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package test
import (
"testing"
"github.com/ethereum-optimism/optimism/op-service/eth"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
)
// Same as l2.StateOracle but need to use our own copy to avoid dependency loops
type stateOracle interface {
NodeByHash(nodeHash common.Hash) []byte
CodeByHash(codeHash common.Hash) []byte
}
type StubBlockOracle struct {
t *testing.T
Blocks map[common.Hash]*types.Block
Outputs map[common.Hash]eth.Output
stateOracle
}
func NewStubOracle(t *testing.T) (*StubBlockOracle, *StubStateOracle) {
stateOracle := NewStubStateOracle(t)
blockOracle := StubBlockOracle{
t: t,
Blocks: make(map[common.Hash]*types.Block),
Outputs: make(map[common.Hash]eth.Output),
stateOracle: stateOracle,
}
return &blockOracle, stateOracle
}
func NewStubOracleWithBlocks(t *testing.T, chain []*types.Block, outputs []eth.Output, db ethdb.Database) *StubBlockOracle {
blocks := make(map[common.Hash]*types.Block, len(chain))
for _, block := range chain {
blocks[block.Hash()] = block
}
o := make(map[common.Hash]eth.Output, len(outputs))
for _, output := range outputs {
o[common.Hash(eth.OutputRoot(output))] = output
}
return &StubBlockOracle{
t: t,
Blocks: blocks,
Outputs: o,
stateOracle: &KvStateOracle{t: t, Source: db},
}
}
func (o StubBlockOracle) BlockByHash(blockHash common.Hash) *types.Block {
block, ok := o.Blocks[blockHash]
if !ok {
o.t.Fatalf("requested unknown block %s", blockHash)
}
return block
}
func (o StubBlockOracle) OutputByRoot(root common.Hash) eth.Output {
output, ok := o.Outputs[root]
if !ok {
o.t.Fatalf("requested unknown output root %s", root)
}
return output
}
// KvStateOracle loads data from a source ethdb.KeyValueStore
type KvStateOracle struct {
t *testing.T
Source ethdb.KeyValueStore
}
func NewKvStateOracle(t *testing.T, db ethdb.KeyValueStore) *KvStateOracle {
return &KvStateOracle{
t: t,
Source: db,
}
}
func (o *KvStateOracle) NodeByHash(nodeHash common.Hash) []byte {
val, err := o.Source.Get(nodeHash.Bytes())
if err != nil {
o.t.Fatalf("error retrieving node %v: %v", nodeHash, err)
}
return val
}
func (o *KvStateOracle) CodeByHash(hash common.Hash) []byte {
return rawdb.ReadCode(o.Source, hash)
}
func NewStubStateOracle(t *testing.T) *StubStateOracle {
return &StubStateOracle{
t: t,
Data: make(map[common.Hash][]byte),
Code: make(map[common.Hash][]byte),
}
}
// StubStateOracle is a StateOracle implementation that reads from simple maps
type StubStateOracle struct {
t *testing.T
Data map[common.Hash][]byte
Code map[common.Hash][]byte
}
func (o *StubStateOracle) NodeByHash(nodeHash common.Hash) []byte {
data, ok := o.Data[nodeHash]
if !ok {
o.t.Fatalf("no value for node %v", nodeHash)
}
return data
}
func (o *StubStateOracle) CodeByHash(hash common.Hash) []byte {
data, ok := o.Code[hash]
if !ok {
o.t.Fatalf("no value for code %v", hash)
}
return data
}