1 # Common utilities and Python wrappers for qemu-iotests
3 # Copyright (C) 2012 IBM Corp.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
24 import sys; sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'QMP'))
27 __all__ = ['imgfmt', 'imgproto', 'test_dir' 'qemu_img', 'qemu_io',
28 'VM', 'QMPTestCase', 'notrun', 'main']
30 # This will not work if arguments or path contain spaces but is necessary if we
31 # want to support the override options that ./check supports.
32 qemu_img_args = os.environ.get('QEMU_IMG', 'qemu-img').strip().split(' ')
33 qemu_io_args = os.environ.get('QEMU_IO', 'qemu-io').strip().split(' ')
34 qemu_args = os.environ.get('QEMU', 'qemu').strip().split(' ')
36 imgfmt = os.environ.get('IMGFMT', 'raw')
37 imgproto = os.environ.get('IMGPROTO', 'file')
38 test_dir = os.environ.get('TEST_DIR', '/var/tmp')
41 '''Run qemu-img and return the exit code'''
42 devnull = open('/dev/null', 'r+')
43 return subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
46 '''Run qemu-io and return the stdout data'''
47 args = qemu_io_args + list(args)
48 return subprocess.Popen(args, stdout=subprocess.PIPE).communicate()[0]
54 self._monitor_path = os.path.join(test_dir, 'qemu-mon.%d' % os.getpid())
55 self._qemu_log_path = os.path.join(test_dir, 'qemu-log.%d' % os.getpid())
56 self._args = qemu_args + ['-chardev',
57 'socket,id=mon,path=' + self._monitor_path,
58 '-mon', 'chardev=mon,mode=control',
59 '-qtest', 'stdio', '-machine', 'accel=qtest',
60 '-display', 'none', '-vga', 'none']
63 def add_drive(self, path, opts=''):
64 '''Add a virtio-blk drive to the VM'''
65 options = ['if=virtio',
69 'id=drive%d' % self._num_drives]
73 self._args.append('-drive')
74 self._args.append(','.join(options))
79 '''Launch the VM and establish a QMP connection'''
80 devnull = open('/dev/null', 'rb')
81 qemulog = open(self._qemu_log_path, 'wb')
83 self._qmp = qmp.QEMUMonitorProtocol(self._monitor_path, server=True)
84 self._popen = subprocess.Popen(self._args, stdin=devnull, stdout=qemulog,
85 stderr=subprocess.STDOUT)
88 os.remove(self._monitor_path)
92 '''Terminate the VM and clean up'''
93 if not self._popen is None:
96 os.remove(self._monitor_path)
97 os.remove(self._qemu_log_path)
100 underscore_to_dash = string.maketrans('_', '-')
101 def qmp(self, cmd, **args):
102 '''Invoke a QMP command and return the result dict'''
104 for k in args.keys():
105 qmp_args[k.translate(self.underscore_to_dash)] = args[k]
107 return self._qmp.cmd(cmd, args=qmp_args)
109 def get_qmp_event(self, wait=False):
110 '''Poll for one queued QMP events and return it'''
111 return self._qmp.pull_event(wait=wait)
113 def get_qmp_events(self, wait=False):
114 '''Poll for queued QMP events and return a list of dicts'''
115 events = self._qmp.get_events(wait=wait)
116 self._qmp.clear_events()
119 index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
121 class QMPTestCase(unittest.TestCase):
122 '''Abstract base class for QMP test cases'''
124 def dictpath(self, d, path):
125 '''Traverse a path in a nested dict'''
126 for component in path.split('/'):
127 m = index_re.match(component)
129 component, idx = m.groups()
132 if not isinstance(d, dict) or component not in d:
133 self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
137 if not isinstance(d, list):
138 self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
142 self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
145 def assert_qmp_absent(self, d, path):
147 result = self.dictpath(d, path)
148 except AssertionError:
150 self.fail('path "%s" has value "%s"' % (path, str(result)))
152 def assert_qmp(self, d, path, value):
153 '''Assert that the value for a specific path in a QMP dict matches'''
154 result = self.dictpath(d, path)
155 self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value)))
158 '''Skip this test suite'''
159 # Each test in qemu-iotests has a number ("seq")
160 seq = os.path.basename(sys.argv[0])
162 open('%s.notrun' % seq, 'wb').write(reason + '\n')
163 print '%s not run: %s' % (seq, reason)
166 def main(supported_fmts=[]):
169 if supported_fmts and (imgfmt not in supported_fmts):
170 notrun('not suitable for this image format: %s' % imgfmt)
172 # We need to filter out the time taken from the output so that qemu-iotest
173 # can reliably diff the results against master output.
175 output = StringIO.StringIO()
177 class MyTestRunner(unittest.TextTestRunner):
178 def __init__(self, stream=output, descriptions=True, verbosity=1):
179 unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity)
181 # unittest.main() will use sys.exit() so expect a SystemExit exception
183 unittest.main(testRunner=MyTestRunner)
185 sys.stderr.write(re.sub(r'Ran (\d+) test[s] in [\d.]+s', r'Ran \1 tests', output.getvalue()))