nixpkgs/nixos/tests/marytts.nix

import ./make-test-python.nix (
  { lib, ... }:
  let
    port = 59126;
  in
  {
    name = "marytts";
    meta.maintainers = with lib.maintainers; [ pluiedev ];

    nodes.machine =
      { pkgs, ... }:
      {
        networking.firewall.enable = false;
        networking.useDHCP = false;

        services.marytts = {
          enable = true;
          inherit port;

          voices = [
            (pkgs.fetchzip {
              url = "https://github.com/marytts/voice-bits1-hsmm/releases/download/v5.2/voice-bits1-hsmm-5.2.zip";
              hash = "sha256-1nK+qZxjumMev7z5lgKr660NCKH5FDwvZ9sw/YYYeaA=";
            })
          ];

          userDictionaries = [
            (pkgs.writeTextFile {
              name = "userdict-en_US.txt";
              destination = "/userdict-en_US.txt";
              text = ''
                amogus | @ - ' m @U - g @ s
                Nixpkgs | n I k s - ' p { - k @ - dZ @ s
              '';
            })
          ];
        };
      };

    testScript = ''
      from xml.etree import ElementTree
      from urllib.parse import urlencode

      machine.wait_for_unit("marytts.service")

      with subtest("Checking health of MaryTTS server"):
        machine.wait_for_open_port(${toString port})
        assert 'Mary TTS server' in machine.succeed("curl 'localhost:${toString port}/version'")

      with subtest("Generating example MaryXML"):
        query = urlencode({
          'datatype': 'RAWMARYXML',
          'locale': 'en_US',
        })
        xml = machine.succeed(f"curl 'localhost:${toString port}/exampletext?{query}'")
        root = ElementTree.fromstring(xml)
        text = " ".join(root.itertext()).strip()
        assert text == "Welcome to the world of speech synthesis!"

      with subtest("Detecting custom voice"):
        assert "bits1-hsmm" in machine.succeed("curl 'localhost:${toString port}/voices'")

      with subtest("Finding user dictionary"):
        query = urlencode({
          'INPUT_TEXT': 'amogus',
          'INPUT_TYPE': 'TEXT',
          'OUTPUT_TYPE': 'PHONEMES',
          'LOCALE': 'en_US',
        })
        phonemes = machine.succeed(f"curl 'localhost:${toString port}/process?{query}'")
        phonemes_tree = ElementTree.fromstring(phonemes)
        print([i.get('ph') for i in phonemes_tree.iter('{http://mary.dfki.de/2002/MaryXML}t')])
        assert ["@ - ' m @U - g @ s"] == [i.get('ph') for i in phonemes_tree.iter('{http://mary.dfki.de/2002/MaryXML}t')]

      with subtest("Synthesizing"):
        query = urlencode({
          'INPUT_TEXT': 'Nixpkgs is a collection of over 100,000 software packages that can be installed with the Nix package manager.',
          'INPUT_TYPE': 'TEXT',
          'OUTPUT_TYPE': 'AUDIO',
          'AUDIO': 'WAVE_FILE',
          'LOCALE': 'en_US',
        })
        machine.succeed(f"curl 'localhost:${toString port}/process?{query}' -o ./audio.wav")
        machine.copy_from_vm("./audio.wav")
    '';
  }
)