[MSHADE-419] Add an integration test

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/api/pom.xml

@@ -0,0 +1,33 @@
+<?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>
+    <parent>
+        <groupId>org.apache.maven.its.shade.cdrp-mm</groupId>
+        <artifactId>mshade-419-parent</artifactId>
+        <version>1.0</version>
+    </parent>
+    <artifactId>mshade-419-api</artifactId>
+    <version>1.0</version>
+</project>

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/api/src/main/java/Api.java

@@ -0,0 +1,22 @@
+/*
+ * 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 Api
+{
+}

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/impl-user/pom.xml

@@ -0,0 +1,55 @@
+<?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>
+    <parent>
+        <groupId>org.apache.maven.its.shade.cdrp-mm</groupId>
+        <artifactId>mshade-419-parent</artifactId>
+        <version>1.0</version>
+    </parent>
+    <artifactId>mshade-419-simple-user</artifactId>
+    <version>1.0</version>
+    <dependencies>
+        <dependency>
+            <!-- MSHADE-419:
+            The mshade-419-impl project attaches a shaded jar, which we do not use here.
+            Thus, we would expect transitive dependencies to still get pulled in.
+            However, the compilation of this project fails with:
+
+            SimpleUser.java:[23,5] cannot find symbol
+              symbol:   class Api
+
+            Note that both the normal and the shaded jar of mshade-419-impl are created with
+            the correct pom.
+            The missing transitive dependencies only manifest themselves in a multimodule build.
+            -->
+            <groupId>org.apache.maven.its.shade.cdrp-mm</groupId>
+            <artifactId>mshade-419-impl</artifactId>
+            <version>1.0</version>
+            <type>jar</type>
+            <!-- uncommenting the following avoids the MSHADE-419 problem -->
+            <!-- <classifier>shaded</classifier> -->
+        </dependency>
+    </dependencies>
+</project>

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/impl-user/src/main/java/SimpleUser.java

@@ -0,0 +1,24 @@
+/*
+ * 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 SimpleUser
+{
+    Impl impl = new Impl();
+    Api api = new Impl();
+}

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/impl/pom.xml

@@ -0,0 +1,60 @@
+<?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>
+    <parent>
+        <groupId>org.apache.maven.its.shade.cdrp-mm</groupId>
+        <artifactId>mshade-419-parent</artifactId>
+        <version>1.0</version>
+    </parent>
+    <artifactId>mshade-419-impl</artifactId>
+    <version>1.0</version>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.maven.its.shade.cdrp-mm</groupId>
+            <artifactId>mshade-419-api</artifactId>
+            <version>1.0</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>@project.version@</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <shadedArtifactAttached>true</shadedArtifactAttached>
+                            <!-- uncommenting the following avoids the MSHADE-419 problem -->
+                            <!-- <createDependencyReducedPom>false</createDependencyReducedPom> -->
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/impl/src/main/java/Impl.java

@@ -0,0 +1,22 @@
+/*
+ * 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 Impl extends Api
+{
+}

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/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.its.shade.cdrp-mm</groupId>
+    <artifactId>mshade-419-parent</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0</version>
+    <modules>
+        <module>api</module>
+        <module>impl</module>
+        <module>impl-user</module>
+    </modules>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-jar-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/it/projects/MSHADE-419_createDependencyReducedPom_multimodule/verify.groovy

@@ -0,0 +1,61 @@
+/*
+ * 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.util.jar.*
+import org.codehaus.plexus.util.*
+
+// note that the following checks were passing even before any fix for MSHADE-419,
+// since the generated poms and jars are generated correctly.
+// only compilation of the impl-user module is failing because it uses the normal jar but
+// without its transitive dependencies
+
+String jarPrefix = "impl/target/mshade-419-impl-1.0"
+String jarPomPath = "META-INF/maven/org.apache.maven.its.shade.cdrp-mm/mshade-419-impl/pom.xml"
+String apiDependencyString = "<artifactId>mshade-419-api</artifactId>"
+
+String mainPomFileContent = FileUtils.fileRead( new File( basedir, "impl/pom.xml" ), "UTF-8" )
+if ( !mainPomFileContent.contains( apiDependencyString ) )
+{
+    throw new IllegalStateException( "The pom.xml should still contain the api dependency:\n" + mainPomFileContent )
+}
+
+String reducedPomFileContent = FileUtils.fileRead( new File( basedir, "impl/dependency-reduced-pom.xml" ), "UTF-8" )
+if ( reducedPomFileContent.contains( apiDependencyString ) )
+{
+    throw new IllegalStateException( "The dependency-reduced-pom.xml should not contain the api dependency:\n" + reducedPomFileContent )
+}
+
+JarFile jarFile = null
+try
+{
+    jarFile = new JarFile ( new File( basedir, jarPrefix + ".jar" ) )
+    JarEntry jarEntry = jarFile.getEntry(jarPomPath  )
+    String pomFile = IOUtil.toString( jarFile.getInputStream( jarEntry ), "UTF-8" )
+    if ( !pomFile.contains( apiDependencyString ) )
+    {
+        throw new IllegalStateException( "The pom.xml in the normal jar should still contain the api dependency:\n" + pomFile )
+    }
+}
+finally
+{
+    if ( jarFile != null )
+    {
+        jarFile.close()
+    }
+}