def test_marginal_utility():
"""Test the marginal utility."""
currency_holdings = {"FET": 100}
utility_params = {"good_id": 20.0}
exchange_params = {"FET": 10.0}
good_holdings = {"good_id": 2}
tx_fee = 9
preferences = Preferences()
preferences.set(
utility_params_by_good_id=utility_params,
exchange_params_by_currency_id=exchange_params,
tx_fee=tx_fee,
)
delta_good_holdings = {"good_id": 1}
delta_currency_holdings = {"FET": -5}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_holdings,
quantities_by_good_id=good_holdings,
)
marginal_utility = preferences.marginal_utility(
ownership_state=ownership_state,
delta_quantities_by_good_id=delta_good_holdings,
delta_amount_by_currency_id=delta_currency_holdings,
)
assert marginal_utility is not None, "Marginal utility must not be none."
def test_transaction_is_affordable_agent_is_buyer():
"""Check if the agent has the money to cover the sender_amount (the agent=sender is the buyer)."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 20}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
tx_message = TransactionMessage(
performative=TransactionMessage.Performative.PROPOSE_FOR_SETTLEMENT,
skill_callback_ids=[PublicId(AUTHOR, "a_skill", "0.1.0")],
tx_id="transaction0",
tx_sender_addr="agent_1",
tx_counterparty_addr="pk",
tx_amount_by_currency_id={"FET": -1},
tx_sender_fee=0,
tx_counterparty_fee=0,
tx_quantities_by_good_id={"good_id": 10},
info={"some_info_key": "some_info_value"},
ledger_id="fetchai",
tx_nonce="transaction nonce",
)
assert ownership_state.is_affordable_transaction(
tx_message=tx_message), "We should have the money for the transaction!"
def test_apply():
"""Test the apply function."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 2}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
tx_message = TransactionMessage(
performative=TransactionMessage.Performative.PROPOSE_FOR_SETTLEMENT,
skill_callback_ids=[PublicId(AUTHOR, "a_skill", "0.1.0")],
tx_id="transaction0",
tx_sender_addr="agent_1",
tx_counterparty_addr="pk",
tx_amount_by_currency_id={"FET": -20},
tx_sender_fee=5,
tx_counterparty_fee=0,
tx_quantities_by_good_id={"good_id": 10},
info={"some_info_key": "some_info_value"},
ledger_id="fetchai",
tx_nonce="transaction nonce",
)
list_of_transactions = [tx_message]
state = ownership_state
new_state = ownership_state.apply_transactions(
transactions=list_of_transactions)
assert (
state != new_state
), "after applying a list_of_transactions must have a different state!"
def tests_transaction_is_affordable_else_statement():
"""Check that the function returns false if we cannot satisfy any if/elif statements."""
currency_endowment = {"FET": 0}
good_endowment = {"good_id": 0}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
tx_message = TransactionMessage(
performative=TransactionMessage.Performative.PROPOSE_FOR_SETTLEMENT,
skill_callback_ids=[PublicId(AUTHOR, "a_skill", "0.1.0")],
tx_id="transaction0",
tx_sender_addr="agent_1",
tx_counterparty_addr="pk",
tx_amount_by_currency_id={"FET": 10},
tx_sender_fee=0,
tx_counterparty_fee=0,
tx_quantities_by_good_id={"good_id": 50},
info={"some_info_key": "some_info_value"},
ledger_id="fetchai",
tx_nonce="transaction nonce",
)
assert not ownership_state.is_affordable_transaction(
tx_message=tx_message), "We must reject the transaction."
def test_transaction_is_affordable_there_is_no_wealth():
"""Reject the transaction when there is no wealth exchange."""
currency_endowment = {"FET": 0}
good_endowment = {"good_id": 0}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
tx_message = TransactionMessage(
performative=TransactionMessage.Performative.PROPOSE_FOR_SETTLEMENT,
skill_callback_ids=[PublicId(AUTHOR, "a_skill", "0.1.0")],
tx_id="transaction0",
tx_sender_addr="agent_1",
tx_counterparty_addr="pk",
tx_amount_by_currency_id={"FET": 0},
tx_sender_fee=0,
tx_counterparty_fee=0,
tx_quantities_by_good_id={"good_id": 0},
info={"some_info_key": "some_info_value"},
ledger_id="fetchai",
tx_nonce="transaction nonce",
)
assert not ownership_state.is_affordable_transaction(
tx_message=tx_message), "We must reject the transaction."
def test_initialisation():
"""Test the initialisation of the ownership_state."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 2}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment, quantities_by_good_id=good_endowment,
)
assert ownership_state.amount_by_currency_id is not None
assert ownership_state.quantities_by_good_id is not None
assert ownership_state.is_initialized
def test_transaction_is_affordable_agent_is_seller(self):
"""Check if the agent has the goods (the agent=sender is the seller)."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 20}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
assert ownership_state.is_affordable_transaction(
terms=self.seller_terms), "We must reject the transaction."
def test_transaction_is_affordable_malformed(self):
"""Reject the transaction when there is no wealth exchange."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 20}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
assert not ownership_state.is_affordable_transaction(
terms=self.malformed_terms), "We must reject the transaction."
def test_transaction_is_affordable_agent_is_buyer(self):
"""Check if the agent has the money to cover the sender_amount (the agent=sender is the buyer)."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 20}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
assert ownership_state.is_affordable(
terms=self.buyer_terms
), "We should have the money for the transaction!"
def test_is_affordable_for_uninitialized():
"""Test the initialisation of the ownership_state."""
ownership_state = OwnershipState()
buyer_terms = Terms(
ledger_id=ETHEREUM,
sender_address="pk1",
counterparty_address="pk2",
amount_by_currency_id={"FET": -1},
is_sender_payable_tx_fee=True,
quantities_by_good_id={"good_id": 10},
nonce="transaction nonce",
)
assert ownership_state.is_affordable(
terms=buyer_terms), "Any transaction should be classed as affordable."
def test_apply(self):
"""Test the apply function."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 2}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
list_of_terms = [self.buyer_terms]
state = ownership_state
new_state = ownership_state.apply_transactions(list_of_terms=list_of_terms)
assert (
state != new_state
), "after applying a list_of_terms must have a different state!"
def test_non_initialized_ownership_state_raises_exception():
"""Test that non-initialized ownership state raises exception."""
ownership_state = OwnershipState()
with pytest.raises(ValueError):
ownership_state.amount_by_currency_id
with pytest.raises(ValueError):
ownership_state.quantities_by_good_id
def test_score_diff_from_transaction():
"""Test the difference between the scores."""
good_holdings = {"good_id": 2}
currency_holdings = {"FET": 100}
utility_params = {"good_id": 20.0}
exchange_params = {"FET": 10.0}
tx_fee = 3
ownership_state = OwnershipState()
ownership_state.set(amount_by_currency_id=currency_holdings,
quantities_by_good_id=good_holdings)
preferences = Preferences()
preferences.set(
utility_params_by_good_id=utility_params,
exchange_params_by_currency_id=exchange_params,
tx_fee=tx_fee,
)
tx_message = TransactionMessage(
performative=TransactionMessage.Performative.PROPOSE_FOR_SETTLEMENT,
skill_callback_ids=[PublicId(AUTHOR, "a_skill", "0.1.0")],
tx_id="transaction0",
tx_sender_addr="agent_1",
tx_counterparty_addr="pk",
tx_amount_by_currency_id={"FET": -20},
tx_sender_fee=preferences.seller_transaction_fee,
tx_counterparty_fee=preferences.buyer_transaction_fee,
tx_quantities_by_good_id={"good_id": 10},
info={"some_info_key": "some_info_value"},
ledger_id="fetchai",
tx_nonce="transaction nonce",
)
cur_score = preferences.utility(quantities_by_good_id=good_holdings,
amount_by_currency_id=currency_holdings)
new_state = ownership_state.apply_transactions([tx_message])
new_score = preferences.utility(
quantities_by_good_id=new_state.quantities_by_good_id,
amount_by_currency_id=new_state.amount_by_currency_id,
)
dif_scores = new_score - cur_score
score_difference = preferences.utility_diff_from_transaction(
ownership_state=ownership_state, tx_message=tx_message)
assert (
score_difference == dif_scores
), "The calculated difference must be equal to the return difference from the function."
def test_score_diff_from_transaction():
"""Test the difference between the scores."""
good_holdings = {"good_id": 2}
currency_holdings = {"FET": 100}
utility_params = {"good_id": 20.0}
exchange_params = {"FET": 10.0}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_holdings, quantities_by_good_id=good_holdings
)
preferences = Preferences()
preferences.set(
utility_params_by_good_id=utility_params,
exchange_params_by_currency_id=exchange_params,
)
terms = Terms(
ledger_id=ETHEREUM,
sender_address="agent_1",
counterparty_address="pk",
amount_by_currency_id={"FET": -20},
is_sender_payable_tx_fee=True,
quantities_by_good_id={"good_id": 10},
nonce="transaction nonce",
)
cur_score = preferences.utility(
quantities_by_good_id=good_holdings, amount_by_currency_id=currency_holdings
)
new_state = ownership_state.apply_transactions([terms])
new_score = preferences.utility(
quantities_by_good_id=new_state.quantities_by_good_id,
amount_by_currency_id=new_state.amount_by_currency_id,
)
diff_scores = new_score - cur_score
score_difference = preferences.utility_diff_from_transaction(
ownership_state=ownership_state, terms=terms
)
assert (
score_difference == diff_scores
), "The calculated difference must be equal to the return difference from the function."
assert not preferences.is_utility_enhancing(
ownership_state=ownership_state, terms=terms
), "Should not enhance utility."
def test_transaction_update_receive():
"""Test the transaction update when receiving tokens."""
currency_endowment = {"FET": 75}
good_endowment = {"good_id": 30}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
assert ownership_state.amount_by_currency_id == currency_endowment
assert ownership_state.quantities_by_good_id == good_endowment
tx_message = TransactionMessage(
performative=TransactionMessage.Performative.PROPOSE_FOR_SETTLEMENT,
skill_callback_ids=[PublicId(AUTHOR, "a_skill", "0.1.0")],
tx_id="transaction0",
tx_sender_addr="agent_1",
tx_counterparty_addr="pk",
tx_amount_by_currency_id={"FET": 20},
tx_sender_fee=5,
tx_counterparty_fee=0,
tx_quantities_by_good_id={"good_id": -10},
info={"some_info_key": "some_info_value"},
ledger_id="fetchai",
tx_nonce="transaction nonce",
)
ownership_state._update(tx_message=tx_message)
expected_amount_by_currency_id = {"FET": 90}
expected_quantities_by_good_id = {"good_id": 20}
assert ownership_state.amount_by_currency_id == expected_amount_by_currency_id
assert ownership_state.quantities_by_good_id == expected_quantities_by_good_id
def test_is_utility_enhancing_uninitialized():
"""Test is_utility_enhancing when the states are uninitialized."""
ownership_state = OwnershipState()
preferences = Preferences()
terms = Terms(
ledger_id="ethereum",
sender_address="agent_1",
counterparty_address="pk",
amount_by_currency_id={"FET": -20},
is_sender_payable_tx_fee=True,
quantities_by_good_id={"good_id": 10},
nonce="transaction nonce",
)
assert preferences.is_utility_enhancing(
ownership_state=ownership_state,
terms=terms), "Should enhance utility."
def setup_class(cls):
"""Initialise the decision maker."""
cls._patch_logger()
cls.multiplexer = Multiplexer([_make_dummy_connection()])
private_key_pem_path = os.path.join(CUR_PATH, "data",
"fet_private_key.txt")
eth_private_key_pem_path = os.path.join(CUR_PATH, "data",
"fet_private_key.txt")
cls.wallet = Wallet({
FetchAICrypto.identifier:
private_key_pem_path,
EthereumCrypto.identifier:
eth_private_key_pem_path,
})
cls.ledger_apis = LedgerApis(
{FetchAICrypto.identifier: DEFAULT_FETCHAI_CONFIG},
FetchAICrypto.identifier)
cls.agent_name = "test"
cls.identity = Identity(
cls.agent_name,
addresses=cls.wallet.addresses,
default_address_key=FetchAICrypto.identifier,
)
cls.ownership_state = OwnershipState()
cls.preferences = Preferences()
cls.decision_maker_handler = DecisionMakerHandler(
identity=cls.identity,
wallet=cls.wallet,
ledger_apis=cls.ledger_apis,
)
cls.decision_maker = DecisionMaker(cls.decision_maker_handler)
cls.multiplexer.connect()
cls.tx_id = "transaction0"
cls.tx_sender_addr = "agent_1"
cls.tx_counterparty_addr = "pk"
cls.info = {"some_info_key": "some_info_value"}
cls.ledger_id = "fetchai"
cls.decision_maker.start()
def test_transaction_update_receive(self):
"""Test the transaction update when receiving tokens."""
currency_endowment = {"FET": 100}
good_endowment = {"good_id": 20}
ownership_state = OwnershipState()
ownership_state.set(
amount_by_currency_id=currency_endowment,
quantities_by_good_id=good_endowment,
)
assert ownership_state.amount_by_currency_id == currency_endowment
assert ownership_state.quantities_by_good_id == good_endowment
ownership_state.update(terms=self.seller_terms)
expected_amount_by_currency_id = {"FET": 101}
expected_quantities_by_good_id = {"good_id": 10}
assert ownership_state.amount_by_currency_id == expected_amount_by_currency_id
assert ownership_state.quantities_by_good_id == expected_quantities_by_good_id
