Added Option#fold.

1 files changed, 19 insertions, 0 deletions

diff --git a/test/files/run/option-fold.scala b/test/files/run/option-fold.scala
new file mode 100644
index 0000000000..d554ba4f9b
--- /dev/null
+++ b/test/files/run/option-fold.scala
@@ -0,0 +1,19 @@
+object Test {
+  sealed class A
+  case object B extends A
+  case class C(x: Int) extends A
+  
+  def f[T](x: Option[T]) = x.fold(List.empty[T])(List(_))
+  def g(x: Option[A]) = x.fold(-1) {
+    case B    => 0
+    case C(x) => x
+  }
+
+  def main(args: Array[String]): Unit = {
+    println(f(None))
+    println(f(Some(5)))
+    println(g(None))
+    println(g(Some(B)))
+    println(g(Some(C(1))))
+  }
+}