diff options
author | liu fengyun <liufengyunchina@gmail.com> | 2016-07-21 10:45:14 +0200 |
---|---|---|
committer | liu fengyun <liufengyunchina@gmail.com> | 2016-08-24 10:26:59 +0200 |
commit | cc02243fbe8b7290265e1bdf540e4c2f256df199 (patch) | |
tree | bd83dcabb8de09fa48b9373b9431ef8c481da5ed /tests/patmat/virtpatmat_reach_sealed_unsealed.scala | |
parent | 1a7618f32c6d8060c3a87ce633645440d500aa7a (diff) | |
download | dotty-cc02243fbe8b7290265e1bdf540e4c2f256df199.tar.gz dotty-cc02243fbe8b7290265e1bdf540e4c2f256df199.tar.bz2 dotty-cc02243fbe8b7290265e1bdf540e4c2f256df199.zip |
add test set for exhaustivity and redundancy check
Diffstat (limited to 'tests/patmat/virtpatmat_reach_sealed_unsealed.scala')
-rw-r--r-- | tests/patmat/virtpatmat_reach_sealed_unsealed.scala | 21 |
1 files changed, 21 insertions, 0 deletions
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 |