tests: force qubes-vm-update to try updating

.pylintrc

@@ -1,6 +1,7 @@
 [MASTER]
 persistent=no
 ignore=tests
+init-hook="import astroid.bases; astroid.bases.POSSIBLE_PROPERTIES.add('stateless_property')"
 
 [MESSAGES CONTROL]
 # abstract-class-little-used: see http://www.logilab.org/ticket/111138

qubes/tests/integ/vm_update.py

@@ -460,6 +460,7 @@ def run_qubes_vm_update_and_assert(self, *, expected_ret_codes, options):
                 asyncio.create_subprocess_exec(
                     'qubes-vm-update',
                     "--targets", self.testvm1.name,
+                    "--force-update",
                     *options,
                     stdout=f_log,
                     stderr=subprocess.STDOUT

qubes/vm/qubesvm.py

@@ -2143,7 +2143,7 @@ def is_qrexec_running(self, stubdom=False):
             :py:obj:`False` otherwise.
         :rtype: bool
         """
-        if self.xid < 0:  # pylint: disable=comparison-with-callable
+        if self.xid < 0:
             return False
         name = self.name + '-dm' if stubdom else self.name
         return os.path.exists('/var/run/qubes/qrexec.%s' % name)
@@ -2281,7 +2281,6 @@ def start_time(self):
     def icon(self):
         """freedesktop icon name, suitable for use in
         :py:meth:`PyQt4.QtGui.QIcon.fromTheme`"""
-        #  pylint: disable=comparison-with-callable
         raw_icon_name = self.label.name
         if self.klass == 'TemplateVM':
             return 'templatevm-' + raw_icon_name

test-packages/qubesdb.py

@@ -0,0 +1,18 @@
+class QubesDB:
+    def read(self, key):
+        return b'testvm'
+
+    def write(self, key, value):
+        pass
+
+    def rm(self, key):
+        pass
+
+    def list(self, path):
+        return ['test']
+
+class Error(Exception):
+    pass
+
+class DisconnectedError(Error):
+    pass