services: bitlbee: Add test.

* gnu/tests/messaging.scm (run-bitlbee-test): New procedure.
(%test-bitlbee): New variable.

gnu/tests/messaging.scm

@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
-;;; Copyright © 2017 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2017, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -27,7 +27,9 @@
   #:use-module (gnu packages messaging)
   #:use-module (guix gexp)
   #:use-module (guix store)
-  #:export (%test-prosody))
+  #:use-module (guix modules)
+  #:export (%test-prosody
+            %test-bitlbee))
 
 (define (run-xmpp-test name xmpp-service pid-file create-account)
   "Run a test of an OS running XMPP-SERVICE, which writes its PID to PID-FILE."
@@ -158,3 +160,86 @@
                            (service prosody-service-type config)
                            (prosody-configuration-pidfile config)
                            %create-prosody-account)))))
+
+
+;;;
+;;; BitlBee.
+;;;
+
+(define (run-bitlbee-test)
+  (define os
+    (marionette-operating-system
+     (simple-operating-system (dhcp-client-service)
+                              (service bitlbee-service-type
+                                       (bitlbee-configuration
+                                        (interface "0.0.0.0"))))
+     #:imported-modules (source-module-closure
+                         '((gnu services herd)))))
+
+  (define vm
+    (virtual-machine
+     (operating-system os)
+     (port-forwardings `((6667 . 6667)))))
+
+  (define test
+    (with-imported-modules '((gnu build marionette))
+      #~(begin
+          (use-modules (ice-9 rdelim)
+                       (srfi srfi-64)
+                       (gnu build marionette))
+
+          (define marionette
+            (make-marionette (list #$vm)))
+
+          (mkdir #$output)
+          (chdir #$output)
+
+          (test-begin "bitlbee")
+
+          (test-eq "service started"
+            'running!
+            (marionette-eval
+             '(begin
+                (use-modules (gnu services herd))
+                (start-service 'bitlbee)
+                'running!)
+             marionette))
+
+          (test-equal "valid PID"
+            #$(file-append bitlbee "/sbin/bitlbee")
+            (marionette-eval
+             '(begin
+                (use-modules (srfi srfi-1)
+                             (gnu services herd))
+
+                (let ((bitlbee
+                       (find (lambda (service)
+                               (equal? '(bitlbee)
+                                       (live-service-provision service)))
+                             (current-services))))
+                  (and (pk 'bitlbee-service bitlbee)
+                       (let ((pid (live-service-running bitlbee)))
+                         (readlink (string-append "/proc/"
+                                                  (number->string pid)
+                                                  "/exe"))))))
+             marionette))
+
+          (test-assert "connect"
+            (let* ((address (make-socket-address AF_INET INADDR_LOOPBACK
+                                                 6667))
+                   (sock    (socket AF_INET SOCK_STREAM 0)))
+              (connect sock address)
+              ;; See <https://tools.ietf.org/html/rfc1459>.
+              (->bool (string-contains (pk 'message (read-line sock))
+                                       "BitlBee"))))
+
+          (test-end)
+          (exit (= (test-runner-fail-count (test-runner-current)) 0)))))
+
+  (gexp->derivation "bitlbee-test" test))
+
+(define %test-bitlbee
+  (system-test
+   (name "bitlbee")
+   (description "Connect to a BitlBee IRC server.")
+   (value (run-bitlbee-test))))