nixos/tests/systemd-sysusers-password-option-override-ordering: clari…

…fy SetCredential check

It was kinda weird to assert that the clear-text password was
in the unit when the hashed password was the effective one.

This change makes it explicit that both are in there and the latter
takes precedence.

(cherry picked from commit da2c826)

nixos/tests/systemd-sysusers-password-option-override-ordering.nix

@@ -5,10 +5,8 @@
 }:
 let
   password = "test";
-  password1 = "test1";
   hashedPassword = "$y$j9T$wLgKY231.8j.ciV2MfEXe1$P0k5j3bCwHgnwW0Ive3w4knrgpiA4TzhCYLAnHvDZ51"; # test
   hashedPassword1 = "$y$j9T$s8TyQJtNImvobhGM5Nlez0$3E8/O8EVGuA4sr1OQmrzi8GrRcy/AEhj454JjAn72A2"; # test
-  hashed_sha512crypt = "$6$ymzs8WINZ5wGwQcV$VC2S0cQiX8NVukOLymysTPn4v1zJoJp3NGyhnqyv/dAf4NWZsBWYveQcj6gEJr4ZUjRBRjM0Pj1L8TCQ8hUUp0"; # meow
 
   hashedPasswordFile = pkgs.writeText "hashed-password" hashedPassword1;
 in
@@ -57,7 +55,9 @@ in
     with subtest("systemd-sysusers.service contains the credentials"):
       sysusers_service = machine.succeed("systemctl cat systemd-sysusers.service")
       print(sysusers_service)
+      # Both are in the unit, but the hashed password takes precedence as shown below.
       assert "SetCredential=passwd.plaintext-password.alice:${password}" in sysusers_service
+      assert "SetCredential=passwd.hashed-password.alice:${hashedPassword}" in sysusers_service
 
     with subtest("Correct mode on the password files"):
       assert machine.succeed("stat -c '%a' /etc/passwd") == "644\n"