def test_london_configuration():
if not is_supported_pyevm_version_available():
pytest.skip("PyEVM is not available")
backend = PyEVMBackend(vm_configuration=((0, LondonVM), ))
assert backend.get_block_by_number(0)['base_fee_per_gas'] == 1000000000
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']
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']
def test_custom_virtual_machines():
if not is_supported_pyevm_version_available():
pytest.skip("PyEVM is not available")
backend = PyEVMBackend(vm_configuration=(
(0, FrontierVM),
(3, LondonVM),
))
# This should be a FrontierVM block
VM_at_2 = backend.chain.get_vm_class_for_block_number(2)
# This should be a LondonVM block
VM_at_3 = backend.chain.get_vm_class_for_block_number(3)
assert issubclass(VM_at_2, FrontierVM)
assert not issubclass(VM_at_2, LondonVM)
assert issubclass(VM_at_3, LondonVM)
# Right now, just test that EthereumTester doesn't crash
# Maybe some more sophisticated test to make sure the VMs are set correctly?
# We should to make sure the VM config translates all the way to the main
# tester, maybe with a custom VM that hard-codes some block value? that can
# be found with tester.get_block_by_number()?
EthereumTester(backend=backend)
def eth_tester():
if not is_supported_pyevm_version_available():
pytest.skip("PyEVM is not available")
backend = PyEVMBackend()
return EthereumTester(backend=backend)
