Explicitly set the JVM target

[sheu]

[sheu]

This is meant to fix #579

[AlexanderPrendota]

Hi, @sheu.

Nice fix, thank you! You're right :)

Could you please add a test please?

[AlexanderPrendota]

@sheu hi, any updates? :)

[sheu]

@sheu hi, any updates? :)

I had a hard time figuring out how best to test it. I will push the testcase today.

[sheu]

Finally added the test case but that meant that I had to change my solution to make it testable.

[AlexanderPrendota]

Hmm, maybe we can just put some code and run it? like

 @Test
  fun `jvm target 11 test`() {
    run(
      code = "fun main() {\n // put some code here \n}",
      contains = "the result of the code"
    )
  }

[AlexanderPrendota]

@sheu hi, let's take your first version to the master?

[hfhbd]

Why do you don't set-up the jvmtoolchain using kotlin.jvmtoolchain(11)? This will fix your problems because Gradle sets the correct attributes and the jdk.