mvn package causes NullPointerException in maven-surefire-plugin

[janjagusch]

Hi, thanks for building gdv.xport!

Following #42, I run into an error when running mvn package from the source root.

mvn -version
Apache Maven 3.6.0
Maven home: /usr/share/maven
Java version: 11.0.7, vendor: Ubuntu, runtime: /usr/lib/jvm/java-11-openjdk-amd64
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.3.0-53-generic", arch: "amd64", family: "unix"

mvn package
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/usr/share/maven/lib/guice.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] GDV.XPort                                                          [pom]
[INFO] GDV.XPort-Lib                                                      [jar]
[INFO] GDV.XPort-Services                                                 [war]
[INFO] GDV.XPort-Deprecated                                               [jar]
[INFO] 
[INFO] --------------------< com.github.oboehm:gdv-xport >---------------------
[INFO] Building GDV.XPort 4.0.4                                           [1/4]
[INFO] --------------------------------[ pom ]---------------------------------
[INFO] 
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-versions) @ gdv-xport ---
[INFO] 
[INFO] --- jacoco-maven-plugin:0.8.5:prepare-agent (default-prepare-agent) @ gdv-xport ---
[INFO] argLine set to -javaagent:/home/jan/.m2/repository/org/jacoco/org.jacoco.agent/0.8.5/org.jacoco.agent-0.8.5-runtime.jar=destfile=/home/jan/projects/personal/gdv.xport/target/jacoco.exec,append=true
[INFO] 
[INFO] ------------------< com.github.oboehm:gdv-xport-lib >-------------------
[INFO] Building GDV.XPort-Lib 4.0.4                                       [2/4]
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-versions) @ gdv-xport-lib ---
[INFO] 
[INFO] --- jacoco-maven-plugin:0.8.5:prepare-agent (default-prepare-agent) @ gdv-xport-lib ---
[INFO] argLine set to -javaagent:/home/jan/.m2/repository/org/jacoco/org.jacoco.agent/0.8.5/org.jacoco.agent-0.8.5-runtime.jar=destfile=/home/jan/projects/personal/gdv.xport/lib/target/jacoco.exec,append=true
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ gdv-xport-lib ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 43 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.6.1:compile (default-compile) @ gdv-xport-lib ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ gdv-xport-lib ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 42 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.6.1:testCompile (default-testCompile) @ gdv-xport-lib ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-surefire-plugin:2.20.1:test (default-test) @ gdv-xport-lib ---
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for GDV.XPort 4.0.4:
[INFO] 
[INFO] GDV.XPort .......................................... SUCCESS [  0.994 s]
[INFO] GDV.XPort-Lib ...................................... FAILURE [  1.081 s]
[INFO] GDV.XPort-Services ................................. SKIPPED
[INFO] GDV.XPort-Deprecated ............................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.464 s
[INFO] Finished at: 2020-06-04T11:54:12+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.20.1:test (default-test) on project gdv-xport-lib: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.20.1:test failed.: NullPointerException -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :gdv-xport-lib

According to discussion here the recommended solution is to use the latest version of the maven surefire plugin (v3.0.0). I updated surefire locally and can confirm that this solved the issue for me.

However, I am not familiar with Java - maybe I am doing something wrong here?