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Old 02-28-2009, 08:26 PM
Martin Gracik
 
Default Added unittests for devicelibs lvm.py and swap.py; Corrected errors in lvm.py and swap.py

---
storage/devicelibs/lvm.py | 33 +++--
storage/devicelibs/swap.py | 4 +-
tests/storage/devicelibs/baseclass.py | 43 ++++++
tests/storage/devicelibs/lvm.py | 229 +++++++++++++++++++++++++++++++++
tests/storage/devicelibs/swap.py | 63 +++++++++
5 files changed, 357 insertions(+), 15 deletions(-)
create mode 100644 tests/storage/devicelibs/baseclass.py
create mode 100644 tests/storage/devicelibs/lvm.py
create mode 100644 tests/storage/devicelibs/swap.py

diff --git a/storage/devicelibs/lvm.py b/storage/devicelibs/lvm.py
index cd39707..bd39fc9 100644
--- a/storage/devicelibs/lvm.py
+++ b/storage/devicelibs/lvm.py
@@ -159,18 +159,25 @@ def pvinfo(device):
if not vals:
raise LVMError("pvinfo failed for %s" % device)

- info = {'pv_name': vals[0],
- 'vg_name': vals[2],
- 'vg_uuid': vals[3]}
+ # don't raise an exception if pv is not a part of any vg
+ pv_name = vals[0]
+ try:
+ vg_name, vg_uuid = vals[2], vals[3]
+ except IndexError:
+ vg_name, vg_uuid = "", ""
+
+ info = {'pv_name': pv_name,
+ 'vg_name': vg_name,
+ 'vg_uuid': vg_uuid}
+
return info

-def vgcreate(vg_name, pvs, pe_size):
+def vgcreate(vg_name, pv_list, pe_size):
argv = ["vgcreate"]
if pe_size:
argv.extend(["-s", "%dM" % pe_size])
- pv_list = " ".join(pvs)
argv.append(vg_name)
- argv.append(pv_list)
+ argv.extend(pv_list)
rc = iutil.execWithRedirect("lvm",
argv,
stdout = "/dev/tty5",
@@ -190,7 +197,7 @@ def vgremove(vg_name):
raise LVMError("vgremove failed for %s" % vg_name)

def vgactivate(vg_name):
- rc = iutil.execWithRedirect("lvm", ["vgchange" "-a", "y", vg_name],
+ rc = iutil.execWithRedirect("lvm", ["vgchange", "-a", "y", vg_name],
stdout = "/dev/tty5",
stderr = "/dev/tty5",
searchPath=1)
@@ -207,8 +214,7 @@ def vgdeactivate(vg_name):
raise LVMError("vgdeactivate failed for %s" % vg_name)

def vgreduce(vg_name, pv_list):
- pvs = " ".join(pv_list)
- rc = iutil.execWithRedirect("lvm", ["vgreduce", vg_name, pvs],
+ rc = iutil.execWithRedirect("lvm", ["vgreduce", vg_name] + pv_list,
stdout = "/dev/tty5",
stderr = "/dev/tty5",
searchPath=1)
@@ -235,10 +241,9 @@ def lvs(vg_name):
buf = iutil.execWithCapture("lvm",
["lvs", "--noheadings", "--nosuffix",
"--units", "m", "-o",
- "lv_name,lv_uuid,lv_size"],
+ "lv_name,lv_uuid,lv_size", vg_name],
stderr="/dev/tty5")

-
lvs = {}
for line in buf.splitlines():
line = line.strip()
@@ -247,6 +252,10 @@ def lvs(vg_name):
(name, uuid, size) = line.split()
lvs[name] = {"size": size,
"uuid": uuid}
+
+ if not lvs:
+ raise LVMError(_("lvs failed for %s" % vg_name))
+
return lvs

def lvcreate(vg_name, lv_name, size):
@@ -307,5 +316,3 @@ def lvdeactivate(vg_name, lv_name):
if rc:
raise LVMError("lvdeactivate failed for %s" % lv_path)

-
-
diff --git a/storage/devicelibs/swap.py b/storage/devicelibs/swap.py
index 8ee5b5b..38000eb 100644
--- a/storage/devicelibs/swap.py
+++ b/storage/devicelibs/swap.py
@@ -23,6 +23,7 @@
import resource

import iutil
+import resource

from ..errors import *

@@ -71,7 +72,7 @@ def swapon(device, priority=None):

argv = []
if isinstance(priority, int) and 0 <= priority <= 32767:
- argv.extend(["-p", priority])
+ argv.extend(["-p", "%d" % priority])
argv.append(device)

rc = iutil.execWithRedirect("swapon",
@@ -105,4 +106,3 @@ def swapstatus(device):

return status

-
diff --git a/tests/storage/devicelibs/baseclass.py b/tests/storage/devicelibs/baseclass.py
new file mode 100644
index 0000000..d1264f5
--- /dev/null
+++ b/tests/storage/devicelibs/baseclass.py
@@ -0,0 +1,43 @@
+import unittest
+import os
+import subprocess
+
+class TestDevicelibs(unittest.TestCase):
+
+ _LOOP_DEVICES = (("/dev/loop0", "/tmp/test-virtdev0"),
+ ("/dev/loop1", "/tmp/test-virtdev1"))
+
+ ((_LOOP_DEV0, _LOOP_FILE0), (_LOOP_DEV1, _LOOP_FILE1)) = _LOOP_DEVICES
+
+ def setUp(self):
+ for dev, file in self._LOOP_DEVICES:
+ proc = subprocess.Popen(["dd", "if=/dev/zero", "of=%s" % file, "bs=1024", "count=102400"])
+ while True:
+ proc.communicate()
+ if proc.returncode is not None:
+ rc = proc.returncode
+ break
+ if rc:
+ raise OSError, "dd failed creating the file %s" % file
+
+ proc = subprocess.Popen(["losetup", dev, file])
+ while True:
+ proc.communicate()
+ if proc.returncode is not None:
+ rc = proc.returncode
+ break
+ if rc:
+ raise OSError, "losetup failed setting up the loop device %s" % dev
+
+ def tearDown(self):
+ for dev, file in self._LOOP_DEVICES:
+ proc = subprocess.Popen(["losetup", "-d", dev])
+ while True:
+ proc.communicate()
+ if proc.returncode is not None:
+ rc = proc.returncode
+ break
+ if rc:
+ raise OSError, "losetup failed removing the loop device %s" % dev
+
+ os.remove(file)
diff --git a/tests/storage/devicelibs/lvm.py b/tests/storage/devicelibs/lvm.py
new file mode 100644
index 0000000..210ad9d
--- /dev/null
+++ b/tests/storage/devicelibs/lvm.py
@@ -0,0 +1,229 @@
+import baseclass
+import unittest
+import storage.devicelibs.lvm as lvm
+
+class TestLVM(baseclass.TestDevicelibs):
+
+ def testLVMStuff(self):
+ ##
+ ## pvcreate
+ ##
+ # pass
+ for dev, file in self._LOOP_DEVICES:
+ self.assertEqual(lvm.pvcreate(dev), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.pvcreate, "/not/existing/device")
+
+ ##
+ ## pvresize
+ ##
+ # pass
+ for dev, file in self._LOOP_DEVICES:
+ self.assertEqual(lvm.pvresize(dev, 50), None)
+ self.assertEqual(lvm.pvresize(dev, 100), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.pvresize, "/not/existing/device", 50)
+
+ ##
+ ## vgcreate
+ ##
+ # pass
+ self.assertEqual(lvm.vgcreate("test-vg", [self._LOOP_DEV0, self._LOOP_DEV1], 4), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.vgcreate, "another-vg", ["/not/existing/device"], 4)
+ # vg already exists
+ self.assertRaises(lvm.LVMError, lvm.vgcreate, "test-vg", [self._LOOP_DEV0], 4)
+ # pe size must be power of 2
+ self.assertRaises(lvm.LVMError, lvm.vgcreate, "another-vg", [self._LOOP_DEV0], 5)
+
+ ##
+ ## pvremove
+ ##
+ # fail
+ # cannot remove pv now with vg created
+ self.assertRaises(lvm.LVMError, lvm.pvremove, self._LOOP_DEV0)
+
+ ##
+ ## vgdeactivate
+ ##
+ # pass
+ self.assertEqual(lvm.vgdeactivate("test-vg"), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.vgdeactivate, "wrong-vg-name")
+
+ ##
+ ## vgreduce
+ ##
+ # pass
+ self.assertEqual(lvm.vgreduce("test-vg", [self._LOOP_DEV1]), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.vgreduce, "wrong-vg-name", [self._LOOP_DEV1])
+ self.assertRaises(lvm.LVMError, lvm.vgreduce, "test-vg", ["/not/existing/device"])
+
+ ##
+ ## vgactivate
+ ##
+ # pass
+ self.assertEqual(lvm.vgactivate("test-vg"), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.vgactivate, "wrong-vg-name")
+
+ ##
+ ## pvinfo
+ ##
+ # pass
+ self.assertEqual(lvm.pvinfo(self._LOOP_DEV0)["pv_name"], self._LOOP_DEV0)
+ # no vg
+ self.assertEqual(lvm.pvinfo(self._LOOP_DEV1)["pv_name"], self._LOOP_DEV1)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.pvinfo, "/not/existing/device")
+
+ ##
+ ## vginfo
+ ##
+ # pass
+ self.assertEqual(lvm.vginfo("test-vg")["pe_size"], "4.00")
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.vginfo, "wrong-vg-name")
+
+ ##
+ ## lvcreate
+ ##
+ # pass
+ self.assertEqual(lvm.lvcreate("test-vg", "test-lv", 10), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.lvcreate, "wrong-vg-name", "another-lv", 10)
+
+ ##
+ ## lvdeactivate
+ ##
+ # pass
+ self.assertEqual(lvm.lvdeactivate("test-vg", "test-lv"), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.lvdeactivate, "test-vg", "wrong-lv-name")
+ self.assertRaises(lvm.LVMError, lvm.lvdeactivate, "wrong-vg-name", "test-lv")
+ self.assertRaises(lvm.LVMError, lvm.lvdeactivate, "wrong-vg-name", "wrong-lv-name")
+
+ ##
+ ## lvresize
+ ##
+ # pass
+ self.assertEqual(lvm.lvresize("test-vg", "test-lv", 60), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.lvresize, "test-vg", "wrong-lv-name", 80)
+ self.assertRaises(lvm.LVMError, lvm.lvresize, "wrong-vg-name", "test-lv", 80)
+ self.assertRaises(lvm.LVMError, lvm.lvresize, "wrong-vg-name", "wrong-lv-name", 80)
+ # changing to same size
+ self.assertRaises(lvm.LVMError, lvm.lvresize, "test-vg", "test-lv", 60)
+
+ ##
+ ## lvactivate
+ ##
+ # pass
+ self.assertEqual(lvm.lvactivate("test-vg", "test-lv"), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.lvactivate, "test-vg", "wrong-lv-name")
+ self.assertRaises(lvm.LVMError, lvm.lvactivate, "wrong-vg-name", "test-lv")
+ self.assertRaises(lvm.LVMError, lvm.lvactivate, "wrong-vg-name", "wrong-lv-name")
+
+ ##
+ ## lvs
+ ##
+ # pass
+ self.assertEqual(lvm.lvs("test-vg")["test-lv"]["size"], "60.00")
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.lvs, "wrong-vg-name")
+
+ ##
+ ## has_lvm
+ ##
+ # pass
+ self.assertEqual(lvm.has_lvm(), True)
+
+ # fail
+ #TODO
+
+ ##
+ ## lvremove
+ ##
+ # pass
+ self.assertEqual(lvm.lvdeactivate("test-vg", "test-lv"), None) # is deactivation needed?
+ self.assertEqual(lvm.lvremove("test-vg", "test-lv"), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.lvremove, "test-vg", "wrong-lv-name")
+ self.assertRaises(lvm.LVMError, lvm.lvremove, "wrong-vg-name", "test-lv")
+ self.assertRaises(lvm.LVMError, lvm.lvremove, "wrong-vg-name", "wrong-lv-name")
+ # lv already removed
+ self.assertRaises(lvm.LVMError, lvm.lvremove, "test-vg", "test-lv")
+
+ ##
+ ## vgremove
+ ##
+ # pass
+ self.assertEqual(lvm.vgremove("test-vg"), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.vgremove, "wrong-vg-name")
+ # vg already removed
+ self.assertRaises(lvm.LVMError, lvm.vgremove, "test-vg")
+
+ ##
+ ## pvremove
+ ##
+ # pass
+ for dev, file in self._LOOP_DEVICES:
+ self.assertEqual(lvm.pvremove(dev), None)
+
+ # fail
+ self.assertRaises(lvm.LVMError, lvm.pvremove, "/not/existing/device")
+ # pv already removed
+ self.assertRaises(lvm.LVMError, lvm.pvremove, self._LOOP_DEV0)
+
+ #def testGetPossiblePhysicalExtents(self):
+ # pass
+ self.assertEqual(lvm.getPossiblePhysicalExtents(4) ,
+ filter(lambda pe: pe > 4, map(lambda power: 2**power, xrange(3, 25))))
+ self.assertEqual(lvm.getPossiblePhysicalExtents(10 0000),
+ filter(lambda pe: pe > 100000, map(lambda power: 2**power, xrange(3, 25))))
+
+ #def testGetMaxLVSize(self):
+ # pass
+ # why do we specify the PE ? not needed...
+ self.assertEqual(lvm.getMaxLVSize(4), 16*1024**2)
+
+ #def testSafeLVMName(self):
+ # pass
+ self.assertEqual(lvm.safeLvmName("/strange/lv*name5"), "strange_lvname5")
+
+ #def testClampSize(self):
+ # pass
+ self.assertEqual(lvm.clampSize(10, 4), 8L)
+ self.assertEqual(lvm.clampSize(10, 4, True), 12L)
+
+ #def testVGUsedSpace(self):
+ #TODO
+ pass
+
+ #def testVGFreeSpace(self):
+ #TODO
+ pass
+
+
+if __name__ == "__main__":
+ suite = unittest.TestLoader().loadTestsFromTestCase(TestLV M)
+ unittest.TextTestRunner(verbosity=2).run(suite)
+
diff --git a/tests/storage/devicelibs/swap.py b/tests/storage/devicelibs/swap.py
new file mode 100644
index 0000000..b1e9bd3
--- /dev/null
+++ b/tests/storage/devicelibs/swap.py
@@ -0,0 +1,63 @@
+import baseclass
+import unittest
+import storage.devicelibs.swap as swap
+
+class TestSwap(baseclass.TestDevicelibs):
+
+ def runTest(self):
+ ##
+ ## mkswap
+ ##
+ # pass
+ self.assertEqual(swap.mkswap(self._LOOP_DEV0, "swap"), None)
+
+ # fail
+ self.assertRaises(swap.SwapError, swap.mkswap, "/not/existing/device")
+
+ ##
+ ## swapon
+ ##
+ # pass
+ self.assertEqual(swap.swapon(self._LOOP_DEV0, 1), None)
+
+ # fail
+ self.assertRaises(swap.SwapError, swap.swapon, "/not/existing/device")
+ # not a swap partition
+ self.assertRaises(swap.SwapError, swap.swapon, self._LOOP_DEV1)
+
+ # pass
+ # make another swap
+ self.assertEqual(swap.mkswap(self._LOOP_DEV1, "another-swap"), None)
+ self.assertEqual(swap.swapon(self._LOOP_DEV1), None)
+
+ ##
+ ## swapstatus
+ ##
+ # pass
+ self.assertEqual(swap.swapstatus(self._LOOP_DEV0), True)
+ self.assertEqual(swap.swapstatus(self._LOOP_DEV1), True)
+
+ # does not fail
+ self.assertEqual(swap.swapstatus("/not/existing/device"), False)
+
+ ##
+ ## swapoff
+ ##
+ # pass
+ self.assertEqual(swap.swapoff(self._LOOP_DEV1), None)
+
+ # check status
+ self.assertEqual(swap.swapstatus(self._LOOP_DEV0), True)
+ self.assertEqual(swap.swapstatus(self._LOOP_DEV1), False)
+
+ self.assertEqual(swap.swapoff(self._LOOP_DEV0), None)
+
+ # fail
+ self.assertRaises(swap.SwapError, swap.swapoff, "/not/existing/device")
+ # already off
+ self.assertRaises(swap.SwapError, swap.swapoff, self._LOOP_DEV0)
+
+
+if __name__ == "__main__":
+ suite = unittest.TestLoader().loadTestsFromTestCase(TestSw ap)
+ unittest.TextTestRunner(verbosity=2).run(suite)
--
1.6.0.6

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