Add a "test light" mode for travis

Sadly, travis does not currently offer any distribution with systemd, so we
can't currently test our regular install routine. To still have some amount of
testing, this patch adds a special 'noinstall' test mode, which only exercises
`mediawiki-containers restart`.

.travis.yml

@@ -7,7 +7,9 @@ services:
 sudo: required
 
 # We override what to do anyway.
-script: sudo ./test.sh
+# Sadly, Travis does not have an image with systemd yet, so we can't test a
+# full install.
+script: sudo ./test.sh noinstall
 
 notifications:
   irc:

test.sh

@@ -50,37 +50,48 @@ export AUTO_UPDATE=true
 
 CHECKOUT=$(pwd)
 
-cd /tmp
-
-if [ -d /srv/mediawiki-containers ];then
-    echowarn "Found existing /srv/mediawiki-containers checkout."
-    read -p "Delete it? (y/[n]): " DELETE_IT
-    if [ "$DELETE_IT" == 'y' ];then
-        rm -rf /srv/mediawiki-containers
-    else
-        echoerror "Aborted test as /srv/mediawiki-containers exists."
-        exit 1
+test_install() {
+    cd /tmp
+
+    if [ -d /srv/mediawiki-containers ];then
+        echowarn "Found existing /srv/mediawiki-containers checkout."
+        read -p "Delete it? (y/[n]): " DELETE_IT
+        if [ "$DELETE_IT" == 'y' ];then
+            rm -rf /srv/mediawiki-containers
+        else
+            echoerror "Aborted test as /srv/mediawiki-containers exists."
+            exit 1
+        fi
     fi
-fi
-
-# Trick the installer into testing the new code, rather than master.
-git clone "$CHECKOUT" /srv/mediawiki-containers
+
+    # Trick the installer into testing the new code, rather than master.
+    git clone "$CHECKOUT" /srv/mediawiki-containers
 
-cat "$CHECKOUT/mediawiki-containers" | bash -s install
+    cat "$CHECKOUT/mediawiki-containers" | bash -s install
 
-check_service
+    check_service
 
-echoinfo "Restart the service"
-service mediawiki-containers restart
+    echoinfo "Restart the service"
+    service mediawiki-containers restart
 
-sleep 10
+    sleep 10
 
-check_service
+    check_service
 
-echoinfo "Exercise the automatic updater"
-/etc/cron.daily/mediawiki-containers
+    echoinfo "Exercise the automatic updater"
+    /etc/cron.daily/mediawiki-containers
 
-check_service
+    check_service
+}
+
+if [ "$1" == 'noinstall' ];then
+    echoinfo "noinstall option set, only testing 'mediawiki-containers start'".
+    ./mediawiki-containers restart &
+    sleep 120
+    check_service
+else
+    test_install
+fi
 
 echoinfo "Congratulations, all is looking good!"
 exit 0