def test_flag_packing():
random.seed(8025816322119661921) # ayy lmao
nflags = len(Flag.__members__)
cases = chain(
random.sample(list(product((True, False), repeat=nflags)), 1000),
[[True] * nflags],
[[False] * nflags],
)
for flagvals in cases:
flags = dict(zip(Flag.__members__.keys(), flagvals))
assert Flag.unpack(Flag.pack(**flags)) == flags
def test_code_flags(sample_flags):
attr_map = {
'CO_NESTED': 'is_nested',
'CO_GENERATOR': 'is_generator',
'CO_COROUTINE': 'is_coroutine',
'CO_ITERABLE_COROUTINE': 'is_iterable_coroutine',
'CO_NEWLOCALS': 'constructs_new_locals',
}
for flags in sample_flags:
code = Code.from_pycode(pycode(
argcount=0,
kwonlyargcount=0,
nlocals=2,
stacksize=0,
flags=Flag.pack(**flags),
codestring=b'd\x00\x00S', # return None
constants=(None,),
names=(),
varnames=('a', 'b'),
filename='',
name='',
firstlineno=0,
lnotab=b'',
))
assert code.flags == flags
for flag, attr in attr_map.items():
if flags[flag]:
assert getattr(code, attr)
def test_flag_max():
assert Flag.pack(
CO_OPTIMIZED=True,
CO_NEWLOCALS=True,
CO_VARARGS=True,
CO_VARKEYWORDS=True,
CO_NESTED=True,
CO_GENERATOR=True,
CO_NOFREE=True,
CO_COROUTINE=True,
CO_ITERABLE_COROUTINE=True,
CO_FUTURE_DIVISION=True,
CO_FUTURE_ABSOLUTE_IMPORT=True,
CO_FUTURE_WITH_STATEMENT=True,
CO_FUTURE_PRINT_FUNCTION=True,
CO_FUTURE_UNICODE_LITERALS=True,
CO_FUTURE_BARRY_AS_BDFL=True,
CO_FUTURE_GENERATOR_STOP=True,
) == Flag.max
def test_flag_unpack_too_big():
assert all(Flag.unpack(Flag.max).values())
with pytest.raises(ValueError):
Flag.unpack(Flag.max + 1)
def test_flag_packing(sample_flags):
for flags in sample_flags:
assert Flag.unpack(Flag.pack(**flags)) == flags
def test_flag_unpack_too_big():
assert all(Flag.unpack(Flag.max).values())
with pytest.raises(ValueError):
Flag.unpack(Flag.max + 1)
