diff -r ec7a4c47ba83 -r 6cc8068797e7 testing4/re1d_test.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing4/re1d_test.scala	Thu Nov 22 17:35:30 2018 +0000
@@ -0,0 +1,41 @@
+
+//import scala.concurrent._
+//import scala.concurrent.duration._
+//import ExecutionContext.Implicits.global
+//import scala.language.postfixOps 
+//import scala.language.reflectiveCalls
+
+
+
+//lazy val f = Future {
+  import CW8a._
+
+  val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
+
+  //println("1")
+  assert(ders(List.fill(5)('a'), EVIL_urban) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b')))
+  //println("2")
+  assert(ders(List('b'), EVIL_urban) == ONE)
+  //println("3")
+  assert(ders(List('b','b'), EVIL_urban) == ZERO)
+  //println("4")
+  assert(matcher(EVIL_urban, "a" * 5 ++ "b") == true)
+  //println("5")
+  assert(matcher(EVIL_urban, "b") == true)
+  //println("6") 
+  assert(matcher(EVIL_urban, "bb") == false)
+  //println("7")
+  assert(matcher("abc", "abc") == true)
+  //println("8")
+  assert(matcher(("ab" | "a") ~ (ONE | "bc"), "abc") == true)
+  //println("9")
+  assert(matcher(ONE, "") == true)
+  //println("10")
+  assert(matcher(ZERO, "") == false)
+  //println("11")
+  assert(matcher(ONE | CHAR('a'), "") == true)
+  //println("12")
+  assert(matcher(ONE | CHAR('a'), "a") == true)
+//}
+
+//Await.result(f, 90 second)