def test_decode_encode(tp_code):
tp, code = tp_code
encode = io.encoder(tp)
decode = io.decoder(tp)
value = decode(code)
actual_code = encode(value)
assert actual_code == code
def program(*types):
"""Program decorator specifying types.
All but the last type are inputs; the last type is the output type.
"""
if not types:
raise SyntaxError('No output type: program{}'.format(types))
tps_in = types[:-1]
tp_out = types[-1]
encoders = map(io.encoder, tps_in)
decoder = io.decoder(tp_out)
return lambda fun: Program(encoders, decoder, fun)
def test_decode_error(tp, code):
decode = io.decoder(tp)
with pytest.raises(TypeError):
decode(code)
def test_decode(tp, code, value):
decode = io.decoder(tp)
actual_value = decode(code)
assert actual_value == value
