tests: Honor the return value of 'start-service'.

Since commit dc7b3e56337ee9d8dcd8fe7d5cab71ef536d024f, 'start-service' returns
the Shepherd's representation of the service as a sexp, and '#f' if the
service fails to start.  Also, it doesn't throw an exception when the service
fails to start, so relying on an exception instead of relying on its return
value is a false positive.

* gnu/tests/base.scm (run-nss-mdns-test): Split tests so to check the return
value of 'start-service'.
(run-mcron-test, run-nss-mdns-test): Use 'test-assert' with the return value
of 'start-service'.
* gnu/tests/admin.scm (run-tailon-test): Idem.
* gnu/tests/dict.scm (run-dicod-test): Idem.
* gnu/tests/mail.scm (run-opensmtpd-test, run-exim-test, run-dovecot-test):
Idem.
* gnu/tests/messaging.scm (run-xmpp-test, run-bitlbee-test): Idem.
* gnu/tests/nfs.scm (run-nfs-test): Idem.
* gnu/tests/rsync.scm (run-rsync-test): Idem.
* gnu/tests/ssh.scm (run-ssh-test): Idem.
* gnu/tests/version-control.scm (run-cgit-test, run-git-http-test): Idem.
* gnu/tests/web.scm (run-php-fpm-test): Idem.

10 files changed, 71 insertions, 82 deletions

diff --git a/gnu/tests/admin.scm b/gnu/tests/admin.scm
index 3c7deb5426..a5abbe9ad4 100644
--- a/gnu/tests/admin.scm
+++ b/gnu/tests/admin.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -74,13 +75,11 @@ HTTP-PORT."
 
           (test-begin "tailon")
 
-          (test-eq "service running"
-            'running!
+          (test-assert "service running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'tailon)
-                'running!)
+                (start-service 'tailon))
              marionette))
 
           (define* (retry-on-error f #:key times delay)
diff --git a/gnu/tests/base.scm b/gnu/tests/base.scm
index 3faeddef6c..05c846264d 100644
--- a/gnu/tests/base.scm
+++ b/gnu/tests/base.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -517,13 +518,11 @@ in a loop.  See <http://bugs.gnu.org/26931>.")
 
           (test-begin "mcron")
 
-          (test-eq "service running"
-            'running!
+          (test-assert "service running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'mcron)
-                'running!)
+                (start-service 'mcron))
              marionette))
 
           ;; Make sure root's mcron job runs, has its cwd set to "/root", and
@@ -619,32 +618,43 @@ in a loop.  See <http://bugs.gnu.org/26931>.")
 
           (test-begin "avahi")
 
-          (test-assert "wait for services"
+          (test-assert "nscd PID file is created"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
+                (start-service 'nscd))
+             marionette))
+
+          (test-assert "nscd is listening on its socket"
+            (marionette-eval
+             ;; XXX: Work around a race condition in nscd: nscd creates its
+             ;; PID file before it is listening on its socket.
+             '(let ((sock (socket PF_UNIX SOCK_STREAM 0)))
+                (let try ()
+                  (catch 'system-error
+                    (lambda ()
+                      (connect sock AF_UNIX "/var/run/nscd/socket")
+                      (close-port sock)
+                      (format #t "nscd is ready~%")
+                      #t)
+                    (lambda args
+                      (format #t "waiting for nscd...~%")
+                      (usleep 500000)
+                      (try)))))
+             marionette))
+
+          (test-assert "avahi is running"
+            (marionette-eval
+             '(begin
+                (use-modules (gnu services herd))
+                (start-service 'avahi-daemon))
+             marionette))
 
-                (start-service 'nscd)
-
-                ;; XXX: Work around a race condition in nscd: nscd creates its
-                ;; PID file before it is listening on its socket.
-                (let ((sock (socket PF_UNIX SOCK_STREAM 0)))
-                  (let try ()
-                    (catch 'system-error
-                      (lambda ()
-                        (connect sock AF_UNIX "/var/run/nscd/socket")
-                        (close-port sock)
-                        (format #t "nscd is ready~%"))
-                      (lambda args
-                        (format #t "waiting for nscd...~%")
-                        (usleep 500000)
-                        (try)))))
-
-                ;; Wait for the other useful things.
-                (start-service 'avahi-daemon)
-                (start-service 'networking)
-
-                #t)
+          (test-assert "network is up"
+            (marionette-eval
+             '(begin
+                (use-modules (gnu services herd))
+                (start-service 'networking))
              marionette))
 
           (test-equal "avahi-resolve-host-name"
diff --git a/gnu/tests/dict.scm b/gnu/tests/dict.scm
index 4431e37dc1..dd60ffd464 100644
--- a/gnu/tests/dict.scm
+++ b/gnu/tests/dict.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017, 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -84,13 +85,11 @@
           (test-begin "dicod")
 
           ;; Wait for the service to be started.
-          (test-eq "service is running"
-            'running!
+          (test-assert "service is running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'dicod)
-                'running!)
+                (start-service 'dicod))
              marionette))
 
           ;; Wait until dicod is actually listening.
diff --git a/gnu/tests/mail.scm b/gnu/tests/mail.scm
index 4de13b8684..5677969fac 100644
--- a/gnu/tests/mail.scm
+++ b/gnu/tests/mail.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2017 Carlo Zancanaro <carlo@zancanaro.id.au>
 ;;; Copyright © 2017 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -84,8 +85,7 @@ accept from any for local deliver to mbox
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'smtpd)
-                #t)
+                (start-service 'smtpd))
              marionette))
 
           (test-assert "mbox is empty"
@@ -224,8 +224,7 @@ acl_check_data:
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'exim)
-                #t)
+                (start-service 'exim))
              marionette))
 
           (sleep 1) ;; give the service time to start talking
@@ -330,13 +329,11 @@ Subject: Hello Nice to meet you!")
           (test-begin "dovecot")
 
           ;; Wait for dovecot to be up and running.
-          (test-eq "dovecot running"
-            'running!
+          (test-assert "dovecot running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'dovecot)
-                'running!)
+                (start-service 'dovecot))
              marionette))
 
           ;; Check Dovecot service's PID.
diff --git a/gnu/tests/messaging.scm b/gnu/tests/messaging.scm
index f17dfe6265..f5f99b9f56 100644
--- a/gnu/tests/messaging.scm
+++ b/gnu/tests/messaging.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
+;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
 ;;; Copyright © 2017, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -102,13 +102,11 @@
           (test-begin "xmpp")
 
           ;; Wait for XMPP service to be up and running.
-          (test-eq "service running"
-            'running!
+          (test-assert "service running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'xmpp-daemon)
-                'running!)
+                (start-service 'xmpp-daemon))
              marionette))
 
           ;; Check XMPP service's PID.
@@ -196,13 +194,11 @@
 
           (test-begin "bitlbee")
 
-          (test-eq "service started"
-            'running!
+          (test-assert "service started"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'bitlbee)
-                'running!)
+                (start-service 'bitlbee))
              marionette))
 
           (test-equal "valid PID"
diff --git a/gnu/tests/nfs.scm b/gnu/tests/nfs.scm
index d58cf7aefd..140f03779b 100644
--- a/gnu/tests/nfs.scm
+++ b/gnu/tests/nfs.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2016 John Darrington <jmd@gnu.org>
 ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -94,13 +95,11 @@
           (test-begin "rpc-daemon")
 
           ;; Wait for the rpcbind daemon to be up and running.
-          (test-eq "RPC service running"
-            'running!
+          (test-assert "RPC service running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'rpcbind-daemon)
-                'running!)
+                (start-service 'rpcbind-daemon))
              marionette))
 
           ;; Check the socket file and that the service is still running.
diff --git a/gnu/tests/rsync.scm b/gnu/tests/rsync.scm
index c97836788b..a6f8fa2bd1 100644
--- a/gnu/tests/rsync.scm
+++ b/gnu/tests/rsync.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
+;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -59,13 +60,11 @@ PORT."
           (test-begin "rsync")
 
           ;; Wait for rsync to be up and running.
-          (test-eq "service running"
-            'running!
+          (test-assert "service running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'rsync)
-                'running!)
+                (start-service 'rsync))
              marionette))
 
           ;; Make sure the PID file is created.
diff --git a/gnu/tests/ssh.scm b/gnu/tests/ssh.scm
index 9247a43e6d..2e40122add 100644
--- a/gnu/tests/ssh.scm
+++ b/gnu/tests/ssh.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
+;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
 ;;; Copyright © 2017 Marius Bakke <mbakke@fastmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -111,13 +111,11 @@ root with an empty password."
             (test-begin "ssh-daemon")
 
             ;; Wait for sshd to be up and running.
-            (test-eq "service running"
-              'running!
+            (test-assert "service running"
               (marionette-eval
                '(begin
                   (use-modules (gnu services herd))
-                  (start-service 'ssh-daemon)
-                  'running!)
+                  (start-service 'ssh-daemon))
                marionette))
 
             ;; Check sshd's PID file.
diff --git a/gnu/tests/version-control.scm b/gnu/tests/version-control.scm
index 8024739734..3b935a1b48 100644
--- a/gnu/tests/version-control.scm
+++ b/gnu/tests/version-control.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017, 2018 Oleg Pykhalov <go.wigust@gmail.com>
 ;;; Copyright © 2017, 2018 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
+;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -147,23 +147,19 @@ HTTP-PORT."
              marionette))
 
           ;; Wait for nginx to be up and running.
-          (test-eq "nginx running"
-            'running!
+          (test-assert "nginx running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'nginx)
-                'running!)
+                (start-service 'nginx))
              marionette))
 
           ;; Wait for fcgiwrap to be up and running.
-          (test-eq "fcgiwrap running"
-            'running!
+          (test-assert "fcgiwrap running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'fcgiwrap)
-                'running!)
+                (start-service 'fcgiwrap))
              marionette))
 
           ;; Make sure the PID file is created.
@@ -272,13 +268,11 @@ HTTP-PORT."
           (test-begin "git-http")
 
           ;; Wait for nginx to be up and running.
-          (test-eq "nginx running"
-            'running!
+          (test-assert "nginx running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'nginx)
-                'running!)
+                (start-service 'nginx))
              marionette))
 
           ;; Make sure Git test repository is created.
diff --git a/gnu/tests/web.scm b/gnu/tests/web.scm
index a6bf6efcfe..73d502dd0e 100644
--- a/gnu/tests/web.scm
+++ b/gnu/tests/web.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
-;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
+;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
 ;;; Copyright © 2018 Pierre-Antoine Rouby <pierre-antoine.rouby@inria.fr>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -245,13 +245,11 @@ HTTP-PORT, along with php-fpm."
                      ((pid) (number? pid))))))
              marionette))
 
-          (test-eq "nginx running"
-            'running!
+          (test-assert "nginx running"
             (marionette-eval
              '(begin
                 (use-modules (gnu services herd))
-                (start-service 'nginx)
-                'running!)
+                (start-service 'nginx))
              marionette))
 
           (test-equal "http-get"