How can I pass JVM system properties on to my tests?

Question

I have the following task

task testGeb(type:Test) {
   jvmArgs '-Dgeb.driver=firefox'
   include "geb/**/*.class"
   testReportDir = new File(testReportDir, "gebtests")
}

The system property doesn't appear to make it to the Geb tests, as Geb does not spawn Firefox to run the tests. When I set the same system property in Eclipse and run the tests, everything works fine.

Answer 1

Try using system properties:

test {
   systemProperties['geb.driver'] = 'firefox'
   include "geb/**/*.class"
   testReportDir = new File(testReportDir, "gebtests")
}

Answer 2

You can also directly set the system property in the task:

task testGeb(type:Test) {
    System.setProperty('geb.driver', 'firefox')}

(the solution above will also work for task type different from Test)

or if you would like to be able to pass different properties from the command line, you can include a more flexible solution in the task definition:

task testGeb(type:Test) {
    jvmArgs project.gradle.startParameter.systemPropertiesArgs.entrySet().collect{"-D${it.key}=${it.value}"}
}

and then you can run: ./gradlew testGeb -D[anyArg]=[anyValue], in your case: ./gradlew testGeb -Dgeb.driver=firefox