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tests: validate snapshot after test

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This commit is contained in:
Martin Holst Swende 2020-03-18 09:40:01 +01:00
parent 1236fce689
commit 239887e8b8
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2 changed files with 23 additions and 0 deletions
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9
core/blockchain.go
View file

@ -520,6 +520,15 @@ func (bc *BlockChain) CurrentBlock() *types.Block {
return bc.currentBlock.Load().(*types.Block)
}
// Snapshot returns the blockchain snapshot tree. This method is mainly used for
// testing, to make it possible to verify the snapshot after execution.
//
// Warning: There are no guarantees about the safety of using the returned 'snap' if the
// blockchain is simultaneously importing blocks, so take care.
func (bc *BlockChain) Snapshot() *snapshot.Tree {
return bc.snaps
}
// CurrentFastBlock retrieves the current fast-sync head block of the canonical
// chain. The block is retrieved from the blockchain's internal cache.
func (bc *BlockChain) CurrentFastBlock() *types.Block {

14
tests/block_test_util.go
View file

@ -32,6 +32,7 @@ import (
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/state/snapshot"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/params"
@ -144,6 +145,19 @@ func (t *BlockTest) Run(snapshotter bool) error {
if err = t.validatePostState(newDB); err != nil {
return fmt.Errorf("post state validation failed: %v", err)
}
// Cross-check the snapshot-to-hash against the trie hash
if snapshotter {
snapTree := chain.Snapshot()
root := chain.CurrentBlock().Root()
it, err := snapTree.AccountIterator(root, common.Hash{})
if err != nil {
return fmt.Errorf("Could not create iterator for root %x: %v", root, err)
}
generatedRoot := snapshot.GenerateTrieRoot(it)
if generatedRoot != root {
return fmt.Errorf("Snapshot corruption, got %d exp %d", generatedRoot, root)
}
}
return t.validateImportedHeaders(chain, validBlocks)
}