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import unittest
from unittest import mock
from mozharness.base.diskutils import DiskInfo, DiskSize, DiskutilsError, convert_to
class TestDiskutils(unittest.TestCase):
def test_convert_to(self):
# 0 is 0 regardless from_unit/to_unit
self.assertTrue(convert_to(size=0, from_unit="GB", to_unit="MB") == 0)
size = 524288 # 512 * 1024
# converting from/to same unit
self.assertTrue(convert_to(size=size, from_unit="MB", to_unit="MB") == size)
self.assertTrue(convert_to(size=size, from_unit="MB", to_unit="GB") == 512)
self.assertRaises(
DiskutilsError,
lambda: convert_to(size="a string", from_unit="MB", to_unit="MB"),
)
self.assertRaises(
DiskutilsError, lambda: convert_to(size=0, from_unit="foo", to_unit="MB")
)
self.assertRaises(
DiskutilsError, lambda: convert_to(size=0, from_unit="MB", to_unit="foo")
)
class TestDiskInfo(unittest.TestCase):
def testDiskinfo_to(self):
di = DiskInfo()
self.assertTrue(di.unit == "bytes")
self.assertTrue(di.free == 0)
self.assertTrue(di.used == 0)
self.assertTrue(di.total == 0)
# convert to GB
di._to("GB")
self.assertTrue(di.unit == "GB")
self.assertTrue(di.free == 0)
self.assertTrue(di.used == 0)
self.assertTrue(di.total == 0)
class MockStatvfs(object):
def __init__(self):
self.f_bsize = 0
self.f_frsize = 0
self.f_blocks = 0
self.f_bfree = 0
self.f_bavail = 0
self.f_files = 0
self.f_ffree = 0
self.f_favail = 0
self.f_flag = 0
self.f_namemax = 0
class TestDiskSpace(unittest.TestCase):
@mock.patch("mozharness.base.diskutils.os")
def testDiskSpacePosix(self, mock_os):
ds = MockStatvfs()
mock_os.statvfs.return_value = ds
di = DiskSize()._posix_size("/")
self.assertTrue(di.unit == "bytes")
self.assertTrue(di.free == 0)
self.assertTrue(di.used == 0)
self.assertTrue(di.total == 0)
@mock.patch("mozharness.base.diskutils.ctypes")
def testDiskSpaceWindows(self, mock_ctypes):
mock_ctypes.windll.kernel32.GetDiskFreeSpaceExA.return_value = 0
mock_ctypes.windll.kernel32.GetDiskFreeSpaceExW.return_value = 0
di = DiskSize()._windows_size("/c/")
self.assertTrue(di.unit == "bytes")
self.assertTrue(di.free == 0)
self.assertTrue(di.used == 0)
self.assertTrue(di.total == 0)
@mock.patch("mozharness.base.diskutils.os")
@mock.patch("mozharness.base.diskutils.ctypes")
def testUnspportedPlafrom(self, mock_ctypes, mock_os):
mock_os.statvfs.side_effect = AttributeError("")
self.assertRaises(AttributeError, lambda: DiskSize()._posix_size("/"))
mock_ctypes.windll.kernel32.GetDiskFreeSpaceExW.side_effect = AttributeError("")
mock_ctypes.windll.kernel32.GetDiskFreeSpaceExA.side_effect = AttributeError("")
self.assertRaises(AttributeError, lambda: DiskSize()._windows_size("/"))
self.assertRaises(
DiskutilsError, lambda: DiskSize().get_size(path="/", unit="GB")
)
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