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-rw-r--r--tests/ccwl.scm8
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ccwl.scm b/tests/ccwl.scm
index af76372..e64713c 100644
--- a/tests/ccwl.scm
+++ b/tests/ccwl.scm
@@ -167,4 +167,12 @@
   (workflow ()
     (print #:message "Hello")))
 
+(test-assert "step supplied with an unknown key must raise a &ccwl-violation condition"
+  (guard (exception
+          (else (ccwl-violation? exception)))
+    (begin (macroexpand
+            '(workflow ((message #:type string))
+               (print #:message mess)))
+           #f)))
+
 (test-end "ccwl")