diff --git a/tests/scripts/loop.hk.out b/tests/scripts/loop.hk.out
index 04124ed..e7a3838 100644
--- a/tests/scripts/loop.hk.out
+++ b/tests/scripts/loop.hk.out
@@ -16,3 +16,10 @@
 8
 9
 10
+0
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diff --git a/tests/scripts/while.hk.err b/tests/scripts/while.hk.err
new file mode 100644
index 0000000..e69de29
diff --git a/tests/scripts/while.hk.out b/tests/scripts/while.hk.out
new file mode 100644
index 0000000..4d0817b
--- /dev/null
+++ b/tests/scripts/while.hk.out
@@ -0,0 +1,21 @@
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