Add a test

Author: liufengyun

tests/init-global/warn/Color.scala

@@ -0,0 +1,10 @@
+enum Color:
+  case None, White, Black
+
+enum Player:
+  case Black, White
+
+  val color: Color =
+    if this == Player.Black  // warn
+    then Color.Black
+    else Color.White