[MDEP-739] Dependency Plugin go-offline doesn't respect artifact classifier

Closes #133

Author: jvv-trackunit

src/it/projects/mdep-739-go-offline-respect-classifiers/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 = ${project.groupId}:${project.artifactId}:${project.version}:go-offline

src/it/projects/mdep-739-go-offline-respect-classifiers/pom.xml

@@ -0,0 +1,38 @@
+<?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.dependency</groupId>
+  <artifactId>mdep-739-go-offline-respect-classifiers</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+  <description>Test that dependency:go-offline respects classifiers on artifacts</description>
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.cloud</groupId>
+      <artifactId>spring-cloud-stream</artifactId>
+      <scope>test</scope>
+      <type>test-jar</type>
+      <classifier>test-binder</classifier>
+      <version>3.1.2</version>
+    </dependency>
+  </dependencies>
+</project>

src/it/projects/mdep-739-go-offline-respect-classifiers/verify.groovy

@@ -0,0 +1,26 @@
+/*
+ * 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 file = new File( basedir, "build.log" );
+assert file.exists();
+
+String buildLog = file.getText( "UTF-8" );
+assert buildLog.contains( 'Resolved dependency: spring-cloud-stream-3.1.2-test-binder.jar' );
+
+return true;

src/main/java/org/apache/maven/plugins/dependency/resolvers/GoOfflineMojo.java

@@ -187,6 +187,7 @@ private DependableCoordinate createDependendableCoordinateFromArtifact( final Ar
         result.setArtifactId( artifact.getArtifactId() );
         result.setVersion( artifact.getVersion() );
         result.setType( artifact.getType() );
+        result.setClassifier( artifact.getClassifier() );
 
         return result;
     }
@@ -198,6 +199,7 @@ private DependableCoordinate createDependendableCoordinateFromDependency( final
         result.setArtifactId( dependency.getArtifactId() );
         result.setVersion( dependency.getVersion() );
         result.setType( dependency.getType() );
+        result.setClassifier( dependency.getClassifier() );
 
         return result;
     }