diff --git a/test/testSortReverse.krk b/test/testSortReverse.krk
new file mode 100644
index 0000000..600dc5b
--- /dev/null
+++ b/test/testSortReverse.krk
@@ -0,0 +1,13 @@
+import random
+def __main__(a,n=50000):
+    for j in range(n):
+        a.append(random.random())
+    a.append(42) # Forces heterogynous sorting in CPython
+    a.sort()
+    for j in range(n):
+        assert(a[j] <= a[j+1])
+    a.sort(reverse=True)
+    for j in range(n):
+        assert(a[j] >= a[j+1])
+
+__main__([])
diff --git a/test/testSortReverse.krk.expect b/test/testSortReverse.krk.expect
new file mode 100644
index 0000000..e69de29