Enable more tests that pass

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/run/lift-and-unlift.scala b/tests/run/lift-and-unlift.scala
new file mode 100644
index 000000000..9cd85666e
--- /dev/null
+++ b/tests/run/lift-and-unlift.scala
@@ -0,0 +1,27 @@
+import Function.unlift
+
+object Test {
+  def evens1(x: Int) = if (x % 2 == 0) Some(x) else None
+  val evens2: PartialFunction[Int, Int] = {
+    case x if x % 2 == 0  => x
+  }
+
+  def main(args: Array[String]): Unit = {
+    val f1 = evens1 _
+    val f2 = evens2.lift
+
+    assert(1 to 10 forall (x => f1(x) == f2(x)))
+
+    val f3 = unlift(f1)
+    val f4 = unlift(f2)
+
+    assert(1 to 10 forall { x =>
+      if (!f3.isDefinedAt(x)) !f4.isDefinedAt(x)
+      else f3(x) == f4(x)
+    })
+
+    assert(f1 eq f3.lift)
+    assert(f4 eq unlift(f2))
+    assert(f4 eq evens2)
+  }
+}