def test_state_db(chain_without_block_validation): # noqa: F811
vm = chain_without_block_validation.get_vm()
address = decode_hex('0xa94f5374fce5edbc8e2a8697c15331677e6ebf0c')
initial_state_root = vm.block.header.state_root
with vm.state_db(read_only=True) as state_db:
state_db.get_balance(address)
assert vm.block.header.state_root == initial_state_root
with vm.state_db() as state_db:
state_db.set_balance(address, 10)
assert vm.block.header.state_root != initial_state_root
with pytest.raises(AssertionError):
with vm.state_db(read_only=True) as state_db:
state_db.set_balance(address, 0)
def test_state_db(chain_without_block_validation): # noqa: F811
vm = chain_without_block_validation.get_vm()
address = decode_hex('0xa94f5374fce5edbc8e2a8697c15331677e6ebf0c')
initial_state_root = vm.block.header.state_root
# test cannot write to state_db after context exits
with vm.state_db() as state_db:
pass
with pytest.raises(TypeError):
state_db.increment_nonce(address)
with vm.state_db(read_only=True) as state_db:
state_db.get_balance(address)
assert vm.block.header.state_root == initial_state_root
with vm.state_db() as state_db:
state_db.set_balance(address, 10)
assert vm.block.header.state_root != initial_state_root
with vm.state_db(read_only=True) as state_db:
with pytest.raises(TypeError):
state_db.set_balance(address, 0)
def state(chain_without_block_validation):
return chain_without_block_validation.get_vm().state
def state(chain_without_block_validation):
return chain_without_block_validation.get_vm().state
def state(chain_without_block_validation):
state = chain_without_block_validation.get_vm().state
with state.mutable_state_db() as state_db:
state_db.set_balance(CANONICAL_ADDRESS_A, 1000)
return state
def state(chain_without_block_validation):
state = chain_without_block_validation.get_vm().state
with state.state_db() as state_db:
state_db.set_balance(CANONICAL_ADDRESS_A, 1000)
return state