subcurrency.py

from sim import Contract, Simulation, Tx, log, stop

class SubCurrency(Contract):
    """Sub-currency contract example from https://github.com/ethereum/wiki/wiki/%5BEnglish%5D-White-Paper#wiki-sub-currencies"""

    def run(self, tx, contract, block):
        Contract.load(self, "examples/subcurrency.cll", tx, contract, block)


class SubCurrencyRun(Simulation):

    contract = SubCurrency(MYCREATOR="alice")

    def test_insufficient_fee(self):
        tx = Tx(sender='alice', value=10)
        self.run(tx, self.contract)
        assert self.stopped == 'Insufficient fee'

    def test_creation(self):
        tx = Tx(sender='alice', value=100)
        self.run(tx, self.contract)
        assert self.contract.storage['alice'] == 10 ** 18

    def test_alice_to_bob(self):
        tx = Tx(sender='alice', value=100, data=['bob', 1000])
        self.run(tx, self.contract)
        assert self.contract.storage['alice'] == 10 ** 18 - 1000
        assert self.contract.storage['bob'] == 1000

    def test_alice_to_invalid(self):
        tx = Tx(sender='alice', value=100, data=[123, 1000])
        self.run(tx, self.contract)
        assert self.stopped == 'tx.data[0] out of bounds: 123'
        assert self.contract.storage['bob'] == 1000
        assert self.contract.storage['charlie'] == 0

    def test_bob_to_charlie_invalid(self):
        tx = Tx(sender='bob', value=100, data=['charlie', 1001])
        self.run(tx, self.contract)
        assert self.stopped == 'Insufficient funds, bob has 1000 needs 1001'
        assert self.contract.storage['bob'] == 1000
        assert self.contract.storage['charlie'] == 0

    def test_bob_to_charlie_valid(self):
        tx = Tx(sender='bob', value=100, data=['charlie', 1000])
        self.run(tx, self.contract)
        assert self.contract.storage['bob'] == 0
        assert self.contract.storage['charlie'] == 1000

    def test_storage_result(self):
        self.log(self.contract.storage)

    # # Python module export
    # def test_export(self):
    #     print "\nClosure module\n==="
    #     print self.contract.closure
    #     print "\n===\nEnd module"