def test_from_mnemonic(self):
# Initialize PyEVM backend using MNEMONIC, num_accounts,
# and state overrides (balance)
num_accounts = 3
balance = to_wei(15, "ether") # Give each account 15 Eth
pyevm_backend = PyEVMBackend.from_mnemonic(
MNEMONIC,
num_accounts=num_accounts,
genesis_state_overrides={"balance": balance})
# Each of these accounts stems from the MNEMONIC
expected_accounts = [
"0x1e59ce931b4cfea3fe4b875411e280e173cb7a9c",
"0xc89d42189f0450c2b2c3c61f58ec5d628176a1e7",
"0x318b469bba396aec2c60342f9441be36a1945174"
]
# Test integration with EthereumTester
tester = EthereumTester(backend=pyevm_backend)
actual_accounts = tester.get_accounts()
assert len(actual_accounts) == num_accounts
for i in range(0, num_accounts):
actual = actual_accounts[i]
expected = expected_accounts[i]
assert actual.lower() == expected.lower()
assert tester.get_balance(account=actual) == balance
def test_berlin_configuration():
if not is_supported_pyevm_version_available():
pytest.skip("PyEVM is not available")
mnemonic = "test test test test test test test test test test test junk"
vm_configuration = ((0, BerlinVM), )
backend = PyEVMBackend.from_mnemonic(mnemonic,
vm_configuration=vm_configuration)
# Berlin blocks shouldn't have base_fee_per_gas,
# since London was the fork that introduced base_fee_per_gas
with pytest.raises(KeyError):
backend.get_block_by_number(0)['base_fee_per_gas']
EthereumTester(backend=backend)
def test_berlin_configuration():
if not is_supported_pyevm_version_available():
pytest.skip("PyEVM is not available")
mnemonic = "test test test test test test test test test test test junk"
vm_configuration = ((0, BerlinVM), )
backend = PyEVMBackend.from_mnemonic(mnemonic,
vm_configuration=vm_configuration)
# Berlin blocks shouldn't have base_fee_per_gas,
# since London was the fork that introduced base_fee_per_gas
with pytest.raises(KeyError):
backend.get_block_by_number(0)['base_fee_per_gas']
tester = EthereumTester(backend=backend)
# Test that outbound block validation doesn't break by getting a block.
berlin_block = tester.get_block_by_number(0)
# Test that outbound block normalization removes `base_fee_per_gas`.
with pytest.raises(KeyError):
berlin_block['base_fee_per_gas']
