def test_unpack_primitive():
s = struct.pack('q', 1234)
assert unpack_primitive(ord('q'), s, 0) == 1234
#
# left bound check
with pytest.raises(IndexError):
unpack_primitive(ord('q'), s, -8)
#
# right bound check
with pytest.raises(IndexError):
unpack_primitive(ord('q'), s, 1) # not enough bytes
def test_uint64(self):
if sys.maxint != (1 << 63) - 1:
py.test.skip('64 bit only')
if IS_PYPY and sys.pypy_version_info < (5, 6):
py.test.skip('Broken on PyPy<5.6')
#
buf = struct.pack('Q', sys.maxint)
val = unpack_primitive(ord('Q'), buf, 0)
assert val == sys.maxint
assert type(val) is int
#
buf = struct.pack('Q', sys.maxint + 1)
val = unpack_primitive(ord('Q'), buf, 0)
assert val == sys.maxint + 1
assert type(val) is long
def sum_unpack(buf):
mybufs = (buf, buf)
res = 0
for i in range(self.N):
buf = mybufs[i % 2]
res += unpack_primitive(ord('q'), buf, 16)
return res
def test_unpack_primitive_ints(self):
buf = '\xff' * 8
assert unpack_primitive(ord('b'), buf, 0) == -1
assert unpack_primitive(ord('h'), buf, 0) == -1
assert unpack_primitive(ord('i'), buf, 0) == -1
assert unpack_primitive(ord('q'), buf, 0) == -1
#
assert unpack_primitive(ord('B'), buf, 0) == (1 << 8) - 1
assert unpack_primitive(ord('H'), buf, 0) == (1 << 16) - 1
assert unpack_primitive(ord('I'), buf, 0) == (1 << 32) - 1
assert unpack_primitive(ord('Q'), buf, 0) == (1 << 64) - 1
def test_errors(self):
buf = b'\xff' * 8
with pytest.raises(IndexError):
unpack_primitive(ord('q'), buf, -1)
with pytest.raises(IndexError):
unpack_primitive(ord('q'), buf, 8)
with pytest.raises(TypeError):
unpack_primitive(ord('q'), 42, 0)
def test_bytearray(self):
buf = bytearray(struct.pack('q', 42))
assert unpack_primitive(ord('q'), buf, 0) == 42
def test_unpack_primitive_floats(self):
buf = struct.pack('f', math.pi)
assert unpack_primitive(ord('f'), buf, 0) == struct.unpack('f', buf)[0]
#
buf = struct.pack('d', math.pi)
assert unpack_primitive(ord('d'), buf, 0) == struct.unpack('d', buf)[0]
def setbool(self, byteoffset, bitoffset, value):
ifmt = Types.uint8.ifmt
current = unpack_primitive(ifmt, self._buf, byteoffset)
current |= (value << bitoffset)
self.set(ifmt, byteoffset, current)