def test_1234():
source = Source(path.join(here, 'files/1234'))
assert len(source) == 4
with source:
assert len(source) == 4
buffer = bytearray(32)
assert source.readinto(buffer) == 4
assert buffer[:4] == b'\x01\x02\x03\x04'
def test_empty():
source = Source(path.join(here, 'files/empty'))
assert source.source.endswith('/files/empty')
assert source.fd is None
assert len(source) == 0
with source:
assert source.fd is not None
assert len(source) == 0
assert source.readinto(bytearray(32)) == 0
assert source.fd is None
