path: root/core/state/managed_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 state

import (
    "testing"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/ethdb"
)

var addr = common.BytesToAddress([]byte("test"))

func create() (*ManagedState, *account) {
    db, _ := ethdb.NewMemDatabase()
    statedb := New(common.Hash{}, db)
    ms := ManageState(statedb)
    so := &StateObject{address: addr, nonce: 100}
    ms.StateDB.stateObjects[addr.Str()] = so
    ms.accounts[addr.Str()] = newAccount(so)

    return ms, ms.accounts[addr.Str()]
}

func TestNewNonce(t *testing.T) {
    ms, _ := create()

    nonce := ms.NewNonce(addr)
    if nonce != 100 {
        t.Error("expected nonce 100. got", nonce)
    }

    nonce = ms.NewNonce(addr)
    if nonce != 101 {
        t.Error("expected nonce 101. got", nonce)
    }
}

func TestRemove(t *testing.T) {
    ms, account := create()

    nn := make([]bool, 10)
    for i, _ := range nn {
        nn[i] = true
    }
    account.nonces = append(account.nonces, nn...)

    i := uint64(5)
    ms.RemoveNonce(addr, account.nstart+i)
    if len(account.nonces) != 5 {
        t.Error("expected", i, "'th index to be false")
    }
}

func TestReuse(t *testing.T) {
    ms, account := create()

    nn := make([]bool, 10)
    for i, _ := range nn {
        nn[i] = true
    }
    account.nonces = append(account.nonces, nn...)

    i := uint64(5)
    ms.RemoveNonce(addr, account.nstart+i)
    nonce := ms.NewNonce(addr)
    if nonce != 105 {
        t.Error("expected nonce to be 105. got", nonce)
    }
}

func TestRemoteNonceChange(t *testing.T) {
    ms, account := create()
    nn := make([]bool, 10)
    for i, _ := range nn {
        nn[i] = true
    }
    account.nonces = append(account.nonces, nn...)
    nonce := ms.NewNonce(addr)

    ms.StateDB.stateObjects[addr.Str()].nonce = 200
    nonce = ms.NewNonce(addr)
    if nonce != 200 {
        t.Error("expected nonce after remote update to be", 201, "got", nonce)
    }
    ms.NewNonce(addr)
    ms.NewNonce(addr)
    ms.NewNonce(addr)
    ms.StateDB.stateObjects[addr.Str()].nonce = 200
    nonce = ms.NewNonce(addr)
    if nonce != 204 {
        t.Error("expected nonce after remote update to be", 201, "got", nonce)
    }
}

func TestSetNonce(t *testing.T) {
    ms, _ := create()

    var addr common.Address
    ms.SetNonce(addr, 10)

    if ms.GetNonce(addr) != 10 {
        t.Error("Expected nonce of 10, got", ms.GetNonce(addr))
    }

    addr[0] = 1
    ms.StateDB.SetNonce(addr, 1)

    if ms.GetNonce(addr) != 1 {
        t.Error("Expected nonce of 1, got", ms.GetNonce(addr))
    }
}