def test_nano_conversions(raw, nano):
assert convert(raw,
source=NanoDenomination.RAW,
target=NanoDenomination.NANO) == nano
assert convert(nano,
source=NanoDenomination.NANO,
target=NanoDenomination.RAW) == raw
def test_inexact_conversion():
with pytest.raises(Inexact):
# The amount to convert is more precise than a single raw.
# Ensure an exception is raised to prevent precision loss.
convert(Decimal("340282366.9209384634633746074317682114506"),
source=NanoDenomination.RAW,
target=NanoDenomination.MEGANANO)
def test_mnano_conversions(raw, mnano):
assert convert(raw,
source=NanoDenomination.RAW,
target=NanoDenomination.MEGANANO) == mnano
assert convert(mnano,
source=NanoDenomination.MEGANANO,
target=NanoDenomination.RAW) == raw
def test_knano_conversions(raw, knano):
assert convert(raw,
source=NanoDenomination.RAW,
target=NanoDenomination.KILONANO) == knano
assert convert(knano,
source=NanoDenomination.KILONANO,
target=NanoDenomination.RAW) == raw
def test_millinano_meganano_conversions(millinano, meganano):
assert convert(millinano,
source=NanoDenomination.MILLINANO,
target=NanoDenomination.MEGANANO) == meganano
assert convert(meganano,
source=NanoDenomination.MEGANANO,
target=NanoDenomination.MILLINANO) == millinano
assert convert(millinano, source="millinano", target="Mnano") == meganano
assert convert(meganano, source="Mnano", target="millinano") == millinano
def test_max_nano_value():
with pytest.raises(ValueError):
# Value is larger than (2**128)-1 raw
convert(Decimal("340282366.920938463463374607431768211456"),
source=NanoDenomination.MEGANANO,
target=NanoDenomination.RAW)
with pytest.raises(ValueError):
# Value is larger than (2**128)-1 raw
convert(Decimal("340282366920938463463374607431768211456"),
source=NanoDenomination.RAW,
target=NanoDenomination.MEGANANO)
convert(Decimal("340282366.920938463463374607431768211455"),
source=NanoDenomination.MEGANANO,
target=NanoDenomination.RAW) == Decimal(
"340282366920938463463374607431768211455")
convert(Decimal("340282366920938463463374607431768211455"),
source=NanoDenomination.RAW,
target=NanoDenomination.MEGANANO) == Decimal(
"340282366.920938463463374607431768211455")
def test_floats_not_allowed():
with pytest.raises(TypeError):
convert(1.5, source=NanoDenomination.NANO, target=NanoDenomination.RAW)
