eth-iterator-utils/internal/test_helper.go

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package internal
import (
"testing"
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"github.com/cerc-io/eth-testing/chains/premerge2"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/ethdb"
)
var (
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FixtureNodePaths = premerge2.Block1_StateNodePaths
FixtureLeafKeys = premerge2.Block1_StateNodeLeafKeys
)
func OpenFixtureTrie(t *testing.T, height uint64) (state.Trie, ethdb.Database) {
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data := premerge2.ChainData
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edb, err := rawdb.Open(rawdb.OpenOptions{
Directory: data.ChainData,
AncientsDirectory: data.Ancient,
Namespace: t.Name(),
Cache: 1024,
Handles: 256,
ReadOnly: true,
})
if err != nil {
t.Fatal(err)
}
hash := rawdb.ReadCanonicalHash(edb, height)
header := rawdb.ReadHeader(edb, hash, height)
if header == nil {
t.Fatalf("unable to read canonical header at height %d", height)
}
sdb := state.NewDatabase(edb)
tree, err := sdb.OpenTrie(header.Root)
if err != nil {
t.Fatal(err)
}
return tree, edb
}