14e2e488fd
* Fork tests (equal and larger chains) * `chain.link` fields are now exported * moved debug function from state to dump.go
117 lines
2.3 KiB
Go
117 lines
2.3 KiB
Go
package chain
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import (
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"fmt"
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"math/big"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/chain/types"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/ethutil"
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"github.com/ethereum/go-ethereum/state"
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)
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var TD *big.Int
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func init() {
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ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
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ethutil.Config.Db, _ = ethdb.NewMemDatabase()
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}
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type fakeproc struct {
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}
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func (self fakeproc) ProcessWithParent(a, b *types.Block) (*big.Int, state.Messages, error) {
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TD = new(big.Int).Add(TD, big.NewInt(1))
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return TD, nil, nil
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}
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func makechain(cman *ChainManager, max int) *BlockChain {
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blocks := make(types.Blocks, max)
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for i := 0; i < max; i++ {
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addr := ethutil.LeftPadBytes([]byte{byte(i)}, 20)
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block := cman.NewBlock(addr)
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if i != 0 {
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cman.CurrentBlock = blocks[i-1]
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}
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blocks[i] = block
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}
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return NewChain(blocks)
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}
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func TestLongerFork(t *testing.T) {
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cman := NewChainManager()
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cman.SetProcessor(fakeproc{})
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TD = big.NewInt(1)
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chainA := makechain(cman, 5)
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TD = big.NewInt(1)
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chainB := makechain(cman, 10)
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td, err := cman.TestChain(chainA)
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if err != nil {
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t.Error("unable to create new TD from chainA:", err)
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}
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cman.TD = td
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_, err = cman.TestChain(chainB)
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if err != nil {
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t.Error("expected chainB not to give errors:", err)
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}
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}
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func TestEqualFork(t *testing.T) {
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cman := NewChainManager()
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cman.SetProcessor(fakeproc{})
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TD = big.NewInt(1)
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chainA := makechain(cman, 5)
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TD = big.NewInt(2)
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chainB := makechain(cman, 5)
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td, err := cman.TestChain(chainA)
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if err != nil {
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t.Error("unable to create new TD from chainA:", err)
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}
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cman.TD = td
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_, err = cman.TestChain(chainB)
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if err != nil {
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t.Error("expected chainB not to give errors:", err)
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}
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}
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func TestBrokenChain(t *testing.T) {
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cman := NewChainManager()
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cman.SetProcessor(fakeproc{})
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TD = big.NewInt(1)
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chain := makechain(cman, 5)
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chain.Remove(chain.Front())
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_, err := cman.TestChain(chain)
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if err == nil {
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t.Error("expected broken chain to return error")
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}
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}
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func BenchmarkChainTesting(b *testing.B) {
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const chainlen = 1000
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ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
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ethutil.Config.Db, _ = ethdb.NewMemDatabase()
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cman := NewChainManager()
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cman.SetProcessor(fakeproc{})
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TD = big.NewInt(1)
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chain := makechain(cman, chainlen)
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stime := time.Now()
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cman.TestChain(chain)
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fmt.Println(chainlen, "took", time.Since(stime))
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}
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