ScannerTest.java

/*******************************************************************************
 * Copyright (c) 2005, 2007 committers of openArchitectureWare 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:
 *     committers of openArchitectureWare - initial API and implementation
 *******************************************************************************/

package org.eclipse.xtend.expression.parser;

import junit.framework.TestCase;

import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.RecognitionException;
import org.eclipse.internal.xtend.xtend.parser.XtendLexer;

/**
 * @author Sven Efftinge (http://www.efftinge.de)
 * @author Arno Haase
 */
public class ScannerTest extends TestCase {

    public XtendLexer scan(final String txt) {
        return new XtendLexer(new ANTLRStringStream(txt)) {
        	@Override
        	public void reportError(RecognitionException e) {
        		throw new RuntimeException(e);
        	}
        };
    }

    public final void testString() throws Exception {
        test("\"test\"");
        test("\"test\"");
        test("\"te\nst\"");
        test("\"te\\nst\"");
        test("'test'");
        test("'test'");
        test("'te\nst'");
        test("'te\\nst'");
        try {
            test("'unterminated");
            fail();
        } catch (final Exception e) {
            // expected
        }
    }
    
    public void testIdentifier() throws Exception {
    	System.out.println(scan("sortBy").nextToken().getType());
    	System.out.println(scan("^sortBy").nextToken().getType());
	}

    private void test(final String txt) throws Exception {
        assertEquals(txt, scan(txt).nextToken().getText());
    }
}