path: root/core/rawdb/accessors_chain_test.go

// Copyright 2018 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/>.

package rawdb

import (
    "bytes"
    "math/big"
    "testing"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/ethdb"
    "github.com/ethereum/go-ethereum/rlp"
    "golang.org/x/crypto/sha3"
)

// Tests block header storage and retrieval operations.
func TestHeaderStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    // Create a test header to move around the database and make sure it's really new
    header := &types.Header{Number: big.NewInt(42), Extra: []byte("test header")}
    if entry := ReadHeader(db, header.Hash(), header.Number.Uint64()); entry != nil {
        t.Fatalf("Non existent header returned: %v", entry)
    }
    // Write and verify the header in the database
    WriteHeader(db, header)
    if entry := ReadHeader(db, header.Hash(), header.Number.Uint64()); entry == nil {
        t.Fatalf("Stored header not found")
    } else if entry.Hash() != header.Hash() {
        t.Fatalf("Retrieved header mismatch: have %v, want %v", entry, header)
    }
    if entry := ReadHeaderRLP(db, header.Hash(), header.Number.Uint64()); entry == nil {
        t.Fatalf("Stored header RLP not found")
    } else {
        hasher := sha3.NewLegacyKeccak256()
        hasher.Write(entry)

        if hash := common.BytesToHash(hasher.Sum(nil)); hash != header.Hash() {
            t.Fatalf("Retrieved RLP header mismatch: have %v, want %v", entry, header)
        }
    }
    // Delete the header and verify the execution
    DeleteHeader(db, header.Hash(), header.Number.Uint64())
    if entry := ReadHeader(db, header.Hash(), header.Number.Uint64()); entry != nil {
        t.Fatalf("Deleted header returned: %v", entry)
    }
}

// Tests block body storage and retrieval operations.
func TestBodyStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    // Create a test body to move around the database and make sure it's really new
    body := &types.Body{Uncles: []*types.Header{{Extra: []byte("test header")}}}

    hasher := sha3.NewLegacyKeccak256()
    rlp.Encode(hasher, body)
    hash := common.BytesToHash(hasher.Sum(nil))

    if entry := ReadBody(db, hash, 0); entry != nil {
        t.Fatalf("Non existent body returned: %v", entry)
    }
    // Write and verify the body in the database
    WriteBody(db, hash, 0, body)
    if entry := ReadBody(db, hash, 0); entry == nil {
        t.Fatalf("Stored body not found")
    } else if types.DeriveSha(types.Transactions(entry.Transactions)) != types.DeriveSha(types.Transactions(body.Transactions)) || types.CalcUncleHash(entry.Uncles) != types.CalcUncleHash(body.Uncles) {
        t.Fatalf("Retrieved body mismatch: have %v, want %v", entry, body)
    }
    if entry := ReadBodyRLP(db, hash, 0); entry == nil {
        t.Fatalf("Stored body RLP not found")
    } else {
        hasher := sha3.NewLegacyKeccak256()
        hasher.Write(entry)

        if calc := common.BytesToHash(hasher.Sum(nil)); calc != hash {
            t.Fatalf("Retrieved RLP body mismatch: have %v, want %v", entry, body)
        }
    }
    // Delete the body and verify the execution
    DeleteBody(db, hash, 0)
    if entry := ReadBody(db, hash, 0); entry != nil {
        t.Fatalf("Deleted body returned: %v", entry)
    }
}

// Tests block storage and retrieval operations.
func TestBlockStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    // Create a test block to move around the database and make sure it's really new
    block := types.NewBlockWithHeader(&types.Header{
        Extra:       []byte("test block"),
        UncleHash:   types.EmptyUncleHash,
        TxHash:      types.EmptyRootHash,
        ReceiptHash: types.EmptyRootHash,
    })
    if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Non existent block returned: %v", entry)
    }
    if entry := ReadHeader(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Non existent header returned: %v", entry)
    }
    if entry := ReadBody(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Non existent body returned: %v", entry)
    }
    // Write and verify the block in the database
    WriteBlock(db, block)
    if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry == nil {
        t.Fatalf("Stored block not found")
    } else if entry.Hash() != block.Hash() {
        t.Fatalf("Retrieved block mismatch: have %v, want %v", entry, block)
    }
    if entry := ReadHeader(db, block.Hash(), block.NumberU64()); entry == nil {
        t.Fatalf("Stored header not found")
    } else if entry.Hash() != block.Header().Hash() {
        t.Fatalf("Retrieved header mismatch: have %v, want %v", entry, block.Header())
    }
    if entry := ReadBody(db, block.Hash(), block.NumberU64()); entry == nil {
        t.Fatalf("Stored body not found")
    } else if types.DeriveSha(types.Transactions(entry.Transactions)) != types.DeriveSha(block.Transactions()) || types.CalcUncleHash(entry.Uncles) != types.CalcUncleHash(block.Uncles()) {
        t.Fatalf("Retrieved body mismatch: have %v, want %v", entry, block.Body())
    }
    // Delete the block and verify the execution
    DeleteBlock(db, block.Hash(), block.NumberU64())
    if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Deleted block returned: %v", entry)
    }
    if entry := ReadHeader(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Deleted header returned: %v", entry)
    }
    if entry := ReadBody(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Deleted body returned: %v", entry)
    }
}

// Tests that partial block contents don't get reassembled into full blocks.
func TestPartialBlockStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()
    block := types.NewBlockWithHeader(&types.Header{
        Extra:       []byte("test block"),
        UncleHash:   types.EmptyUncleHash,
        TxHash:      types.EmptyRootHash,
        ReceiptHash: types.EmptyRootHash,
    })
    // Store a header and check that it's not recognized as a block
    WriteHeader(db, block.Header())
    if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Non existent block returned: %v", entry)
    }
    DeleteHeader(db, block.Hash(), block.NumberU64())

    // Store a body and check that it's not recognized as a block
    WriteBody(db, block.Hash(), block.NumberU64(), block.Body())
    if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry != nil {
        t.Fatalf("Non existent block returned: %v", entry)
    }
    DeleteBody(db, block.Hash(), block.NumberU64())

    // Store a header and a body separately and check reassembly
    WriteHeader(db, block.Header())
    WriteBody(db, block.Hash(), block.NumberU64(), block.Body())

    if entry := ReadBlock(db, block.Hash(), block.NumberU64()); entry == nil {
        t.Fatalf("Stored block not found")
    } else if entry.Hash() != block.Hash() {
        t.Fatalf("Retrieved block mismatch: have %v, want %v", entry, block)
    }
}

// Tests block total difficulty storage and retrieval operations.
func TestTdStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    // Create a test TD to move around the database and make sure it's really new
    hash, td := common.Hash{}, big.NewInt(314)
    if entry := ReadTd(db, hash, 0); entry != nil {
        t.Fatalf("Non existent TD returned: %v", entry)
    }
    // Write and verify the TD in the database
    WriteTd(db, hash, 0, td)
    if entry := ReadTd(db, hash, 0); entry == nil {
        t.Fatalf("Stored TD not found")
    } else if entry.Cmp(td) != 0 {
        t.Fatalf("Retrieved TD mismatch: have %v, want %v", entry, td)
    }
    // Delete the TD and verify the execution
    DeleteTd(db, hash, 0)
    if entry := ReadTd(db, hash, 0); entry != nil {
        t.Fatalf("Deleted TD returned: %v", entry)
    }
}

// Tests that canonical numbers can be mapped to hashes and retrieved.
func TestCanonicalMappingStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    // Create a test canonical number and assinged hash to move around
    hash, number := common.Hash{0: 0xff}, uint64(314)
    if entry := ReadCanonicalHash(db, number); entry != (common.Hash{}) {
        t.Fatalf("Non existent canonical mapping returned: %v", entry)
    }
    // Write and verify the TD in the database
    WriteCanonicalHash(db, hash, number)
    if entry := ReadCanonicalHash(db, number); entry == (common.Hash{}) {
        t.Fatalf("Stored canonical mapping not found")
    } else if entry != hash {
        t.Fatalf("Retrieved canonical mapping mismatch: have %v, want %v", entry, hash)
    }
    // Delete the TD and verify the execution
    DeleteCanonicalHash(db, number)
    if entry := ReadCanonicalHash(db, number); entry != (common.Hash{}) {
        t.Fatalf("Deleted canonical mapping returned: %v", entry)
    }
}

// Tests that head headers and head blocks can be assigned, individually.
func TestHeadStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    blockHead := types.NewBlockWithHeader(&types.Header{Extra: []byte("test block header")})
    blockFull := types.NewBlockWithHeader(&types.Header{Extra: []byte("test block full")})
    blockFast := types.NewBlockWithHeader(&types.Header{Extra: []byte("test block fast")})

    // Check that no head entries are in a pristine database
    if entry := ReadHeadHeaderHash(db); entry != (common.Hash{}) {
        t.Fatalf("Non head header entry returned: %v", entry)
    }
    if entry := ReadHeadBlockHash(db); entry != (common.Hash{}) {
        t.Fatalf("Non head block entry returned: %v", entry)
    }
    if entry := ReadHeadFastBlockHash(db); entry != (common.Hash{}) {
        t.Fatalf("Non fast head block entry returned: %v", entry)
    }
    // Assign separate entries for the head header and block
    WriteHeadHeaderHash(db, blockHead.Hash())
    WriteHeadBlockHash(db, blockFull.Hash())
    WriteHeadFastBlockHash(db, blockFast.Hash())

    // Check that both heads are present, and different (i.e. two heads maintained)
    if entry := ReadHeadHeaderHash(db); entry != blockHead.Hash() {
        t.Fatalf("Head header hash mismatch: have %v, want %v", entry, blockHead.Hash())
    }
    if entry := ReadHeadBlockHash(db); entry != blockFull.Hash() {
        t.Fatalf("Head block hash mismatch: have %v, want %v", entry, blockFull.Hash())
    }
    if entry := ReadHeadFastBlockHash(db); entry != blockFast.Hash() {
        t.Fatalf("Fast head block hash mismatch: have %v, want %v", entry, blockFast.Hash())
    }
}

// Tests that receipts associated with a single block can be stored and retrieved.
func TestBlockReceiptStorage(t *testing.T) {
    db := ethdb.NewMemDatabase()

    receipt1 := &types.Receipt{
        Status:            types.ReceiptStatusFailed,
        CumulativeGasUsed: 1,
        Logs: []*types.Log{
            {Address: common.BytesToAddress([]byte{0x11})},
            {Address: common.BytesToAddress([]byte{0x01, 0x11})},
        },
        TxHash:          common.BytesToHash([]byte{0x11, 0x11}),
        ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}),
        GasUsed:         111111,
    }
    receipt2 := &types.Receipt{
        PostState:         common.Hash{2}.Bytes(),
        CumulativeGasUsed: 2,
        Logs: []*types.Log{
            {Address: common.BytesToAddress([]byte{0x22})},
            {Address: common.BytesToAddress([]byte{0x02, 0x22})},
        },
        TxHash:          common.BytesToHash([]byte{0x22, 0x22}),
        ContractAddress: common.BytesToAddress([]byte{0x02, 0x22, 0x22}),
        GasUsed:         222222,
    }
    receipts := []*types.Receipt{receipt1, receipt2}

    // Check that no receipt entries are in a pristine database
    hash := common.BytesToHash([]byte{0x03, 0x14})
    if rs := ReadReceipts(db, hash, 0); len(rs) != 0 {
        t.Fatalf("non existent receipts returned: %v", rs)
    }
    // Insert the receipt slice into the database and check presence
    WriteReceipts(db, hash, 0, receipts)
    if rs := ReadReceipts(db, hash, 0); len(rs) == 0 {
        t.Fatalf("no receipts returned")
    } else {
        for i := 0; i < len(receipts); i++ {
            rlpHave, _ := rlp.EncodeToBytes(rs[i])
            rlpWant, _ := rlp.EncodeToBytes(receipts[i])

            if !bytes.Equal(rlpHave, rlpWant) {
                t.Fatalf("receipt #%d: receipt mismatch: have %v, want %v", i, rs[i], receipts[i])
            }
        }
    }
    // Delete the receipt slice and check purge
    DeleteReceipts(db, hash, 0)
    if rs := ReadReceipts(db, hash, 0); len(rs) != 0 {
        t.Fatalf("deleted receipts returned: %v", rs)
    }
}