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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu tests dict)
  #:use-module (gnu tests)
  #:use-module (gnu system)
  #:use-module (gnu system nss)
  #:use-module (gnu system vm)
  #:use-module (gnu services)
  #:use-module (gnu services dict)
  #:use-module (gnu services networking)
  #:use-module (gnu packages wordnet)
  #:use-module (guix gexp)
  #:use-module (guix store)
  #:use-module (guix monads)
  #:use-module (guix packages)
  #:use-module (guix modules)
  #:export (%test-dicod))

(define %dicod-os
  (simple-operating-system
   (dhcp-client-service)
   (service dicod-service-type
            (dicod-configuration
             (interfaces '("0.0.0.0"))
             (handlers (list (dicod-handler
                              (name "wordnet")
                              (module "dictorg")
                              (options
                               ;; XXX: Not useful since WordNet does not
                               ;; provide DICT-formatted data?
                               (list #~(string-append "dbdir=" #$wordnet))))))
             (databases (list (dicod-database
                               (name "wordnet")
                               (complex? #t)
                               (handler "wordnet")
                               (options '("database=wn")))
                              %dicod-database:gcide))))))

(define* (run-dicod-test)
  "Run tests of 'dicod-service-type'."
  (mlet* %store-monad ((os -> (marionette-operating-system
                               %dicod-os
                               #:imported-modules
                               (source-module-closure '((gnu services herd)))))
                       (command (system-qemu-image/shared-store-script
                                 os #:graphic? #f)))
    (define test
      (with-imported-modules '((gnu build marionette))
        #~(begin
            (use-modules (ice-9 rdelim)
                         (ice-9 regex)
                         (srfi srfi-64)
                         (gnu build marionette))
            (define marionette
              ;; Forward the guest's DICT port to local port 8000.
              (make-marionette (list #$command "-net"
                                     "user,hostfwd=tcp::8000-:2628")))

            (define %dico-socket
              (socket PF_INET SOCK_STREAM 0))

            (mkdir #$output)
            (chdir #$output)

            (test-begin "dicod")

            ;; Wait for the service to be started.
            (test-eq "service is running"
              'running!
              (marionette-eval
               '(begin
                  (use-modules (gnu services herd))
                  (start-service 'dicod)
                  'running!)
               marionette))

            ;; Wait until dicod is actually listening.
            ;; TODO: Use a PID file instead.
            (test-assert "connect inside"
              (marionette-eval
               '(begin
                  (use-modules (ice-9 rdelim))
                  (let ((sock (socket PF_INET SOCK_STREAM 0)))
                    (let loop ((i 0))
                      (pk 'try i)
                      (catch 'system-error
                        (lambda ()
                          (connect sock AF_INET INADDR_LOOPBACK 2628))
                        (lambda args
                          (pk 'connection-error args)
                          (when (< i 20)
                            (sleep 1)
                            (loop (+ 1 i))))))
                    (read-line sock 'concat)))
               marionette))

            (test-assert "connect"
              (let ((addr (make-socket-address AF_INET INADDR_LOOPBACK 8000)))
                (connect %dico-socket addr)
                (read-line %dico-socket 'concat)))

            (test-equal "CLIENT"
              "250 ok\r\n"
              (begin
                (display "CLIENT \"GNU Guile\"\r\n" %dico-socket)
                (read-line %dico-socket 'concat)))

            (test-assert "DEFINE"
              (begin
                (display "DEFINE ! hello\r\n" %dico-socket)
                (display "QUIT\r\n" %dico-socket)
                (let ((result (read-string %dico-socket)))
                  (and (string-contains result "gcide")
                       (string-contains result "hello")
                       result))))

            (test-end)
            (exit (= (test-runner-fail-count (test-runner-current)) 0)))))

    (gexp->derivation "dicod" test)))

(define %test-dicod
  (system-test
   (name "dicod")
   (description "Connect to the dicod DICT server.")
   (value (run-dicod-test))))