nixpkgs/nixos/tests/nginx-unix-socket.nix

import ./make-test-python.nix ({ pkgs, ... }:
let
  nginxSocketPath = "/var/run/nginx/test.sock";
in
{
  name = "nginx-unix-socket";

  nodes = {
    webserver = { pkgs, lib, ... }: {
      services.nginx = {
        enable = true;
        virtualHosts.localhost = {
          serverName = "localhost";
          listen = [{ addr = "unix:${nginxSocketPath}"; }];
          locations."/test".return = "200 'foo'";
        };
      };
    };
  };

  testScript = ''
    webserver.wait_for_unit("nginx")
    webserver.wait_for_open_unix_socket("${nginxSocketPath}")

    webserver.succeed("curl --fail --silent --unix-socket '${nginxSocketPath}' http://localhost/test | grep '^foo$'")
  '';
})