Extract real exception for munit with Future

[andrzejressel]

When using munit exception in Future, these exceptions are additionally wrapped in ExecutionException. That causes test failure to lose its context:

==> X munit.Example.three  0.063s munit.FailException: scalacheck-effect\munit\shared\src\main\scala\munit\ScalaCheckEffectSuite.scala:52
51:      { case p: PropF[f] =>
52:        super.munitValueTransform(checkPropF[f](p))
53:      }
Failing seed: _6dy7RwgZvdFcKb-_3Y6drdCAgSpLtmNv3gD0gMvqOJ=
You can reproduce this failure by adding the following override to your suite:

  override def scalaCheckInitialSeed = "_6dy7RwgZvdFcKb-_3Y6drdCAgSpLtmNv3gD0gMvqOJ="

Exception raised on property evaluation.
> ARG_0: 0
> ARG_1: 0
> ARG_0_ORIGINAL: 507884176
> ARG_1_ORIGINAL: 1
> Exception: java.util.concurrent.ExecutionException: Boxed Exception
    at munit.Assertions.fail(Assertions.scala:283)
    at munit.Assertions.fail$(Assertions.scala:277)
    at munit.FunSuite.fail(FunSuite.scala:11)
    at munit.ScalaCheckEffectSuite.$anonfun$checkPropF$1(ScalaCheckEffectSuite.scala:69)
    at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:470)
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:175)

This pull request introduces proper exception extraction just like munit itself does:

==> X munit.Example.three  0.078s munit.FailException: scalacheck-effect\munit\shared\src\main\scala\munit\ScalaCheckEffectSuite.scala:60
59:      { case p: PropF[f] =>
60:        super.munitValueTransform(checkPropF[f](p))
61:      }
Failing seed: 2ZteDaQ-7jWeBpOv8dlnj5csn65IF5mqhIJrBwKVbDC=
You can reproduce this failure by adding the following override to your suite:

  override def scalaCheckInitialSeed = "2ZteDaQ-7jWeBpOv8dlnj5csn65IF5mqhIJrBwKVbDC="

Exception raised on property evaluation.
> ARG_0: 0
> ARG_1: 0
> ARG_0_ORIGINAL: -1848315845
> ARG_1_ORIGINAL: -1
> Exception: munit.ComparisonFailException: scalacheck-effect\munit\shared\src\test\scala\munit\Example.scala:47
46:    PropF.forAllF { (a: Int, b: Int) =>
47:      Future { assertEquals(a + b, b + a + 1) }
48:    }
values are not the same
=> Obtained
0
=> Diff (- obtained, + expected)
-0
+1
    at munit.Assertions.fail(Assertions.scala:283)
    at munit.Assertions.fail$(Assertions.scala:277)
    at munit.FunSuite.fail(FunSuite.scala:11)
    at munit.ScalaCheckEffectSuite.$anonfun$checkPropF$2(ScalaCheckEffectSuite.scala:77)
    at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:470)
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:175)

[mpilquist]

Thanks! Could you run prePR to fix the formatting issues?

[andrzejressel]

Fixed