def test_calculate_overprovision(self):
'''When calculated space is higher than available space, raise an exception.'''
vg_size = 20 * 10**6 # 20 mb drive
vg_available = 10 # 10 bytes available
size_str = '80%'
vg = VolumeGroup(None, size=vg_size, available_size=vg_available)
with pytest.raises(error.NotEnoughStorage):
ApplyNodeStorage.calculate_bytes(size_str=size_str, context=vg)
def test_calculate_G_label(self):
'''Convert gigabyte labels to x * 10^9 bytes.'''
size_str = '15G'
drive_size = 20 * 10**9
drive = BlockDevice(None, size=drive_size, available_size=drive_size)
calc_size = ApplyNodeStorage.calculate_bytes(
size_str=size_str, context=drive)
assert calc_size == 15 * 10**9
def test_calculate_TiB_label(self):
'''Convert tebibyte labels to x * 2^40 bytes.'''
size_str = '15TiB'
drive_size = 20 * 2**40
drive = BlockDevice(None, size=drive_size, available_size=drive_size)
calc_size = ApplyNodeStorage.calculate_bytes(
size_str=size_str, context=drive)
assert calc_size == 15 * 2**40
def test_calculate_TB_label(self):
'''Convert terabyte labels to x * 10^12 bytes.'''
size_str = '15TB'
drive_size = 20 * 1000 * 1000 * 1000 * 1000
drive = BlockDevice(None, size=drive_size, available_size=drive_size)
calc_size = ApplyNodeStorage.calculate_bytes(size_str=size_str,
context=drive)
assert calc_size == 15 * 1000 * 1000 * 1000 * 1000
def test_calculate_min_label(self):
'''Adding the min marker '>' should provision all available space.'''
vg_size = 20 * 10**6 # 20 mb drive
vg_available = 15 * 10**6
size_str = '>10%'
vg = VolumeGroup(None, size=vg_size, available_size=vg_available)
calc_size = ApplyNodeStorage.calculate_bytes(
size_str=size_str, context=vg)
assert calc_size == vg_available - ApplyNodeStorage.PART_TABLE_RESERVATION
def test_calculate_percent_vg(self):
'''Convert a percent of total blockdev space to explicit byte count.'''
vg_size = 20 * 10**6 # 20 mb drive
lv_size = math.floor(.2 * vg_size) # calculate 20% of drive size
size_str = '20%'
vg = VolumeGroup(None, size=vg_size, available_size=vg_size)
calc_size = ApplyNodeStorage.calculate_bytes(
size_str=size_str, context=vg)
assert calc_size == lv_size
def test_calculate_percent_blockdev(self):
'''Convert a percent of total blockdev space to explicit byte count.'''
drive_size = 20 * 10**6 # 20 mb drive
part_size = math.floor(.2 * drive_size) # calculate 20% of drive size
size_str = '20%'
drive = BlockDevice(None, size=drive_size, available_size=drive_size)
calc_size = ApplyNodeStorage.calculate_bytes(
size_str=size_str, context=drive)
assert calc_size == part_size
