[MPLUGIN-223] HelpMojo is not extracted when using java-annotations extractor

- Add an IT to verify that this issue has been solved

git-svn-id: https://svn.apache.org/repos/asf/maven/plugin-tools/trunk@1405948 13f79535-47bb-0310-9956-ffa450edef68

maven-plugin-plugin/src/it/mplugin-223/invoker.properties

@@ -0,0 +1,15 @@
+# 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.1 = clean verify -DskipTests

maven-plugin-plugin/src/it/mplugin-223/pom.xml

@@ -0,0 +1,84 @@
+<?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.plugin.its</groupId>
+  <artifactId>massembly-223</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>maven-plugin</packaging>
+
+  <name>massembly-223 Maven Plugin</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <mavenPluginPluginVersion>@project.version@</mavenPluginPluginVersion>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-plugin-api</artifactId>
+      <version>2.2.1</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-annotations</artifactId>
+      <version>${mavenPluginPluginVersion}</version>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.4</version>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-plugin-plugin</artifactId>
+        <version>${mavenPluginPluginVersion}</version>
+        <configuration>
+          <extractors>
+            <extractor>java-annotations</extractor>
+          </extractors>
+          <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
+        </configuration>
+        <executions>
+          <execution>
+            <id>mojo-descriptor</id>
+            <goals>
+              <goal>descriptor</goal>
+            </goals>
+          </execution>
+          <execution>
+            <id>help-goal</id>
+            <goals>
+              <goal>helpmojo</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

maven-plugin-plugin/src/it/mplugin-223/src/main/java/org/apache/maven/plugins/plugin/it/MyMojo.java

@@ -0,0 +1,81 @@
+package org.apache.maven.plugins.plugin.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 org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+
+/**
+ * Goal which touches a timestamp file.
+ */
+@Mojo(name = "touch", defaultPhase = LifecyclePhase.PROCESS_RESOURCES)
+public class MyMojo
+    extends AbstractMojo
+{
+    /**
+     * Location of the file.
+     */
+    @Parameter(defaultValue = "${project.build.directory}", required = true)
+    private File outputDirectory;
+
+    public void execute()
+        throws MojoExecutionException
+    {
+        File f = outputDirectory;
+
+        if ( !f.exists() )
+        {
+            f.mkdirs();
+        }
+
+        File touch = new File( f, "touch.txt" );
+
+        FileWriter w = null;
+        try
+        {
+            w = new FileWriter( touch );
+
+            w.write( "touch.txt" );
+        }
+        catch ( IOException e )
+        {
+            throw new MojoExecutionException( "Error creating file " + touch, e );
+        }
+        finally
+        {
+            if ( w != null )
+            {
+                try
+                {
+                    w.close();
+                }
+                catch ( IOException e )
+                {
+                    // ignore
+                }
+            }
+        }
+    }
+}

maven-plugin-plugin/src/it/mplugin-223/verify.groovy

@@ -0,0 +1,28 @@
+/*
+ * 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.
+ */
+
+File descriptorFile = new File( basedir, "target/classes/META-INF/maven/plugin.xml" );
+assert descriptorFile.isFile()
+
+def pluginDescriptor = new XmlParser().parse( descriptorFile );
+
+def mojo = pluginDescriptor.mojos.mojo.findAll{ it.goal.text() == "help" }[0]
+
+// check help mojo plugin descriptor
+assert mojo != null
+
+return true;