Creating a Jar of test binaries - Gradle

Question

I'm using the latest version of Gradle (milestone 9), and I'm trying to figure out how to create a Jar of all test binaries.

From what I've found on the internet, the following should work:

task packageTests(type: Jar) {   from sourceSets.test.classes } 

However I am getting a -

Cannot get the value of write-only property 'classes' on source set test.

What is the correct way of coding what I'm trying to achieve?

Is the property 'classes' somehow deprecated now ?

Answer 1

Changing sourceSets.test.classes to sourceSets.test.output fixes the problem.

Answer 2

In 2021 there is the Kotlin DSL now, so the latest answer looks like:

tasks.register<Jar>("packageTests") {     from(sourceSets.test.get().output) }