48 lines
1.9 KiB
Python
48 lines
1.9 KiB
Python
import copy
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from eth2spec.test.helpers.keys import pubkeys
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def build_mock_validator(spec, i: int, balance: int):
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pubkey = pubkeys[i]
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# insecurely use pubkey as withdrawal key as well
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withdrawal_credentials = spec.BLS_WITHDRAWAL_PREFIX + spec.hash(pubkey)[1:]
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return spec.Validator(
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pubkey=pubkeys[i],
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withdrawal_credentials=withdrawal_credentials,
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activation_eligibility_epoch=spec.FAR_FUTURE_EPOCH,
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activation_epoch=spec.FAR_FUTURE_EPOCH,
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exit_epoch=spec.FAR_FUTURE_EPOCH,
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withdrawable_epoch=spec.FAR_FUTURE_EPOCH,
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effective_balance=min(balance - balance % spec.EFFECTIVE_BALANCE_INCREMENT, spec.MAX_EFFECTIVE_BALANCE)
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)
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def create_genesis_state(spec, validator_balances, activation_threshold):
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deposit_root = b'\x42' * 32
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eth1_block_hash = b'\xda' * 32
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state = spec.BeaconState(
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genesis_time=0,
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eth1_deposit_index=len(validator_balances),
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eth1_data=spec.Eth1Data(
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deposit_root=deposit_root,
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deposit_count=len(validator_balances),
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block_hash=eth1_block_hash,
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),
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latest_block_header=spec.BeaconBlockHeader(body_root=spec.hash_tree_root(spec.BeaconBlockBody())),
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randao_mixes=[eth1_block_hash] * spec.EPOCHS_PER_HISTORICAL_VECTOR,
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)
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# We "hack" in the initial validators,
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# as it is much faster than creating and processing genesis deposits for every single test case.
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state.balances = copy.deepcopy(validator_balances)
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state.validators = [build_mock_validator(spec, i, state.balances[i]) for i in range(len(validator_balances))]
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# Process genesis activations
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for validator in state.validators:
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if validator.effective_balance >= activation_threshold:
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validator.activation_eligibility_epoch = spec.GENESIS_EPOCH
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validator.activation_epoch = spec.GENESIS_EPOCH
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return state
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