path: root/light/state_test.go

// Copyright 2015 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 light

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

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/state"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/ethdb"
    "golang.org/x/net/context"
)

func makeTestState() (common.Hash, ethdb.Database) {
    sdb, _ := ethdb.NewMemDatabase()
    st, _ := state.New(common.Hash{}, sdb)
    for i := byte(0); i < 100; i++ {
        addr := common.Address{i}
        for j := byte(0); j < 100; j++ {
            st.SetState(addr, common.Hash{j}, common.Hash{i, j})
        }
        st.SetNonce(addr, 100)
        st.AddBalance(addr, big.NewInt(int64(i)))
        st.SetCode(addr, []byte{i, i, i})
    }
    root, _ := st.Commit(false)
    return root, sdb
}

func TestLightStateOdr(t *testing.T) {
    root, sdb := makeTestState()
    header := &types.Header{Root: root, Number: big.NewInt(0)}
    core.WriteHeader(sdb, header)
    ldb, _ := ethdb.NewMemDatabase()
    odr := &testOdr{sdb: sdb, ldb: ldb}
    ls := NewLightState(StateTrieID(header), odr)
    ctx := context.Background()

    for i := byte(0); i < 100; i++ {
        addr := common.Address{i}
        err := ls.AddBalance(ctx, addr, big.NewInt(1000))
        if err != nil {
            t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
        }
        err = ls.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 100})
        if err != nil {
            t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
        }
    }

    addr := common.Address{100}
    _, err := ls.CreateStateObject(ctx, addr)
    if err != nil {
        t.Fatalf("Error creating state object: %v", err)
    }
    err = ls.SetCode(ctx, addr, []byte{100, 100, 100})
    if err != nil {
        t.Fatalf("Error setting code: %v", err)
    }
    err = ls.AddBalance(ctx, addr, big.NewInt(1100))
    if err != nil {
        t.Fatalf("Error adding balance to acc[100]: %v", err)
    }
    for j := byte(0); j < 101; j++ {
        err = ls.SetState(ctx, addr, common.Hash{j}, common.Hash{100, j})
        if err != nil {
            t.Fatalf("Error setting storage of acc[100]: %v", err)
        }
    }
    err = ls.SetNonce(ctx, addr, 100)
    if err != nil {
        t.Fatalf("Error setting nonce for acc[100]: %v", err)
    }

    for i := byte(0); i < 101; i++ {
        addr := common.Address{i}

        bal, err := ls.GetBalance(ctx, addr)
        if err != nil {
            t.Fatalf("Error getting balance of acc[%d]: %v", i, err)
        }
        if bal.Int64() != int64(i)+1000 {
            t.Fatalf("Incorrect balance at acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
        }

        nonce, err := ls.GetNonce(ctx, addr)
        if err != nil {
            t.Fatalf("Error getting nonce of acc[%d]: %v", i, err)
        }
        if nonce != 100 {
            t.Fatalf("Incorrect nonce at acc[%d]: expected %v, got %v", i, 100, nonce)
        }

        code, err := ls.GetCode(ctx, addr)
        exp := []byte{i, i, i}
        if err != nil {
            t.Fatalf("Error getting code of acc[%d]: %v", i, err)
        }
        if !bytes.Equal(code, exp) {
            t.Fatalf("Incorrect code at acc[%d]: expected %v, got %v", i, exp, code)
        }

        for j := byte(0); j < 101; j++ {
            exp := common.Hash{i, j}
            val, err := ls.GetState(ctx, addr, common.Hash{j})
            if err != nil {
                t.Fatalf("Error retrieving acc[%d].storage[%d]: %v", i, j, err)
            }
            if val != exp {
                t.Fatalf("Retrieved wrong value from acc[%d].storage[%d]: expected %04x, got %04x", i, j, exp, val)
            }
        }
    }
}

func TestLightStateSetCopy(t *testing.T) {
    root, sdb := makeTestState()
    header := &types.Header{Root: root, Number: big.NewInt(0)}
    core.WriteHeader(sdb, header)
    ldb, _ := ethdb.NewMemDatabase()
    odr := &testOdr{sdb: sdb, ldb: ldb}
    ls := NewLightState(StateTrieID(header), odr)
    ctx := context.Background()

    for i := byte(0); i < 100; i++ {
        addr := common.Address{i}
        err := ls.AddBalance(ctx, addr, big.NewInt(1000))
        if err != nil {
            t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
        }
        err = ls.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 100})
        if err != nil {
            t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
        }
    }

    ls2 := ls.Copy()

    for i := byte(0); i < 100; i++ {
        addr := common.Address{i}
        err := ls2.AddBalance(ctx, addr, big.NewInt(1000))
        if err != nil {
            t.Fatalf("Error adding balance to acc[%d]: %v", i, err)
        }
        err = ls2.SetState(ctx, addr, common.Hash{100}, common.Hash{i, 200})
        if err != nil {
            t.Fatalf("Error setting storage of acc[%d]: %v", i, err)
        }
    }

    lsx := ls.Copy()
    ls.Set(ls2)
    ls2.Set(lsx)

    for i := byte(0); i < 100; i++ {
        addr := common.Address{i}
        // check balance in ls
        bal, err := ls.GetBalance(ctx, addr)
        if err != nil {
            t.Fatalf("Error getting balance to acc[%d]: %v", i, err)
        }
        if bal.Int64() != int64(i)+2000 {
            t.Fatalf("Incorrect balance at ls.acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
        }
        // check balance in ls2
        bal, err = ls2.GetBalance(ctx, addr)
        if err != nil {
            t.Fatalf("Error getting balance to acc[%d]: %v", i, err)
        }
        if bal.Int64() != int64(i)+1000 {
            t.Fatalf("Incorrect balance at ls.acc[%d]: expected %v, got %v", i, int64(i)+1000, bal.Int64())
        }
        // check storage in ls
        exp := common.Hash{i, 200}
        val, err := ls.GetState(ctx, addr, common.Hash{100})
        if err != nil {
            t.Fatalf("Error retrieving acc[%d].storage[100]: %v", i, err)
        }
        if val != exp {
            t.Fatalf("Retrieved wrong value from acc[%d].storage[100]: expected %04x, got %04x", i, exp, val)
        }
        // check storage in ls2
        exp = common.Hash{i, 100}
        val, err = ls2.GetState(ctx, addr, common.Hash{100})
        if err != nil {
            t.Fatalf("Error retrieving acc[%d].storage[100]: %v", i, err)
        }
        if val != exp {
            t.Fatalf("Retrieved wrong value from acc[%d].storage[100]: expected %04x, got %04x", i, exp, val)
        }
    }
}

func TestLightStateDelete(t *testing.T) {
    root, sdb := makeTestState()
    header := &types.Header{Root: root, Number: big.NewInt(0)}
    core.WriteHeader(sdb, header)
    ldb, _ := ethdb.NewMemDatabase()
    odr := &testOdr{sdb: sdb, ldb: ldb}
    ls := NewLightState(StateTrieID(header), odr)
    ctx := context.Background()

    addr := common.Address{42}

    b, err := ls.HasAccount(ctx, addr)
    if err != nil {
        t.Fatalf("HasAccount error: %v", err)
    }
    if !b {
        t.Fatalf("HasAccount returned false, expected true")
    }

    b, err = ls.HasSuicided(ctx, addr)
    if err != nil {
        t.Fatalf("HasSuicided error: %v", err)
    }
    if b {
        t.Fatalf("HasSuicided returned true, expected false")
    }

    ls.Suicide(ctx, addr)

    b, err = ls.HasSuicided(ctx, addr)
    if err != nil {
        t.Fatalf("HasSuicided error: %v", err)
    }
    if !b {
        t.Fatalf("HasSuicided returned false, expected true")
    }
}