def test_adler32():
"""
When called with a string, zlib.crc32 should compute its adler 32
checksum and return it as an unsigned 32 bit integer.
"""
assert rzlib.adler32('') == r_uint(1)
assert rzlib.adler32('\0') == r_uint(65537)
assert rzlib.adler32('hello, world.') == r_uint(571147447)
assert rzlib.adler32('x' * 23) == r_uint(2172062409)
def test_adler32():
"""
When called with a string, zlib.crc32 should compute its adler 32
checksum and return it as an unsigned 32 bit integer.
"""
assert rzlib.adler32('') == r_uint(1)
assert rzlib.adler32('\0') == r_uint(65537)
assert rzlib.adler32('hello, world.') == r_uint(571147447)
assert rzlib.adler32('x' * 23) == r_uint(2172062409)
def adler32(space, string, start=rzlib.ADLER32_DEFAULT_START):
"""
adler32(string[, start]) -- Compute an Adler-32 checksum of string.
An optional starting value can be specified. The returned checksum is
an integer.
"""
checksum = rzlib.adler32(string, start)
# See comments in crc32() for the following line
checksum = unsigned_to_signed_32bit(checksum)
return space.wrap(checksum)
def adler32(space, string, start = rzlib.ADLER32_DEFAULT_START):
"""
adler32(string[, start]) -- Compute an Adler-32 checksum of string.
An optional starting value can be specified. The returned checksum is
an integer.
"""
checksum = rzlib.adler32(string, start)
# See comments in crc32() for the following line
checksum = unsigned_to_signed_32bit(checksum)
return space.wrap(checksum)
def adler32(space, string, start = rzlib.ADLER32_DEFAULT_START):
"""
adler32(string[, start]) -- Compute an Adler-32 checksum of string.
An optional starting value can be specified. The returned checksum is
an integer.
"""
checksum = rzlib.adler32(string, start)
# This is, perhaps, a little stupid. zlib returns the checksum unsigned.
# CPython exposes it as a signed value, though. -exarkun
# The value *is* unsigned on 64-bit platforms in CPython... bah.
# For now let's do the same as CPython and boldly cast to a C long. -arigo
checksum = intmask(checksum)
return space.wrap(checksum)
def test_adler32_start_value():
"""
When called with a string and an integer, zlib.adler32 should compute
the adler 32 checksum of the string using the integer as the starting
value.
"""
assert rzlib.adler32('', 42) == r_uint(42)
assert rzlib.adler32('\0', 42) == r_uint(2752554)
assert rzlib.adler32('hello, world.', 42) == r_uint(606078176)
assert rzlib.adler32('x' * 23, 42) == r_uint(2233862898)
hello = 'hello, '
hellosum = rzlib.adler32(hello)
world = 'world.'
helloworldsum = rzlib.adler32(world, hellosum)
assert helloworldsum == rzlib.adler32(hello + world)
def test_adler32_start_value():
"""
When called with a string and an integer, zlib.adler32 should compute
the adler 32 checksum of the string using the integer as the starting
value.
"""
assert rzlib.adler32('', 42) == r_uint(42)
assert rzlib.adler32('\0', 42) == r_uint(2752554)
assert rzlib.adler32('hello, world.', 42) == r_uint(606078176)
assert rzlib.adler32('x' * 23, 42) == r_uint(2233862898)
hello = 'hello, '
hellosum = rzlib.adler32(hello)
world = 'world.'
helloworldsum = rzlib.adler32(world, hellosum)
assert helloworldsum == rzlib.adler32(hello + world)
