def test_bit_size_correct(self):
numbers = [-12, 12, 1200, 120091, 123456789]
for num in numbers:
if num < 0:
size = len(bin(num, None)) - 1
else:
size = len(bin(num, None))
self.assertEqual(builtins.integer_bit_size(num), size)
self.assertEqual(builtins.integer_bit_size(1023), 10)
self.assertEqual(builtins.integer_bit_size(1024), 11)
self.assertEqual(builtins.integer_bit_size(1025), 11)
self.assertEqual(builtins.integer_bit_size(1 << 1024), 1025)
self.assertEqual(builtins.integer_bit_size((1 << 1024) + 1), 1025)
self.assertEqual(builtins.integer_bit_size((1 << 1024) - 1), 1024)
self.assertEqual(builtins.integer_bit_size((1 << 32) - 1), 32)
self.assertEqual(builtins.integer_bit_size((1 << 64) - 1), 64)
def test_bit_size_correct(self):
numbers = [
-12,
12,
1200,
120091,
123456789,
]
for num in numbers:
if num < 0:
size = len(bin(num, None)) - 1
else:
size = len(bin(num, None))
self.assertEqual(builtins.integer_bit_size(num), size)
self.assertEqual(builtins.integer_bit_size(1023), 10)
self.assertEqual(builtins.integer_bit_size(1024), 11)
self.assertEqual(builtins.integer_bit_size(1025), 11)
self.assertEqual(builtins.integer_bit_size(1 << 1024), 1025)
self.assertEqual(builtins.integer_bit_size((1 << 1024) + 1), 1025)
self.assertEqual(builtins.integer_bit_size((1 << 1024) - 1), 1024)
self.assertEqual(builtins.integer_bit_size((1 << 32) - 1), 32)
self.assertEqual(builtins.integer_bit_size((1 << 64) - 1), 64)
def generate_random_uint_between(low, high, rand_func=generate_random_bytes):
"""
Generates a random long integer between low and high, not including high.
:param low:
Low
:param high:
High
:param rand_func:
Random bytes generator function.
:returns:
Random unsigned long integer value.
"""
if not (builtins.is_integer(low) and builtins.is_integer(high)):
raise TypeError("unsupported argument types(s): %r and %r" %
(type(low).__name__, type(high).__name__))
if low >= high:
raise ValueError("high value must be greater than low value.")
substrate = high - low - 1
bits = builtins.integer_bit_size(substrate)
value = generate_random_uint_atmost(bits, rand_func=rand_func)
while value > substrate:
value = generate_random_uint_atmost(bits, rand_func=rand_func)
return low + value
def generate_random_uint_between(low, high, rand_func=generate_random_bytes):
"""
Generates a random long integer between low and high, not including high.
:param low:
Low
:param high:
High
:param rand_func:
Random bytes generator function.
:returns:
Random unsigned long integer value.
"""
if not (builtins.is_integer(low) and builtins.is_integer(high)):
raise TypeError("unsupported argument types(s): %r and %r" %
(type(low).__name__, type(high).__name__))
if low >= high:
raise ValueError("high value must be greater than low value.")
substrate = high - low - 1
bits = builtins.integer_bit_size(substrate)
value = generate_random_uint_atmost(bits, rand_func=rand_func)
while value > substrate:
value = generate_random_uint_atmost(bits, rand_func=rand_func)
return low + value
def test_bit_size_0_if_zero(self): self.assertEqual(builtins.integer_bit_size(0), 1)
def test_bit_size_0_if_zero(self): self.assertEqual(integer_bit_size(0), 1)