From cc02243fbe8b7290265e1bdf540e4c2f256df199 Mon Sep 17 00:00:00 2001 From: liu fengyun Date: Thu, 21 Jul 2016 10:45:14 +0200 Subject: add test set for exhaustivity and redundancy check --- tests/patmat/virtpatmat_reach_sealed_unsealed.scala | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 tests/patmat/virtpatmat_reach_sealed_unsealed.scala (limited to 'tests/patmat/virtpatmat_reach_sealed_unsealed.scala') diff --git a/tests/patmat/virtpatmat_reach_sealed_unsealed.scala b/tests/patmat/virtpatmat_reach_sealed_unsealed.scala new file mode 100644 index 000000000..13911dbd7 --- /dev/null +++ b/tests/patmat/virtpatmat_reach_sealed_unsealed.scala @@ -0,0 +1,21 @@ +sealed abstract class X +sealed case class A(x: Int) extends X + +// test reachability on mixed sealed / non-sealed matches +object Test extends App { + val B: X = A(0) + val C: X = A(1) + + // all cases are reachable and the match is exhaustive + (C: X) match { + case B => + case C => + case A(_) => + } + + (true: Boolean) match { case true => } // not exhaustive, but reachable + (true: Boolean) match { case true => case false => } // exhaustive, reachable + (true: Boolean) match { case true => case false => case _ => } // exhaustive, last case is unreachable + (true: Boolean) match { case true => case false => case _: Boolean => } // exhaustive, last case is unreachable + (true: Boolean) match { case true => case false => case _: Any => } // exhaustive, last case is unreachable +} \ No newline at end of file -- cgit v1.2.3