I have a plugin that creates a special zip file as part of the build process.
To do this it defines a custom packaging type 'wcc' and a custom life cycle to go with it.
When I run mvn package the applicaton builds my zip file just fine and everything works.
(note: it is skipping unit tests to do this.)
However, when I run mvn test it fails.
and spits out the following log:
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test
(default-test) on project LowesMMU:
A type incompatibility occured while executing
org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test:
java.io.File cannot be cast to java.lang.String
[ERROR] -----------------------------------------------------
[ERROR] realm = plugin>org.apache.maven.plugins:maven-surefire-plugin:2.19.1
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/.m2/repository/org/apache/maven/plugins/maven-surefire-plugin/2.19.1/maven-surefire-plugin-2.19.1.jar
[ERROR] urls[1] = file:/.m2/repository/org/apache/maven/surefire/maven-surefire-common/2.19.1/maven-surefire-common-2.19.1.jar
[ERROR] urls[2] = file:/.m2/repository/org/apache/maven/surefire/surefire-booter/2.19.1/surefire-booter-2.19.1.jar
[ERROR] urls[3] = file:/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.15/plexus-utils-1.5.15.jar
[ERROR] urls[4] = file:/.m2/repository/junit/junit/4.12/junit-4.12.jar
[ERROR] urls[5] = file:/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar
[ERROR] urls[6] = file:/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar
[ERROR] urls[7] = file:/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.11/plexus-interpolation-1.11.jar
[ERROR] urls[8] = file:/.m2/repository/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.jar
[ERROR] urls[9] = file:/.m2/repository/org/slf4j/slf4j-api/1.5.6/slf4j-api-1.5.6.jar
[ERROR] urls[10] = file:/.m2/repository/org/slf4j/jcl-over-slf4j/1.5.6/jcl-over-slf4j-1.5.6.jar
[ERROR] urls[11] = file:/.m2/repository/org/apache/maven/reporting/maven-reporting-api/3.0/maven-reporting-api-3.0.jar
[ERROR] urls[12] = file:/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
[ERROR] urls[13] = file:/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
[ERROR] urls[14] = file:/.m2/repository/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar
[ERROR] urls[15] = file:/.m2/repository/org/apache/maven/surefire/surefire-api/2.19.1/surefire-api-2.19.1.jar
[ERROR] urls[16] = file:/.m2/repository/org/apache/maven/plugin-tools/maven-plugin-annotations/3.3/maven-plugin-annotations-3.3.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import from realm ClassRealm[project>com.lowes.ecm:LowesMMU:1.0.0-SNAPSHOT, parent: ClassRealm[maven.api, parent: null]]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] -> [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
If I change <packaging> to jar from wcc then my tests run and pass just fine.
So why am I getting this error, and more importantly how do I fix it?
Further Investigation
Maven surefire plugin only supports java.lang.String properties.
My plugin has a pair of java.io.File properties.
@Parameter(property = "componentZip", defaultValue = "${componentLocation}")
protected File componentZip;
@Parameter(property = "manifestFile", defaultValue = "${project.basedir}/manifest.hda")
protected File manifestFile;
These properties are used by my plugin for packing the zip file, along with packaging the file appropriately and making sure it is built in the expected format.
How can I get surefire to ignore these config properties? Do I need to make them String and add conversions to File in my plugin where It's used that way?
I figured out my Problem. I had a Mojo defined for the initialize phase. It was processing my configuration and setting default values. one of the values it was setting was componentZip. To make sure it got migrated to the later phases, it as storing it in Properties, UserProperties, and SystemProperties. Converting it, and the Properties update code to a String solved my problem.