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} */