package core import ( "math/big" "testing" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/pow/ezp" ) func proc() (*BlockProcessor, *ChainManager) { db, _ := ethdb.NewMemDatabase() var mux event.TypeMux chainMan := NewChainManager(db, db, &mux) return NewBlockProcessor(db, db, ezp.New(), nil, chainMan, &mux), chainMan } func TestNumber(t *testing.T) { bp, chain := proc() block1 := chain.NewBlock(nil) block1.Header().Number = big.NewInt(3) err := bp.ValidateHeader(block1.Header(), chain.Genesis().Header()) if err != BlockNumberErr { t.Errorf("expected block number error") } block1 = chain.NewBlock(nil) err = bp.ValidateHeader(block1.Header(), chain.Genesis().Header()) if err == BlockNumberErr { t.Errorf("didn't expect block number error") } }