maven-core/src/test/java/org/apache/maven/exception/DefaultExceptionHandlerTest.java

package org.apache.maven.exception;

/*
 * 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 java.io.IOException;
import java.net.ConnectException;

import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.MojoExecutionException;

import org.apache.maven.plugin.PluginContainerException;
import org.apache.maven.plugin.PluginExecutionException;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

/**
 * @author <a href="mailto:baerrach@apache.org">Barrie Treloar</a>
 */
public class DefaultExceptionHandlerTest
{
    /**
     * Running Maven under JDK7 may cause connection issues because IPv6 is used by default.
     * <p>
     * e.g running mvn site:run will cause Jetty to fail.
     * </p>
     * <p>
     * The resolution is to add -Djava.net.preferIPv4Stack=true to the command line as documented in
     * http://cwiki.apache.org/confluence/display/MAVEN/ConnectException
     * </p>
     */
    @Test
    public void testJdk7ipv6()
    {
        ConnectException connEx = new ConnectException( "Connection refused: connect" );
        IOException ioEx = new IOException( "Unable to establish loopback connection", connEx );
        MojoExecutionException mojoEx =
            new MojoExecutionException( "Error executing Jetty: Unable to establish loopback connection", ioEx );

        ExceptionHandler exceptionHandler = new DefaultExceptionHandler();
        ExceptionSummary exceptionSummary = exceptionHandler.handleException( mojoEx );

        String expectedReference = "http://cwiki.apache.org/confluence/display/MAVEN/ConnectException";
        assertEquals( expectedReference, exceptionSummary.getReference() );

    }

    @Test
    public void testHandleExceptionAetherClassNotFound()
    {
        Throwable cause2 = new NoClassDefFoundError( "org/sonatype/aether/RepositorySystem" );
        Plugin plugin = new Plugin();
        Exception cause = new PluginContainerException( plugin, null, null, cause2 );
        PluginDescriptor pluginDescriptor = new PluginDescriptor();
        MojoDescriptor mojoDescriptor = new MojoDescriptor();
        mojoDescriptor.setPluginDescriptor( pluginDescriptor );
        MojoExecution mojoExecution = new MojoExecution(mojoDescriptor);
        Throwable exception = new PluginExecutionException( mojoExecution, null, cause );

        DefaultExceptionHandler handler = new DefaultExceptionHandler();
        ExceptionSummary summary = handler.handleException( exception );

        String expectedReference = "http://cwiki.apache.org/confluence/display/MAVEN/AetherClassNotFound";
        assertEquals( expectedReference, summary.getReference() );
    }

    @Test
    public void testHandleExceptionNoClassDefFoundErrorNull()
    {
        Throwable cause2 = new NoClassDefFoundError();
        Plugin plugin = new Plugin();
        Exception cause = new PluginContainerException( plugin, null, null, cause2 );
        PluginDescriptor pluginDescriptor = new PluginDescriptor();
        MojoDescriptor mojoDescriptor = new MojoDescriptor();
        mojoDescriptor.setPluginDescriptor( pluginDescriptor );
        MojoExecution mojoExecution = new MojoExecution(mojoDescriptor);
        Throwable exception = new PluginExecutionException( mojoExecution, null, cause );

        DefaultExceptionHandler handler = new DefaultExceptionHandler();
        ExceptionSummary summary = handler.handleException( exception );

        String expectedReference = "http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException";
        assertEquals( expectedReference, summary.getReference() );
    }
}