diff --git a/nix/tests/expected/pgsodium.out b/nix/tests/expected/pgsodium.out
new file mode 100644
index 000000000..418bf2dbb
--- /dev/null
+++ b/nix/tests/expected/pgsodium.out
@@ -0,0 +1,9 @@
+select
+  status
+from
+  pgsodium.create_key();
+ status 
+--------
+ valid
+(1 row)
+
diff --git a/nix/tests/sql/pgsodium.sql b/nix/tests/sql/pgsodium.sql
new file mode 100644
index 000000000..cd3c3821c
--- /dev/null
+++ b/nix/tests/sql/pgsodium.sql
@@ -0,0 +1,4 @@
+select
+  status
+from
+  pgsodium.create_key();