How to setup different test working dir per source set in gradle?

I want to add additional source set in my gradle.build and use separate test working directory for this source set. How to achieve it?

This config doesn't work, because it setups test.workingDir per project.

apply plugin: 'java'

sourceSets {
    configurationTest {
        java {
            compileClasspath += main.output + test.compileClasspath + main.compileClasspath
            runtimeClasspath += main.output + test.compileClasspath + main.compileClasspath
            srcDir file('src/configuration-test/java')
        }
    }
}


test {
    useTestNG()
    workingDir = 'src/configuration-test/working_dir'
}