CheckEOLTests.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.test;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

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

/**
 * some stand-alone tests that make sure the CheckEOL code actually
 * works as expected
 */
public class CheckEOLTests extends TestCase {

    public static Test suite() {
        return new TestSuite(CheckEOLTests.class);
    }

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

    public void testStreamHasInvalidWinEOL() throws IOException {
        byte CR = CheckEOL.cr;
        byte LF = CheckEOL.lf;

        // invalid EOLs
        this.verifyInvalidWinEOL(new byte[] {CR});
        this.verifyInvalidWinEOL(new byte[] {LF});
        this.verifyInvalidWinEOL(new byte[] {LF, CR});
        this.verifyInvalidWinEOL(new byte[] {CR, CR, LF});
        this.verifyInvalidWinEOL(new byte[] {CR, LF, LF});
        this.verifyInvalidWinEOL(new byte[] {CR, LF, CR});

        // valid EOLs
        this.verifyValidWinEOL(new byte[] {});
        this.verifyValidWinEOL(new byte[] {CR, LF});
        this.verifyValidWinEOL(new byte[] {CR, LF, CR, LF});
        this.verifyValidWinEOL(new byte[] {CR, LF, 'a', CR, LF});
    }

    private void verifyInvalidWinEOL(byte[] bytes) throws IOException {
        assertTrue("Invalid EOL not detected", new CheckEOL().streamHasInvalidWinEOL(this.buildInputStream(bytes)));
    }

    private void verifyValidWinEOL(byte[] bytes) throws IOException {
        assertTrue("Invalid EOL wrongly detected", ! new CheckEOL().streamHasInvalidWinEOL(this.buildInputStream(bytes)));
    }

    private InputStream buildInputStream(byte[] bytes) {
        return new ByteArrayInputStream(bytes);
    }

}