depot/third_party/nixpkgs/nixos/tests/npmrc.nix

import ./make-test-python.nix (
  { ... }:
  let
    machineName = "machine";
    settingName = "prefix";
    settingValue = "/some/path";
  in
  {
    name = "npmrc";

    nodes."${machineName}".programs.npm = {
      enable = true;
      npmrc = ''
        ${settingName} = ${settingValue}
      '';
    };

    testScript = ''
      ${machineName}.start()

      assert ${machineName}.succeed("npm config get ${settingName}") == "${settingValue}\n"
    '';
  }
)