--- a/main_testing3/re_test3.scala	Thu Nov 03 11:30:09 2022 +0000
+++ b/main_testing3/re_test3.scala	Tue Nov 08 00:27:47 2022 +0000
@@ -17,5 +17,6 @@
 assert(simp(ALT(ONE | ONE, ONE | ONE)) == ONE)
 assert(simp(ALT(ZERO | CHAR('a'), CHAR('a') | ZERO)) == CHAR('a'))
 assert(simp(ALT(ONE | CHAR('a'), CHAR('a') | ONE)) == ALT(ONE, CHAR('a')))
+assert(simp(ALTs(Nil)) == ZERO)
+assert(simp(SEQs(List(CHAR('a')))) == CHAR('a'))
 
-