diff -r 3db70bdce7a4 -r 44a20e85dd38 marking/re1d_test.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/marking/re1d_test.scala	Wed Jan 11 14:42:46 2017 +0000
@@ -0,0 +1,37 @@
+
+import scala.concurrent._
+import scala.concurrent.duration._
+import ExecutionContext.Implicits.global
+import scala.language.postfixOps 
+
+
+val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
+
+lazy val f = Future {
+  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)