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import pytest
from jeepney.low_level import *
HELLO_METHOD_CALL = (
b'l\x01\x00\x01\x00\x00\x00\x00\x01\x00\x00\x00m\x00\x00\x00\x01\x01o\x00\x15'
b'\x00\x00\x00/org/freedesktop/DBus\x00\x00\x00\x02\x01s\x00\x14\x00\x00\x00'
b'org.freedesktop.DBus\x00\x00\x00\x00\x03\x01s\x00\x05\x00\x00\x00Hello\x00'
b'\x00\x00\x06\x01s\x00\x14\x00\x00\x00org.freedesktop.DBus\x00\x00\x00\x00')
def test_parser_simple():
msg = Parser().feed(HELLO_METHOD_CALL)[0]
assert msg.header.fields[HeaderFields.member] == 'Hello'
def chunks(src, size):
pos = 0
while pos < len(src):
end = pos + size
yield src[pos:end]
pos = end
def test_parser_chunks():
p = Parser()
chunked = list(chunks(HELLO_METHOD_CALL, 16))
for c in chunked[:-1]:
assert p.feed(c) == []
msg = p.feed(chunked[-1])[0]
assert msg.header.fields[HeaderFields.member] == 'Hello'
def test_multiple():
msgs = Parser().feed(HELLO_METHOD_CALL * 6)
assert len(msgs) == 6
for msg in msgs:
assert msg.header.fields[HeaderFields.member] == 'Hello'
def test_roundtrip():
msg = Parser().feed(HELLO_METHOD_CALL)[0]
assert msg.serialise() == HELLO_METHOD_CALL
def test_serialise_dict():
data = {
'a': 'b',
'de': 'f',
}
string_type = simple_types['s']
sig = Array(DictEntry([string_type, string_type]))
print(sig.serialise(data, 0, Endianness.little))
assert sig.serialise(data, 0, Endianness.little) == (
b'\x1e\0\0\0' + # Length
b'\0\0\0\0' + # Padding
b'\x01\0\0\0a\0\0\0' +
b'\x01\0\0\0b\0\0\0' +
b'\x02\0\0\0de\0\0' +
b'\x01\0\0\0f\0'
)
def test_parse_signature():
sig = parse_signature(list('(a{sv}(oayays)b)'))
print(sig)
assert sig == Struct([
Array(DictEntry([simple_types['s'], Variant()])),
Struct([
simple_types['o'],
Array(simple_types['y']),
Array(simple_types['y']),
simple_types['s']
]),
simple_types['b'],
])
class fake_list(list):
def __init__(self, n):
super().__init__()
self._n = n
def __len__(self):
return self._n
def __iter__(self):
return iter(range(self._n))
def test_array_limit():
# The spec limits arrays to 64 MiB
a = Array(FixedType(8, 'Q')) # 'at' - array of uint64
a.serialise(fake_list(100), 0, Endianness.little)
with pytest.raises(SizeLimitError):
a.serialise(fake_list(2**23 + 1), 0, Endianness.little)