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https://github.com/nspcc-dev/neo-go.git
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d6bd6b6888
It can be used to attack the network (amplifying DOS), so it's broken
beyond repair. This reverts ac601601c1.
See also neo-project/neo#2560 and neo-project/neo#2561.
54 lines
2.2 KiB
Go
54 lines
2.2 KiB
Go
package core
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import (
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"math/big"
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"testing"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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"github.com/stretchr/testify/require"
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)
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func TestGAS_Roundtrip(t *testing.T) {
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bc := newTestChain(t)
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getUtilityTokenBalance := func(bc *Blockchain, acc util.Uint160) (*big.Int, uint32) {
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lub, err := bc.GetNEP17LastUpdated(acc)
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require.NoError(t, err)
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return bc.GetUtilityTokenBalance(acc), lub[bc.contracts.GAS.ID]
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}
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initialBalance, _ := getUtilityTokenBalance(bc, neoOwner)
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require.NotNil(t, initialBalance)
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t.Run("bad: amount > initial balance", func(t *testing.T) {
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tx := transferTokenFromMultisigAccountWithAssert(t, bc, neoOwner, bc.contracts.GAS.Hash, initialBalance.Int64()+1, false)
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aer, err := bc.GetAppExecResults(tx.Hash(), trigger.Application)
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require.NoError(t, err)
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require.Equal(t, vm.HaltState, aer[0].VMState, aer[0].FaultException) // transfer without assert => HALT state
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checkResult(t, &aer[0], stackitem.NewBool(false))
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require.Len(t, aer[0].Events, 0) // failed transfer => no events
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// check balance and height were not changed
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updatedBalance, updatedHeight := getUtilityTokenBalance(bc, neoOwner)
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initialBalance.Sub(initialBalance, big.NewInt(tx.SystemFee+tx.NetworkFee))
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require.Equal(t, initialBalance, updatedBalance)
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require.Equal(t, bc.BlockHeight(), updatedHeight)
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})
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t.Run("good: amount < initial balance", func(t *testing.T) {
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amount := initialBalance.Int64() - 10_00000000
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tx := transferTokenFromMultisigAccountWithAssert(t, bc, neoOwner, bc.contracts.GAS.Hash, amount, false)
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aer, err := bc.GetAppExecResults(tx.Hash(), trigger.Application)
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require.NoError(t, err)
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require.Equal(t, vm.HaltState, aer[0].VMState, aer[0].FaultException)
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checkResult(t, &aer[0], stackitem.NewBool(true))
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require.Len(t, aer[0].Events, 1) // roundtrip
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// check balance wasn't changed and height was updated
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updatedBalance, updatedHeight := getUtilityTokenBalance(bc, neoOwner)
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initialBalance.Sub(initialBalance, big.NewInt(tx.SystemFee+tx.NetworkFee))
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require.Equal(t, initialBalance, updatedBalance)
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require.Equal(t, bc.BlockHeight(), updatedHeight)
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})
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}
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