mirror of
https://github.com/ethereum/go-ethereum.git
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5429fd87c8
* feat: pseudo-generic extra payloads in `params.ChainConfig` and `params.Rules` * feat: `params.ExtraPayloadGetter` for end-user type safety * refactor: payloads only available through `params.ExtraPayloadGetter` * chore: make `libevm/examples/extraparams` a `params` testable example * doc: `libevm/pseudo` package comments and improved readability * doc: `params.*Extra*` comments and improved readability * doc: `params.ExtraPayloadGetter` comments and improved readability * doc: `params/config.libevm_test.go` comments and improved readability * refactor: simplify `params.ChainConfig.UnmarshalJSON()` * refactor: abstract new/nil-pointer creation into `pseudo.Constructor`s * feat: precompile override via `params.Extras` hooks * doc: flesh out `PrecompileOverride()` in example * doc: complete commentary and improve readability * refactor: `ChainConfig.Hooks()` + `Rules` equivalent * chore: rename precompiles test file in keeping with geth equivalent * feat: stateful precompiles + allowlist hooks The allowlist hooks are included in this commit because they allow for the same functionality as stateful precompiles in `ava-labs/coreth` and `ava-labs/subnet-evm`. * fix: `StateTransition.canExecuteTransaction()` used `msg.From` instead of `To` * test: `params.RulesHooks.CanCreateContract` integration * test: `params.RulesHooks.CanExecuteTransaction` integration * test: `vm.NewStatefulPrecompile()` integration * refactor: simplify test of `CanCreateContract` * refactor: abstract generation of random `Address`/`Hash` values * doc: full documentation + readability refactoring/renaming * fix: remove circular dependency in tests
60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
// Package hookstest provides test doubles for testing subsets of libevm hooks.
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package hookstest
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import (
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/libevm"
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"github.com/ethereum/go-ethereum/params"
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)
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// A Stub is a test double for [params.ChainConfigHooks] and
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// [params.RulesHooks]. Each of the fields, if non-nil, back their respective
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// hook methods, which otherwise fall back to the default behaviour.
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type Stub struct {
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PrecompileOverrides map[common.Address]libevm.PrecompiledContract
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CanExecuteTransactionFn func(common.Address, *common.Address, libevm.StateReader) error
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CanCreateContractFn func(*libevm.AddressContext, libevm.StateReader) error
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}
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// RegisterForRules clears any registered [params.Extras] and then registers s
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// as [params.RulesHooks], which are themselves cleared by the
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// [testing.TB.Cleanup] routine.
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func (s *Stub) RegisterForRules(tb testing.TB) {
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params.TestOnlyClearRegisteredExtras()
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params.RegisterExtras(params.Extras[params.NOOPHooks, Stub]{
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NewRules: func(_ *params.ChainConfig, _ *params.Rules, _ *params.NOOPHooks, blockNum *big.Int, isMerge bool, timestamp uint64) *Stub {
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return s
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},
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})
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tb.Cleanup(params.TestOnlyClearRegisteredExtras)
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}
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func (s Stub) PrecompileOverride(a common.Address) (libevm.PrecompiledContract, bool) {
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if len(s.PrecompileOverrides) == 0 {
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return nil, false
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}
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p, ok := s.PrecompileOverrides[a]
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return p, ok
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}
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func (s Stub) CanExecuteTransaction(from common.Address, to *common.Address, sr libevm.StateReader) error {
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if f := s.CanExecuteTransactionFn; f != nil {
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return f(from, to, sr)
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}
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return nil
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}
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func (s Stub) CanCreateContract(cc *libevm.AddressContext, sr libevm.StateReader) error {
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if f := s.CanCreateContractFn; f != nil {
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return f(cc, sr)
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}
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return nil
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}
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var _ interface {
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params.ChainConfigHooks
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params.RulesHooks
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} = Stub{}
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