src/test/java/org/apache/maven/plugins/dependency/testUtils/DependencyTestUtils.java

package org.apache.maven.plugins.dependency.testUtils;

/* 
 * 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.    
 */

import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.HashMap;

import org.apache.maven.artifact.factory.ArtifactFactory;
import org.apache.maven.artifact.factory.DefaultArtifactFactory;
import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
import org.apache.maven.artifact.handler.manager.DefaultArtifactHandlerManager;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.plugin.testing.SilentLog;
import org.apache.maven.shared.model.fileset.FileSet;
import org.apache.maven.shared.model.fileset.util.FileSetManager;
import org.codehaus.plexus.util.ReflectionUtils;

public class DependencyTestUtils
{

    /**
     * Deletes a directory and its contents.
     *
     * @param dir {@link File} The base directory of the included and excluded files.
     * @throws IOException in case of an error. When a directory failed to get deleted.
     */
    public static void removeDirectory( File dir )
        throws IOException
    {
        if ( dir != null )
        {
            Log log = new SilentLog();
            FileSetManager fileSetManager = new FileSetManager( log, false );

            FileSet fs = new FileSet();
            fs.setDirectory( dir.getPath() );
            fs.addInclude( "**/**" );
            fileSetManager.delete( fs );

        }
    }

    public static ArtifactFactory getArtifactFactory()
        throws IllegalAccessException
    {
        ArtifactFactory artifactFactory;
        ArtifactHandlerManager manager = new DefaultArtifactHandlerManager();
        setVariableValueToObject( manager, "artifactHandlers", new HashMap<>() );

        artifactFactory = new DefaultArtifactFactory();
        setVariableValueToObject( artifactFactory, "artifactHandlerManager", manager );

        return artifactFactory;
    }

    /**
     * convenience method to set values to variables in objects that don't have setters
     *
     * @param object {@link Object}
     * @param variable the field name.
     * @param value The value to be set.
     * @throws IllegalAccessException in case of an error.
     */
    public static void setVariableValueToObject( Object object, String variable, Object value )
        throws IllegalAccessException
    {
        Field field = ReflectionUtils.getFieldByNameIncludingSuperclasses( variable, object.getClass() );

        field.setAccessible( true );

        field.set( object, value );
    }

    public static void setFileModifiedTime( File file )
        throws InterruptedException
    {
        Thread.sleep( 100 );
        // round down to the last second
        long time = System.currentTimeMillis();
        time = time - ( time % 1000 );
        assertTrue( "Updating last modification time of marker file " + file.getAbsolutePath()
            + " failed unexpectedly.", file.setLastModified( time ) );

        // wait at least a second for filesystems that only record to the
        // nearest second.
        Thread.sleep( 1000 );
    }

}