public class ASTEnumFieldsProblem extends TestCase
>{
>  protected String enumSource =
>    "enum X\n" +
>    "{" +
>    "\tENUM_CONST_1; // line comment after ENUM_CONST_1\n" +
>    "\tString a; //$NON-NLS-1$\n" +
>    "\tString b; //$NON-NLS-2$\n" +
>    "}\n";
>    
>  protected String classSource = 
>    "class X\n" +
>    "{" +
>    "\tString a; //$NON-NLS-1$\n" +
>    "\tString b; //$NON-NLS-2$\n" +
>    "}\n";
>  
>  protected String expectedEnumSource =
>    "enum X\n" +
>    "{" +
>    "\tENUM_CONST_1; // line comment after ENUM_CONST_1\n" +
>    "\tString a; //$NON-NLS-1$\n" +
>    "\tString b; //$NON-NLS-2$\n" +    
>    "\tint MISSING;\n" +
>    "}\n";
>    
>  protected String expectedClassSource = 
>    "class X\n" +
>    "{" +
>    "\tString a; //$NON-NLS-1$\n" +
>    "\tString b; //$NON-NLS-2$\n" +
>    "\tint MISSING;\n" +    
>    "}\n";  
>  
>  protected CompilationUnit enumCompilationUnit;
>  protected CompilationUnit classCompilationUnit;
>  
>  @Override
>  protected void setUp() throws Exception
>  {
>    adjustCompilerOptions();
>    enumCompilationUnit = parse(enumSource);
>    classCompilationUnit = parse(classSource);    
>  }
>  
>  public void testReadEnumFieldDeclarations()
>  {
>    testReadFields(enumCompilationUnit, enumSource);
>  }
>
>  public void testReadClassFieldDeclarations()
>  {
>    testReadFields(classCompilationUnit, classSource);
>  }
>  
>  public void testAddEnumField() throws Exception
>  {
>    assertEquals(expectedEnumSource, testAddField(enumCompilationUnit, enumSource));
>  }
>  
>  public void testAddClassField() throws Exception
>  {
>    assertEquals(expectedClassSource, testAddField(classCompilationUnit, classSource));
>  }    
>  
>  protected void testReadFields(CompilationUnit cu, String source)
>  {
>    AbstractTypeDeclaration td = (AbstractTypeDeclaration) cu.types().get(0);
>
>    FieldDeclaration field1 = (FieldDeclaration) td.bodyDeclarations().get(0);
>    FieldDeclaration field2 = (FieldDeclaration) td.bodyDeclarations().get(1);    
>    
>    String field1Source = source.substring(cu.getExtendedStartPosition(field1), cu.getExtendedStartPosition(field1) + cu.getExtendedLength(field1));
>    String field2Source = source.substring(cu.getExtendedStartPosition(field2), cu.getExtendedStartPosition(field2) + cu.getExtendedLength(field2));
>    
>    assertEquals("String a; //$NON-NLS-1$", field1Source);
>    // this fails for enum since line comment is not a part of the last field
>    assertEquals("String b; //$NON-NLS-2$", field2Source);    
>  }
>  
>  protected String testAddField(CompilationUnit cu, String source) throws Exception
>  {
>    ASTRewrite rewriter = ASTRewrite.create(cu.getAST());
>    
>    AbstractTypeDeclaration td = (AbstractTypeDeclaration) cu.types().get(0);
>    
>    ListRewrite lrw = rewriter.getListRewrite(td, td.getBodyDeclarationsProperty());
>    
>    VariableDeclarationFragment newFragment = cu.getAST().newVariableDeclarationFragment(); 
>    FieldDeclaration newField = cu.getAST().newFieldDeclaration(newFragment);  
>
>    // for enum, new field is inserted before the line comment of the last field    
>    lrw.insertLast(newField, null);
>
>    Document doc = new Document(source);    
>    TextEdit edit = rewriter.rewriteAST(doc, null);
>    edit.apply(doc);
>    
>    return doc.get();
>  }
>  
>  protected CompilationUnit parse(String source)
>  {
>    ASTParser parser = ASTParser.newParser(AST.JLS3);
>    parser.setSource(source.toCharArray());
>    return (CompilationUnit) parser.createAST(null);    
>  }  
>  
>  protected void adjustCompilerOptions()
>  {
>    Hashtable options = JavaCore.getOptions();
>    options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_5);
>    JavaCore.setOptions(options);    
>  }  
>}

Actions: View

Attachments on bug 165525: 54367 | 54427 | 54468