def test_exceptions() -> None:
for trap_float_operation in (True, False):
with localcontext() as ctx:
ctx.traps[FloatOperation] = trap_float_operation
err_msg = "invalid satoshi amount: "
with pytest.raises(BTClibValueError, match=err_msg):
btc_from_sats(2_099_999_997_690_001)
err_msg = "invalid BTC amount: "
with pytest.raises(BTClibValueError, match=err_msg):
sats_from_btc(Decimal("20_999_999.97690001"))
err_msg = "too many decimals for a BTC amount: "
with pytest.raises(BTClibValueError, match=err_msg):
sats_from_btc(Decimal("0.123456789"))
# too many decimales, now with a float
with pytest.raises(BTClibValueError, match=err_msg):
valid_btc_amount(0.123456789)
with pytest.raises(TypeError):
btc_from_sats(2.5) # type: ignore
with pytest.raises(TypeError):
btc_from_sats(5 / 2) # type: ignore
with pytest.raises(ValueError):
btc_from_sats("2.5") # type: ignore
err_msg = "non-integer satoshi amount: "
with pytest.raises(BTClibTypeError, match=err_msg):
btc_from_sats(Decimal("2.5")) # type: ignore
def from_dict(cls: Type["TxOut"],
dict_: Mapping[str, Any],
check_validity: bool = True) -> "TxOut":
value = sats_from_btc(dict_["value"])
script_bin = dict_["scriptPubKey"]
network = dict_.get("network", "mainnet")
return cls(value, ScriptPubKey(script_bin, network), check_validity)
def test_self_consistency() -> None:
for trap_float_operation in (True, False):
with localcontext() as ctx:
ctx.traps[FloatOperation] = trap_float_operation
# 8.50390625 = 2177 / pow(2, 8)
# 8.50390625 * 100_000_000 is 850390625.0
# 8.50492428 * 100_000_000 is 850492427.9999999
btc_amounts = [0, 1, 8.50390625, 8.50492428]
cases: List[Union[int, float, str, Decimal]] = []
for num in btc_amounts:
cases += [num, float(num), str(num), f"{num:.7E}", Decimal(str(num))]
for btc_amount in cases:
exp_btc = Decimal(str(btc_amount)).normalize()
btc = btc_from_sats(sats_from_btc(btc_amount)) # type: ignore
assert btc == exp_btc
assert str(btc) == str(exp_btc)