# beacon_chain # Copyright (c) 2018-2020 Status Research & Development GmbH # Licensed and distributed under either of # * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT). # * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0). # at your option. This file may not be copied, modified, or distributed except according to those terms. {.used.} import options, sequtils, unittest, ./testutil, ./helpers/math_helpers, ./mocking/mock_deposits, ../beacon_chain/spec/[beaconstate, datatypes, digest, helpers, state_transition, presets], ../beacon_chain/[beacon_node_types, ssz, statediff], ../beacon_chain/block_pools/[chain_dag, quarantine, clearance] when isMainModule: import chronicles # or some random compile error happens... proc valid_deposit(state: var BeaconState) = # TODO copy/pasted from foo; refactor const deposit_amount = MAX_EFFECTIVE_BALANCE let validator_index = state.validators.len let deposit = mockUpdateStateForNewDeposit( state, uint64 validator_index, deposit_amount, flags = {} ) let pre_val_count = state.validators.len let pre_balance = if validator_index < pre_val_count: state.balances[validator_index] else: 0 check: process_deposit(defaultRuntimePreset(), state, deposit, {}).isOk state.validators.len == pre_val_count + 1 state.balances.len == pre_val_count + 1 state.balances[validator_index] == pre_balance + deposit.data.amount state.validators[validator_index].effective_balance == round_multiple_down( min(MAX_EFFECTIVE_BALANCE, state.balances[validator_index]), EFFECTIVE_BALANCE_INCREMENT ) proc getTestStates(initialState: HashedBeaconState): seq[ref HashedBeaconState] = # Randomly generated slot numbers, with a jump to around # SLOTS_PER_HISTORICAL_ROOT to force wraparound of those # slot-based mod/increment fields. const stateEpochs = [ 0, 1, # Around minimal wraparound SLOTS_PER_HISTORICAL_ROOT wraparound 5, 6, 7, 8, 9, 39, 40, 97, 98, 99, 113, 114, 115, 116, 130, 131, 145, 146, 192, 193, 232, 233, 237, 238, # Approaching and passing SLOTS_PER_HISTORICAL_ROOT wraparound 254, 255, 256, 257, 258] var tmpState = assignClone(initialState) cache = StateCache() for i, epoch in stateEpochs: let slot = epoch.Epoch.compute_start_slot_at_epoch if tmpState.data.slot < slot: doAssert process_slots(tmpState[], slot, cache) if i mod 3 == 0: valid_deposit(tmpState.data) doAssert tmpState.data.slot == slot result.add assignClone(tmpState[]) template wrappedTimedTest(name: string, body: untyped) = # `check` macro takes a copy of whatever it's checking, on the stack! # This leads to stack overflow # We can mitigate that by wrapping checks in proc block: # Symbol namespacing proc wrappedTest() = timedTest name: body wrappedTest() suiteReport "state diff tests" & preset(): setup: var db = makeTestDB(SLOTS_PER_EPOCH) dag = init(ChainDAGRef, defaultRuntimePreset, db) wrappedTimedTest "random slot differences" & preset(): let testStates = getTestStates(dag.headState.data) for i in 0 ..< testStates.len: for j in (i+1) ..< testStates.len: doAssert testStates[i].data.slot < testStates[j].data.slot if testStates[i].data.slot + SLOTS_PER_EPOCH != testStates[j].data.slot: continue var tmpStateApplyBase = assignClone(testStates[i].data) let diff = diffStates(testStates[i].data, testStates[j].data) # Immutable parts of validators stored separately, so aren't part of # the state diff. Synthesize required portion here for testing. applyDiff( tmpStateApplyBase[], mapIt(testStates[j].data.validators.asSeq[ testStates[i].data.validators.len .. testStates[j].data.validators.len - 1], it.getImmutableValidatorData), diff) check hash_tree_root(testStates[j].data) == hash_tree_root(tmpStateApplyBase[]) wrappedTimedTest "delta-encoding/decoding roundtrip sanity" & preset(): const balances0 = [ 18441870559'u64, 33446800397'u64, 11147100626'u64, 42603154274'u64, 35932339237'u64, 59867680015'u64, 19647051219'u64, 63570367156'u64, 43824455480'u64, 47579598334'u64, 22175553574'u64, 13601246675'u64, 40046565997'u64, 19862192832'u64, 14541260920'u64, 25776220537'u64, 53093805050'u64, 47082111792'u64, 24773067164'u64, 25673826779'u64, 45827636611'u64, 31759878136'u64, 58103054360'u64, 50512782241'u64, 31182839614'u64] balances1 = [ 42080447134'u64, 9723866886'u64, 21528919469'u64, 60580554318'u64, 37463193877'u64, 18143243334'u64, 32030042150'u64, 51881718936'u64, 17259308484'u64, 18169637307'u64, 48769712906'u64, 51088432822'u64, 52895655180'u64, 26116017983'u64, 39305430230'u64, 24222097345'u64, 39462882494'u64, 39596015040'u64, 37160795641'u64, 35339479924'u64, 33636108383'u64, 15242724015'u64, 60815628681'u64, 32706350007'u64, 8978429438'u64, 21322048864'u64, 22997808541'u64, 37068275007'u64, 50938101702'u64, 14620153832'u64, 55162721187'u64, 26298968647'u64, 17648055143'u64, 59996602297'u64, 30878159440'u64, 22415848926'u64, 20768842475'u64] balances2 = [ 21675589964'u64, 13993227022'u64, 26438767944'u64, 41440196317'u64, 41766461882'u64, 52661505859'u64, 42126387709'u64, 54445893868'u64, 41509802863'u64, 36976355380'u64, 46813612650'u64, 41196532827'u64, 23300952618'u64, 39031444988'u64, 37599530900'u64, 51850708563'u64, 42648477675'u64, 48123583384'u64, 17001259539'u64, 41801119284'u64, 44028789526'u64, 18179258736'u64, 50904978474'u64, 61199002779'u64, 24333838181'u64, 39569287366'u64, 37714257632'u64, 27622624307'u64, 63524818041'u64, 9470549646'u64, 41890932546'u64, 35929754455'u64, 18073815159'u64, 61164677670'u64, 46599755663'u64, 39969979788'u64, 19044350776'u64, 54818254044'u64, 48961544925'u64, 32004978192'u64, 26380608851'u64, 31055862486'u64, 16774301884'u64, 34387075525'u64, 30929489373'u64, 59224634642'u64, 39883929054'u64, 46052767920'u64, 53119984525'u64] balances_empty: array[0, uint64] = [] balances_single = [26971116287'u64] template test_roundtrip_balances(state_balances: untyped) = var balances = HashList[uint64, Limit VALIDATOR_REGISTRY_LIMIT]() for balance in state_balances: balances.add balance check deltaDecodeBalances[uint64, Limit VALIDATOR_REGISTRY_LIMIT]( deltaEncodeBalances[uint64, Limit VALIDATOR_REGISTRY_LIMIT]( balances)) == balances test_roundtrip_balances(balances_empty) test_roundtrip_balances(balances_single) test_roundtrip_balances(balances0) test_roundtrip_balances(balances1) test_roundtrip_balances(balances2)