diff --git a/src/it/MPMD-318-auxclasspath-includeTests/invoker.properties b/src/it/MPMD-318-auxclasspath-includeTests/invoker.properties
new file mode 100644
index 0000000..85a3ada
--- /dev/null
+++ b/src/it/MPMD-318-auxclasspath-includeTests/invoker.properties
@@ -0,0 +1,21 @@
+# 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 verify
+invoker.goals.2 = clean verify -Daggregate=true
+invoker.maven.version = 3+
+invoker.debug = true
diff --git a/src/it/MPMD-318-auxclasspath-includeTests/module-a/pom.xml b/src/it/MPMD-318-auxclasspath-includeTests/module-a/pom.xml
new file mode 100644
index 0000000..0374658
--- /dev/null
+++ b/src/it/MPMD-318-auxclasspath-includeTests/module-a/pom.xml
@@ -0,0 +1,47 @@
+<?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>
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.maven.plugins.pmd.it</groupId>
+    <artifactId>MPMD-318-auxclasspath-includeTests</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>MPMD-318-auxclasspath-includeTests-module-a</artifactId>
+
+  <dependencies>
+    <dependency>
+        <groupId>org.apache.commons</groupId>
+        <artifactId>commons-lang3</artifactId>
+        <version>3.8.1</version>
+        <scope>compile</scope>
+    </dependency>
+    <dependency>
+        <groupId>commons-io</groupId>
+        <artifactId>commons-io</artifactId>
+        <version>2.6</version>
+        <scope>test</scope>
+    </dependency>
+  </dependencies>
+</project>
diff --git a/src/it/MPMD-318-auxclasspath-includeTests/module-a/src/main/java/module/a/ModuleA.java b/src/it/MPMD-318-auxclasspath-includeTests/module-a/src/main/java/module/a/ModuleA.java
new file mode 100644
index 0000000..a407af5
--- /dev/null
+++ b/src/it/MPMD-318-auxclasspath-includeTests/module-a/src/main/java/module/a/ModuleA.java
@@ -0,0 +1,24 @@
+package module.a;
+
+/*
+ * 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 ModuleA
+{
+}
\ No newline at end of file
diff --git a/src/it/MPMD-318-auxclasspath-includeTests/module-a/src/test/java/module/a/ModuleATest.java b/src/it/MPMD-318-auxclasspath-includeTests/module-a/src/test/java/module/a/ModuleATest.java
new file mode 100644
index 0000000..06b757f
--- /dev/null
+++ b/src/it/MPMD-318-auxclasspath-includeTests/module-a/src/test/java/module/a/ModuleATest.java
@@ -0,0 +1,24 @@
+package module.a;
+
+/*
+ * 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 ModuleATest
+{
+}
\ No newline at end of file
diff --git a/src/it/MPMD-318-auxclasspath-includeTests/pom.xml b/src/it/MPMD-318-auxclasspath-includeTests/pom.xml
new file mode 100644
index 0000000..f10c3ff
--- /dev/null
+++ b/src/it/MPMD-318-auxclasspath-includeTests/pom.xml
@@ -0,0 +1,61 @@
+<?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>
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.plugins.pmd.it</groupId>
+  <artifactId>MPMD-318-auxclasspath-includeTests</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
+  </properties>
+
+  <modules>
+    <module>module-a</module>
+  </modules>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>@project.artifactId@</artifactId>
+        <version>@project.version@</version>
+        <configuration>
+          <linkXRef>false</linkXRef>
+          <typeResolution>true</typeResolution>
+          <includeTests>true</includeTests>
+        </configuration>
+        <executions>
+          <execution>
+            <goals>
+              <goal>check</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/src/it/MPMD-318-auxclasspath-includeTests/verify.groovy b/src/it/MPMD-318-auxclasspath-includeTests/verify.groovy
new file mode 100644
index 0000000..b24bd87
--- /dev/null
+++ b/src/it/MPMD-318-auxclasspath-includeTests/verify.groovy
@@ -0,0 +1,42 @@
+/*
+ * 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 buildLog = new File( basedir, 'build.log' )
+assert buildLog.exists()
+
+def auxclasspathLog = ''
+for ( String line : buildLog.readLines() ) {
+    if ( line.contains( 'aux classpath:' ) ) {
+      auxclasspathLog += line + '\n';
+    }
+}
+
+// convert windows path names
+auxclasspathLog = auxclasspathLog.replaceAll('\\\\', '/')
+
+assert 1 == auxclasspathLog.count( 'Using aux classpath:' )
+assert 1 == auxclasspathLog.count( 'Using aggregated aux classpath:' )
+
+assert 2 == auxclasspathLog.count( 'module-a/target/test-classes' )
+assert 2 == auxclasspathLog.count( 'module-a/target/classes' )
+
+// compile
+assert 2 == auxclasspathLog.count( 'org/apache/commons/commons-lang3/3.8.1/commons-lang3-3.8.1.jar' )
+// test
+assert 2 == auxclasspathLog.count( 'commons-io/commons-io/2.6/commons-io-2.6.jar' )