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
37 lines
1 KiB
Go
37 lines
1 KiB
Go
// Package ethtest provides utility functions for use in testing
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// Ethereum-related functionality.
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package ethtest
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import (
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/params"
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"github.com/stretchr/testify/require"
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)
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// NewZeroEVM returns a new EVM backed by a [rawdb.NewMemoryDatabase]; all other
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// arguments to [vm.NewEVM] are the zero values of their respective types,
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// except for the use of [core.CanTransfer] and [core.Transfer] instead of nil
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// functions.
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func NewZeroEVM(tb testing.TB) (*state.StateDB, *vm.EVM) {
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tb.Helper()
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sdb, err := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
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require.NoError(tb, err, "state.New()")
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return sdb, vm.NewEVM(
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vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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},
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vm.TxContext{},
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sdb,
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¶ms.ChainConfig{},
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vm.Config{},
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)
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}
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