TestUtils.java

/*
 *
 * Copyright (c) 2010 ForgeRock Inc. All Rights Reserved
 *
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License). You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the License at
 * http://www.opensource.org/licenses/cddl1.php or
 * OpenIDM/legal/CDDLv1.0.txt
 * See the License for the specific language governing
 * permission and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at OpenIDM/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted 2010 [name of copyright owner]"
 *
 * Portions Copyrighted 2011 Viliam Repan (lazyman)
 *
 * $Id$
 */
package com.evolveum.polygon.csvfile.util;

import java.io.*;
import java.net.URISyntaxException;
import java.net.URL;
import org.testng.Assert;

/**
 *
 * @author Viliam Repan (lazyman)
 */
public class TestUtils {

    public static File getTestFile(String name) throws IOException, URISyntaxException {
        Assert.assertNotNull(name);
        URL filesURL = TestUtils.class.getResource("/files/");
        Assert.assertNotNull(filesURL);
        return new File(filesURL.toURI().resolve(name));
    }

    public static String compareFiles(File file1, File file2) throws IOException {
        BufferedReader reader1 = createReader(file1);
        BufferedReader reader2 = createReader(file2);

        String retVal = null;
        try {
            String line1 = null;
            String line2 = null;
            while (true) {
                line1 = reader1.readLine();
                line2 = reader2.readLine();

                boolean equal = line1 == null ? line2 == null : line1.equals(line2);
                if (!equal) {
                    retVal = "'" + line1 + "'<>'" + line2 + "'";
                    break;
                }

                if (line1 == null) {
                    break;
                }
            }
        }
        finally {
            if (reader1 != null) {
                reader1.close();
            }
            if (reader2 != null) {
                reader2.close();
            }
        }

        return retVal;
    }

    private static BufferedReader createReader(File file) throws IOException {
        FileInputStream fis = new FileInputStream(file);
        InputStreamReader in = new InputStreamReader(fis, "utf-8");
        return new BufferedReader(in);
    }
}