def get_token_by_symbol(cls, symbol: str):
""" Get raw_transaction by encoding Transaction object token by provided symbol """
token = cls.get_token_by_attribute('symbol', symbol)
if not token:
logger.warning(f'No token found for symbol {symbol}')
return
return EthToken.from_namedtuple(token)
def get_token_by_address(self, address: str):
token = self.get_token_by_attribute(
'address', address) or self.get_token_from_token_contract(address)
if not token:
logger.warning(f'No token found for address {address}')
return
return EthToken.from_namedtuple(token)
def test_token_precision_validation(value, token_decimals):
token = EthToken.from_namedtuple(
Token('Test_token', 'TST', '0x123', token_decimals))
with pytest.raises(ValueError) as error:
token.validate_precision(value)
assert str(
error.value
) == f'Test_token token supports at most {token_decimals} decimal places.'
def get_token_by_symbol(cls, symbol: str) -> Optional[EthToken]:
'''
Get a known token (from clove) by its symbol.
Args:
symbol (str): token symbol
Returns:
EthToken, None: Ethereum Token namedtuple or None if there is no matching token
Example:
>>> from clove.network import EthereumTestnet
>>> network = EthereumTestnet()
>>> network.get_token_by_symbol('PGT')
<clove.network.ethereum.token.EthToken at 0x7f7b3fdffe48>
'''
token = cls.get_token_by_attribute('symbol', symbol)
if not token:
logger.warning(f'No token found for symbol {symbol}')
return
return EthToken.from_namedtuple(token)
def get_token_by_address(self, address: str) -> Optional[EthToken]:
'''
Get token by its address.
Args:
address (str): token address
Returns:
EthToken, None: Ethereum Token namedtuple
Example:
>>> from clove.network import EthereumTestnet
>>> network = EthereumTestnet()
>>> network.get_token_by_address('0x2c76B98079Bb5520FF4BDBC1bf5012AC3E87ddF6')
<clove.network.ethereum.token.EthToken at 0x7f7b3fed1eb8>
'''
token = self.get_token_by_attribute(
'address', address) or self.get_token_from_token_contract(address)
if not token:
logger.warning(f'No token found for address {address}')
return
return EthToken.from_namedtuple(token)
def test_token_value_base_units_conversion(base_unit_value, float_value):
token = EthToken()
assert token.value_to_base_units(float_value) == base_unit_value
assert token.value_from_base_units(base_unit_value) == Decimal(
str(float_value))