From 5146714c6615161fe3e496909f5a157c24d57ea0 Mon Sep 17 00:00:00 2001
From: Julien Lepiller <julien@lepiller.eu>
Date: Sat, 2 Dec 2017 12:15:28 +0100
Subject: [PATCH 2/2] gnu: tests: Add knot test.

* gnu/tests/dns.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
---
 gnu/local.mk      |   1 +
 gnu/tests/dns.scm | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 gnu/tests/dns.scm

diff --git a/gnu/local.mk b/gnu/local.mk
index 2e74c4d81..2fa736523 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -507,6 +507,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/tests/databases.scm			\
   %D%/tests/desktop.scm				\
   %D%/tests/dict.scm				\
+  %D%/tests/dns.scm				\
   %D%/tests/nfs.scm				\
   %D%/tests/install.scm				\
   %D%/tests/mail.scm				\
diff --git a/gnu/tests/dns.scm b/gnu/tests/dns.scm
new file mode 100644
index 000000000..228204e31
--- /dev/null
+++ b/gnu/tests/dns.scm
@@ -0,0 +1,118 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Julien Lepiller <julien@lepiller.eu>
+;;;
+;;; 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 dns)
+  #:use-module (gnu tests)
+  #:use-module (gnu system)
+  #:use-module (gnu system vm)
+  #:use-module (gnu services)
+  #:use-module (gnu services dns)
+  #:use-module (gnu services networking)
+  #:use-module (guix dns)
+  #:use-module (guix gexp)
+  #:use-module (guix store)
+  #:use-module (ice-9 ftw)
+  #:export (%test-knot))
+
+(define %ip4-addr
+;; a random IPv4 address
+  "136.12.251.84")
+
+(define-zone-entries %test-entries
+;; Test entries, with no real data
+;; Name TTL Class Type Data
+  ("@"  ""  "IN"  "A"  "1.2.3.4")
+  ("@"  ""  "IN"  "MX" "10 mail")
+  ("mail" "" "IN" "A"  %ip4-addr))
+
+(define %test-zone
+;; A test zone that uses the fake data
+  (knot-zone-configuration
+    (domain "guix-test.org")
+    (zone (zone-file
+            (origin "guix-test.org")
+            (entries %test-entries)))))
+
+(define %knot-zones
+  (list %test-zone))
+
+(define %knot-os
+  (simple-operating-system
+   (dhcp-client-service)
+   (service knot-service-type
+            (knot-configuration
+              (zones %knot-zones)))))
+
+(define (run-knot-test)
+  "Return a test of an OS running Knot service."
+  (define vm
+    (virtual-machine
+     (operating-system (marionette-operating-system
+                        %knot-os
+                        #:imported-modules '((gnu services herd))))
+     (port-forwardings '((1053 . 53)))))
+
+  (define test
+    (with-imported-modules '((gnu build marionette)
+                             (guix dns))
+      #~(begin
+          (use-modules (guix dns)
+                       (gnu build marionette)
+                       (srfi srfi-64))
+
+          (define marionette
+            (make-marionette '(#$vm)))
+
+          (mkdir #$output)
+          (chdir #$output)
+
+          (test-begin "knot")
+
+          (test-assert "service is running"
+            (marionette-eval
+             '(begin
+                (use-modules (gnu services herd))
+                (start-service 'knot)
+                #t)
+             marionette))
+
+          (test-eq "get the correct answer"
+            #$%ip4-addr
+            (begin
+              (format #t "test:\n")
+              (let* ((query (simple-a-query "mail.guix-test.org"))
+                     (dns (socket AF_INET SOCK_STREAM 0))
+                     (addr (make-socket-address AF_INET INADDR_LOOPBACK 1053)))
+                (connect dns addr)
+                (put-bytevector dns (dns-query->bytevector query #t))
+                (bytevector->ipv4
+                  (dns-record-rdata
+                    (car (dns-query-answers
+                           (bytevector->dns-query
+                             (get-bytevector-n dns 500)))))))))
+
+          (test-end)
+          (exit (= (test-runner-fail-count (test-runner-current)) 0)))))
+
+  (gexp->derivation "knot-test" test))
+
+(define %test-knot
+  (system-test
+   (name "knot")
+   (description "Send a DNS request to a running Knot server.")
+   (value (run-knot-test))))
-- 
2.15.0