def test_maximum():
"""Test maximum valid integer value."""
assert 127 == c_byte.from_buffer(bytearray(c_byte(127))).value
assert 2147483647 == c_int.from_buffer(bytearray(c_int(2147483647))).value
assert 127 == c_int8.from_buffer(bytearray(c_int8(127))).value
if sys.maxsize > 2**32: # 64-bit.
assert 9223372036854775807 == c_long.from_buffer(
bytearray(c_long(9223372036854775807))).value
else:
assert 2147483647 == c_long.from_buffer(bytearray(
c_long(2147483647))).value
assert 9223372036854775807 == c_longlong.from_buffer(
bytearray(c_longlong(9223372036854775807))).value
assert 65535 == c_uint16.from_buffer(bytearray(c_uint16(65535))).value
assert 4294967295 == c_uint32.from_buffer(bytearray(
c_uint32(4294967295))).value
assert 18446744073709551615 == c_uint64.from_buffer(
bytearray(c_uint64(18446744073709551615))).value
assert 255 == c_uint8.from_buffer(bytearray(c_uint8(255))).value
assert 255 == c_ubyte.from_buffer(bytearray(c_ubyte(255))).value
assert 4294967295 == c_uint.from_buffer(bytearray(
c_uint(4294967295))).value
if sys.maxsize > 2**32: # 64-bit.
assert 18446744073709551615 == c_ulong.from_buffer(
bytearray(c_ulong(18446744073709551615))).value
else:
assert 4294967295 == c_ulong.from_buffer(bytearray(
c_ulong(4294967295))).value
assert 18446744073709551615 == c_ulonglong.from_buffer(
bytearray(c_ulonglong(18446744073709551615))).value
assert 65535 == c_ushort.from_buffer(bytearray(c_ushort(65535))).value
def test_from_buffer_large():
"""Test .from_buffer attribute."""
data = b'\xb8~?./3\x02\x14\xb2\x89\xfc6A\xa4\x02\x05f\xdb\xb1\x04\xc3\x891\xad\x8cW\xcd\xda\x04A'
assert -72 == c_byte.from_buffer(bytearray(data)).value
assert 775913144 == c_int.from_buffer(bytearray(data)).value
assert -72 == c_int8.from_buffer(bytearray(data)).value
if sys.maxsize > 2**32: # 64-bit.
assert 1441771108444372664 == c_long.from_buffer(bytearray(data)).value
else:
assert 775913144 == c_long.from_buffer(bytearray(data)).value
assert 1441771108444372664 == c_longlong.from_buffer(bytearray(data)).value
assert 32440 == c_uint16.from_buffer(bytearray(data)).value
assert 775913144 == c_uint32.from_buffer(bytearray(data)).value
assert 1441771108444372664 == c_uint64.from_buffer(bytearray(data)).value
assert 184 == c_uint8.from_buffer(bytearray(data)).value
assert 184 == c_ubyte.from_buffer(bytearray(data)).value
assert 775913144 == c_uint.from_buffer(bytearray(data)).value
if sys.maxsize > 2**32: # 64-bit.
assert 1441771108444372664 == c_ulong.from_buffer(
bytearray(data)).value
else:
assert 775913144 == c_ulong.from_buffer(bytearray(data)).value
assert 1441771108444372664 == c_ulonglong.from_buffer(
bytearray(data)).value
assert 32440 == c_ushort.from_buffer(bytearray(data)).value
def test_zero():
"""Test zero integer value."""
assert 0 == c_byte.from_buffer(bytearray(c_byte())).value
assert 0 == c_int.from_buffer(bytearray(c_int())).value
assert 0 == c_int8.from_buffer(bytearray(c_int8())).value
assert 0 == c_long.from_buffer(bytearray(c_long())).value
assert 0 == c_longlong.from_buffer(bytearray(c_longlong())).value
assert 0 == c_uint16.from_buffer(bytearray(c_uint16())).value
assert 0 == c_uint32.from_buffer(bytearray(c_uint32())).value
assert 0 == c_uint64.from_buffer(bytearray(c_uint64())).value
assert 0 == c_uint8.from_buffer(bytearray(c_uint8())).value
assert 0 == c_ubyte.from_buffer(bytearray(c_ubyte())).value
assert 0 == c_uint.from_buffer(bytearray(c_uint())).value
assert 0 == c_ulong.from_buffer(bytearray(c_ulong())).value
assert 0 == c_ulonglong.from_buffer(bytearray(c_ulonglong())).value
assert 0 == c_ushort.from_buffer(bytearray(c_ushort())).value
def test_middle():
"""Test with arbitrary positive value."""
assert 123 == c_byte.from_buffer(bytearray(c_byte(123))).value
assert 1234567890 == c_int.from_buffer(bytearray(c_int(1234567890))).value
assert 123 == c_int8.from_buffer(bytearray(c_int8(123))).value
assert 1234567890 == c_long.from_buffer(bytearray(c_long(1234567890))).value
assert 1234567890123456789 == c_longlong.from_buffer(bytearray(c_longlong(1234567890123456789))).value
assert 12345 == c_uint16.from_buffer(bytearray(c_uint16(12345))).value
assert 1234567890 == c_uint32.from_buffer(bytearray(c_uint32(1234567890))).value
assert 12345678901234567890 == c_uint64.from_buffer(bytearray(c_uint64(12345678901234567890))).value
assert 123 == c_uint8.from_buffer(bytearray(c_uint8(123))).value
assert 123 == c_ubyte.from_buffer(bytearray(c_ubyte(123))).value
assert 1234567890 == c_uint.from_buffer(bytearray(c_uint(1234567890))).value
assert 1234567890 == c_ulong.from_buffer(bytearray(c_ulong(1234567890))).value
assert 12345678901234567890 == c_ulonglong.from_buffer(bytearray(c_ulonglong(12345678901234567890))).value
assert 12345 == c_ushort.from_buffer(bytearray(c_ushort(12345))).value
def test_zero():
"""Test zero integer value."""
assert 0 == c_byte.from_buffer(bytearray(c_byte())).value
assert 0 == c_int.from_buffer(bytearray(c_int())).value
assert 0 == c_int8.from_buffer(bytearray(c_int8())).value
assert 0 == c_long.from_buffer(bytearray(c_long())).value
assert 0 == c_longlong.from_buffer(bytearray(c_longlong())).value
assert 0 == c_uint16.from_buffer(bytearray(c_uint16())).value
assert 0 == c_uint32.from_buffer(bytearray(c_uint32())).value
assert 0 == c_uint64.from_buffer(bytearray(c_uint64())).value
assert 0 == c_uint8.from_buffer(bytearray(c_uint8())).value
assert 0 == c_ubyte.from_buffer(bytearray(c_ubyte())).value
assert 0 == c_uint.from_buffer(bytearray(c_uint())).value
assert 0 == c_ulong.from_buffer(bytearray(c_ulong())).value
assert 0 == c_ulonglong.from_buffer(bytearray(c_ulonglong())).value
assert 0 == c_ushort.from_buffer(bytearray(c_ushort())).value
def test_maximum():
"""Test maximum valid integer value."""
assert 127 == c_byte.from_buffer(bytearray(c_byte(127))).value
assert 2147483647 == c_int.from_buffer(bytearray(c_int(2147483647))).value
assert 127 == c_int8.from_buffer(bytearray(c_int8(127))).value
if sys.maxsize > 2 ** 32: # 64-bit.
assert 9223372036854775807 == c_long.from_buffer(bytearray(c_long(9223372036854775807))).value
else:
assert 2147483647 == c_long.from_buffer(bytearray(c_long(2147483647))).value
assert 9223372036854775807 == c_longlong.from_buffer(bytearray(c_longlong(9223372036854775807))).value
assert 65535 == c_uint16.from_buffer(bytearray(c_uint16(65535))).value
assert 4294967295 == c_uint32.from_buffer(bytearray(c_uint32(4294967295))).value
assert 18446744073709551615 == c_uint64.from_buffer(bytearray(c_uint64(18446744073709551615))).value
assert 255 == c_uint8.from_buffer(bytearray(c_uint8(255))).value
assert 255 == c_ubyte.from_buffer(bytearray(c_ubyte(255))).value
assert 4294967295 == c_uint.from_buffer(bytearray(c_uint(4294967295))).value
if sys.maxsize > 2 ** 32: # 64-bit.
assert 18446744073709551615 == c_ulong.from_buffer(bytearray(c_ulong(18446744073709551615))).value
else:
assert 4294967295 == c_ulong.from_buffer(bytearray(c_ulong(4294967295))).value
assert 18446744073709551615 == c_ulonglong.from_buffer(bytearray(c_ulonglong(18446744073709551615))).value
assert 65535 == c_ushort.from_buffer(bytearray(c_ushort(65535))).value
def test_middle():
"""Test with arbitrary positive value."""
assert 123 == c_byte.from_buffer(bytearray(c_byte(123))).value
assert 1234567890 == c_int.from_buffer(bytearray(c_int(1234567890))).value
assert 123 == c_int8.from_buffer(bytearray(c_int8(123))).value
assert 1234567890 == c_long.from_buffer(bytearray(
c_long(1234567890))).value
assert 1234567890123456789 == c_longlong.from_buffer(
bytearray(c_longlong(1234567890123456789))).value
assert 12345 == c_uint16.from_buffer(bytearray(c_uint16(12345))).value
assert 1234567890 == c_uint32.from_buffer(bytearray(
c_uint32(1234567890))).value
assert 12345678901234567890 == c_uint64.from_buffer(
bytearray(c_uint64(12345678901234567890))).value
assert 123 == c_uint8.from_buffer(bytearray(c_uint8(123))).value
assert 123 == c_ubyte.from_buffer(bytearray(c_ubyte(123))).value
assert 1234567890 == c_uint.from_buffer(bytearray(
c_uint(1234567890))).value
assert 1234567890 == c_ulong.from_buffer(bytearray(
c_ulong(1234567890))).value
assert 12345678901234567890 == c_ulonglong.from_buffer(
bytearray(c_ulonglong(12345678901234567890))).value
assert 12345 == c_ushort.from_buffer(bytearray(c_ushort(12345))).value
def test_from_buffer_large():
"""Test .from_buffer attribute."""
data = b'\xb8~?./3\x02\x14\xb2\x89\xfc6A\xa4\x02\x05f\xdb\xb1\x04\xc3\x891\xad\x8cW\xcd\xda\x04A'
assert -72 == c_byte.from_buffer(bytearray(data)).value
assert 775913144 == c_int.from_buffer(bytearray(data)).value
assert -72 == c_int8.from_buffer(bytearray(data)).value
if sys.maxsize > 2 ** 32: # 64-bit.
assert 1441771108444372664 == c_long.from_buffer(bytearray(data)).value
else:
assert 775913144 == c_long.from_buffer(bytearray(data)).value
assert 1441771108444372664 == c_longlong.from_buffer(bytearray(data)).value
assert 32440 == c_uint16.from_buffer(bytearray(data)).value
assert 775913144 == c_uint32.from_buffer(bytearray(data)).value
assert 1441771108444372664 == c_uint64.from_buffer(bytearray(data)).value
assert 184 == c_uint8.from_buffer(bytearray(data)).value
assert 184 == c_ubyte.from_buffer(bytearray(data)).value
assert 775913144 == c_uint.from_buffer(bytearray(data)).value
if sys.maxsize > 2 ** 32: # 64-bit.
assert 1441771108444372664 == c_ulong.from_buffer(bytearray(data)).value
else:
assert 775913144 == c_ulong.from_buffer(bytearray(data)).value
assert 1441771108444372664 == c_ulonglong.from_buffer(bytearray(data)).value
assert 32440 == c_ushort.from_buffer(bytearray(data)).value