home-manager/tests/modules/programs/yambar/example-settings.nix

{
  programs.yambar = {
    enable = true;
    settings = {
      bar = {
        location = "top";
        height = 26;
        background = "00000066";
        right = [ { clock.content = [ { string.text = "{time}"; } ]; } ];
      };
    };
  };

  nmt.script = ''
    assertFileContent \
      home-files/.config/yambar/config.yml \
      ${builtins.toFile "yambar-expected.yml" ''
        bar:
          background: '00000066'
          height: 26
          location: top
          right:
          - clock:
              content:
              - string:
                  text: '{time}'
      ''}
  '';
}