ProjectInheritanceTest.java

package org.apache.maven.project.inheritance.t02;

/*
 * 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.File;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.maven.model.Build;
import org.apache.maven.model.MailingList;
import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.inheritance.AbstractProjectInheritanceTestCase;

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to the
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values
 * down in the lineage are bubbling up where they should.
 *
 * @author Jason van Zyl
 */
public class ProjectInheritanceTest
    extends AbstractProjectInheritanceTestCase
{
    // ----------------------------------------------------------------------
    //
    // p4 inherits from p3
    // p3 inherits from p2
    // p2 inherits from p1
    // p1 inherits from p0
    // p0 inhertis from super model
    //
    // or we can show it graphically as:
    //
    // p4 ---> p3 ---> p2 ---> p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    public void testProjectInheritance()
        throws Exception
    {
        File localRepo = getLocalRepositoryPath();
        
        System.out.println( "Local repository is at: " + localRepo.getAbsolutePath() );
        
        File pom0 = new File( localRepo, "p0/pom.xml" );
        File pom1 = new File( pom0.getParentFile(), "p1/pom.xml" );
        File pom2 = new File( pom1.getParentFile(), "p2/pom.xml" );
        File pom3 = new File( pom2.getParentFile(), "p3/pom.xml" );
        File pom4 = new File( pom3.getParentFile(), "p4/pom.xml" );
        File pom5 = new File( pom4.getParentFile(), "p5/pom.xml" );
        
        System.out.println( "Location of project-4's POM: " + pom4.getPath() );

        // load everything...
        MavenProject project0 = getProject( pom0 );
        MavenProject project1 = getProject( pom1 );
        MavenProject project2 = getProject( pom2 );
        MavenProject project3 = getProject( pom3 );
        MavenProject project4 = getProject( pom4 );
        MavenProject project5 = getProject( pom5 );

        assertEquals( "p4", project4.getName() );

        // ----------------------------------------------------------------------
        // Value inherited from p3
        // ----------------------------------------------------------------------

        assertEquals( "2000", project4.getInceptionYear() );

        // ----------------------------------------------------------------------
        // Value taken from p2
        // ----------------------------------------------------------------------

        assertEquals( "mailing-list", ( (MailingList) project4.getMailingLists().get( 0 ) ).getName() );

        // ----------------------------------------------------------------------
        // Value taken from p1
        // ----------------------------------------------------------------------

        assertEquals( "scm-url/p2/p3/p4", project4.getScm().getUrl() );

        // ----------------------------------------------------------------------
        // Value taken from p4
        // ----------------------------------------------------------------------

        assertEquals( "Codehaus", project4.getOrganization().getName() );

        // ----------------------------------------------------------------------
        // Value taken from super model
        // ----------------------------------------------------------------------

        assertEquals( "4.0.0", project4.getModelVersion() );
        
        Build build = project4.getBuild();
        List plugins = build.getPlugins();
        
        Map validPluginCounts = new HashMap();
        
        String testPluginArtifactId = "maven-compiler-plugin";
        
        // this is the plugin we're looking for.
        validPluginCounts.put( testPluginArtifactId, new Integer( 0 ) );
        
        // these are injected if -DperformRelease=true
        validPluginCounts.put( "maven-deploy-plugin", new Integer( 0 ) );
        validPluginCounts.put( "maven-javadoc-plugin", new Integer( 0 ) );
        validPluginCounts.put( "maven-source-plugin", new Integer( 0 ) );
        
        Plugin testPlugin = null;
        
        for ( Iterator it = plugins.iterator(); it.hasNext(); )
        {
            Plugin plugin = (Plugin) it.next();
            
            String pluginArtifactId = plugin.getArtifactId();
            
            if ( !validPluginCounts.containsKey( pluginArtifactId ) )
            {
                fail( "Illegal plugin found: " + pluginArtifactId );
            }
            else
            {
                if ( pluginArtifactId.equals( testPluginArtifactId ) )
                {
                    testPlugin = plugin;
                }
                
                Integer count = (Integer) validPluginCounts.get( pluginArtifactId );
                
                if ( count.intValue() > 0 )
                {
                    fail( "Multiple copies of plugin: " + pluginArtifactId + " found in POM." );
                }
                else
                {
                    count = new Integer( count.intValue() + 1 );
                    
                    validPluginCounts.put( pluginArtifactId, count );
                }
            }
        }
        
        List executions = testPlugin.getExecutions();
        
        assertEquals( 1, executions.size() );
    }
}