forked from ethereum/go-ethereum
/
consensus_test.go
137 lines (124 loc) · 3.57 KB
/
consensus_test.go
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package beacon
import (
"fmt"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/params"
)
type mockChain struct {
config *params.ChainConfig
tds map[uint64]*big.Int
}
func newMockChain() *mockChain {
return &mockChain{
config: new(params.ChainConfig),
tds: make(map[uint64]*big.Int),
}
}
func (m *mockChain) Config() *params.ChainConfig {
return m.config
}
func (m *mockChain) CurrentHeader() *types.Header { panic("not implemented") }
func (m *mockChain) GetHeader(hash common.Hash, number uint64) *types.Header {
panic("not implemented")
}
func (m *mockChain) GetHeaderByNumber(number uint64) *types.Header { panic("not implemented") }
func (m *mockChain) GetHeaderByHash(hash common.Hash) *types.Header { panic("not implemented") }
func (m *mockChain) GetTd(hash common.Hash, number uint64) *big.Int {
num, ok := m.tds[number]
if ok {
return new(big.Int).Set(num)
}
return nil
}
func TestVerifyTerminalBlock(t *testing.T) {
chain := newMockChain()
chain.tds[0] = big.NewInt(10)
chain.config.TerminalTotalDifficulty = big.NewInt(50)
tests := []struct {
preHeaders []*types.Header
ttd *big.Int
err error
index int
}{
// valid ttd
{
preHeaders: []*types.Header{
{Number: big.NewInt(1), Difficulty: big.NewInt(10)},
{Number: big.NewInt(2), Difficulty: big.NewInt(10)},
{Number: big.NewInt(3), Difficulty: big.NewInt(10)},
{Number: big.NewInt(4), Difficulty: big.NewInt(10)},
},
ttd: big.NewInt(50),
},
// last block doesn't reach ttd
{
preHeaders: []*types.Header{
{Number: big.NewInt(1), Difficulty: big.NewInt(10)},
{Number: big.NewInt(2), Difficulty: big.NewInt(10)},
{Number: big.NewInt(3), Difficulty: big.NewInt(10)},
{Number: big.NewInt(4), Difficulty: big.NewInt(9)},
},
ttd: big.NewInt(50),
err: consensus.ErrInvalidTerminalBlock,
index: 3,
},
// two blocks reach ttd
{
preHeaders: []*types.Header{
{Number: big.NewInt(1), Difficulty: big.NewInt(10)},
{Number: big.NewInt(2), Difficulty: big.NewInt(10)},
{Number: big.NewInt(3), Difficulty: big.NewInt(20)},
{Number: big.NewInt(4), Difficulty: big.NewInt(10)},
},
ttd: big.NewInt(50),
err: consensus.ErrInvalidTerminalBlock,
index: 3,
},
// three blocks reach ttd
{
preHeaders: []*types.Header{
{Number: big.NewInt(1), Difficulty: big.NewInt(10)},
{Number: big.NewInt(2), Difficulty: big.NewInt(10)},
{Number: big.NewInt(3), Difficulty: big.NewInt(20)},
{Number: big.NewInt(4), Difficulty: big.NewInt(10)},
{Number: big.NewInt(4), Difficulty: big.NewInt(10)},
},
ttd: big.NewInt(50),
err: consensus.ErrInvalidTerminalBlock,
index: 3,
},
// parent reached ttd
{
preHeaders: []*types.Header{
{Number: big.NewInt(1), Difficulty: big.NewInt(10)},
},
ttd: big.NewInt(9),
err: consensus.ErrInvalidTerminalBlock,
index: 0,
},
// unknown parent
{
preHeaders: []*types.Header{
{Number: big.NewInt(4), Difficulty: big.NewInt(10)},
},
ttd: big.NewInt(9),
err: consensus.ErrUnknownAncestor,
index: 0,
},
}
for i, test := range tests {
fmt.Printf("Test: %v\n", i)
chain.config.TerminalTotalDifficulty = test.ttd
index, err := verifyTerminalPoWBlock(chain, test.preHeaders)
if err != test.err {
t.Fatalf("Invalid error encountered, expected %v got %v", test.err, err)
}
if index != test.index {
t.Fatalf("Invalid index, expected %v got %v", test.index, index)
}
}
}