nucypher/tests/mock/interfaces.py

85 lines
3.0 KiB
Python

"""
This file is part of nucypher.
nucypher is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
nucypher is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with nucypher. If not, see <https://www.gnu.org/licenses/>.
"""
import json
from contextlib import contextmanager
from typing import Union
from nucypher.blockchain.eth.clients import EthereumClient
from nucypher.blockchain.eth.networks import NetworksInventory
from nucypher.blockchain.eth.registry import (
BaseContractRegistry,
CanonicalRegistrySource,
RegistrySourceManager
)
from nucypher.config.constants import TEMPORARY_DOMAIN
from tests.constants import MOCK_ETH_PROVIDER_URI
from tests.utils.blockchain import TesterBlockchain
@contextmanager
def mock_registry_source_manager(test_registry):
class MockRegistrySource(CanonicalRegistrySource):
name = "Mock Registry Source"
is_primary = False
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if self.network != TEMPORARY_DOMAIN:
raise ValueError(f"Somehow, MockRegistrySource is trying to get a registry for '{self.network}'. "
f"Only '{TEMPORARY_DOMAIN}' is supported.'")
def get_publication_endpoint(self) -> str:
return f":mock-registry-source:/{self.network}/{self.registry_name}"
def fetch_latest_publication(self) -> Union[str, bytes]:
self.logger.debug(f"Reading registry at {self.get_publication_endpoint()}")
if self.registry_name == BaseContractRegistry.REGISTRY_NAME:
registry_data = test_registry.read()
raw_registry_data = json.dumps(registry_data)
return raw_registry_data
real_inventory = NetworksInventory.NETWORKS
try:
RegistrySourceManager._FALLBACK_CHAIN = (MockRegistrySource,)
NetworksInventory.NETWORKS = (TEMPORARY_DOMAIN,)
yield real_inventory
finally:
NetworksInventory.NETWORKS = real_inventory
class MockBlockchain(TesterBlockchain):
ETH_PROVIDER_URI = MOCK_ETH_PROVIDER_URI
def __init__(self):
super().__init__(compile_now=False)
class MockEthereumClient(EthereumClient):
def __init__(self, w3):
super().__init__(w3=w3, node_technology=None, version=None, platform=None, backend=None)
def connect(self, *args, **kwargs) -> bool:
if 'compile_now' in kwargs:
raise ValueError("Mock testerchain cannot handle solidity source compilation.")
return super().connect(compile_now=False, *args, **kwargs)