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core/rawdb: remove dead code and restore useful test

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This commit is contained in:
Gary Rong 2025-11-14 21:32:48 +08:00
parent 43b6c60f28
commit f7a5318fbb
2 changed files with 29 additions and 27 deletions
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27
core/rawdb/accessors_chain.go
View file

@ -827,33 +827,6 @@ func WriteBadBlock(db ethdb.KeyValueStore, block *types.Block) {
}
}
// FindCommonAncestor returns the last common ancestor of two block headers
func FindCommonAncestor(db ethdb.Reader, a, b *types.Header) *types.Header {
for bn := b.Number.Uint64(); a.Number.Uint64() > bn; {
a = ReadHeader(db, a.ParentHash, a.Number.Uint64()-1)
if a == nil {
return nil
}
}
for an := a.Number.Uint64(); an < b.Number.Uint64(); {
b = ReadHeader(db, b.ParentHash, b.Number.Uint64()-1)
if b == nil {
return nil
}
}
for a.Hash() != b.Hash() {
a = ReadHeader(db, a.ParentHash, a.Number.Uint64()-1)
if a == nil {
return nil
}
b = ReadHeader(db, b.ParentHash, b.Number.Uint64()-1)
if b == nil {
return nil
}
}
return a
}
// ReadHeadHeader returns the current canonical head header.
func ReadHeadHeader(db ethdb.Reader) *types.Header {
headHeaderHash := ReadHeadHeaderHash(db)

29
core/rawdb/accessors_chain_test.go
View file

@ -508,6 +508,35 @@ func TestWriteAncientHeaderChain(t *testing.T) {
}
}
func TestHashesInRange(t *testing.T) {
mkHeader := func(number, seq int) *types.Header {
h := types.Header{
Difficulty: new(big.Int),
Number: big.NewInt(int64(number)),
GasLimit: uint64(seq),
}
return &h
}
db := NewMemoryDatabase()
// For each number, write N versions of that particular number
total := 0
for i := 0; i < 15; i++ {
for ii := 0; ii < i; ii++ {
WriteHeader(db, mkHeader(i, ii))
total++
}
}
if have, want := len(ReadAllHashes(db, 10)), 10; have != want {
t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have)
}
if have, want := len(ReadAllHashes(db, 16)), 0; have != want {
t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have)
}
if have, want := len(ReadAllHashes(db, 1)), 1; have != want {
t.Fatalf("Wrong number of hashes read, want %d, got %d", want, have)
}
}
// This measures the write speed of the WriteAncientBlocks operation.
func BenchmarkWriteAncientBlocks(b *testing.B) {
// Open freezer database.