def test_wrong_asset_type(instrument_constructor):
'''Try to transfer eg a cheque from one asset account to another of a
different type. Should fail'''
ta_asset1 = data.TransferAccounts().initial_balance()
ta_asset2 = data.TransferAccounts().initial_balance()
source = ta_asset1.source
target = ta_asset2.target
instrument = instrument_constructor(source, target, 50)
with error.expected(ReturnValueError):
transfer(instrument, source, target)
ta_asset2.assert_balances(-100, 100, 0)
def test_cancel_instrument(instrument_constructor):
'''Cancel an instrument and make sure it can't be deposited.'''
accounts = data.TransferAccounts().initial_balance()
instrument = instrument_constructor(accounts.source, accounts.target, 50)
write(instrument)
instrument.cancel()
with error.expected(ReturnValueError):
instrument.deposit(accounts.target.nym, accounts.target)
accounts.assert_balances(-100, 100, 0)
def prepared_accounts(request):
accts = data.TransferAccounts()
accts.initial_balance()
return accts
