nixpkgs/nixos/tests/pgvecto-rs.nix

{ system ? builtins.currentSystem
, config ? { }
, pkgs ? import ../.. { inherit system config; }
}:

with import ../lib/testing-python.nix { inherit system pkgs; };
with pkgs.lib;

let
  # Test cases from https://docs.pgvecto.rs/use-cases/hybrid-search.html
  test-sql = pkgs.writeText "postgresql-test" ''
    CREATE EXTENSION vectors;

    CREATE TABLE items (
      id bigserial PRIMARY KEY,
      content text NOT NULL,
      embedding vectors.vector(3) NOT NULL -- 3 dimensions
    );

    INSERT INTO items (content, embedding) VALUES
      ('a fat cat sat on a mat and ate a fat rat', '[1, 2, 3]'),
      ('a fat dog sat on a mat and ate a fat rat', '[4, 5, 6]'),
      ('a thin cat sat on a mat and ate a thin rat', '[7, 8, 9]'),
      ('a thin dog sat on a mat and ate a thin rat', '[10, 11, 12]');
  '';

  makePgVectorsTest = postgresqlPackage: makeTest {
    name = "pgvecto-rs-${postgresqlPackage.name}";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ diogotcorreia ];
    };

    nodes.machine = { ... }:
      {
        services.postgresql = {
          enable = true;
          package = postgresqlPackage;
          extraPlugins = ps: with ps; [
            pgvecto-rs
          ];
          settings.shared_preload_libraries = "vectors";
        };
      };

    testScript = { nodes, ... }:
    let
      inherit (nodes.machine.services.postgresql.package.pkgs) pgvecto-rs;
    in
    ''
      def check_count(statement, lines):
          return 'test $(sudo -u postgres psql postgres -tAc "{}"|wc -l) -eq {}'.format(
              statement, lines
          )


      machine.start()
      machine.wait_for_unit("postgresql")

      with subtest("Postgresql with extension vectors is available just after unit start"):
          machine.succeed(check_count("SELECT * FROM pg_available_extensions WHERE name = 'vectors' AND default_version = '${pgvecto-rs.version}';", 1))

      machine.succeed("sudo -u postgres psql -f ${test-sql}")

      machine.succeed(check_count("SELECT content, embedding FROM items WHERE to_tsvector('english', content) @@ 'cat & rat'::tsquery;", 2))

      machine.shutdown()
    '';

  };
in
concatMapAttrs (n: p: { ${n} = makePgVectorsTest p; }) (filterAttrs (n: p: !p.pkgs.pgvecto-rs.meta.broken) pkgs.postgresqlVersions)
// {
  passthru.override = p: makePgVectorsTest p;
}