def test_ondisk():
bs = BitSet([10, 11, 30, 50, 80])
st = RamStorage()
f = st.create_file("test")
size = bs.to_disk(f)
f.close()
f = st.open_file("test")
b = OnDiskBitSet(f, 0, size)
assert list(b) == list(bs)
assert b.after(0) == 10
assert b.after(10) == 11
assert b.after(80) is None
assert b.after(99) is None
assert b.before(0) is None
assert b.before(99) == 80
assert b.before(80) == 50
assert b.before(10) is None
f.seek(0)
b = BitSet.from_disk(f, size)
assert list(b) == list(bs)
def __init__(self, dbfile, compressat):
self._dbfile = dbfile
self._compressat = compressat
self._bitset = BitSet()