def test_contract_epoch_fetcher_udpates_last_fetch_height(
w3, tester, validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
mine_until(w3, tester, 123)
fetcher.fetch_new_epochs()
assert fetcher.last_fetch_height == 123
def test_fetch_first_epoch(w3, validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
validators = initialize_validators(contract)
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
epochs = fetcher.fetch_new_epochs()
assert epochs == [Epoch(100, validators, 0)]
def test_fetch_second_time(w3, validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
initialize_validators(contract)
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
fetcher.fetch_new_epochs()
epochs = fetcher.fetch_new_epochs()
assert epochs == []
def test_fetch_single_update(w3, tester, validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
initialize_validators(contract)
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
fetcher.fetch_new_epochs()
mine_until(w3, tester, 105)
validators, height = change_validators(contract)
epochs = fetcher.fetch_new_epochs()
assert epochs == [Epoch(height, validators, 0)]
def test_contract_epoch_fetcher_initialization(w3, validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
assert fetcher.earliest_fetched_epoch is None
assert fetcher.latest_fetched_epoch is None
assert fetcher.last_fetch_height is None
def test_fetch_multiple_updates(w3, tester, validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
initialize_validators(contract)
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
fetcher.fetch_new_epochs()
mine_until(w3, tester, 105)
validators1, height1 = change_validators(contract)
mine_until(w3, tester, height1 + 10)
validators2, height2 = change_validators(contract)
epochs = fetcher.fetch_new_epochs()
assert epochs == [
Epoch(height1, validators1, 0),
Epoch(height2, validators2, 0)
]
def test_contract_epoch_fetcher_sets_latest_epoch(w3, tester,
validator_set_contract):
val_def, (contract, ) = initialize_scenario(validator_set_contract,
transition_heights=[100])
validators1 = initialize_validators(contract)
fetcher = ContractEpochFetcher(w3, val_def[0], 0)
fetcher.fetch_new_epochs()
assert fetcher.latest_fetched_epoch == Epoch(100, validators1, 0)
mine_until(w3, tester, 105)
validators2, height2 = change_validators(contract)
fetcher.fetch_new_epochs()
assert fetcher.latest_fetched_epoch == Epoch(height2, validators2, 0)