diff --git a/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng3920PlexusComponentApiTest.java b/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng3920PlexusComponentApiTest.java
new file mode 100644
index 0000000000..30289d4c07
--- /dev/null
+++ b/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng3920PlexusComponentApiTest.java
@@ -0,0 +1,55 @@
+package org.apache.maven.it;
+
+/*
+ * 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 org.apache.maven.it.util.FileUtils;
+import org.apache.maven.it.util.ResourceExtractor;
+
+/**
+ * This is a test set for MNG-3920. The first test verifies that
+ * a plugin using plexus-component-api in a Plexus component does not cause linkage errors.
+ */
+public class MavenITmng3920PlexusComponentApiTest
+ extends AbstractMavenIntegrationTestCase
+{
+ public MavenITmng3920PlexusComponentApiTest()
+ {
+ super( "(2.0.10,2.1.0-M1),(2.1.0-M1,)" ); // only test in 2.0.11+, and not in 2.1.0-M1
+ }
+
+ public void testitMNG3920()
+ throws Exception
+ {
+ File dir =
+ ResourceExtractor.simpleExtractResources( getClass(), "/mng-3920" );
+
+ Verifier verifier;
+
+ verifier = new Verifier( dir.getAbsolutePath() );
+
+ verifier.executeGoal( "validate" );
+
+ verifier.verifyErrorFreeLog();
+
+ verifier.resetStreams();
+ }
+}
diff --git a/its/core-it-suite/src/test/resources/bootstrap/pom.xml b/its/core-it-suite/src/test/resources/bootstrap/pom.xml
index 1558b576c8..f9e8cb6e32 100644
--- a/its/core-it-suite/src/test/resources/bootstrap/pom.xml
+++ b/its/core-it-suite/src/test/resources/bootstrap/pom.xml
@@ -183,6 +183,12 @@ under the License.
${itPluginVersion}
runtime
+
+ org.apache.maven.its.plugins
+ maven-it-plugin-plexus-component-api
+ ${itPluginVersion}
+ runtime
+
org.apache.maven.its.plugins
maven-it-plugin-project-interpolation
diff --git a/its/core-it-suite/src/test/resources/mng-3920/pom.xml b/its/core-it-suite/src/test/resources/mng-3920/pom.xml
new file mode 100644
index 0000000000..f963d7c439
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-3920/pom.xml
@@ -0,0 +1,24 @@
+
+ 4.0.0
+ org.apache.maven.its.mng3920
+ child
+ jar
+ 1.0-SNAPSHOT
+
+
+
+ org.apache.maven.its.plugins
+ maven-it-plugin-plexus-component-api
+ 2.1-SNAPSHOT
+
+
+
+ velocity
+
+
+
+
+
+
+
diff --git a/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/pom.xml b/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/pom.xml
new file mode 100644
index 0000000000..76d1c5e9de
--- /dev/null
+++ b/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/pom.xml
@@ -0,0 +1,55 @@
+
+
+
+
+
+ 4.0.0
+
+
+ maven-it-plugins
+ org.apache.maven.its.plugins
+ 2.1-SNAPSHOT
+
+
+ maven-it-plugin-plexus-component-api
+ maven-plugin
+
+ Maven Integration Test Plugin :: Plexus Component API
+
+
+
+
+ org.codehaus.plexus
+ plexus-velocity
+ 1.1.7
+
+
+ org.apache.maven
+ maven-plugin-api
+ 2.0
+
+
+ junit
+ junit
+ 3.8.1
+ test
+
+
+
diff --git a/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/src/main/java/org/apache/maven/its/plugins/VelocityMojo.java b/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/src/main/java/org/apache/maven/its/plugins/VelocityMojo.java
new file mode 100644
index 0000000000..a0f10c2597
--- /dev/null
+++ b/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/src/main/java/org/apache/maven/its/plugins/VelocityMojo.java
@@ -0,0 +1,56 @@
+package org.apache.maven.its.plugins;
+
+/*
+ * 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 org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.codehaus.plexus.velocity.VelocityComponent;
+
+/**
+ * @goal velocity
+ * @phase validate
+ */
+public class VelocityMojo
+ extends AbstractMojo
+{
+ /**
+ * @component
+ */
+ protected VelocityComponent velocityComponent;
+
+ public void execute()
+ throws MojoExecutionException, MojoFailureException
+ {
+ // velocityComponent should not be null
+ velocityComponent.getEngine();
+
+ try
+ {
+ // velocityComponent engine should not be null
+ // this is the real test to check that we got the right Initializable interface in both Plexus and the component
+ velocityComponent.getEngine().getTemplate( "/template.vm" );
+ }
+ catch ( Exception e )
+ {
+ throw new MojoExecutionException( e.getMessage(), e );
+ }
+ }
+}
diff --git a/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/src/main/resources/template.vm b/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/src/main/resources/template.vm
new file mode 100644
index 0000000000..8ab686eafe
--- /dev/null
+++ b/its/core-it-support/core-it-plugins/maven-it-plugin-plexus-component-api/src/main/resources/template.vm
@@ -0,0 +1 @@
+Hello, World!
diff --git a/its/core-it-support/core-it-plugins/pom.xml b/its/core-it-support/core-it-plugins/pom.xml
index a3cc167522..e69b83b7dc 100644
--- a/its/core-it-support/core-it-plugins/pom.xml
+++ b/its/core-it-support/core-it-plugins/pom.xml
@@ -57,6 +57,7 @@ under the License.
maven-it-plugin-all
maven-it-plugin-plexus-utils-11
maven-it-plugin-plexus-utils-new
+ maven-it-plugin-plexus-component-api