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package execclient
// import (
// "bytes"
// "io"
// "io/ioutil"
// "testing"
// "github.com/stretchr/testify/assert"
// "github.com/stretchr/testify/require"
// )
// func TestEscape(t *testing.T) {
// t.Run("closes the context when the escape sequence is seen", func(t *testing.T) {
// var buf bytes.Buffer
// buf.WriteByte('\n')
// buf.WriteByte('~')
// buf.WriteByte('.')
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: &buf}
// io.Copy(ioutil.Discard, ew)
// assert.True(t, ok, "context was not canceled")
// })
// t.Run("can see the sequence within a buffer", func(t *testing.T) {
// var buf bytes.Buffer
// buf.WriteString("hello")
// buf.WriteByte('\n')
// buf.WriteByte('~')
// buf.WriteByte('.')
// buf.WriteString("bye")
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: &buf}
// io.Copy(ioutil.Discard, ew)
// assert.True(t, ok, "context was not canceled")
// })
// t.Run("can see the sequence across reads", func(t *testing.T) {
// r, w := io.Pipe()
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: r}
// go w.Write([]byte("hello\n"))
// junk := make([]byte, 1024)
// n, err := ew.Read(junk)
// require.NoError(t, err)
// assert.Equal(t, 6, n)
// go w.Write([]byte("~."))
// n, err = ew.Read(junk)
// require.NoError(t, err)
// assert.Equal(t, 2, n)
// assert.True(t, ok, "context was not canceled")
// })
// t.Run("can see the sequence across reads split on ~ and .", func(t *testing.T) {
// r, w := io.Pipe()
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: r}
// go w.Write([]byte("hello\n~"))
// junk := make([]byte, 1024)
// n, err := ew.Read(junk)
// require.NoError(t, err)
// assert.Equal(t, 7, n)
// go w.Write([]byte("."))
// n, err = ew.Read(junk)
// require.NoError(t, err)
// assert.Equal(t, 1, n)
// assert.True(t, ok, "context was not canceled")
// })
// t.Run("resets track state after newline", func(t *testing.T) {
// var buf bytes.Buffer
// buf.WriteString("\nx~.")
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: &buf}
// io.Copy(ioutil.Discard, ew)
// assert.False(t, ok, "context was canceled")
// assert.Equal(t, escNormal, ew.state)
// })
// t.Run("resets track state after tilde", func(t *testing.T) {
// var buf bytes.Buffer
// buf.WriteString("\n~x.")
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: &buf}
// io.Copy(ioutil.Discard, ew)
// assert.False(t, ok, "context was canceled")
// assert.Equal(t, escNormal, ew.state)
// })
// t.Run("follows newlines into escape state", func(t *testing.T) {
// var buf bytes.Buffer
// buf.WriteString("\n\n~.")
// var ok bool
// cancel := func() {
// ok = true
// }
// ew := &EscapeWatcher{Cancel: cancel, Input: &buf}
// io.Copy(ioutil.Discard, ew)
// assert.True(t, ok, "context was not canceled")
// })
// }
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