diff --git a/samples/tests/pattern.sh b/samples/tests/pattern.sh
index c44e812..3d2a505 100755
--- a/samples/tests/pattern.sh
+++ b/samples/tests/pattern.sh
@@ -1,2 +1,7 @@
 #!/bin/sh
 ./simple --pattern '*/passing'
+./simple --pattern '!(*/passing)'
+./simple --pattern '[pf]a@(ss|il)ing'
+./simple --pattern '@(+(nest)ed))'
+./simple --pattern '?(*(a|b))'
+./simple --pattern '?(malformed'