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- // Copyright 2020 The go-ethereum Authors
- // This file is part of the go-ethereum library.
- //
- // The go-ethereum library is free software: you can redistribute it and/or modify
- // it under the terms of the GNU Lesser General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // The go-ethereum library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public License
- // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
- // Tests that abnormal program termination (i.e.crash) and restart can recovery
- // the snapshot properly if the snapshot is enabled.
- package core
- import (
- "bytes"
- "fmt"
- "io/ioutil"
- "os"
- "strings"
- "testing"
- "time"
- "github.com/ethereum/go-ethereum/consensus"
- "github.com/ethereum/go-ethereum/consensus/ethash"
- "github.com/ethereum/go-ethereum/core/rawdb"
- "github.com/ethereum/go-ethereum/core/types"
- "github.com/ethereum/go-ethereum/core/vm"
- "github.com/ethereum/go-ethereum/ethdb"
- "github.com/ethereum/go-ethereum/params"
- )
- // snapshotTestBasic wraps the common testing fields in the snapshot tests.
- type snapshotTestBasic struct {
- chainBlocks int // Number of blocks to generate for the canonical chain
- snapshotBlock uint64 // Block number of the relevant snapshot disk layer
- commitBlock uint64 // Block number for which to commit the state to disk
- expCanonicalBlocks int // Number of canonical blocks expected to remain in the database (excl. genesis)
- expHeadHeader uint64 // Block number of the expected head header
- expHeadFastBlock uint64 // Block number of the expected head fast sync block
- expHeadBlock uint64 // Block number of the expected head full block
- expSnapshotBottom uint64 // The block height corresponding to the snapshot disk layer
- // share fields, set in runtime
- datadir string
- db ethdb.Database
- gendb ethdb.Database
- engine consensus.Engine
- }
- func (basic *snapshotTestBasic) prepare(t *testing.T) (*BlockChain, []*types.Block) {
- // Create a temporary persistent database
- datadir, err := ioutil.TempDir("", "")
- if err != nil {
- t.Fatalf("Failed to create temporary datadir: %v", err)
- }
- os.RemoveAll(datadir)
- db, err := rawdb.NewLevelDBDatabaseWithFreezer(datadir, 0, 0, datadir, "", false)
- if err != nil {
- t.Fatalf("Failed to create persistent database: %v", err)
- }
- // Initialize a fresh chain
- var (
- genesis = new(Genesis).MustCommit(db)
- engine = ethash.NewFullFaker()
- gendb = rawdb.NewMemoryDatabase()
- // Snapshot is enabled, the first snapshot is created from the Genesis.
- // The snapshot memory allowance is 256MB, it means no snapshot flush
- // will happen during the block insertion.
- cacheConfig = defaultCacheConfig
- )
- chain, err := NewBlockChain(db, cacheConfig, params.AllEthashProtocolChanges, engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to create chain: %v", err)
- }
- blocks, _ := GenerateChain(params.TestChainConfig, genesis, engine, gendb, basic.chainBlocks, func(i int, b *BlockGen) {})
- // Insert the blocks with configured settings.
- var breakpoints []uint64
- if basic.commitBlock > basic.snapshotBlock {
- breakpoints = append(breakpoints, basic.snapshotBlock, basic.commitBlock)
- } else {
- breakpoints = append(breakpoints, basic.commitBlock, basic.snapshotBlock)
- }
- var startPoint uint64
- for _, point := range breakpoints {
- if _, err := chain.InsertChain(blocks[startPoint:point]); err != nil {
- t.Fatalf("Failed to import canonical chain start: %v", err)
- }
- startPoint = point
- if basic.commitBlock > 0 && basic.commitBlock == point {
- chain.stateCache.TrieDB().Commit(blocks[point-1].Root(), true, nil)
- }
- if basic.snapshotBlock > 0 && basic.snapshotBlock == point {
- // Flushing the entire snap tree into the disk, the
- // relavant (a) snapshot root and (b) snapshot generator
- // will be persisted atomically.
- chain.snaps.Cap(blocks[point-1].Root(), 0)
- diskRoot, blockRoot := chain.snaps.DiskRoot(), blocks[point-1].Root()
- if !bytes.Equal(diskRoot.Bytes(), blockRoot.Bytes()) {
- t.Fatalf("Failed to flush disk layer change, want %x, got %x", blockRoot, diskRoot)
- }
- }
- }
- if _, err := chain.InsertChain(blocks[startPoint:]); err != nil {
- t.Fatalf("Failed to import canonical chain tail: %v", err)
- }
- // Set runtime fields
- basic.datadir = datadir
- basic.db = db
- basic.gendb = gendb
- basic.engine = engine
- return chain, blocks
- }
- func (basic *snapshotTestBasic) verify(t *testing.T, chain *BlockChain, blocks []*types.Block) {
- // Iterate over all the remaining blocks and ensure there are no gaps
- verifyNoGaps(t, chain, true, blocks)
- verifyCutoff(t, chain, true, blocks, basic.expCanonicalBlocks)
- if head := chain.CurrentHeader(); head.Number.Uint64() != basic.expHeadHeader {
- t.Errorf("Head header mismatch: have %d, want %d", head.Number, basic.expHeadHeader)
- }
- if head := chain.CurrentFastBlock(); head.NumberU64() != basic.expHeadFastBlock {
- t.Errorf("Head fast block mismatch: have %d, want %d", head.NumberU64(), basic.expHeadFastBlock)
- }
- if head := chain.CurrentBlock(); head.NumberU64() != basic.expHeadBlock {
- t.Errorf("Head block mismatch: have %d, want %d", head.NumberU64(), basic.expHeadBlock)
- }
- // Check the disk layer, ensure they are matched
- block := chain.GetBlockByNumber(basic.expSnapshotBottom)
- if block == nil {
- t.Errorf("The correspnding block[%d] of snapshot disk layer is missing", basic.expSnapshotBottom)
- } else if !bytes.Equal(chain.snaps.DiskRoot().Bytes(), block.Root().Bytes()) {
- t.Errorf("The snapshot disk layer root is incorrect, want %x, get %x", block.Root(), chain.snaps.DiskRoot())
- }
- // Check the snapshot, ensure it's integrated
- if err := chain.snaps.Verify(block.Root()); err != nil {
- t.Errorf("The disk layer is not integrated %v", err)
- }
- }
- func (basic *snapshotTestBasic) dump() string {
- buffer := new(strings.Builder)
- fmt.Fprint(buffer, "Chain:\n G")
- for i := 0; i < basic.chainBlocks; i++ {
- fmt.Fprintf(buffer, "->C%d", i+1)
- }
- fmt.Fprint(buffer, " (HEAD)\n\n")
- fmt.Fprintf(buffer, "Commit: G")
- if basic.commitBlock > 0 {
- fmt.Fprintf(buffer, ", C%d", basic.commitBlock)
- }
- fmt.Fprint(buffer, "\n")
- fmt.Fprintf(buffer, "Snapshot: G")
- if basic.snapshotBlock > 0 {
- fmt.Fprintf(buffer, ", C%d", basic.snapshotBlock)
- }
- fmt.Fprint(buffer, "\n")
- //if crash {
- // fmt.Fprintf(buffer, "\nCRASH\n\n")
- //} else {
- // fmt.Fprintf(buffer, "\nSetHead(%d)\n\n", basic.setHead)
- //}
- fmt.Fprintf(buffer, "------------------------------\n\n")
- fmt.Fprint(buffer, "Expected in leveldb:\n G")
- for i := 0; i < basic.expCanonicalBlocks; i++ {
- fmt.Fprintf(buffer, "->C%d", i+1)
- }
- fmt.Fprintf(buffer, "\n\n")
- fmt.Fprintf(buffer, "Expected head header : C%d\n", basic.expHeadHeader)
- fmt.Fprintf(buffer, "Expected head fast block: C%d\n", basic.expHeadFastBlock)
- if basic.expHeadBlock == 0 {
- fmt.Fprintf(buffer, "Expected head block : G\n")
- } else {
- fmt.Fprintf(buffer, "Expected head block : C%d\n", basic.expHeadBlock)
- }
- if basic.expSnapshotBottom == 0 {
- fmt.Fprintf(buffer, "Expected snapshot disk : G\n")
- } else {
- fmt.Fprintf(buffer, "Expected snapshot disk : C%d\n", basic.expSnapshotBottom)
- }
- return buffer.String()
- }
- func (basic *snapshotTestBasic) teardown() {
- basic.db.Close()
- basic.gendb.Close()
- os.RemoveAll(basic.datadir)
- }
- // snapshotTest is a test case type for normal snapshot recovery.
- // It can be used for testing that restart Geth normally.
- type snapshotTest struct {
- snapshotTestBasic
- }
- func (snaptest *snapshotTest) test(t *testing.T) {
- // It's hard to follow the test case, visualize the input
- // log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
- // fmt.Println(tt.dump())
- chain, blocks := snaptest.prepare(t)
- // Restart the chain normally
- chain.Stop()
- newchain, err := NewBlockChain(snaptest.db, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- defer newchain.Stop()
- snaptest.verify(t, newchain, blocks)
- }
- // crashSnapshotTest is a test case type for innormal snapshot recovery.
- // It can be used for testing that restart Geth after the crash.
- type crashSnapshotTest struct {
- snapshotTestBasic
- }
- func (snaptest *crashSnapshotTest) test(t *testing.T) {
- // It's hard to follow the test case, visualize the input
- // log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
- // fmt.Println(tt.dump())
- chain, blocks := snaptest.prepare(t)
- // Pull the plug on the database, simulating a hard crash
- db := chain.db
- db.Close()
- // Start a new blockchain back up and see where the repair leads us
- newdb, err := rawdb.NewLevelDBDatabaseWithFreezer(snaptest.datadir, 0, 0, snaptest.datadir, "", false)
- if err != nil {
- t.Fatalf("Failed to reopen persistent database: %v", err)
- }
- defer newdb.Close()
- // The interesting thing is: instead of starting the blockchain after
- // the crash, we do restart twice here: one after the crash and one
- // after the normal stop. It's used to ensure the broken snapshot
- // can be detected all the time.
- newchain, err := NewBlockChain(newdb, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- newchain.Stop()
- newchain, err = NewBlockChain(newdb, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- defer newchain.Stop()
- snaptest.verify(t, newchain, blocks)
- }
- // gappedSnapshotTest is a test type used to test this scenario:
- // - have a complete snapshot
- // - restart without enabling the snapshot
- // - insert a few blocks
- // - restart with enabling the snapshot again
- type gappedSnapshotTest struct {
- snapshotTestBasic
- gapped int // Number of blocks to insert without enabling snapshot
- }
- func (snaptest *gappedSnapshotTest) test(t *testing.T) {
- // It's hard to follow the test case, visualize the input
- // log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
- // fmt.Println(tt.dump())
- chain, blocks := snaptest.prepare(t)
- // Insert blocks without enabling snapshot if gapping is required.
- chain.Stop()
- gappedBlocks, _ := GenerateChain(params.TestChainConfig, blocks[len(blocks)-1], snaptest.engine, snaptest.gendb, snaptest.gapped, func(i int, b *BlockGen) {})
- // Insert a few more blocks without enabling snapshot
- var cacheConfig = &CacheConfig{
- TrieCleanLimit: 256,
- TrieDirtyLimit: 256,
- TrieTimeLimit: 5 * time.Minute,
- SnapshotLimit: 0,
- }
- newchain, err := NewBlockChain(snaptest.db, cacheConfig, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- newchain.InsertChain(gappedBlocks)
- newchain.Stop()
- // Restart the chain with enabling the snapshot
- newchain, err = NewBlockChain(snaptest.db, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- defer newchain.Stop()
- snaptest.verify(t, newchain, blocks)
- }
- // setHeadSnapshotTest is the test type used to test this scenario:
- // - have a complete snapshot
- // - set the head to a lower point
- // - restart
- type setHeadSnapshotTest struct {
- snapshotTestBasic
- setHead uint64 // Block number to set head back to
- }
- func (snaptest *setHeadSnapshotTest) test(t *testing.T) {
- // It's hard to follow the test case, visualize the input
- // log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
- // fmt.Println(tt.dump())
- chain, blocks := snaptest.prepare(t)
- // Rewind the chain if setHead operation is required.
- chain.SetHead(snaptest.setHead)
- chain.Stop()
- newchain, err := NewBlockChain(snaptest.db, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- defer newchain.Stop()
- snaptest.verify(t, newchain, blocks)
- }
- // restartCrashSnapshotTest is the test type used to test this scenario:
- // - have a complete snapshot
- // - restart chain
- // - insert more blocks with enabling the snapshot
- // - commit the snapshot
- // - crash
- // - restart again
- type restartCrashSnapshotTest struct {
- snapshotTestBasic
- newBlocks int
- }
- func (snaptest *restartCrashSnapshotTest) test(t *testing.T) {
- // It's hard to follow the test case, visualize the input
- // log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
- // fmt.Println(tt.dump())
- chain, blocks := snaptest.prepare(t)
- // Firstly, stop the chain properly, with all snapshot journal
- // and state committed.
- chain.Stop()
- newchain, err := NewBlockChain(snaptest.db, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- newBlocks, _ := GenerateChain(params.TestChainConfig, blocks[len(blocks)-1], snaptest.engine, snaptest.gendb, snaptest.newBlocks, func(i int, b *BlockGen) {})
- newchain.InsertChain(newBlocks)
- // Commit the entire snapshot into the disk if requested. Note only
- // (a) snapshot root and (b) snapshot generator will be committed,
- // the diff journal is not.
- newchain.Snapshots().Cap(newBlocks[len(newBlocks)-1].Root(), 0)
- // Simulate the blockchain crash
- // Don't call chain.Stop here, so that no snapshot
- // journal and latest state will be committed
- // Restart the chain after the crash
- newchain, err = NewBlockChain(snaptest.db, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- defer newchain.Stop()
- snaptest.verify(t, newchain, blocks)
- }
- // wipeCrashSnapshotTest is the test type used to test this scenario:
- // - have a complete snapshot
- // - restart, insert more blocks without enabling the snapshot
- // - restart again with enabling the snapshot
- // - crash
- type wipeCrashSnapshotTest struct {
- snapshotTestBasic
- newBlocks int
- }
- func (snaptest *wipeCrashSnapshotTest) test(t *testing.T) {
- // It's hard to follow the test case, visualize the input
- // log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
- // fmt.Println(tt.dump())
- chain, blocks := snaptest.prepare(t)
- // Firstly, stop the chain properly, with all snapshot journal
- // and state committed.
- chain.Stop()
- config := &CacheConfig{
- TrieCleanLimit: 256,
- TrieDirtyLimit: 256,
- TrieTimeLimit: 5 * time.Minute,
- SnapshotLimit: 0,
- }
- newchain, err := NewBlockChain(snaptest.db, config, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- newBlocks, _ := GenerateChain(params.TestChainConfig, blocks[len(blocks)-1], snaptest.engine, snaptest.gendb, snaptest.newBlocks, func(i int, b *BlockGen) {})
- newchain.InsertChain(newBlocks)
- newchain.Stop()
- // Restart the chain, the wiper should starts working
- config = &CacheConfig{
- TrieCleanLimit: 256,
- TrieDirtyLimit: 256,
- TrieTimeLimit: 5 * time.Minute,
- SnapshotLimit: 256,
- SnapshotWait: false, // Don't wait rebuild
- }
- newchain, err = NewBlockChain(snaptest.db, config, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- // Simulate the blockchain crash.
- newchain, err = NewBlockChain(snaptest.db, nil, params.AllEthashProtocolChanges, snaptest.engine, vm.Config{}, nil, nil, nil)
- if err != nil {
- t.Fatalf("Failed to recreate chain: %v", err)
- }
- snaptest.verify(t, newchain, blocks)
- }
- // Tests a Geth restart with valid snapshot. Before the shutdown, all snapshot
- // journal will be persisted correctly. In this case no snapshot recovery is
- // required.
- func TestRestartWithNewSnapshot(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G
- // Snapshot: G
- //
- // SetHead(0)
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4->C5->C6->C7->C8
- //
- // Expected head header : C8
- // Expected head fast block: C8
- // Expected head block : C8
- // Expected snapshot disk : G
- test := &snapshotTest{
- snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 0,
- commitBlock: 0,
- expCanonicalBlocks: 8,
- expHeadHeader: 8,
- expHeadFastBlock: 8,
- expHeadBlock: 8,
- expSnapshotBottom: 0, // Initial disk layer built from genesis
- },
- }
- test.test(t)
- test.teardown()
- }
- // Tests a Geth was crashed and restarts with a broken snapshot. In this case the
- // chain head should be rewound to the point with available state. And also the
- // new head should must be lower than disk layer. But there is no committed point
- // so the chain should be rewound to genesis and the disk layer should be left
- // for recovery.
- func TestNoCommitCrashWithNewSnapshot(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G
- // Snapshot: G, C4
- //
- // CRASH
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4->C5->C6->C7->C8
- //
- // Expected head header : C8
- // Expected head fast block: C8
- // Expected head block : G
- // Expected snapshot disk : C4
- test := &crashSnapshotTest{
- snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 4,
- commitBlock: 0,
- expCanonicalBlocks: 8,
- expHeadHeader: 8,
- expHeadFastBlock: 8,
- expHeadBlock: 0,
- expSnapshotBottom: 4, // Last committed disk layer, wait recovery
- },
- }
- test.test(t)
- test.teardown()
- }
- // Tests a Geth was crashed and restarts with a broken snapshot. In this case the
- // chain head should be rewound to the point with available state. And also the
- // new head should must be lower than disk layer. But there is only a low committed
- // point so the chain should be rewound to committed point and the disk layer
- // should be left for recovery.
- func TestLowCommitCrashWithNewSnapshot(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G, C2
- // Snapshot: G, C4
- //
- // CRASH
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4->C5->C6->C7->C8
- //
- // Expected head header : C8
- // Expected head fast block: C8
- // Expected head block : C2
- // Expected snapshot disk : C4
- test := &crashSnapshotTest{
- snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 4,
- commitBlock: 2,
- expCanonicalBlocks: 8,
- expHeadHeader: 8,
- expHeadFastBlock: 8,
- expHeadBlock: 2,
- expSnapshotBottom: 4, // Last committed disk layer, wait recovery
- },
- }
- test.test(t)
- test.teardown()
- }
- // Tests a Geth was crashed and restarts with a broken snapshot. In this case
- // the chain head should be rewound to the point with available state. And also
- // the new head should must be lower than disk layer. But there is only a high
- // committed point so the chain should be rewound to genesis and the disk layer
- // should be left for recovery.
- func TestHighCommitCrashWithNewSnapshot(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G, C6
- // Snapshot: G, C4
- //
- // CRASH
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4->C5->C6->C7->C8
- //
- // Expected head header : C8
- // Expected head fast block: C8
- // Expected head block : G
- // Expected snapshot disk : C4
- test := &crashSnapshotTest{
- snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 4,
- commitBlock: 6,
- expCanonicalBlocks: 8,
- expHeadHeader: 8,
- expHeadFastBlock: 8,
- expHeadBlock: 0,
- expSnapshotBottom: 4, // Last committed disk layer, wait recovery
- },
- }
- test.test(t)
- test.teardown()
- }
- // Tests a Geth was running with snapshot enabled. Then restarts without
- // enabling snapshot and after that re-enable the snapshot again. In this
- // case the snapshot should be rebuilt with latest chain head.
- func TestGappedNewSnapshot(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G
- // Snapshot: G
- //
- // SetHead(0)
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4->C5->C6->C7->C8->C9->C10
- //
- // Expected head header : C10
- // Expected head fast block: C10
- // Expected head block : C10
- // Expected snapshot disk : C10
- test := &gappedSnapshotTest{
- snapshotTestBasic: snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 0,
- commitBlock: 0,
- expCanonicalBlocks: 10,
- expHeadHeader: 10,
- expHeadFastBlock: 10,
- expHeadBlock: 10,
- expSnapshotBottom: 10, // Rebuilt snapshot from the latest HEAD
- },
- gapped: 2,
- }
- test.test(t)
- test.teardown()
- }
- // Tests the Geth was running with snapshot enabled and resetHead is applied.
- // In this case the head is rewound to the target(with state available). After
- // that the chain is restarted and the original disk layer is kept.
- func TestSetHeadWithNewSnapshot(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G
- // Snapshot: G
- //
- // SetHead(4)
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4
- //
- // Expected head header : C4
- // Expected head fast block: C4
- // Expected head block : C4
- // Expected snapshot disk : G
- test := &setHeadSnapshotTest{
- snapshotTestBasic: snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 0,
- commitBlock: 0,
- expCanonicalBlocks: 4,
- expHeadHeader: 4,
- expHeadFastBlock: 4,
- expHeadBlock: 4,
- expSnapshotBottom: 0, // The initial disk layer is built from the genesis
- },
- setHead: 4,
- }
- test.test(t)
- test.teardown()
- }
- // Tests the Geth was running with a complete snapshot and then imports a few
- // more new blocks on top without enabling the snapshot. After the restart,
- // crash happens. Check everything is ok after the restart.
- func TestRecoverSnapshotFromWipingCrash(t *testing.T) {
- // Chain:
- // G->C1->C2->C3->C4->C5->C6->C7->C8 (HEAD)
- //
- // Commit: G
- // Snapshot: G
- //
- // SetHead(0)
- //
- // ------------------------------
- //
- // Expected in leveldb:
- // G->C1->C2->C3->C4->C5->C6->C7->C8->C9->C10
- //
- // Expected head header : C10
- // Expected head fast block: C10
- // Expected head block : C8
- // Expected snapshot disk : C10
- test := &wipeCrashSnapshotTest{
- snapshotTestBasic: snapshotTestBasic{
- chainBlocks: 8,
- snapshotBlock: 4,
- commitBlock: 0,
- expCanonicalBlocks: 10,
- expHeadHeader: 10,
- expHeadFastBlock: 10,
- expHeadBlock: 10,
- expSnapshotBottom: 10,
- },
- newBlocks: 2,
- }
- test.test(t)
- test.teardown()
- }
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