def testSmallWrites(self):
        data = """
        Aliquet habitasse tellus. Fringilla faucibus tortor parturient
        consectetuer sodales, venenatis platea habitant. Hendrerit nostra nunc
        odio. Primis porttitor consequat enim ridiculus. Taciti nascetur,
        nibh, convallis sit, cum dis mi. Nonummy justo odio cursus, ac hac
        curabitur nibh. Tellus. Montes, ut taciti orci ridiculus facilisis
        nunc. Donec. Risus adipiscing habitant donec vehicula non vitae class,
        porta vitae senectus. Nascetur felis laoreet integer, tortor ligula.
        Pellentesque vestibulum cras nostra. Ut sollicitudin posuere, per
        accumsan curabitur id, nisi fermentum vel, eget netus tristique per,
        donec, curabitur senectus ut fusce. A. Mauris fringilla senectus et
        eni facilisis magna inceptos eu, cursus habitant fringilla neque.
        Nibh. Elit facilisis sed, elit, nostra ve torquent dictumst, aenean
        sapien quam, habitasse in. Eu tempus aptent, diam, nisi risus
        pharetra, ac, condimentum orci, consequat mollis. Cras lacus augue
        ultrices proin fermentum nibh sed urna. Ve ipsum ultrices curae,
        feugiat faucibus proin et elementum vivamus, lectus. Torquent. Tempus
        facilisi. Cras suspendisse euismod consectetuer ornare nostra. Fusce
        amet cum amet diam.
        """
        self.assertTrue(len(data) > 512)

        with temporaryPath() as srcPath:
            with fileUtils.open_ex(srcPath, "dw") as f:
                f.write(data[:512])
                f.write(data[512:])

            with fileUtils.open_ex(srcPath, "r") as f:
                self.assertEquals(f.read(len(data)), data)

 def testCopyUserModeToGroup(self):
     with temporaryPath() as path:
         for initialMode, expectedMode in self.modesList:
             os.chmod(path, initialMode)
             fileUtils.copyUserModeToGroup(path)
             self.assertEquals(os.stat(path).st_mode & self.MODE_MASK,
                               expectedMode)

    def testUpdateRead(self):
        data = """
        Aliquet. Aliquam eni ac nullam iaculis cras ante, adipiscing. Enim
        eget egestas pretium. Ultricies. Urna cubilia in, hac. Curabitur.
        Nibh. Purus ridiculus natoque sed id. Feugiat lacus quam, arcu
        maecenas nec egestas. Hendrerit duis nunc eget dis lacus porttitor per
        sodales class diam condimentum quisque condimentum nisi ligula.
        Dapibus blandit arcu nam non ac feugiat diam, dictumst. Ante eget
        fames eu penatibus in, porta semper accumsan adipiscing tellus in
        sagittis. Est parturient parturient mi fermentum commodo, per
        fermentum. Quis duis velit at quam risus mi. Facilisi id fames.
        Turpis, conubia rhoncus. Id. Elit eni tellus gravida, ut, erat morbi.
        Euismod, enim a ante vestibulum nibh. Curae curae primis vulputate
        adipiscing arcu ipsum suspendisse quam hymenaeos primis accumsan
        vestibulum.
        """
        self.assertTrue(len(data) > 512)

        with temporaryPath() as srcPath:
            with fileUtils.open_ex(srcPath, "wd") as f:
                f.write(data[:512])

            with fileUtils.open_ex(srcPath, "r+d") as f:
                f.seek(512)
                f.write(data[512:])

            with fileUtils.open_ex(srcPath, "r") as f:
                self.assertEquals(f.read(len(data)), data)

    def test_small_writes(self):
        with temporaryPath() as srcPath, directio.DirectFile(srcPath, "w") as f:
            f.write(self.DATA[:BLOCK_SIZE])
            f.write(self.DATA[BLOCK_SIZE:])

            with io.open(srcPath, "rb") as f:
                self.assertEquals(f.read(), self.DATA)

def fake_dd(delay):
    script = "#!/bin/sh\nsleep %.1f\n" % delay
    script = script.encode('ascii')
    with temporaryPath(data=script) as fake_dd:
        os.chmod(fake_dd, 0o700)
        with MonkeyPatchScope([(constants, "EXT_DD", fake_dd)]):
            yield

 def testRead(self):
     data = """Vestibulum. Libero leo nostra, pede nunc eu. Pellentesque
     platea lacus morbi nisl montes ve. Ac. A, consectetuer erat, justo eu.
     Elementum et, phasellus fames et rutrum donec magnis eu bibendum. Arcu,
     ante aliquam ipsum ut facilisis ad."""
     with temporaryPath(data=data) as srcPath, \
             fileUtils.open_ex(srcPath, "dr") as f:
         self.assertEquals(f.read(), data)

    def test_write_domxml(self, monkeypatch):
        with temporaryPath() as path:
            monkeypatch.setenv('_hook_domxml', path)
            hooking.write_domxml(minidom.parseString(self._EXPECTED_XML))

            with io.open(path, 'r') as src:
                found_xml = src.read()
        assert xml_equal(found_xml, self._EXPECTED_XML)

 def test_taskset_missing(self):
     self.checks = 1
     with temporaryPath(data=b"blah") as path:
         checker = check.DirectioChecker(self.loop, path, self.complete)
         checker.start()
         self.loop.run_forever()
         pprint.pprint(self.results)
         result = self.results[0]
         self.assertRaises(exception.MiscFileReadException, result.delay)

    def test_roundtrip_domxml(self, monkeypatch):
        with temporaryPath() as path:
            os.environ['_hook_domxml'] = path
            monkeypatch.setenv('_hook_domxml', path)

            hooking.write_domxml(minidom.parseString(self._EXPECTED_XML))
            domxml = hooking.read_domxml()

        assert xml_equal(domxml.toprettyxml(), self._EXPECTED_XML)

 def testWrite(self):
     data = """In ut non platea egestas, quisque magnis nunc nostra ac etiam
     suscipit nec integer sociosqu. Fermentum. Ante orci luctus, ipsum
     ullamcorper enim arcu class neque inceptos class. Ut, sagittis
     torquent, commodo facilisi."""
     with temporaryPath() as srcPath, fileUtils.open_ex(srcPath, "dw") as f:
         f.write(data)
         with fileUtils.open_ex(srcPath, "r") as f:
             self.assertEquals(f.read(len(data)), data)

 def test_allocate(self, image_format, allocation_mode, allocated_bytes):
     size = 16 * 1024 * 1024
     with temporaryPath() as image:
         op = qemuimg.create(image,
                             size=size,
                             format=image_format,
                             preallocation=allocation_mode)
         op.run()
         allocated = os.stat(image).st_blocks * 512
         assert allocated == allocated_bytes

    def test_update_and_read(self):
        with temporaryPath() as srcPath, directio.DirectFile(srcPath, "w") as f:
            f.write(self.DATA[:BLOCK_SIZE])

            with directio.DirectFile(srcPath, "r+") as f:
                f.seek(BLOCK_SIZE)
                f.write(self.DATA[BLOCK_SIZE:])

            with io.open(srcPath, "rb") as f:
                self.assertEquals(f.read(), self.DATA)

def env(enable='true', format='pstat', clock='cpu', builtins='false'):
    with temporaryPath() as filename:
        config = make_config([
            ('devel', 'cpu_profile_enable', enable),
            ('devel', 'cpu_profile_filename', filename),
            ('devel', 'cpu_profile_format', format),
            ('devel', 'cpu_profile_clock', clock),
            ('devel', 'cpu_profile_builtins', builtins),
        ])
        with MonkeyPatchScope([(cpu, 'config', config)]):
            yield filename

 def test_path_ok(self):
     self.checks = 1
     with temporaryPath(data=b"blah") as path:
         checker = check.DirectioChecker(self.loop, path, self.complete)
         checker.start()
         self.loop.run_forever()
         pprint.pprint(self.results)
         result = self.results[0]
         delay = result.delay()
         print("delay:", delay)
         self.assertEqual(type(delay), float)

    def testNames(self):
        # I convert to some id because I have no
        # idea what users are defined and what
        # there IDs are apart from root
        tmpId = 666
        with temporaryPath() as srcPath:
            fileUtils.chown(srcPath, tmpId, tmpId)
            stat = os.stat(srcPath)
            self.assertTrue(stat.st_uid == stat.st_gid == tmpId)

            fileUtils.chown(srcPath, "root", "root")
            stat = os.stat(srcPath)
            self.assertTrue(stat.st_uid == stat.st_gid == 0)

    def test_hibernation_params(self):
        vmParams = {}
        vmParams.update(self.vmParams)
        extraParams = {
            'a': 42,
            'foo': ['bar'],
        }
        with temporaryPath(data=pickle.dumps(extraParams)) as path:
            vmParams['hiberVolHandle'] = path
            res = self.vm.create(vmParams)

        self.assertFalse(response.is_error(res))
        for param in extraParams:
            self.assertEqual(extraParams[param], vmParams[param])

    def test_hibernation_params_wrong_format(self):
        vmParams = {}
        vmParams.update(self.vmParams)

        refParams = copy.deepcopy(vmParams)
        refParams['restoreState'] = True  # to be added BY TESTS

        extraParams = ['a', 42]
        with temporaryPath(data=pickle.dumps(extraParams)) as path:
            vmParams['hiberVolHandle'] = path
            res = self.vm.create(vmParams)

        res = self.vm.create(vmParams)
        self.assertFalse(response.is_error(res))
        self.assertEqual(refParams, vmParams)

    def test_resize(self):
        # Test that resize call actually works
        size = 4096
        with temporaryPath(data=b'x' * size) as image:
            fallocate.allocate(image, size, offset=size).run()

            with io.open(image, 'rb') as f:
                actual = f.read()

            expected = b'x' * size + b'\0' * size

            self.assertEqual(expected, actual)

            allocated = os.stat(image).st_blocks * 512
            self.assertEqual(allocated, size * 2)

def fake_dd(delay):
    """
    Simulate slow dd read
    """
    rate = int(100 / delay) if delay else "Infinity"
    script = """#!/bin/sh
sleep {delay}
echo 0+1 records in >&2
echo 0+1 records out >&2
echo 100 bytes copied, {delay} s, {rate} B/s >&2
""".format(delay=delay, rate=rate)
    script = script.encode('ascii')
    with temporaryPath(data=script) as fake_dd:
        os.chmod(fake_dd, 0o700)
        with MonkeyPatchScope([(constants, "EXT_DD", fake_dd)]):
            yield

    def testVmWithCdrom(self, pathLocation):
        customization = {
            "vmId": "77777777-ffff-3333-bbbb-222222222222",
            "devices": [],
            "vmName": "testVmWithCdrom_%s" % pathLocation,
            "display": _GRAPHICS_FOR_ARCH[platform.machine()],
        }

        # echo -n testPayload | md5sum
        # d37e46c24c78b1aed33496107afdb44b
        vmPayloadName = "/var/run/vdsm/payload/%s." "d37e46c24c78b1aed33496107afdb44b" ".img" % customization["vmId"]

        cdrom = {
            "index": "2",
            "iface": "ide",
            "specParams": {},
            "readonly": "true",
            "path": "",
            "device": "cdrom",
            "shared": "false",
            "type": "disk",
        }

        with temporaryPath(0o666) as path:
            cdromPaths = {
                "self": {"path": path, "specParams": {"path": "/dev/null"}},
                "specParams": {"path": "", "specParams": {"path": path}},
                "vmPayload": {
                    "path": "",
                    "specParams": {"path": "", "vmPayload": {"volId": "testConfig", "file": {"testPayload": ""}}},
                },
            }
            cdrom.update(cdromPaths[pathLocation])
            customization["devices"].append(cdrom)

            with RunningVm(self.vdsm, customization) as vm:
                self._waitForStartup(vm, 10)
                self._verifyDevices(vm)

                status, msg, stats = self.vdsm.getVmList(vm)
                self.assertEqual(status, SUCCESS, msg)
                for device in stats["devices"]:
                    if device["device"] == "cdrom":
                        if "vmPayload" in cdrom["specParams"]:
                            cdrom["path"] = vmPayloadName
                        self.assertEqual(device["path"], cdrom["path"])
                        self.assertEqual(device["specParams"]["path"], cdrom["specParams"]["path"])