def test_valid_key_forms():
valid_names = ['cast']
for name in valid_names:
caster = from_config({name: 'float'})
assert caster is not None
assert caster.cast('1.1') == 1.1
def test_hex_cast_value_error():
caster = from_config({'cast': 'hex'})
with pytest.raises(SpecException):
caster.cast('abc123')
def test_none_is_none():
caster = from_config({'cast': None})
assert caster is None
def test_invalid_casting_float():
with pytest.raises(SpecException):
from_config({'cast': 'float'}).cast('456def')
def test_invalid_casting_int():
with pytest.raises(SpecException):
from_config({'cast': 'int'}).cast('abc123')
def test_valid_type_cast_forms(input_value, cast_type, expected_value):
caster = from_config({'cast': cast_type})
assert caster is not None
assert caster.cast(input_value) == expected_value