org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/MarkerResolutionTest.java

package org.eclipse.jdt.ui.tests.quickfix;

import java.util.Arrays;
import java.util.Hashtable;

import junit.framework.Test;
import junit.framework.TestSuite;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.contentassist.ICompletionProposal;

import org.eclipse.ui.IEditorPart;

import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;

import org.eclipse.jdt.testplugin.JavaProjectHelper;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jdt.ui.PreferenceConstants;

import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
import org.eclipse.jdt.internal.ui.text.correction.JavaCorrectionProcessor;

public class MarkerResolutionTest extends QuickFixTest {
	
	private static final Class THIS= MarkerResolutionTest.class;
	
	private IJavaProject fJProject1;
	private IPackageFragmentRoot fSourceFolder;

	public MarkerResolutionTest(String name) {
		super(name);
	}

	public static Test suite() {
		if (true) {
			return new TestSuite(THIS);
		} else {
			TestSuite suite= new TestSuite();
			suite.addTest(new MarkerResolutionTest("testQuickFixAfterModification"));
			return suite;
		}
	}


	protected void setUp() throws Exception {
		Hashtable options= JavaCore.getDefaultOptions();
		options.put(JavaCore.FORMATTER_TAB_CHAR, JavaCore.SPACE);
		options.put(JavaCore.FORMATTER_TAB_SIZE, "4");
		JavaCore.setOptions(options);			

		IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
		store.setValue(PreferenceConstants.CODEGEN__FILE_COMMENTS, false);
		store.setValue(PreferenceConstants.CODEGEN__JAVADOC_STUBS, false);
		
		fJProject1= JavaProjectHelper.createJavaProject("TestProject1", "bin");
		assertTrue("rt not found", JavaProjectHelper.addRTJar(fJProject1) != null);

		fSourceFolder= JavaProjectHelper.addSourceContainer(fJProject1, "src");
	}


	protected void tearDown() throws Exception {
		JavaProjectHelper.delete(fJProject1);
	}


	private IMarker createMarker(ICompilationUnit cu, int line, int offset, int len) throws CoreException, BadLocationException {
		IFile file= (IFile) ((ICompilationUnit) cu).getResource();
		IMarker marker= file.createMarker("org.eclipse.jdt.ui.tests.testmarker");
		marker.setAttribute(IMarker.LOCATION, cu.getElementName());
		marker.setAttribute(IMarker.MESSAGE, "Test marker");
		marker.setAttribute(IMarker.SEVERITY, IMarker.SEVERITY_ERROR);
		marker.setAttribute(IMarker.LINE_NUMBER, line);
		marker.setAttribute(IMarker.CHAR_START, offset);
		marker.setAttribute(IMarker.CHAR_END, offset + len);
		return marker;
	}

	
	public void testQuickFix() throws Exception {
		IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("import java.util.Vector;\n");
		buf.append("public class E {\n");
		buf.append("    void foo(Vector vec) {\n");
		buf.append("        goo(true);\n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("E.java", buf.toString(), false, null);
		
		createMarker(cu, 0, 0, 7);
		
		IEditorPart part= EditorUtility.openInEditor(cu);
		
		try {
			JavaCorrectionProcessor processor= new JavaCorrectionProcessor(part);
			ICompletionProposal[] proposals= processor.computeCompletionProposals(null, 0);
			
			assertNumberOf("proposals", proposals.length, 1);
			assertCorrectLabels(Arrays.asList(proposals));
			
			IDocument doc= JavaUI.getDocumentProvider().getDocument(part.getEditorInput());
			
			proposals[0].apply(doc);
			
			buf= new StringBuffer();
			buf.append("PACKAGE test1;\n");
			buf.append("import java.util.Vector;\n");
			buf.append("public class E {\n");
			buf.append("    void foo(Vector vec) {\n");
			buf.append("        goo(true);\n");
			buf.append("    }\n");
			buf.append("}\n");
			assertEqualString(doc.get(), buf.toString());
		} finally {
			JavaPlugin.getActivePage().closeAllEditors(false);
		}
	}
	
	public void testQuickFixAfterModification() throws Exception {
		IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("import java.util.Vector;\n");
		buf.append("public class E {\n");
		buf.append("    void foo(Vector vec) {\n");
		buf.append("        goo(true);\n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu= pack1.createCompilationUnit("E.java", buf.toString(), false, null);
		
		int markerPos= 8;
		createMarker(cu, 0, markerPos, 5);
		
		IEditorPart part= EditorUtility.openInEditor(cu);
		try {
			IDocument doc= JavaUI.getDocumentProvider().getDocument(part.getEditorInput());
			doc.replace(0, 0, "\n"); // insert new line
			
			JavaCorrectionProcessor processor= new JavaCorrectionProcessor(part);
			ICompletionProposal[] proposals= processor.computeCompletionProposals(null, markerPos + 1);
			
			assertNumberOf("proposals", proposals.length, 1);
			assertCorrectLabels(Arrays.asList(proposals));	
			
			proposals[0].apply(doc);
			
			buf= new StringBuffer();
			buf.append("\n");		
			buf.append("package TEST1;\n");
			buf.append("import java.util.Vector;\n");
			buf.append("public class E {\n");
			buf.append("    void foo(Vector vec) {\n");
			buf.append("        goo(true);\n");
			buf.append("    }\n");
			buf.append("}\n");
			assertEqualString(doc.get(), buf.toString());
		} finally {
			JavaPlugin.getActivePage().closeAllEditors(false);
		}
	}	
	
}