[gvfs] test: Skip smb tests if smbd is not installed

[Ondrej Holy <oholy src gnome org>]

commit 0e78e53866eb88897436e47412c06b67041ef6dd
Author: Ondrej Holy <oholy redhat com>
Date:   Mon May 30 10:23:29 2016 +0200

    test: Skip smb tests if smbd is not installed
    
    Currently smb tests fail if smbd is not installed with the following
    error:
    FileNotFoundError: [Errno 2] No such file or directory: 'smbd'
    
    Smb tests should be skipped if smbd is not installed to avoid test
    suite failures.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734370

 test/gvfs-test |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/test/gvfs-test b/test/gvfs-test
index d9c4593..041bdfb 100755
--- a/test/gvfs-test
+++ b/test/gvfs-test
@@ -51,6 +51,7 @@ except ImportError:
 umockdev_testbed = None
 
 have_twistd = subprocess.call(['which', 'twistd'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 0
+have_smbd = subprocess.call(['which', 'smbd'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 0
 
 def find_alternative(cmds):
     '''Find command in cmds array and return the found alternative'''
@@ -747,6 +748,7 @@ class Ftp(GvfsTestCase):
             self.assertEqual(contents, b'hello world\n')
 
 
+ unittest skipUnless(have_smbd, 'Samba smbd not installed')
 class Smb(GvfsTestCase):
     def setUp(self):
         '''start local smbd as user if we are not in test bed'''