func (test *BlockTest) ValidateImportedHeaders(cm *core.BlockChain, validBlocks []btBlock) error {
// to get constant lookup when verifying block headers by hash (some tests have many blocks)
bmap := make(map[string]btBlock, len(test.Json.Blocks))
for _, b := range validBlocks {
bmap[b.BlockHeader.Hash] = b
}
// iterate over blocks backwards from HEAD and validate imported
// headers vs test file. some tests have reorgs, and we import
// block-by-block, so we can only validate imported headers after
// all blocks have been processed by ChainManager, as they may not
// be part of the longest chain until last block is imported.
for b := cm.CurrentBlock(); b != nil && b.NumberU64() != 0; b = cm.GetBlock(b.Header().ParentHash) {
bHash := common.Bytes2Hex(b.Hash().Bytes()) // hex without 0x prefix
if err := validateHeader(bmap[bHash].BlockHeader, b.Header()); err != nil {
return fmt.Errorf("Imported block header validation failed: %v", err)
}
}
return nil
}
