neoneo-go/pkg/vm/cli/cli_test.go

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package cli
import (
"bytes"
"encoding/base64"
"encoding/hex"
"encoding/json"
"fmt"
gio "io"
"io/ioutil"
"os"
"path/filepath"
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"strings"
"sync"
"testing"
"time"
"github.com/abiosoft/readline"
"github.com/nspcc-dev/neo-go/internal/random"
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"github.com/nspcc-dev/neo-go/pkg/compiler"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
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"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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"github.com/stretchr/testify/require"
"go.uber.org/atomic"
)
type readCloser struct {
sync.Mutex
bytes.Buffer
}
func (r *readCloser) Close() error {
return nil
}
func (r *readCloser) Read(p []byte) (int, error) {
r.Lock()
defer r.Unlock()
return r.Buffer.Read(p)
}
func (r *readCloser) WriteString(s string) {
r.Lock()
defer r.Unlock()
r.Buffer.WriteString(s)
}
type executor struct {
in *readCloser
out *bytes.Buffer
cli *VMCLI
ch chan struct{}
exit atomic.Bool
}
func newTestVMCLI(t *testing.T) *executor {
return newTestVMCLIWithLogo(t, false)
}
func newTestVMCLIWithLogo(t *testing.T, printLogo bool) *executor {
e := &executor{
in: &readCloser{Buffer: *bytes.NewBuffer(nil)},
out: bytes.NewBuffer(nil),
ch: make(chan struct{}),
}
e.cli = NewWithConfig(printLogo,
func(int) { e.exit.Store(true) },
&readline.Config{
Prompt: "",
Stdin: e.in,
Stdout: e.out,
FuncIsTerminal: func() bool {
return false
},
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})
return e
}
func (e *executor) runProg(t *testing.T, commands ...string) {
cmd := strings.Join(commands, "\n") + "\n"
e.in.WriteString(cmd + "\n")
go func() {
require.NoError(t, e.cli.Run())
close(e.ch)
}()
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select {
case <-e.ch:
case <-time.After(4 * time.Second):
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require.Fail(t, "command took too long time")
}
}
func (e *executor) checkNextLine(t *testing.T, expected string) {
line, err := e.out.ReadString('\n')
require.NoError(t, err)
require.Regexp(t, expected, line)
}
func (e *executor) checkError(t *testing.T, expectedErr error) {
line, err := e.out.ReadString('\n')
require.NoError(t, err)
expected := "Error: " + expectedErr.Error()
require.True(t, strings.HasPrefix(line, expected), fmt.Errorf("expected `%s`, got `%s`", expected, line))
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}
func (e *executor) checkStack(t *testing.T, items ...interface{}) {
d := json.NewDecoder(e.out)
var actual interface{}
require.NoError(t, d.Decode(&actual))
rawActual, err := json.Marshal(actual)
require.NoError(t, err)
expected := vm.NewStack("")
for i := range items {
expected.PushVal(items[i])
}
rawExpected, err := json.Marshal(expected)
require.NoError(t, err)
require.JSONEq(t, string(rawExpected), string(rawActual))
// Decoder has it's own buffer, we need to return unread part to the output.
outRemain := e.out.String()
e.out.Reset()
_, err = gio.Copy(e.out, d.Buffered())
require.NoError(t, err)
e.out.WriteString(outRemain)
_, err = e.out.ReadString('\n')
require.NoError(t, err)
}
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func (e *executor) checkSlot(t *testing.T, items ...interface{}) {
d := json.NewDecoder(e.out)
var actual interface{}
require.NoError(t, d.Decode(&actual))
rawActual, err := json.Marshal(actual)
require.NoError(t, err)
expected := make([]json.RawMessage, len(items))
for i := range items {
if items[i] == nil {
expected[i] = []byte("null")
continue
}
data, err := stackitem.ToJSONWithTypes(stackitem.Make(items[i]))
require.NoError(t, err)
expected[i] = data
}
rawExpected, err := json.MarshalIndent(expected, "", " ")
require.NoError(t, err)
require.JSONEq(t, string(rawExpected), string(rawActual))
// Decoder has it's own buffer, we need to return unread part to the output.
outRemain := e.out.String()
e.out.Reset()
_, err = gio.Copy(e.out, d.Buffered())
require.NoError(t, err)
e.out.WriteString(outRemain)
_, err = e.out.ReadString('\n')
require.NoError(t, err)
}
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func TestLoad(t *testing.T) {
script := []byte{byte(opcode.PUSH3), byte(opcode.PUSH4), byte(opcode.ADD)}
t.Run("loadhex", func(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t,
"loadhex",
"loadhex notahex",
"loadhex "+hex.EncodeToString(script))
e.checkError(t, ErrMissingParameter)
e.checkError(t, ErrInvalidParameter)
e.checkNextLine(t, "READY: loaded 3 instructions")
})
t.Run("loadbase64", func(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t,
"loadbase64",
"loadbase64 not_a_base64",
"loadbase64 "+base64.StdEncoding.EncodeToString(script))
e.checkError(t, ErrMissingParameter)
e.checkError(t, ErrInvalidParameter)
e.checkNextLine(t, "READY: loaded 3 instructions")
})
src := `package kek
func Main(op string, a, b int) int {
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if op == "add" {
return a + b
} else {
return a * b
}
}`
tmpDir := t.TempDir()
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t.Run("loadgo", func(t *testing.T) {
filename := filepath.Join(tmpDir, "vmtestcontract.go")
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require.NoError(t, ioutil.WriteFile(filename, []byte(src), os.ModePerm))
filename = "'" + filename + "'"
filenameErr := filepath.Join(tmpDir, "vmtestcontract_err.go")
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require.NoError(t, ioutil.WriteFile(filenameErr, []byte(src+"invalid_token"), os.ModePerm))
filenameErr = "'" + filenameErr + "'"
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e := newTestVMCLI(t)
e.runProg(t,
"loadgo",
"loadgo "+filenameErr,
"loadgo "+filename,
"run main add 3 5")
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e.checkError(t, ErrMissingParameter)
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "READY: loaded \\d* instructions")
e.checkStack(t, 8)
})
t.Run("loadgo, check calling flags", func(t *testing.T) {
srcAllowNotify := `package kek
import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
func Main() int {
runtime.Log("Hello, world!")
return 1
}
`
filename := filepath.Join(tmpDir, "vmtestcontract.go")
require.NoError(t, ioutil.WriteFile(filename, []byte(srcAllowNotify), os.ModePerm))
filename = "'" + filename + "'"
e := newTestVMCLI(t)
e.runProg(t,
"loadgo "+filename,
"run main")
e.checkNextLine(t, "READY: loaded \\d* instructions")
e.checkStack(t, 1)
})
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t.Run("loadnef", func(t *testing.T) {
config.Version = "0.92.0-test"
nefFile, di, err := compiler.CompileWithOptions("test", strings.NewReader(src), nil)
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require.NoError(t, err)
filename := filepath.Join(tmpDir, "vmtestcontract.nef")
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rawNef, err := nefFile.Bytes()
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(filename, rawNef, os.ModePerm))
m, err := di.ConvertToManifest(&compiler.Options{})
require.NoError(t, err)
manifestFile := filepath.Join(tmpDir, "vmtestcontract.manifest.json")
rawManifest, err := json.Marshal(m)
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
filenameErr := filepath.Join(tmpDir, "vmtestcontract_err.nef")
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require.NoError(t, ioutil.WriteFile(filenameErr, append([]byte{1, 2, 3, 4}, rawNef...), os.ModePerm))
notExists := filepath.Join(tmpDir, "notexists.json")
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manifestFile = "'" + manifestFile + "'"
filename = "'" + filename + "'"
filenameErr = "'" + filenameErr + "'"
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e := newTestVMCLI(t)
e.runProg(t,
"loadnef",
"loadnef "+filenameErr+" "+manifestFile,
"loadnef "+filename+" "+notExists,
"loadnef "+filename+" "+filename,
"loadnef "+filename+" "+manifestFile,
"run main add 3 5")
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e.checkError(t, ErrMissingParameter)
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "Error:")
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e.checkNextLine(t, "READY: loaded \\d* instructions")
e.checkStack(t, 8)
})
}
func TestRunWithDifferentArguments(t *testing.T) {
src := `package kek
var a = 1
func init() {
a += 1
}
func InitHasRun() bool {
return a == 2
}
func Negate(arg bool) bool {
return !arg
}
func GetInt(arg int) int {
return arg
}
func GetString(arg string) string {
return arg
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}`
tmpDir := t.TempDir()
filename := filepath.Join(tmpDir, "run_vmtestcontract.go")
require.NoError(t, ioutil.WriteFile(filename, []byte(src), os.ModePerm))
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filename = "'" + filename + "'"
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e := newTestVMCLI(t)
e.runProg(t,
"loadgo "+filename, "run notexists",
"loadgo "+filename, "run negate false",
"loadgo "+filename, "run negate true",
"loadgo "+filename, "run negate bool:invalid",
"loadgo "+filename, "run getInt 123",
"loadgo "+filename, "run getInt int:invalid",
"loadgo "+filename, "run getString validstring",
"loadgo "+filename, "run initHasRun",
"loadhex "+hex.EncodeToString([]byte{byte(opcode.ADD)}),
"run _ 1 2",
"loadbase64 "+base64.StdEncoding.EncodeToString([]byte{byte(opcode.MUL)}),
"run _ 21 2",
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)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkNextLine(t, "Error:")
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e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, true)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, false)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkError(t, ErrInvalidParameter)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, 123)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkError(t, ErrInvalidParameter)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, "validstring")
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, true)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, 3)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, 42)
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}
func TestPrintOps(t *testing.T) {
w := io.NewBufBinWriter()
emit.String(w.BinWriter, "log")
emit.Syscall(w.BinWriter, interopnames.SystemRuntimeLog)
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emit.Instruction(w.BinWriter, opcode.PUSHDATA1, []byte{3, 1, 2, 3})
script := w.Bytes()
e := newTestVMCLI(t)
e.runProg(t,
"ops",
"loadhex "+hex.EncodeToString(script),
"ops")
e.checkNextLine(t, ".*no program loaded")
e.checkNextLine(t, fmt.Sprintf("READY: loaded %d instructions", len(script)))
e.checkNextLine(t, "INDEX.*OPCODE.*PARAMETER")
e.checkNextLine(t, "0.*PUSHDATA1.*6c6f67")
e.checkNextLine(t, "5.*SYSCALL.*System\\.Runtime\\.Log")
e.checkNextLine(t, "10.*PUSHDATA1.*010203")
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}
func TestLoadAbort(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t,
"loadhex "+hex.EncodeToString([]byte{byte(opcode.PUSH1), byte(opcode.ABORT)}),
"run",
)
e.checkNextLine(t, "READY: loaded 2 instructions")
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e.checkNextLine(t, "Error:.*at instruction 1.*ABORT")
}
func TestBreakpoint(t *testing.T) {
w := io.NewBufBinWriter()
emit.Opcodes(w.BinWriter, opcode.PUSH1, opcode.PUSH2, opcode.ADD, opcode.PUSH6, opcode.ADD)
e := newTestVMCLI(t)
e.runProg(t,
"break 3",
"cont",
"ip",
"loadhex "+hex.EncodeToString(w.Bytes()),
"break",
"break second",
"break 2",
"break 4",
"cont", "estack",
"run", "estack",
"cont",
)
e.checkNextLine(t, "no program loaded")
e.checkNextLine(t, "no program loaded")
e.checkNextLine(t, "no program loaded")
e.checkNextLine(t, "READY: loaded 5 instructions")
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e.checkError(t, ErrMissingParameter)
e.checkError(t, ErrInvalidParameter)
e.checkNextLine(t, "breakpoint added at instruction 2")
e.checkNextLine(t, "breakpoint added at instruction 4")
e.checkNextLine(t, "at breakpoint 2.*ADD")
e.checkStack(t, 1, 2)
e.checkNextLine(t, "at breakpoint 4.*ADD")
e.checkStack(t, 3, 6)
e.checkStack(t, 9)
}
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func TestDumpSSlot(t *testing.T) {
w := io.NewBufBinWriter()
emit.Opcodes(w.BinWriter, opcode.INITSSLOT, 2, // init static slot with size=2
opcode.PUSH5, opcode.STSFLD, 1, // put `int(5)` to sslot[1]; sslot[0] is nil
opcode.LDSFLD1) // put sslot[1] to the top of estack
e := newTestVMCLI(t)
e.runProg(t,
"loadhex "+hex.EncodeToString(w.Bytes()),
"break 5",
"step", "sslot",
"cont", "estack",
)
e.checkNextLine(t, "READY: loaded 6 instructions")
e.checkNextLine(t, "breakpoint added at instruction 5")
e.checkNextLine(t, "at breakpoint 5.*LDSFLD1")
e.checkSlot(t, nil, 5)
e.checkStack(t, 5)
}
func TestDumpLSlot_DumpASlot(t *testing.T) {
w := io.NewBufBinWriter()
emit.Opcodes(w.BinWriter, opcode.PUSH4, opcode.PUSH5, opcode.PUSH6, // items for args slot
opcode.INITSLOT, 2, 3, // init local slot with size=2 and args slot with size 3
opcode.PUSH7, opcode.STLOC1, // put `int(7)` to lslot[1]; lslot[0] is nil
opcode.LDLOC, 1) // put lslot[1] to the top of estack
e := newTestVMCLI(t)
e.runProg(t,
"loadhex "+hex.EncodeToString(w.Bytes()),
"break 6",
"break 8",
"cont", "aslot",
"cont", "lslot",
"cont", "estack",
)
e.checkNextLine(t, "READY: loaded 10 instructions")
e.checkNextLine(t, "breakpoint added at instruction 6")
e.checkNextLine(t, "breakpoint added at instruction 8")
e.checkNextLine(t, "at breakpoint 6.*PUSH7")
e.checkSlot(t, 6, 5, 4) // args slot
e.checkNextLine(t, "at breakpoint 8.*LDLOC")
e.checkSlot(t, nil, 7) // local slot
e.checkStack(t, 7)
}
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func TestStep(t *testing.T) {
script := hex.EncodeToString([]byte{
byte(opcode.PUSH0), byte(opcode.PUSH1), byte(opcode.PUSH2), byte(opcode.PUSH3),
})
e := newTestVMCLI(t)
e.runProg(t,
"step",
"loadhex "+script,
"step invalid",
"step",
"step 2",
"ip", "step", "ip")
e.checkNextLine(t, "no program loaded")
e.checkNextLine(t, "READY: loaded \\d+ instructions")
e.checkError(t, ErrInvalidParameter)
e.checkNextLine(t, "at breakpoint 1.*PUSH1")
e.checkNextLine(t, "at breakpoint 3.*PUSH3")
e.checkNextLine(t, "instruction pointer at 3.*PUSH3")
e.checkNextLine(t, "execution has finished")
e.checkNextLine(t, "execution has finished")
}
func TestErrorOnStepInto(t *testing.T) {
script := hex.EncodeToString([]byte{byte(opcode.ADD)})
e := newTestVMCLI(t)
e.runProg(t,
"stepover",
"loadhex "+script,
"stepover")
e.checkNextLine(t, "Error:.*no program loaded")
e.checkNextLine(t, "READY: loaded 1 instructions")
e.checkNextLine(t, "Error:")
}
func TestStepIntoOverOut(t *testing.T) {
script := hex.EncodeToString([]byte{
byte(opcode.PUSH2), byte(opcode.CALL), 4, byte(opcode.NOP), byte(opcode.RET),
byte(opcode.PUSH3), byte(opcode.ADD), byte(opcode.RET),
})
e := newTestVMCLI(t)
e.runProg(t,
"loadhex "+script,
"step", "stepover", "run",
"loadhex "+script,
"step", "stepinto", "step", "estack", "run",
"loadhex "+script,
"step", "stepinto", "stepout", "run")
e.checkNextLine(t, "READY: loaded 8 instructions")
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e.checkNextLine(t, "at breakpoint 1.*CALL")
e.checkNextLine(t, "instruction pointer at.*NOP")
e.checkStack(t, 5)
e.checkNextLine(t, "READY: loaded 8 instructions")
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e.checkNextLine(t, "at breakpoint.*CALL")
e.checkNextLine(t, "instruction pointer at.*PUSH3")
e.checkNextLine(t, "at breakpoint.*ADD")
e.checkStack(t, 2, 3)
e.checkStack(t, 5)
e.checkNextLine(t, "READY: loaded 8 instructions")
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e.checkNextLine(t, "at breakpoint 1.*CALL")
e.checkNextLine(t, "instruction pointer at.*PUSH3")
e.checkNextLine(t, "instruction pointer at.*NOP")
e.checkStack(t, 5)
}
// `Parse` output is written via `tabwriter` so if any problems
// are encountered in this test, try to replace ' ' with '\\s+'.
func TestParse(t *testing.T) {
t.Run("Integer", func(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t,
"parse",
"parse 6667")
e.checkError(t, ErrMissingParameter)
e.checkNextLine(t, "Integer to Hex.*0b1a")
e.checkNextLine(t, "Integer to Base64.*Cxo=")
e.checkNextLine(t, "Hex to String.*\"fg\"")
e.checkNextLine(t, "Hex to Integer.*26470")
e.checkNextLine(t, "Swap Endianness.*6766")
e.checkNextLine(t, "Base64 to String.*\"뮻\"")
e.checkNextLine(t, "Base64 to BigInteger.*-4477205")
e.checkNextLine(t, "String to Hex.*36363637")
e.checkNextLine(t, "String to Base64.*NjY2Nw==")
})
t.Run("Address", func(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t, "parse "+"NbTiM6h8r99kpRtb428XcsUk1TzKed2gTc")
e.checkNextLine(t, "Address to BE ScriptHash.*aa8acf859d4fe402b34e673f2156821796a488eb")
e.checkNextLine(t, "Address to LE ScriptHash.*eb88a496178256213f674eb302e44f9d85cf8aaa")
e.checkNextLine(t, "Address to Base64.*(BE).*qorPhZ1P5AKzTmc/IVaCF5akiOs=")
e.checkNextLine(t, "Address to Base64.*(LE).*64iklheCViE/Z06zAuRPnYXPiqo=")
e.checkNextLine(t, "String to Hex.*4e6254694d3668387239396b70527462343238586373556b31547a4b656432675463")
e.checkNextLine(t, "String to Base64.*TmJUaU02aDhyOTlrcFJ0YjQyOFhjc1VrMVR6S2VkMmdUYw==")
})
t.Run("Uint160", func(t *testing.T) {
u := util.Uint160{66, 67, 68}
e := newTestVMCLI(t)
e.runProg(t, "parse "+u.StringLE())
e.checkNextLine(t, "Integer to Hex.*b6c706")
e.checkNextLine(t, "Integer to Base64.*tscG")
e.checkNextLine(t, "BE ScriptHash to Address.*NKuyBkoGdZZSLyPbJEetheRhQKhATAzN2A")
e.checkNextLine(t, "LE ScriptHash to Address.*NRxLN7apYwKJihzMt4eSSnU9BJ77dp2TNj")
e.checkNextLine(t, "Hex to String")
e.checkNextLine(t, "Hex to Integer.*378293464438118320046642359484100328446970822656")
e.checkNextLine(t, "Swap Endianness.*4243440000000000000000000000000000000000")
e.checkNextLine(t, "Base64 to String.*")
e.checkNextLine(t, "Base64 to BigInteger.*376115185060690908522683414825349447309891933036899526770189324554358227")
e.checkNextLine(t, "String to Hex.*30303030303030303030303030303030303030303030303030303030303030303030343434333432")
e.checkNextLine(t, "String to Base64.*MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDQ0NDM0Mg==")
})
t.Run("public key", func(t *testing.T) {
pub := "02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2"
e := newTestVMCLI(t)
e.runProg(t, "parse "+pub)
e.checkNextLine(t, "Public key to BE ScriptHash.*ee9ea22c27e34bd0148fc4108e08f74e8f5048b2")
e.checkNextLine(t, "Public key to LE ScriptHash.*b248508f4ef7088e10c48f14d04be3272ca29eee")
e.checkNextLine(t, "Public key to Address.*Nhfg3TbpwogLvDGVvAvqyThbsHgoSUKwtn")
e.checkNextLine(t, "Hex to String")
e.checkNextLine(t, "Hex to Integer.*-7115107707948693452214836319400158580475150561081357074343221218306172781415678")
e.checkNextLine(t, "Swap Endianness.*c28d7fbfc4bb74d7a76f0496b87d6b203f754c5fed8ac517e3df7b01f42b62b302")
e.checkNextLine(t, "String to Hex.*303262333632326266343031376264666533313763353861656435663463373533663230366237646238393630343666613764373734626263346266376638646332")
e.checkNextLine(t, "String to Base64.*MDJiMzYyMmJmNDAxN2JkZmUzMTdjNThhZWQ1ZjRjNzUzZjIwNmI3ZGI4OTYwNDZmYTdkNzc0YmJjNGJmN2Y4ZGMy")
})
t.Run("base64", func(t *testing.T) {
e := newTestVMCLI(t)
u := random.Uint160()
e.runProg(t, "parse "+base64.StdEncoding.EncodeToString(u.BytesBE()))
e.checkNextLine(t, "Base64 to String\\s+")
e.checkNextLine(t, "Base64 to BigInteger\\s+")
e.checkNextLine(t, "Base64 to BE ScriptHash\\s+"+u.StringBE())
e.checkNextLine(t, "Base64 to LE ScriptHash\\s+"+u.StringLE())
e.checkNextLine(t, "Base64 to Address \\(BE\\)\\s+"+address.Uint160ToString(u))
e.checkNextLine(t, "Base64 to Address \\(LE\\)\\s+"+address.Uint160ToString(u.Reverse()))
e.checkNextLine(t, "String to Hex\\s+")
e.checkNextLine(t, "String to Base64\\s+")
})
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}
func TestPrintLogo(t *testing.T) {
e := newTestVMCLIWithLogo(t, true)
e.runProg(t)
require.True(t, strings.HasPrefix(e.out.String(), logo))
require.False(t, e.exit.Load())
}
func TestExit(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t, "exit")
require.True(t, e.exit.Load())
}