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key_test.go
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key_test.go
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package tea
import (
"bytes"
"fmt"
"testing"
)
func TestKeyString(t *testing.T) {
t.Run("alt+space", func(t *testing.T) {
if got := KeyMsg(Key{
Type: KeySpace,
Alt: true,
}).String(); got != "alt+ " {
t.Fatalf(`expected a "alt+ ", got %q`, got)
}
})
t.Run("runes", func(t *testing.T) {
if got := KeyMsg(Key{
Type: KeyRunes,
Runes: []rune{'a'},
}).String(); got != "a" {
t.Fatalf(`expected an "a", got %q`, got)
}
})
t.Run("invalid", func(t *testing.T) {
if got := KeyMsg(Key{
Type: KeyType(99999),
}).String(); got != "" {
t.Fatalf(`expected a "", got %q`, got)
}
})
}
func TestKeyTypeString(t *testing.T) {
t.Run("space", func(t *testing.T) {
if got := KeySpace.String(); got != " " {
t.Fatalf(`expected a " ", got %q`, got)
}
})
t.Run("invalid", func(t *testing.T) {
if got := KeyType(99999).String(); got != "" {
t.Fatalf(`expected a "", got %q`, got)
}
})
}
func TestReadInput(t *testing.T) {
type test struct {
keyname string
in []byte
out []Msg
}
for i, td := range []test{
{"a",
[]byte{'a'},
[]Msg{
KeyMsg{
Type: KeyRunes,
Runes: []rune{'a'},
},
},
},
{" ",
[]byte{' '},
[]Msg{
KeyMsg{
Type: KeySpace,
Runes: []rune{' '},
},
},
},
{"ctrl+a",
[]byte{byte(keySOH)},
[]Msg{
KeyMsg{
Type: KeyCtrlA,
},
},
},
{"alt+a",
[]byte{byte(0x1b), 'a'},
[]Msg{
KeyMsg{
Type: KeyRunes,
Alt: true,
Runes: []rune{'a'},
},
},
},
{"abcd",
[]byte{'a', 'b', 'c', 'd'},
[]Msg{
KeyMsg{
Type: KeyRunes,
Runes: []rune{'a'},
},
KeyMsg{
Type: KeyRunes,
Runes: []rune{'b'},
},
KeyMsg{
Type: KeyRunes,
Runes: []rune{'c'},
},
KeyMsg{
Type: KeyRunes,
Runes: []rune{'d'},
},
},
},
{"up",
[]byte("\x1b[A"),
[]Msg{
KeyMsg{
Type: KeyUp,
},
},
},
{"wheel up",
[]byte{'\x1b', '[', 'M', byte(32) + 0b0100_0000, byte(65), byte(49)},
[]Msg{
MouseMsg{
Type: MouseWheelUp,
},
},
},
{"shift+tab",
[]byte{'\x1b', '[', 'Z'},
[]Msg{
KeyMsg{
Type: KeyShiftTab,
},
},
},
{"alt+enter",
[]byte{'\x1b', '\r'},
[]Msg{
KeyMsg{
Type: KeyEnter,
Alt: true,
},
},
},
{"insert",
[]byte{'\x1b', '[', '2', '~'},
[]Msg{
KeyMsg{
Type: KeyInsert,
},
},
},
{"alt+ctrl+a",
[]byte{'\x1b', byte(keySOH)},
[]Msg{
KeyMsg{
Type: KeyCtrlA,
Alt: true,
},
},
},
{"unrecognized CSI",
[]byte{'\x1b', '[', '-', '-', '-', '-', 'X'},
[]Msg{},
},
// Powershell sequences.
{"up",
[]byte{'\x1b', 'O', 'A'},
[]Msg{KeyMsg{Type: KeyUp}},
},
{"down",
[]byte{'\x1b', 'O', 'B'},
[]Msg{KeyMsg{Type: KeyDown}},
},
{"right",
[]byte{'\x1b', 'O', 'C'},
[]Msg{KeyMsg{Type: KeyRight}},
},
{"left",
[]byte{'\x1b', 'O', 'D'},
[]Msg{KeyMsg{Type: KeyLeft}},
},
{"alt+enter",
[]byte{'\x1b', '\x0d'},
[]Msg{KeyMsg{Type: KeyEnter, Alt: true}},
},
{"alt+backspace",
[]byte{'\x1b', '\x7f'},
[]Msg{KeyMsg{Type: KeyBackspace, Alt: true}},
},
} {
t.Run(fmt.Sprintf("%d: %s", i, td.keyname), func(t *testing.T) {
msgs, err := readInputs(bytes.NewReader(td.in))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if len(msgs) != len(td.out) {
t.Fatalf("unexpected message list length")
}
if len(msgs) == 1 {
if m, ok := msgs[0].(KeyMsg); ok && m.String() != td.keyname {
t.Fatalf(`expected a keymsg %q, got %q`, td.keyname, m)
}
}
for i, v := range msgs {
if m, ok := v.(KeyMsg); ok &&
m.String() != td.out[i].(KeyMsg).String() {
t.Fatalf(`expected a keymsg %q, got %q`, td.out[i].(KeyMsg), m)
}
if m, ok := v.(MouseMsg); ok &&
(mouseEventTypes[m.Type] != td.keyname || m.Type != td.out[i].(MouseMsg).Type) {
t.Fatalf(`expected a mousemsg %q, got %q`,
td.keyname,
mouseEventTypes[td.out[i].(MouseMsg).Type])
}
}
})
}
}