diff --git a/compiler/tests-io/cat.expected b/compiler/tests-io/cat.expected
new file mode 100644
index 0000000000..6376bc646b
--- /dev/null
+++ b/compiler/tests-io/cat.expected
@@ -0,0 +1 @@
+echo ☠
\ No newline at end of file
diff --git a/compiler/tests-io/cat_nat.expected b/compiler/tests-io/cat_nat.expected
new file mode 100644
index 0000000000..6376bc646b
--- /dev/null
+++ b/compiler/tests-io/cat_nat.expected
@@ -0,0 +1 @@
+echo ☠
\ No newline at end of file
diff --git a/compiler/tests-io/md5.expected b/compiler/tests-io/md5.expected
new file mode 100644
index 0000000000..1d196c833b
--- /dev/null
+++ b/compiler/tests-io/md5.expected
@@ -0,0 +1,7 @@
+98a6d248b8d781e302522d18943d632b	some-random-file
+98a6d248b8d781e302522d18943d632b	some-random-file
+98a6d248b8d781e302522d18943d632b	some-random-file
+fcdf6d9d92ef3fd857ae75ee36b30e48	some-random-file
+b61a6d542f9036550ba9c401c80f00ef	-
+b61a6d542f9036550ba9c401c80f00ef	-
+cf30c4ad3850e515e283b3f4e9e3fa3f	-
diff --git a/compiler/tests-io/md5_nat.expected b/compiler/tests-io/md5_nat.expected
new file mode 100644
index 0000000000..1d196c833b
--- /dev/null
+++ b/compiler/tests-io/md5_nat.expected
@@ -0,0 +1,7 @@
+98a6d248b8d781e302522d18943d632b	some-random-file
+98a6d248b8d781e302522d18943d632b	some-random-file
+98a6d248b8d781e302522d18943d632b	some-random-file
+fcdf6d9d92ef3fd857ae75ee36b30e48	some-random-file
+b61a6d542f9036550ba9c401c80f00ef	-
+b61a6d542f9036550ba9c401c80f00ef	-
+cf30c4ad3850e515e283b3f4e9e3fa3f	-