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-rw-r--r--tests/test.mew5
1 files changed, 5 insertions, 0 deletions
diff --git a/tests/test.mew b/tests/test.mew
index d0b5685..cf84c97 100644
--- a/tests/test.mew
+++ b/tests/test.mew
@@ -30,6 +30,11 @@
   (test #t (<= 2 (rand 2 6)))
   (test #t (< (rand 2 6) 6)))
 
+(test-group "shuffle"
+  (test #(1 2 3) (sort (shuffle #(3 2 1)) <))
+  (test #f (=? (shuffle #(1 2 3 4 5 6 7 8 9 0))
+               (shuffle #(1 2 3 4 5 6 7 8 9 0)))))
+
 (test-group "range"
   (test '(1 2 3) (into '() (range 1 4)))
   (test '() (into '() (range 4 1)))