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iotest: fix python based IO tests 

The previous commit refactoring iotests.py:

  commit 6661397446
  Author: Daniel P. Berrange <berrange@redhat.com>
  Date:   Wed Jul 20 14:23:10 2016 +0100

    scripts: refactor the VM class in iotests for reuse

was not properly tested and included a number of broken
bits.

 - The 'event_match' method was not moved into qemu.py
 - The 'self._args' list parameter in QEMUMachine needs
   to be copied otherwise modifications will affect the
   global 'qemu_opts' variable in iotests.py
 - The QEMUQtestMachine class methods had inverted
   parameter order for the super() calls
 - The QEMUQtestMachine class forgot to add
   '-machine accel=qtest'
 - The QEMUQtestMachine class constructor needs to set
   a default 'name' value before using it as it may
   be None
 - The QEMUQtestMachine class constructor needs to use
   named parameters when calling the super constructor
   as it is leaving out some positional parameters.
 - The 'qemu_prog' variable should be a string not a
   list in iotests.py
 - The VM classs constructor needs to use named
   parameters when calling the super constructor
   as it is leaving out some positional parameters.
 - The path to the socket-scm-helper needs to be
   passed into the QEMUMachine class

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1469549767-27249-1-git-send-email-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Daniel P. Berrange 2016-07-26 17:16:07 +01:00 committed by Max Reitz
parent c7c4cf498f
commit 4c44b4a4c8
3 changed files with 42 additions and 33 deletions
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32
scripts/qemu.py
View File

@ -24,7 +24,7 @@ class QEMUMachine(object):
'''A QEMU VM'''
def __init__(self, binary, args=[], wrapper=[], name=None, test_dir="/var/tmp",
monitor_address=None, debug=False):
monitor_address=None, socket_scm_helper=None, debug=False):
if name is None:
name = "qemu-%d" % os.getpid()
if monitor_address is None:
@ -33,10 +33,11 @@ def __init__(self, binary, args=[], wrapper=[], name=None, test_dir="/var/tmp",
self._qemu_log_path = os.path.join(test_dir, name + ".log")
self._popen = None
self._binary = binary
self._args = args
self._args = list(args) # Force copy args in case we modify them
self._wrapper = wrapper
self._events = []
self._iolog = None
self._socket_scm_helper = socket_scm_helper
self._debug = debug
# This can be used to add an unused monitor instance.
@ -60,11 +61,13 @@ def add_fd(self, fd, fdset, opaque, opts=''):
def send_fd_scm(self, fd_file_path):
# In iotest.py, the qmp should always use unix socket.
assert self._qmp.is_scm_available()
bin = socket_scm_helper
if os.path.exists(bin) == False:
print "Scm help program does not present, path '%s'." % bin
if self._socket_scm_helper is None:
print >>sys.stderr, "No path to socket_scm_helper set"
return -1
fd_param = ["%s" % bin,
if os.path.exists(self._socket_scm_helper) == False:
print >>sys.stderr, "%s does not exist" % self._socket_scm_helper
return -1
fd_param = ["%s" % self._socket_scm_helper,
"%d" % self._qmp.get_sock_fd(),
"%s" % fd_file_path]
devnull = open('/dev/null', 'rb')
@ -183,6 +186,23 @@ def get_qmp_events(self, wait=False):
return events
def event_wait(self, name, timeout=60.0, match=None):
# Test if 'match' is a recursive subset of 'event'
def event_match(event, match=None):
if match is None:
return True
for key in match:
if key in event:
if isinstance(event[key], dict):
if not event_match(event[key], match[key]):
return False
elif event[key] != match[key]:
return False
else:
return False
return True
# Search cached events
for event in self._events:
if (event['event'] == name) and event_match(event, match):

19
scripts/qtest.py
View File

@ -79,25 +79,30 @@ def settimeout(self, timeout):
class QEMUQtestMachine(qemu.QEMUMachine):
'''A QEMU VM'''
def __init__(self, binary, args=[], name=None, test_dir="/var/tmp"):
super(self, QEMUQtestMachine).__init__(binary, args, name, test_dir)
def __init__(self, binary, args=[], name=None, test_dir="/var/tmp",
socket_scm_helper=None):
if name is None:
name = "qemu-%d" % os.getpid()
super(QEMUQtestMachine, self).__init__(binary, args, name=name, test_dir=test_dir,
socket_scm_helper=socket_scm_helper)
self._qtest_path = os.path.join(test_dir, name + "-qtest.sock")
def _base_args(self):
args = super(self, QEMUQtestMachine)._base_args()
args.extend(['-qtest', 'unix:path=' + self._qtest_path])
args = super(QEMUQtestMachine, self)._base_args()
args.extend(['-qtest', 'unix:path=' + self._qtest_path,
'-machine', 'accel=qtest'])
return args
def _pre_launch(self):
super(self, QEMUQtestMachine)._pre_launch()
super(QEMUQtestMachine, self)._pre_launch()
self._qtest = QEMUQtestProtocol(self._qtest_path, server=True)
def _post_launch(self):
super(self, QEMUQtestMachine)._post_launch()
super(QEMUQtestMachine, self)._post_launch()
self._qtest.accept()
def _post_shutdown(self):
super(self, QEMUQtestMachine)._post_shutdown()
super(QEMUQtestMachine, self)._post_shutdown()
self._remove_if_exists(self._qtest_path)
def qtest(self, cmd):

24
tests/qemu-iotests/iotests.py
View File

@ -39,7 +39,7 @@
if os.environ.get('QEMU_IO_OPTIONS'):
qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ')
qemu_prog = [os.environ.get('QEMU_PROG', 'qemu')]
qemu_prog = os.environ.get('QEMU_PROG', 'qemu')
qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ')
imgfmt = os.environ.get('IMGFMT', 'raw')
@ -128,28 +128,12 @@ def log(msg, filters=[]):
msg = flt(msg)
print msg
# Test if 'match' is a recursive subset of 'event'
def event_match(event, match=None):
if match is None:
return True
for key in match:
if key in event:
if isinstance(event[key], dict):
if not event_match(event[key], match[key]):
return False
elif event[key] != match[key]:
return False
else:
return False
return True
class VM(qtest.QEMUMachine):
class VM(qtest.QEMUQtestMachine):
'''A QEMU VM'''
def __init__(self):
super(self, VM).__init__(qemu_prog, qemu_opts, test_dir)
super(VM, self).__init__(qemu_prog, qemu_opts, test_dir=test_dir,
socket_scm_helper=socket_scm_helper)
self._num_drives = 0
def add_drive_raw(self, opts):