150 lines
5.4 KiB
Nim
150 lines
5.4 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2021 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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# process_deposit (beaconstate.nim)
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# https://github.com/ethereum/eth2.0-specs/blob/v1.0.1/specs/phase0/beacon-chain.md#deposits
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# ---------------------------------------------------------------
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{.used.}
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import
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# Standard library
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std/math,
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# Specs
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../../beacon_chain/spec/[beaconstate, datatypes, crypto, presets],
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# Internals
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../../beacon_chain/ssz,
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../../beacon_chain/extras,
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# Mock helpers
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../mocking/[mock_deposits, mock_genesis],
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../testutil, ../helpers/math_helpers
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suite "[Unit - Spec - Block processing] Deposits " & preset():
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const NumValidators = uint64 5 * SLOTS_PER_EPOCH
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let genesisState = newClone(initGenesisState(NumValidators))
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doAssert genesisState.data.validators.lenu64 == NumValidators
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template valid_deposit(deposit_amount: uint64, name: string): untyped =
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test "Deposit " & name & " MAX_EFFECTIVE_BALANCE balance (" &
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$(MAX_EFFECTIVE_BALANCE div 10'u64^9) & " ETH)":
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var state = assignClone(genesisState[])
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# Test configuration
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# ----------------------------------------
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let validator_index = state.data.validators.len
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let deposit = mockUpdateStateForNewDeposit(
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state.data,
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uint64 validator_index,
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deposit_amount,
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flags = {}
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)
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# Params for sanity checks
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# ----------------------------------------
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let pre_val_count = state.data.validators.len
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let pre_balance = if validator_index < pre_val_count:
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state.data.balances[validator_index]
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else:
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0
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# State transition
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# ----------------------------------------
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check: process_deposit(defaultRuntimePreset(), state.data, deposit, {}).isOk
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# Check invariants
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# ----------------------------------------
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check:
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state.data.validators.len == pre_val_count + 1
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state.data.balances.len == pre_val_count + 1
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state.data.balances[validator_index] == pre_balance + deposit.data.amount
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state.data.validators[validator_index].effective_balance ==
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round_multiple_down(
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min(MAX_EFFECTIVE_BALANCE, state.data.balances[validator_index]),
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EFFECTIVE_BALANCE_INCREMENT
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)
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valid_deposit(MAX_EFFECTIVE_BALANCE - 1, "under")
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valid_deposit(MAX_EFFECTIVE_BALANCE, "at")
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valid_deposit(MAX_EFFECTIVE_BALANCE + 1, "over")
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test "Validator top-up":
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var state = assignClone(genesisState[])
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# Test configuration
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# ----------------------------------------
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let validator_index = 0
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let deposit_amount = MAX_EFFECTIVE_BALANCE div 4
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let deposit = mockUpdateStateForNewDeposit(
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state.data,
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uint64 validator_index,
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deposit_amount,
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flags = {}
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)
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# Params for sanity checks
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# ----------------------------------------
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let pre_val_count = state.data.validators.len
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let pre_balance = if validator_index < pre_val_count:
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state.data.balances[validator_index]
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else:
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0
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# State transition
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# ----------------------------------------
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check: process_deposit(defaultRuntimePreset(), state.data, deposit, {}).isOk
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# Check invariants
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# ----------------------------------------
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check:
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state.data.validators.len == pre_val_count
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state.data.balances.len == pre_val_count
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state.data.balances[validator_index] == pre_balance + deposit.data.amount
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state.data.validators[validator_index].effective_balance ==
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round_multiple_down(
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min(MAX_EFFECTIVE_BALANCE, state.data.balances[validator_index]),
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EFFECTIVE_BALANCE_INCREMENT
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)
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template invalid_signature(deposit_amount: uint64, name: string): untyped =
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test "Invalid deposit " & name & " MAX_EFFECTIVE_BALANCE balance (" &
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$(MAX_EFFECTIVE_BALANCE div 10'u64^9) & " ETH)":
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var state = assignClone(genesisState[])
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# Test configuration
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# ----------------------------------------
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let validator_index = state.data.validators.len
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var deposit = mockUpdateStateForNewDeposit(
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state.data,
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uint64 validator_index,
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deposit_amount,
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flags = {skipBlsValidation}
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)
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# Params for sanity checks
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# ----------------------------------------
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let pre_val_count = state.data.validators.len
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# State transition
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# ----------------------------------------
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check:
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process_deposit(defaultRuntimePreset(), state.data, deposit, {}).isOk
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# Check invariants
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# ----------------------------------------
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check:
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state.data.validators.len == pre_val_count
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state.data.balances.len == pre_val_count
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invalid_signature(MAX_EFFECTIVE_BALANCE, "at")
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# TODO, tests with:
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# - invalid withdrawal credential
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# - invalid deposit root
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# - invalid merkle proof
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