diff -r 940b6c68102a -r 72688efdf17c testing3/testing3-bak/knight2a_test.scala
--- a/testing3/testing3-bak/knight2a_test.scala	Thu Oct 31 11:33:02 2019 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,5 +0,0 @@
-
-val f = (x:(Int, Int)) => if (x._1 > 3) Some(List(x)) else None
-
-assert(CW7b.first(List((1,0),(2,0),(3,0),(4,0)), f) == Some(List((4,0))))
-assert(CW7b.first(List((1,0),(2,0),(3,0)), f) == None)