[maven-release-plugin] copy for tag maven-jar-plugin-3.0.0

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/tags/maven-jar-plugin-3.0.0@1740872 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index b451c81..65bc513 100644
--- a/pom.xml
+++ b/pom.xml
@@ -132,6 +132,13 @@
   </dependencies>
 
   <build>
+    <resources>
+      <resource>
+        <directory>src/main/resources/META-INF/plexus</directory>
+        <filtering>true</filtering>
+        <targetPath>META-INF/plexus</targetPath>
+      </resource>
+    </resources>
     <pluginManagement>
       <plugins>
         <plugin>
diff --git a/src/it/MJAR-183/invoker.properties b/src/it/MJAR-183/invoker.properties
new file mode 100644
index 0000000..5e07ba5
--- /dev/null
+++ b/src/it/MJAR-183/invoker.properties
@@ -0,0 +1,19 @@
+# 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.
+
+invoker.description = This test only checks if using extensions works without any issue.
+invoker.goals = clean package
diff --git a/src/it/MJAR-183/pom.xml b/src/it/MJAR-183/pom.xml
new file mode 100755
index 0000000..ede6b4a
--- /dev/null
+++ b/src/it/MJAR-183/pom.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+
+<project
+  xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>maven-jar-plugin-test-mjar-183</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <description>MJAR-183 integration test</description>
+  <build>
+    <plugins>
+      <plugin>
+        <inherited>false</inherited>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>@project.version@</version>
+        <extensions>true</extensions>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/src/it/MJAR-183/src/main/java/A.java b/src/it/MJAR-183/src/main/java/A.java
new file mode 100755
index 0000000..474b0a6
--- /dev/null
+++ b/src/it/MJAR-183/src/main/java/A.java
@@ -0,0 +1,25 @@
+

+/*

+ * 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.

+ */

+

+public class A {

+    public static void main(String[] args) {

+

+    }

+}

diff --git a/src/it/MJAR-183/verify.bsh b/src/it/MJAR-183/verify.bsh
new file mode 100644
index 0000000..a9aeea5
--- /dev/null
+++ b/src/it/MJAR-183/verify.bsh
@@ -0,0 +1,52 @@
+
+/*
+ * 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.*;
+import java.util.*;
+import java.util.jar.*;
+import org.codehaus.plexus.util.*;
+
+boolean result = true;
+
+try
+{
+    File target = new File( basedir, "target" );
+    if ( !target.exists() || !target.isDirectory() )
+    {
+        System.err.println( "target file is missing or not a directory." );
+        return false;
+    }
+
+    File artifact = new File( target, "maven-jar-plugin-test-mjar-183-1.0-SNAPSHOT.jar" );
+    if ( !artifact.exists() )
+    {
+        System.err.println( "default artifact should exist." );
+        return false;
+    }
+
+    return true;
+}
+catch( Throwable e )
+{
+    e.printStackTrace();
+    return false;
+}
+
+return false;
diff --git a/src/it/MJAR-199-change-classifier/invoker.properties b/src/it/MJAR-199-change-classifier/invoker.properties
new file mode 100644
index 0000000..a644cb7
--- /dev/null
+++ b/src/it/MJAR-199-change-classifier/invoker.properties
@@ -0,0 +1,18 @@
+# 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.
+
+invoker.goals = clean package
diff --git a/src/it/MJAR-199-change-classifier/pom.xml b/src/it/MJAR-199-change-classifier/pom.xml
new file mode 100755
index 0000000..fd0d534
--- /dev/null
+++ b/src/it/MJAR-199-change-classifier/pom.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>maven-jar-plugin-test-mjar-199</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <description>MJAR-199 integration test</description>
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <artifactId>maven-jar-plugin</artifactId>
+          <version>@project.version@</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+    <plugins>
+      <plugin>
+        <artifactId>maven-jar-plugin</artifactId>
+        <executions>
+          <execution>
+            <goals>
+              <goal>test-jar</goal>
+            </goals>
+            <configuration>
+              <classifier>xyz</classifier>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/src/it/MJAR-199-change-classifier/src/test/java/A.java b/src/it/MJAR-199-change-classifier/src/test/java/A.java
new file mode 100755
index 0000000..474b0a6
--- /dev/null
+++ b/src/it/MJAR-199-change-classifier/src/test/java/A.java
@@ -0,0 +1,25 @@
+

+/*

+ * 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.

+ */

+

+public class A {

+    public static void main(String[] args) {

+

+    }

+}

diff --git a/src/it/MJAR-199-change-classifier/verify.bsh b/src/it/MJAR-199-change-classifier/verify.bsh
new file mode 100644
index 0000000..2f82c46
--- /dev/null
+++ b/src/it/MJAR-199-change-classifier/verify.bsh
@@ -0,0 +1,58 @@
+
+/*
+ * 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.*;
+import java.util.*;
+import java.util.jar.*;
+import org.codehaus.plexus.util.*;
+
+boolean result = true;
+
+try
+{
+    File target = new File( basedir, "target" );
+    if ( !target.exists() || !target.isDirectory() )
+    {
+        System.err.println( "target file is missing or not a directory." );
+        return false;
+    }
+
+    File artifact = new File( target, "maven-jar-plugin-test-mjar-199-1.0-SNAPSHOT.jar" );
+    if ( !artifact.exists() )
+    {
+        System.err.println( "default artifact should exist." );
+        return false;
+    }
+
+    File artifact = new File( target, "maven-jar-plugin-test-mjar-199-1.0-SNAPSHOT-xyz.jar" );
+    if ( !artifact.exists() )
+    {
+        System.err.println( "test artifact should exist with classifier from pom file." );
+        return false;
+    }
+    return true;
+}
+catch( Throwable e )
+{
+    e.printStackTrace();
+    return false;
+}
+
+return false;
diff --git a/src/it/MJAR-199/invoker.properties b/src/it/MJAR-199/invoker.properties
new file mode 100644
index 0000000..a644cb7
--- /dev/null
+++ b/src/it/MJAR-199/invoker.properties
@@ -0,0 +1,18 @@
+# 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.
+
+invoker.goals = clean package
diff --git a/src/it/MJAR-199/pom.xml b/src/it/MJAR-199/pom.xml
new file mode 100755
index 0000000..2fcaf99
--- /dev/null
+++ b/src/it/MJAR-199/pom.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>maven-jar-plugin-test-mjar-199</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <description>MJAR-199 integration test</description>
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <artifactId>maven-jar-plugin</artifactId>
+          <version>@project.version@</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+    <plugins>
+      <plugin>
+        <artifactId>maven-jar-plugin</artifactId>
+        <executions>
+          <execution>
+            <goals>
+              <goal>test-jar</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/src/it/MJAR-199/src/test/java/A.java b/src/it/MJAR-199/src/test/java/A.java
new file mode 100755
index 0000000..474b0a6
--- /dev/null
+++ b/src/it/MJAR-199/src/test/java/A.java
@@ -0,0 +1,25 @@
+

+/*

+ * 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.

+ */

+

+public class A {

+    public static void main(String[] args) {

+

+    }

+}

diff --git a/src/it/MJAR-199/verify.bsh b/src/it/MJAR-199/verify.bsh
new file mode 100644
index 0000000..18c8b25
--- /dev/null
+++ b/src/it/MJAR-199/verify.bsh
@@ -0,0 +1,58 @@
+
+/*
+ * 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.*;
+import java.util.*;
+import java.util.jar.*;
+import org.codehaus.plexus.util.*;
+
+boolean result = true;
+
+try
+{
+    File target = new File( basedir, "target" );
+    if ( !target.exists() || !target.isDirectory() )
+    {
+        System.err.println( "target file is missing or not a directory." );
+        return false;
+    }
+
+    File artifact = new File( target, "maven-jar-plugin-test-mjar-199-1.0-SNAPSHOT.jar" );
+    if ( !artifact.exists() )
+    {
+        System.err.println( "default artifact should exist." );
+        return false;
+    }
+
+    File artifact = new File( target, "maven-jar-plugin-test-mjar-199-1.0-SNAPSHOT-tests.jar" );
+    if ( !artifact.exists() )
+    {
+        System.err.println( "test artifact should exist." );
+        return false;
+    }
+    return true;
+}
+catch( Throwable e )
+{
+    e.printStackTrace();
+    return false;
+}
+
+return false;
diff --git a/src/main/java/org/apache/maven/plugins/jar/AbstractJarMojo.java b/src/main/java/org/apache/maven/plugins/jar/AbstractJarMojo.java
index e087680..a70591e 100644
--- a/src/main/java/org/apache/maven/plugins/jar/AbstractJarMojo.java
+++ b/src/main/java/org/apache/maven/plugins/jar/AbstractJarMojo.java
@@ -68,11 +68,9 @@
     private File outputDirectory;
 
     /**
-     * Name of the generated JAR.<br/>
-     * Starting with <b>3.0.0</b> the property has been renamed from <code>jar.finalName</code> to
-     * <code>maven.jar.finalName</code>.
+     * Name of the generated JAR.
      */
-    @Parameter( property = "maven.jar.finalName", defaultValue = "${project.build.finalName}" )
+    @Parameter( defaultValue = "${project.build.finalName}", readonly = true )
     private String finalName;
 
     /**
@@ -131,18 +129,20 @@
     private boolean forceCreation;
 
     /**
-     * Skip creating empty archives.<br/>
-     * Starting with <b>3.0.0</b> the property has been renamed from <code>jar.skipIfEmpty</code> to
-     * <code>maven.jar.skipIfEmpty</code>.
+     * Skip creating empty archives.
      */
-    @Parameter( property = "maven.jar.skipIfEmpty", defaultValue = "false" )
+    @Parameter( defaultValue = "false" )
     private boolean skipIfEmpty;
 
     /**
      * Return the specific output directory to serve as the root for the archive.
+     * @return get classes directory.
      */
     protected abstract File getClassesDirectory();
 
+    /**
+     * @return the {@link #project}
+     */
     protected final MavenProject getProject()
     {
         return project;
@@ -150,11 +150,13 @@
 
     /**
      * Overload this to produce a jar with another classifier, for example a test-jar.
+     * @return get the classifier.
      */
     protected abstract String getClassifier();
 
     /**
      * Overload this to produce a test-jar, for example.
+     * @return return the type.
      */
     protected abstract String getType();
 
@@ -162,22 +164,22 @@
      * Returns the Jar file to generate, based on an optional classifier.
      *
      * @param basedir the output directory
-     * @param finalName the name of the ear file
+     * @param resultFinalName the name of the ear file
      * @param classifier an optional classifier
      * @return the file to generate
      */
-    protected File getJarFile( File basedir, String finalName, String classifier )
+    protected File getJarFile( File basedir, String resultFinalName, String classifier )
     {
         if ( basedir == null )
         {
             throw new IllegalArgumentException( "basedir is not allowed to be null" );
         }
-        if ( finalName == null )
+        if ( resultFinalName == null )
         {
             throw new IllegalArgumentException( "finalName is not allowed to be null" );
         }
 
-        StringBuilder fileName = new StringBuilder( finalName );
+        StringBuilder fileName = new StringBuilder( resultFinalName );
 
         if ( hasClassifier() )
         {
@@ -191,6 +193,8 @@
 
     /**
      * Generates the JAR.
+     * @return The instance of File for the created archive file.
+     * @throws MojoExecutionException in case of an error.
      */
     public File createArchive()
         throws MojoExecutionException
@@ -230,6 +234,7 @@
 
     /**
      * Generates the JAR.
+     * @throws MojoExecutionException in case of an error.
      */
     public void execute()
         throws MojoExecutionException
diff --git a/src/main/java/org/apache/maven/plugins/jar/JarMojo.java b/src/main/java/org/apache/maven/plugins/jar/JarMojo.java
index 2d0c5b5..4172028 100644
--- a/src/main/java/org/apache/maven/plugins/jar/JarMojo.java
+++ b/src/main/java/org/apache/maven/plugins/jar/JarMojo.java
@@ -49,16 +49,19 @@
      * If not given this will create the main artifact which is the default behavior. 
      * If you try to do that a second time without using a classifier the build will fail.
      */
-    @Parameter( property = "maven.jar.classifier" )
+    @Parameter
     private String classifier;
 
+    /**
+     * {@inheritDoc}
+     */
     protected String getClassifier()
     {
         return classifier;
     }
 
     /**
-     * @return type of the generated artifact
+     * {@inheritDoc}
      */
     protected String getType()
     {
@@ -66,7 +69,7 @@
     }
 
     /**
-     * Return the main classes directory, so it's used as the root of the jar.
+     * {@inheritDoc}
      */
     protected File getClassesDirectory()
     {
diff --git a/src/main/java/org/apache/maven/plugins/jar/TestJarMojo.java b/src/main/java/org/apache/maven/plugins/jar/TestJarMojo.java
index 5556b00..5c90449 100644
--- a/src/main/java/org/apache/maven/plugins/jar/TestJarMojo.java
+++ b/src/main/java/org/apache/maven/plugins/jar/TestJarMojo.java
@@ -40,7 +40,7 @@
 {
 
     /**
-     * Set this to <code>true</code> to bypass unit tests entirely. Its use is <b>NOT RECOMMENDED</b>, but quite
+     * Set this to <code>true</code> to bypass test-jar generation. Its use is <b>NOT RECOMMENDED</b>, but quite
      * convenient on occasion.
      */
     @Parameter( property = "maven.test.skip" )
@@ -55,16 +55,19 @@
     /**
      * Classifier to used for {@code test-jar}.
      */
-    @Parameter( property = "maven.jar.testClassifier", defaultValue = "tests" )
+    @Parameter( defaultValue = "tests" )
     private String classifier;
 
+    /**
+     * {@inheritDoc}
+     */
     protected String getClassifier()
     {
         return classifier;
     }
 
     /**
-     * @return type of the generated artifact
+     * {@inheritDoc}
      */
     protected String getType()
     {
@@ -72,13 +75,16 @@
     }
 
     /**
-     * Return the test-classes directory, to serve as the root of the tests jar.
+     * {@inheritDoc}
      */
     protected File getClassesDirectory()
     {
         return testClassesDirectory;
     }
 
+    /**
+     * {@inheritDoc}
+     */
     public void execute()
         throws MojoExecutionException
     {
diff --git a/src/main/resources/META-INF/plexus/components.xml b/src/main/resources/META-INF/plexus/components.xml
new file mode 100644
index 0000000..2665d7f
--- /dev/null
+++ b/src/main/resources/META-INF/plexus/components.xml
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+  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.
+-->
+
+<component-set>
+  <components>
+    <!--
+      | JAR
+    -->
+    <component>
+      <role>org.apache.maven.artifact.handler.ArtifactHandler</role>
+      <role-hint>jar</role-hint>
+      <implementation>org.apache.maven.artifact.handler.DefaultArtifactHandler</implementation>
+      <configuration>
+        <type>jar</type>
+        <language>java</language>
+        <addedToClasspath>true</addedToClasspath>
+      </configuration>
+    </component>
+    <!--
+     | TEST JAR
+     |-->
+    <component>
+      <role>org.apache.maven.artifact.handler.ArtifactHandler</role>
+      <role-hint>test-jar</role-hint>
+      <implementation>org.apache.maven.artifact.handler.DefaultArtifactHandler</implementation>
+      <configuration>
+        <classifier>tests</classifier>
+        <extension>jar</extension>
+        <type>test-jar</type>
+        <packaging>jar</packaging>
+        <language>java</language>
+        <addedToClasspath>true</addedToClasspath>
+      </configuration>
+    </component>
+
+    <!--
+      | Defining the phases with their appropriate plugins
+      ! and versions which will be executed during the 'default'
+      ! life cycle.
+    -->
+    <component>
+      <role>org.apache.maven.lifecycle.mapping.LifecycleMapping</role>
+      <role-hint>jar</role-hint>
+      <implementation>org.apache.maven.lifecycle.mapping.DefaultLifecycleMapping</implementation>
+      <configuration>
+        <lifecycles>
+          <lifecycle>
+            <id>default</id>
+            <!-- START SNIPPET: jar-lifecycle -->
+            <phases>
+              <process-resources>
+                org.apache.maven.plugins:maven-resources-plugin:2.7:resources
+              </process-resources>
+              <compile>
+                org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile
+              </compile>
+              <process-test-resources>
+                org.apache.maven.plugins:maven-resources-plugin:2.7:testResources
+              </process-test-resources>
+              <test-compile>
+                org.apache.maven.plugins:maven-compiler-plugin:3.5.1:testCompile
+              </test-compile>
+              <test>
+                org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test
+              </test>
+              <package>
+                org.apache.maven.plugins:maven-jar-plugin:${project.version}:jar
+              </package>
+              <install>
+                org.apache.maven.plugins:maven-install-plugin:2.5.2:install
+              </install>
+              <deploy>
+                org.apache.maven.plugins:maven-deploy-plugin:2.8.2:deploy
+              </deploy>
+            </phases>
+            <!-- END SNIPPET: jar-lifecycle -->
+          </lifecycle>
+        </lifecycles>
+      </configuration>
+    </component>
+
+  </components>
+</component-set>