def test_range():
sink = Entropy()
sink.process(bytearray(range(0, 256)))
# full range of byte values should be 8.0
assert float(sink.result()) == 8.0
def test_empty():
sink = Entropy()
with Source(path.join(here, 'files/empty')) as source:
buffer = bytearray(0)
source.readinto(buffer)
sink.process(buffer)
# empty file has 0.0 entropy
assert float(sink.result()) == 0.0