Add some run tests

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/run/t298.scala b/tests/run/t298.scala
new file mode 100644
index 000000000..5728bb6c9
--- /dev/null
+++ b/tests/run/t298.scala
@@ -0,0 +1,17 @@
+object Test extends dotty.runtime.LegacyApp {
+  implicit def anyList[T]: List[T] = Nil
+
+  implicit def intList: List[Int] = 42::24::Nil
+
+  def foo[T](implicit x: T) = x
+
+  val s = foo[List[Int]]
+
+  println(s)  // correct - prints "List(42, 24)"
+
+  implicit def tupleList[T](implicit t: List[T]): List[(T,T)] = t.map(x => (x,x))
+
+  val t = foo[List[Tuple2[Int,Int]]]
+
+  println(t)  // incorrect - prints "List()"
+}