keyfork-tests: update to use --to-stdout, use keyforkd properly

crates/tests/src/keyfork/derive/openpgp.rs

@@ -7,18 +7,20 @@ use openpgp::{
     types::KeyFlags,
     Cert,
 };
+use keyforkd::test_util::{run_test, Panicable};
 
 const KEYFORK_BIN: &str = "keyfork";
 
 #[test]
 fn test() {
+    run_test(b"AAAA", |_| {
         let policy = StandardPolicy::new();
-
         let command_output = Command::cargo_bin(KEYFORK_BIN)
             .unwrap()
             .args([
                 "derive",
                 "openpgp",
+                "--to-stdout",
                 "Ryan Heywood (RyanSquared) <ryan@distrust.co>",
             ])
             .assert()
@@ -53,4 +55,7 @@ fn test() {
             key.parts_into_secret().expect("has secret keys");
         }
         assert!(key_formats.is_empty(), "remaining key formats: {key_formats:?}");
+
+        Panicable::Ok(())
+    }).unwrap();
 }