Directly configuring a dest case fails at runtime

enum SourceLevel3 {
  case One(int: Int)
  case Two(str: String)
}

enum DestLevel3 {
  case One(int: Long)
   case Two(str: String)
}

val source = SourceLevel3.One(1)
val expected = DestLevel3.One(6)

source.into[DestLevel3].transform(
   Field.const(_.at[DestLevel3.One], DestLevel3.One(2L))
)

result:

sbt:root> ducktapeJVM/run
[info] running io.github.arainko.ducktape.test 
Exception in thread "sbt-bg-threads-7" java.lang.ExceptionInInitializerError
        at io.github.arainko.ducktape.test.main(Mode.scala)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at sbt.Run.invokeMain(Run.scala:144)
        at sbt.Run.execute$1(Run.scala:94)
        at sbt.Run.$anonfun$runWithLoader$5(Run.scala:121)
        at sbt.Run$.executeSuccess(Run.scala:187)
        at sbt.Run.runWithLoader(Run.scala:121)
        at sbt.Defaults$.$anonfun$bgRunTask$6(Defaults.scala:2038)
        at sbt.Defaults$.$anonfun$termWrapper$2(Defaults.scala:1977)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
        at scala.util.Try$.apply(Try.scala:213)
        at sbt.internal.BackgroundThreadPool$BackgroundRunnable.run(DefaultBackgroundJobService.scala:367)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
        at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.RuntimeException: Unhandled case. This is most likely a bug in ducktape.
        at io.github.arainko.ducktape.test$.<clinit>(Mode.scala:191)
        ... 16 more
[success] Total time: 0 s, completed Oct 13, 2024, 12:59:01 PM
sbt:root>

It works if we configure the innermost fields.

Yikes.

arainko / ducktape

Directly configuring a dest case fails at runtime #211