pkgs/build-support/testers/test/default.nix


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{ testers, lib, pkgs, ... }:
let
  pkgs-with-overlay = pkgs.extend(final: prev: {
    proof-of-overlay-hello = prev.hello;
  });

  dummyVersioning = {
    revision = "test";
    versionSuffix = "test";
    label = "test";
  };

in
lib.recurseIntoAttrs {
  # Check that the wiring of nixosTest is correct.
  # Correct operation of the NixOS test driver should be asserted elsewhere.
  nixosTest-example = pkgs-with-overlay.testers.nixosTest ({ lib, pkgs, figlet, ... }: {
    name = "nixosTest-test";
    nodes.machine = { pkgs, ... }: {
      system.nixos = dummyVersioning;
      environment.systemPackages = [ pkgs.proof-of-overlay-hello figlet ];
    };
    testScript = ''
      machine.succeed("hello | figlet >/dev/console")
    '';
  });
}