[users] Also test hostname-setting via hostnamed

SEE #1140

src/modules/users/SetHostNameJob.cpp

@@ -83,20 +83,27 @@ ff02::2    ip6-allrouters
                   .failed() );
 }
 
-STATICTEST void
+STATICTEST bool
 setSystemdHostname( const QString& hostname )
 {
     QDBusInterface hostnamed( "org.freedesktop.hostname1",
                               "/org/freedesktop/hostname1",
                               "org.freedesktop.hostname1",
                               QDBusConnection::systemBus() );
+    if ( !hostnamed.isValid() )
+    {
+        cWarning() << "Interface" << hostnamed.interface() << "is not valid.";
+        return false;
+    }
 
+    bool success = true;
     // Static, writes /etc/hostname
     {
         QDBusReply< uint > r = hostnamed.call( "SetStaticHostname", hostname, false );
         if ( !r.isValid() )
         {
             cWarning() << "Could not set hostname through org.freedesktop.hostname1.SetStaticHostname." << r.error();
+            success = false;
         }
     }
     // Dynamic, updates kernel
@@ -105,8 +112,11 @@ setSystemdHostname( const QString& hostname )
         if ( !r.isValid() )
         {
             cWarning() << "Could not set hostname through org.freedesktop.hostname1.SetHostname." << r.error();
+            success = false;
         }
     }
+
+    return success;
 }
 
 

src/modules/users/Tests.cpp

@@ -21,7 +21,7 @@
 // Implementation details
 extern bool setFileHostname( const QString& );
 extern bool writeFileEtcHosts( const QString& );
-extern void setSystemdHostname( const QString& );
+extern bool setSystemdHostname( const QString& );
 
 #include "GlobalStorage.h"
 #include "JobQueue.h"
@@ -44,6 +44,7 @@ private Q_SLOTS:
 
     void testEtcHostname();
     void testEtcHosts();
+    void testHostnamed();
 
     void cleanup();
 
@@ -116,6 +117,17 @@ UsersTests::testEtcHosts()
     QCOMPARE( QFileInfo( m_dir.filePath( "etc/hosts" ) ).size(), 150 + 22 - 2 );
 }
 
+void
+UsersTests::testHostnamed()
+{
+    // Since the service might not be running (e.g. non-systemd systems,
+    // FreeBSD, docker, ..) we're not going to fail a test here.
+    // There's also the permissions problem to think of.
+    QEXPECT_FAIL( "", "Hostname changes are access-controlled", Continue );
+    QVERIFY( setSystemdHostname( "tubophone.calamares.io" ) );
+}
+
+
 void
 UsersTests::cleanup()
 {