package org.apache.log4j.config;

import java.io.File;
import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache license, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the license for the specific language governing permissions and
 * limitations under the license.
 */

@RunWith(Parameterized.class)
public abstract class AbstractLog4j1ConfigurationConverterTest {

    private static String outputFile = "target/log4j1-log4j2.txt";

    protected static List<Path> getPaths(final String root) throws IOException {
        final List<Path> paths = new ArrayList<>();
        Files.walkFileTree(Paths.get(root), new SimpleFileVisitor<Path>() {
            @Override
            public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) throws IOException {
                paths.add(file.toAbsolutePath());
                return FileVisitResult.CONTINUE;
            }
        });
        return paths;
    }

    private final Path pathIn;
    private final Path pathOut;

    public AbstractLog4j1ConfigurationConverterTest(final Path path) {
        super();
        this.pathIn = path;
        File file = new File(outputFile);
        this.pathOut = file.toPath();
    }

    @Test
    public void test() throws IOException {
        final Path tempFile = Files.createTempFile("log4j", ".xml");
        try {
            final Log4j1ConfigurationConverter.CommandLineArguments cla = new Log4j1ConfigurationConverter.CommandLineArguments();
            cla.setPathIn(pathIn);
            cla.setPathOut(tempFile);
            Log4j1ConfigurationConverter.run(cla);
        } finally {
            Files.deleteIfExists(tempFile);
        }
    }
}

package org.apache.log4j.config;

import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.List;

import org.junit.After;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache license, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the license for the specific language governing permissions and
 * limitations under the license.
 */

@RunWith(Parameterized.class)
public abstract class AbstractLog4j1ConfigurationConverterTest {

    private static String outputFile = "target/log4j1-log4j2.txt";

    protected static List<Path> getPaths(final String root) throws IOException {
        final List<Path> paths = new ArrayList<>();
        Files.walkFileTree(Paths.get(root), new SimpleFileVisitor<Path>() {
            @Override
            public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) throws IOException {
                paths.add(file.toAbsolutePath());
                return FileVisitResult.CONTINUE;
            }
        });
        return paths;
    }

    private final Path pathIn;
    private final Path pathOut;

    public AbstractLog4j1ConfigurationConverterTest(final Path path) {
        super();
        this.pathIn = path;
        this.pathOut = Paths.get(outputFile);
    }

    @After
    public void tearDown() throws IOException {
        Files.deleteIfExists(pathOut);
    }
    
    @Test
    public void test() {
        final Log4j1ConfigurationConverter.CommandLineArguments cla = new Log4j1ConfigurationConverter.CommandLineArguments();
        cla.setPathIn(pathIn);
        cla.setPathOut(pathOut);
        Log4j1ConfigurationConverter.run(cla);
    }
}

Delete temp test file.