def test_exact_div(self):
"""Util.number.exact_div"""
# Positive numbers
self.assertEqual(1, number.exact_div(1, 1))
self.assertRaises(ValueError, number.exact_div, 1, 2)
self.assertEqual(1, number.exact_div(2, 2))
self.assertRaises(ValueError, number.exact_div, 3, 2)
self.assertEqual(2, number.exact_div(4, 2))
# Negative numbers
self.assertEqual(-1, number.exact_div(-1, 1))
self.assertEqual(-1, number.exact_div(1, -1))
self.assertRaises(ValueError, number.exact_div, -1, 2)
self.assertEqual(1, number.exact_div(-2, -2))
self.assertEqual(-2, number.exact_div(-4, 2))
# Zero dividend
self.assertEqual(0, number.exact_div(0, 1))
self.assertEqual(0, number.exact_div(0, 2))
# Zero divisor (allow_divzero == False)
self.assertRaises(ZeroDivisionError, number.exact_div, 0, 0)
self.assertRaises(ZeroDivisionError, number.exact_div, 1, 0)
# Zero divisor (allow_divzero == True)
self.assertEqual(0, number.exact_div(0, 0, allow_divzero=True))
self.assertRaises(ValueError,
number.exact_div,
1,
0,
allow_divzero=True)
def test_exact_div(self):
"""Util.number.exact_div"""
# Positive numbers
self.assertEqual(1, number.exact_div(1, 1))
self.assertRaises(ValueError, number.exact_div, 1, 2)
self.assertEqual(1, number.exact_div(2, 2))
self.assertRaises(ValueError, number.exact_div, 3, 2)
self.assertEqual(2, number.exact_div(4, 2))
# Negative numbers
self.assertEqual(-1, number.exact_div(-1, 1))
self.assertEqual(-1, number.exact_div(1, -1))
self.assertRaises(ValueError, number.exact_div, -1, 2)
self.assertEqual(1, number.exact_div(-2, -2))
self.assertEqual(-2, number.exact_div(-4, 2))
# Zero dividend
self.assertEqual(0, number.exact_div(0, 1))
self.assertEqual(0, number.exact_div(0, 2))
# Zero divisor (allow_divzero == False)
self.assertRaises(ZeroDivisionError, number.exact_div, 0, 0)
self.assertRaises(ZeroDivisionError, number.exact_div, 1, 0)
# Zero divisor (allow_divzero == True)
self.assertEqual(0, number.exact_div(0, 0, allow_divzero=True))
self.assertRaises(ValueError, number.exact_div, 1, 0, allow_divzero=True)
def __init__(self):
self.counter = Counter.new(nbits=self.block_size * 8, initial_value=0, little_endian=True)
self.key = None
self.block_size_shift = exact_log2(self.block_size)
assert 1 << self.block_size_shift == self.block_size
self.blocks_per_key = exact_div(self.key_size, self.block_size)
assert self.key_size == self.blocks_per_key * self.block_size
self.max_bytes_per_request = self.max_blocks_per_request * self.block_size
def __init__(self):
self.counter = Counter.new(nbits=self.block_size * 8,
initial_value=0,
little_endian=True)
self.key = None
self.block_size_shift = exact_log2(self.block_size)
self.blocks_per_key = exact_div(self.key_size, self.block_size)
self.max_bytes_per_request = self.max_blocks_per_request * self.block_size
return
def __init__(self):
self.counter = Counter.new(nbits=self.block_size*8, initial_value=0, little_endian=True)
self.key = None
# Set some helper constants
self.block_size_shift = exact_log2(self.block_size)
assert (1 << self.block_size_shift) == self.block_size
self.blocks_per_key = exact_div(self.key_size, self.block_size)
assert self.key_size == self.blocks_per_key * self.block_size
self.max_bytes_per_request = self.max_blocks_per_request * self.block_size
