def test_setup_landmask_retry_weakref():
delete_mask()
os.makedirs(tmpdir, exist_ok=True)
m = os.stat(tmpdir).st_mode
try:
print("setting permissions on tmpdir to 0o000:", tmpdir)
os.chmod(tmpdir, 0o000)
assert Landmask.__mask__() is None
l = Landmask()
assert Landmask.__mask__() is not None
assert l.mask is not None
# second landmask should also use the same memmap as previous
l2 = Landmask()
assert l2.mmapf == l.mmapf
assert l2.mask is l.mask
# TODO: does not seem to be collected in this case!
# del l
# del l2
# gc.collect()
# assert Landmask.__mask__() is None
finally:
os.chmod(tmpdir, m)
def test_generate_landmask_static():
l = Landmask() # make sure landmask is already generated
assert Landmask.__mask__() is not None
del l
gc.collect()
assert Landmask.__mask__() is None
l = Landmask()
assert Landmask.__mask__() is not None
l2 = Landmask()
assert l2.mask is not None
assert l.mask is Landmask.__mask__()
assert l2.mask is Landmask.__mask__()
def test_landmask_weakref():
assert Landmask.__mask__() is None
l = Landmask()
assert Landmask.__mask__() is not None
assert l.mask is not None
l2 = Landmask()
del l
gc.collect()
assert Landmask.__mask__() is not None
assert l2.mask is not None
del l2
gc.collect()
assert Landmask.__mask__() is None