opencode/packages/tui/input/key_test.go
2025-07-25 20:20:01 -04:00

880 lines
19 KiB
Go

package input
import (
"bytes"
"context"
"errors"
"flag"
"fmt"
"image/color"
"io"
"math/rand"
"reflect"
"regexp"
"runtime"
"sort"
"strings"
"sync"
"testing"
"time"
"github.com/charmbracelet/x/ansi"
"github.com/charmbracelet/x/ansi/kitty"
)
var sequences = buildKeysTable(FlagTerminfo, "dumb")
func TestKeyString(t *testing.T) {
t.Run("alt+space", func(t *testing.T) {
k := KeyPressEvent{Code: KeySpace, Mod: ModAlt}
if got := k.String(); got != "alt+space" {
t.Fatalf(`expected a "alt+space", got %q`, got)
}
})
t.Run("runes", func(t *testing.T) {
k := KeyPressEvent{Code: 'a', Text: "a"}
if got := k.String(); got != "a" {
t.Fatalf(`expected an "a", got %q`, got)
}
})
t.Run("invalid", func(t *testing.T) {
k := KeyPressEvent{Code: 99999}
if got := k.String(); got != "𘚟" {
t.Fatalf(`expected a "unknown", got %q`, got)
}
})
t.Run("space", func(t *testing.T) {
k := KeyPressEvent{Code: KeySpace, Text: " "}
if got := k.String(); got != "space" {
t.Fatalf(`expected a "space", got %q`, got)
}
})
t.Run("shift+space", func(t *testing.T) {
k := KeyPressEvent{Code: KeySpace, Mod: ModShift}
if got := k.String(); got != "shift+space" {
t.Fatalf(`expected a "shift+space", got %q`, got)
}
})
t.Run("?", func(t *testing.T) {
k := KeyPressEvent{Code: '/', Mod: ModShift, Text: "?"}
if got := k.String(); got != "?" {
t.Fatalf(`expected a "?", got %q`, got)
}
})
}
type seqTest struct {
seq []byte
Events []Event
}
var f3CurPosRegexp = regexp.MustCompile(`\x1b\[1;(\d+)R`)
// buildBaseSeqTests returns sequence tests that are valid for the
// detectSequence() function.
func buildBaseSeqTests() []seqTest {
td := []seqTest{}
for seq, key := range sequences {
k := KeyPressEvent(key)
st := seqTest{seq: []byte(seq), Events: []Event{k}}
// XXX: This is a special case to handle F3 key sequence and cursor
// position report having the same sequence. See [parseCsi] for more
// information.
if f3CurPosRegexp.MatchString(seq) {
st.Events = []Event{k, CursorPositionEvent{Y: 0, X: int(key.Mod)}}
}
td = append(td, st)
}
// Additional special cases.
td = append(td,
// Unrecognized CSI sequence.
seqTest{
[]byte{'\x1b', '[', '-', '-', '-', '-', 'X'},
[]Event{
UnknownEvent([]byte{'\x1b', '[', '-', '-', '-', '-', 'X'}),
},
},
// A lone space character.
seqTest{
[]byte{' '},
[]Event{
KeyPressEvent{Code: KeySpace, Text: " "},
},
},
// An escape character with the alt modifier.
seqTest{
[]byte{'\x1b', ' '},
[]Event{
KeyPressEvent{Code: KeySpace, Mod: ModAlt},
},
},
)
return td
}
func TestParseSequence(t *testing.T) {
td := buildBaseSeqTests()
td = append(td,
// Background color.
seqTest{
[]byte("\x1b]11;rgb:1234/1234/1234\x07"),
[]Event{BackgroundColorEvent{
Color: color.RGBA{R: 0x12, G: 0x12, B: 0x12, A: 0xff},
}},
},
seqTest{
[]byte("\x1b]11;rgb:1234/1234/1234\x1b\\"),
[]Event{BackgroundColorEvent{
Color: color.RGBA{R: 0x12, G: 0x12, B: 0x12, A: 0xff},
}},
},
seqTest{
[]byte("\x1b]11;rgb:1234/1234/1234\x1b"), // Incomplete sequences are ignored.
[]Event{
UnknownEvent("\x1b]11;rgb:1234/1234/1234\x1b"),
},
},
// Kitty Graphics response.
seqTest{
[]byte("\x1b_Ga=t;OK\x1b\\"),
[]Event{KittyGraphicsEvent{
Options: kitty.Options{Action: kitty.Transmit},
Payload: []byte("OK"),
}},
},
seqTest{
[]byte("\x1b_Gi=99,I=13;OK\x1b\\"),
[]Event{KittyGraphicsEvent{
Options: kitty.Options{ID: 99, Number: 13},
Payload: []byte("OK"),
}},
},
seqTest{
[]byte("\x1b_Gi=1337,q=1;EINVAL:your face\x1b\\"),
[]Event{KittyGraphicsEvent{
Options: kitty.Options{ID: 1337, Quite: 1},
Payload: []byte("EINVAL:your face"),
}},
},
// Xterm modifyOtherKeys CSI 27 ; <modifier> ; <code> ~
seqTest{
[]byte("\x1b[27;3;20320~"),
[]Event{KeyPressEvent{Code: '你', Mod: ModAlt}},
},
seqTest{
[]byte("\x1b[27;3;65~"),
[]Event{KeyPressEvent{Code: 'A', Mod: ModAlt}},
},
seqTest{
[]byte("\x1b[27;3;8~"),
[]Event{KeyPressEvent{Code: KeyBackspace, Mod: ModAlt}},
},
seqTest{
[]byte("\x1b[27;3;27~"),
[]Event{KeyPressEvent{Code: KeyEscape, Mod: ModAlt}},
},
seqTest{
[]byte("\x1b[27;3;127~"),
[]Event{KeyPressEvent{Code: KeyBackspace, Mod: ModAlt}},
},
// Xterm report window text area size.
seqTest{
[]byte("\x1b[4;24;80t"),
[]Event{
WindowOpEvent{Op: 4, Args: []int{24, 80}},
},
},
// Kitty keyboard / CSI u (fixterms)
seqTest{
[]byte("\x1b[1B"),
[]Event{KeyPressEvent{Code: KeyDown}},
},
seqTest{
[]byte("\x1b[1;B"),
[]Event{KeyPressEvent{Code: KeyDown}},
},
seqTest{
[]byte("\x1b[1;4B"),
[]Event{KeyPressEvent{Mod: ModShift | ModAlt, Code: KeyDown}},
},
seqTest{
[]byte("\x1b[1;4:1B"),
[]Event{KeyPressEvent{Mod: ModShift | ModAlt, Code: KeyDown}},
},
seqTest{
[]byte("\x1b[1;4:2B"),
[]Event{KeyPressEvent{Mod: ModShift | ModAlt, Code: KeyDown, IsRepeat: true}},
},
seqTest{
[]byte("\x1b[1;4:3B"),
[]Event{KeyReleaseEvent{Mod: ModShift | ModAlt, Code: KeyDown}},
},
seqTest{
[]byte("\x1b[8~"),
[]Event{KeyPressEvent{Code: KeyEnd}},
},
seqTest{
[]byte("\x1b[8;~"),
[]Event{KeyPressEvent{Code: KeyEnd}},
},
seqTest{
[]byte("\x1b[8;10~"),
[]Event{KeyPressEvent{Mod: ModShift | ModMeta, Code: KeyEnd}},
},
seqTest{
[]byte("\x1b[27;4u"),
[]Event{KeyPressEvent{Mod: ModShift | ModAlt, Code: KeyEscape}},
},
seqTest{
[]byte("\x1b[127;4u"),
[]Event{KeyPressEvent{Mod: ModShift | ModAlt, Code: KeyBackspace}},
},
seqTest{
[]byte("\x1b[57358;4u"),
[]Event{KeyPressEvent{Mod: ModShift | ModAlt, Code: KeyCapsLock}},
},
seqTest{
[]byte("\x1b[9;2u"),
[]Event{KeyPressEvent{Mod: ModShift, Code: KeyTab}},
},
seqTest{
[]byte("\x1b[195;u"),
[]Event{KeyPressEvent{Text: "Ã", Code: 'Ã'}},
},
seqTest{
[]byte("\x1b[20320;2u"),
[]Event{KeyPressEvent{Text: "你", Mod: ModShift, Code: '你'}},
},
seqTest{
[]byte("\x1b[195;:1u"),
[]Event{KeyPressEvent{Text: "Ã", Code: 'Ã'}},
},
seqTest{
[]byte("\x1b[195;2:3u"),
[]Event{KeyReleaseEvent{Code: 'Ã', Text: "Ã", Mod: ModShift}},
},
seqTest{
[]byte("\x1b[195;2:2u"),
[]Event{KeyPressEvent{Code: 'Ã', Text: "Ã", IsRepeat: true, Mod: ModShift}},
},
seqTest{
[]byte("\x1b[195;2:1u"),
[]Event{KeyPressEvent{Code: 'Ã', Text: "Ã", Mod: ModShift}},
},
seqTest{
[]byte("\x1b[195;2:3u"),
[]Event{KeyReleaseEvent{Code: 'Ã', Text: "Ã", Mod: ModShift}},
},
seqTest{
[]byte("\x1b[97;2;65u"),
[]Event{KeyPressEvent{Code: 'a', Text: "A", Mod: ModShift}},
},
seqTest{
[]byte("\x1b[97;;229u"),
[]Event{KeyPressEvent{Code: 'a', Text: "å"}},
},
// focus/blur
seqTest{
[]byte{'\x1b', '[', 'I'},
[]Event{
FocusEvent{},
},
},
seqTest{
[]byte{'\x1b', '[', 'O'},
[]Event{
BlurEvent{},
},
},
// Mouse event.
seqTest{
[]byte{'\x1b', '[', 'M', byte(32) + 0b0100_0000, byte(65), byte(49)},
[]Event{
MouseWheelEvent{X: 32, Y: 16, Button: MouseWheelUp},
},
},
// SGR Mouse event.
seqTest{
[]byte("\x1b[<0;33;17M"),
[]Event{
MouseClickEvent{X: 32, Y: 16, Button: MouseLeft},
},
},
// Runes.
seqTest{
[]byte{'a'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
},
},
seqTest{
[]byte{'\x1b', 'a'},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModAlt},
},
},
seqTest{
[]byte{'a', 'a', 'a'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
KeyPressEvent{Code: 'a', Text: "a"},
KeyPressEvent{Code: 'a', Text: "a"},
},
},
// Multi-byte rune.
seqTest{
[]byte("☃"),
[]Event{
KeyPressEvent{Code: '☃', Text: "☃"},
},
},
seqTest{
[]byte("\x1b☃"),
[]Event{
KeyPressEvent{Code: '☃', Mod: ModAlt},
},
},
// Standalone control characters.
seqTest{
[]byte{'\x1b'},
[]Event{
KeyPressEvent{Code: KeyEscape},
},
},
seqTest{
[]byte{ansi.SOH},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModCtrl},
},
},
seqTest{
[]byte{'\x1b', ansi.SOH},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModCtrl | ModAlt},
},
},
seqTest{
[]byte{ansi.NUL},
[]Event{
KeyPressEvent{Code: KeySpace, Mod: ModCtrl},
},
},
seqTest{
[]byte{'\x1b', ansi.NUL},
[]Event{
KeyPressEvent{Code: KeySpace, Mod: ModCtrl | ModAlt},
},
},
// C1 control characters.
seqTest{
[]byte{'\x80'},
[]Event{
KeyPressEvent{Code: rune(0x80 - '@'), Mod: ModCtrl | ModAlt},
},
},
)
if runtime.GOOS != "windows" {
// Sadly, utf8.DecodeRune([]byte(0xfe)) returns a valid rune on windows.
// This is incorrect, but it makes our test fail if we try it out.
td = append(td, seqTest{
[]byte{'\xfe'},
[]Event{
UnknownEvent(rune(0xfe)),
},
})
}
var p Parser
for _, tc := range td {
t.Run(fmt.Sprintf("%q", string(tc.seq)), func(t *testing.T) {
var events []Event
buf := tc.seq
for len(buf) > 0 {
width, Event := p.parseSequence(buf)
switch Event := Event.(type) {
case MultiEvent:
events = append(events, Event...)
default:
events = append(events, Event)
}
buf = buf[width:]
}
if !reflect.DeepEqual(tc.Events, events) {
t.Errorf("\nexpected event for %q:\n %#v\ngot:\n %#v", tc.seq, tc.Events, events)
}
})
}
}
func TestReadLongInput(t *testing.T) {
expect := make([]Event, 1000)
for i := range 1000 {
expect[i] = KeyPressEvent{Code: 'a', Text: "a"}
}
input := strings.Repeat("a", 1000)
drv, err := NewReader(strings.NewReader(input), "dumb", 0)
if err != nil {
t.Fatalf("unexpected input driver error: %v", err)
}
var Events []Event
for {
events, err := drv.ReadEvents()
if err == io.EOF {
break
}
if err != nil {
t.Fatalf("unexpected input error: %v", err)
}
Events = append(Events, events...)
}
if !reflect.DeepEqual(expect, Events) {
t.Errorf("unexpected messages, expected:\n %+v\ngot:\n %+v", expect, Events)
}
}
func TestReadInput(t *testing.T) {
type test struct {
keyname string
in []byte
out []Event
}
testData := []test{
{
"a",
[]byte{'a'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
},
},
{
"space",
[]byte{' '},
[]Event{
KeyPressEvent{Code: KeySpace, Text: " "},
},
},
{
"a alt+a",
[]byte{'a', '\x1b', 'a'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
KeyPressEvent{Code: 'a', Mod: ModAlt},
},
},
{
"a alt+a a",
[]byte{'a', '\x1b', 'a', 'a'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
KeyPressEvent{Code: 'a', Mod: ModAlt},
KeyPressEvent{Code: 'a', Text: "a"},
},
},
{
"ctrl+a",
[]byte{byte(ansi.SOH)},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModCtrl},
},
},
{
"ctrl+a ctrl+b",
[]byte{byte(ansi.SOH), byte(ansi.STX)},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModCtrl},
KeyPressEvent{Code: 'b', Mod: ModCtrl},
},
},
{
"alt+a",
[]byte{byte(0x1b), 'a'},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModAlt},
},
},
{
"a b c d",
[]byte{'a', 'b', 'c', 'd'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
KeyPressEvent{Code: 'b', Text: "b"},
KeyPressEvent{Code: 'c', Text: "c"},
KeyPressEvent{Code: 'd', Text: "d"},
},
},
{
"up",
[]byte("\x1b[A"),
[]Event{
KeyPressEvent{Code: KeyUp},
},
},
{
"wheel up",
[]byte{'\x1b', '[', 'M', byte(32) + 0b0100_0000, byte(65), byte(49)},
[]Event{
MouseWheelEvent{X: 32, Y: 16, Button: MouseWheelUp},
},
},
{
"left motion release",
[]byte{
'\x1b', '[', 'M', byte(32) + 0b0010_0000, byte(32 + 33), byte(16 + 33),
'\x1b', '[', 'M', byte(32) + 0b0000_0011, byte(64 + 33), byte(32 + 33),
},
[]Event{
MouseMotionEvent{X: 32, Y: 16, Button: MouseLeft},
MouseReleaseEvent{X: 64, Y: 32, Button: MouseNone},
},
},
{
"shift+tab",
[]byte{'\x1b', '[', 'Z'},
[]Event{
KeyPressEvent{Code: KeyTab, Mod: ModShift},
},
},
{
"enter",
[]byte{'\r'},
[]Event{KeyPressEvent{Code: KeyEnter}},
},
{
"alt+enter",
[]byte{'\x1b', '\r'},
[]Event{
KeyPressEvent{Code: KeyEnter, Mod: ModAlt},
},
},
{
"insert",
[]byte{'\x1b', '[', '2', '~'},
[]Event{
KeyPressEvent{Code: KeyInsert},
},
},
{
"ctrl+alt+a",
[]byte{'\x1b', byte(ansi.SOH)},
[]Event{
KeyPressEvent{Code: 'a', Mod: ModCtrl | ModAlt},
},
},
{
"CSI?----X?",
[]byte{'\x1b', '[', '-', '-', '-', '-', 'X'},
[]Event{UnknownEvent([]byte{'\x1b', '[', '-', '-', '-', '-', 'X'})},
},
// Powershell sequences.
{
"up",
[]byte{'\x1b', 'O', 'A'},
[]Event{KeyPressEvent{Code: KeyUp}},
},
{
"down",
[]byte{'\x1b', 'O', 'B'},
[]Event{KeyPressEvent{Code: KeyDown}},
},
{
"right",
[]byte{'\x1b', 'O', 'C'},
[]Event{KeyPressEvent{Code: KeyRight}},
},
{
"left",
[]byte{'\x1b', 'O', 'D'},
[]Event{KeyPressEvent{Code: KeyLeft}},
},
{
"alt+enter",
[]byte{'\x1b', '\x0d'},
[]Event{KeyPressEvent{Code: KeyEnter, Mod: ModAlt}},
},
{
"alt+backspace",
[]byte{'\x1b', '\x7f'},
[]Event{KeyPressEvent{Code: KeyBackspace, Mod: ModAlt}},
},
{
"ctrl+space",
[]byte{'\x00'},
[]Event{KeyPressEvent{Code: KeySpace, Mod: ModCtrl}},
},
{
"ctrl+alt+space",
[]byte{'\x1b', '\x00'},
[]Event{KeyPressEvent{Code: KeySpace, Mod: ModCtrl | ModAlt}},
},
{
"esc",
[]byte{'\x1b'},
[]Event{KeyPressEvent{Code: KeyEscape}},
},
{
"alt+esc",
[]byte{'\x1b', '\x1b'},
[]Event{KeyPressEvent{Code: KeyEscape, Mod: ModAlt}},
},
{
"a b o",
[]byte{
'\x1b', '[', '2', '0', '0', '~',
'a', ' ', 'b',
'\x1b', '[', '2', '0', '1', '~',
'o',
},
[]Event{
PasteStartEvent{},
PasteEvent("a b"),
PasteEndEvent{},
KeyPressEvent{Code: 'o', Text: "o"},
},
},
{
"a\x03\nb",
[]byte{
'\x1b', '[', '2', '0', '0', '~',
'a', '\x03', '\n', 'b',
'\x1b', '[', '2', '0', '1', '~',
},
[]Event{
PasteStartEvent{},
PasteEvent("a\x03\nb"),
PasteEndEvent{},
},
},
{
"?0xfe?",
[]byte{'\xfe'},
[]Event{
UnknownEvent(rune(0xfe)),
},
},
{
"a ?0xfe? b",
[]byte{'a', '\xfe', ' ', 'b'},
[]Event{
KeyPressEvent{Code: 'a', Text: "a"},
UnknownEvent(rune(0xfe)),
KeyPressEvent{Code: KeySpace, Text: " "},
KeyPressEvent{Code: 'b', Text: "b"},
},
},
}
for i, td := range testData {
t.Run(fmt.Sprintf("%d: %s", i, td.keyname), func(t *testing.T) {
Events := testReadInputs(t, bytes.NewReader(td.in))
var buf strings.Builder
for i, Event := range Events {
if i > 0 {
buf.WriteByte(' ')
}
if s, ok := Event.(fmt.Stringer); ok {
buf.WriteString(s.String())
} else {
fmt.Fprintf(&buf, "%#v:%T", Event, Event)
}
}
if len(Events) != len(td.out) {
t.Fatalf("unexpected message list length: got %d, expected %d\n got: %#v\n expected: %#v\n", len(Events), len(td.out), Events, td.out)
}
if !reflect.DeepEqual(td.out, Events) {
t.Fatalf("expected:\n%#v\ngot:\n%#v", td.out, Events)
}
})
}
}
func testReadInputs(t *testing.T, input io.Reader) []Event {
// We'll check that the input reader finishes at the end
// without error.
var wg sync.WaitGroup
var inputErr error
ctx, cancel := context.WithCancel(context.Background())
defer func() {
cancel()
wg.Wait()
if inputErr != nil && !errors.Is(inputErr, io.EOF) {
t.Fatalf("unexpected input error: %v", inputErr)
}
}()
dr, err := NewReader(input, "dumb", 0)
if err != nil {
t.Fatalf("unexpected input driver error: %v", err)
}
// The messages we're consuming.
EventsC := make(chan Event)
// Start the reader in the background.
wg.Add(1)
go func() {
defer wg.Done()
var events []Event
events, inputErr = dr.ReadEvents()
out:
for _, ev := range events {
select {
case EventsC <- ev:
case <-ctx.Done():
break out
}
}
EventsC <- nil
}()
var Events []Event
loop:
for {
select {
case Event := <-EventsC:
if Event == nil {
// end of input marker for the test.
break loop
}
Events = append(Events, Event)
case <-time.After(2 * time.Second):
t.Errorf("timeout waiting for input event")
break loop
}
}
return Events
}
// randTest defines the test input and expected output for a sequence
// of interleaved control sequences and control characters.
type randTest struct {
data []byte
lengths []int
names []string
}
// seed is the random seed to randomize the input. This helps check
// that all the sequences get ultimately exercised.
var seed = flag.Int64("seed", 0, "random seed (0 to autoselect)")
// genRandomData generates a randomized test, with a random seed unless
// the seed flag was set.
func genRandomData(logfn func(int64), length int) randTest {
// We'll use a random source. However, we give the user the option
// to override it to a specific value for reproducibility.
s := *seed
if s == 0 {
s = time.Now().UnixNano()
}
// Inform the user so they know what to reuse to get the same data.
logfn(s)
return genRandomDataWithSeed(s, length)
}
// genRandomDataWithSeed generates a randomized test with a fixed seed.
func genRandomDataWithSeed(s int64, length int) randTest {
src := rand.NewSource(s)
r := rand.New(src)
// allseqs contains all the sequences, in sorted order. We sort
// to make the test deterministic (when the seed is also fixed).
type seqpair struct {
seq string
name string
}
var allseqs []seqpair
for seq, key := range sequences {
allseqs = append(allseqs, seqpair{seq, key.String()})
}
sort.Slice(allseqs, func(i, j int) bool { return allseqs[i].seq < allseqs[j].seq })
// res contains the computed test.
var res randTest
for len(res.data) < length {
alt := r.Intn(2)
prefix := ""
esclen := 0
if alt == 1 {
prefix = "alt+"
esclen = 1
}
kind := r.Intn(3)
switch kind {
case 0:
// A control character.
if alt == 1 {
res.data = append(res.data, '\x1b')
}
res.data = append(res.data, 1)
res.names = append(res.names, "ctrl+"+prefix+"a")
res.lengths = append(res.lengths, 1+esclen)
case 1, 2:
// A sequence.
seqi := r.Intn(len(allseqs))
s := allseqs[seqi]
if strings.Contains(s.name, "alt+") || strings.Contains(s.name, "meta+") {
esclen = 0
prefix = ""
alt = 0
}
if alt == 1 {
res.data = append(res.data, '\x1b')
}
res.data = append(res.data, s.seq...)
if strings.HasPrefix(s.name, "ctrl+") {
prefix = "ctrl+" + prefix
}
name := prefix + strings.TrimPrefix(s.name, "ctrl+")
res.names = append(res.names, name)
res.lengths = append(res.lengths, len(s.seq)+esclen)
}
}
return res
}
func FuzzParseSequence(f *testing.F) {
var p Parser
for seq := range sequences {
f.Add(seq)
}
f.Add("\x1b]52;?\x07") // OSC 52
f.Add("\x1b]11;rgb:0000/0000/0000\x1b\\") // OSC 11
f.Add("\x1bP>|charm terminal(0.1.2)\x1b\\") // DCS (XTVERSION)
f.Add("\x1b_Gi=123\x1b\\") // APC
f.Fuzz(func(t *testing.T, seq string) {
n, _ := p.parseSequence([]byte(seq))
if n == 0 && seq != "" {
t.Errorf("expected a non-zero width for %q", seq)
}
})
}
// BenchmarkDetectSequenceMap benchmarks the map-based sequence
// detector.
func BenchmarkDetectSequenceMap(b *testing.B) {
var p Parser
td := genRandomDataWithSeed(123, 10000)
for i := 0; i < b.N; i++ {
for j, w := 0, 0; j < len(td.data); j += w {
w, _ = p.parseSequence(td.data[j:])
}
}
}