javaOptions for custom test configuration with SBT - sbt

Question

I'd like to suspend the forked vm and wait for connection from external debugger only when using the IntegrationDebug config.
With reference to the 'shared sources' section in http://www.scala-sbt.org/1.x/docs/Testing.html, I come up with the following config:
import sbt.Keys._
lazy val IntegrationDebug = config("itd") extend (IntegrationTest)
val scalaTestV = "3.0.4"
lazy val root = project.in(file("."))
.configs(
IntegrationTest,
IntegrationDebug
)
.settings(
Defaults.itSettings,
inConfig(IntegrationDebug)(Defaults.testTasks),
libraryDependencies ++= Seq(
"org.scalactic" %% "scalactic" % scalaTestV,
"org.scalatest" %% "scalatest" % scalaTestV,
),
fork in IntegrationTest := true,
javaOptions in IntegrationDebug += "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8123",
)
However, it doesn't work as expected:
it:test -> vm not suspended (expected)
itd:test -> vm not suspended (unexpected!!)
If I change the scope of the javaOptions to IntegrationTest, i.e.
...
javaOptions in IntegrationTest += "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8123",
...
then
it:test -> vm suspended (unexpected!!)
itd:test -> vm suspended (expected)
Is there anyway to make it work like:
it:test -> vm not suspended
itd:test -> vm suspended

Answer 1

Ok, if I'm not mistaken, I might have found solution for the problem.
Replacing line:
javaOptions in IntegrationDebug += "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8123",
with
testOptions in IntegrationDebug += Tests.Argument("-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=8123")
should do the trick (in this case VM suspended only for the itd:test command).
I know its been a long time, but someone might find this useful. I had practically the same problem and this is what solved it for me.