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-rw-r--r--Test/dafny3/Filter.dfy3
1 files changed, 3 insertions, 0 deletions
diff --git a/Test/dafny3/Filter.dfy b/Test/dafny3/Filter.dfy
index 4b39876a..0d9a7231 100644
--- a/Test/dafny3/Filter.dfy
+++ b/Test/dafny3/Filter.dfy
@@ -1,3 +1,6 @@
+// RUN: %dafny /compile:0 /dprint:"%t.dprint" "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
codatatype Stream<T> = Cons(head: T, tail: Stream);
function Tail(s: Stream, n: nat): Stream