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99 lines
2.6 KiB

package vm
import (
"crypto/rand"
"encoding/hex"
"fmt"
"strings"
"testing"
"time"
. "github.com/tendermint/tendermint/common"
. "github.com/tendermint/tendermint/vm"
)
func newAppState() *FakeAppState {
return &FakeAppState{
accounts: make(map[string]*Account),
storage: make(map[string]Word256),
logs: nil,
}
}
func newParams() Params {
return Params{
BlockHeight: 0,
BlockHash: Zero256,
BlockTime: 0,
GasLimit: 0,
}
}
func makeBytes(n int) []byte {
b := make([]byte, n)
rand.Read(b)
return b
}
func TestVM(t *testing.T) {
ourVm := NewVM(newAppState(), newParams(), Zero256, nil)
// Create accounts
account1 := &Account{
Address: Uint64ToWord256(100),
}
account2 := &Account{
Address: Uint64ToWord256(101),
}
var gas uint64 = 1000
N := []byte{0xff, 0xff}
// Loop N times
code := []byte{0x60, 0x00, 0x60, 0x20, 0x52, 0x5B, byte(0x60 + len(N) - 1)}
for i := 0; i < len(N); i++ {
code = append(code, N[i])
}
code = append(code, []byte{0x60, 0x20, 0x51, 0x12, 0x15, 0x60, byte(0x1b + len(N)), 0x57, 0x60, 0x01, 0x60, 0x20, 0x51, 0x01, 0x60, 0x20, 0x52, 0x60, 0x05, 0x56, 0x5B}...)
start := time.Now()
output, err := ourVm.Call(account1, account2, code, []byte{}, 0, &gas)
fmt.Printf("Output: %v Error: %v\n", output, err)
fmt.Println("Call took:", time.Since(start))
}
func TestSubcurrency(t *testing.T) {
st := newAppState()
// Create accounts
account1 := &Account{
Address: LeftPadWord256(makeBytes(20)),
}
account2 := &Account{
Address: LeftPadWord256(makeBytes(20)),
}
st.accounts[account1.Address.String()] = account1
st.accounts[account2.Address.String()] = account2
ourVm := NewVM(st, newParams(), Zero256, nil)
var gas uint64 = 1000
code_parts := []string{"620f42403355",
"7c0100000000000000000000000000000000000000000000000000000000",
"600035046315cf268481141561004657",
"6004356040526040515460605260206060f35b63693200ce81141561008757",
"60043560805260243560a052335460c0523360e05260a05160c05112151561008657",
"60a05160c0510360e0515560a0516080515401608051555b5b505b6000f3"}
code, _ := hex.DecodeString(strings.Join(code_parts, ""))
fmt.Printf("Code: %x\n", code)
data, _ := hex.DecodeString("693200CE0000000000000000000000004B4363CDE27C2EB05E66357DB05BC5C88F850C1A0000000000000000000000000000000000000000000000000000000000000005")
output, err := ourVm.Call(account1, account2, code, data, 0, &gas)
fmt.Printf("Output: %v Error: %v\n", output, err)
}
/*
// infinite loop
code := []byte{0x5B, 0x60, 0x00, 0x56}
// mstore
code := []byte{0x60, 0x00, 0x60, 0x20}
// mstore, mload
code := []byte{0x60, 0x01, 0x60, 0x20, 0x52, 0x60, 0x20, 0x51}
*/