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|
package tui
import (
"strings"
"testing"
"unicode/utf8"
)
func TestTextArea_SetText_UsesRuneCursorPosition(t *testing.T) {
ta := NewTextArea()
ta.BindApp(testApp)
ta.SetText("a界")
if got := ta.cursorPos.Get(); got != 2 {
t.Fatalf("cursorPos = %d, want 2", got)
}
}
func TestTextArea_Edit_MultibyteRunes(t *testing.T) {
ta := NewTextArea()
ta.BindApp(testApp)
ta.SetText("a界")
ta.cursorPos.Set(1)
ta.insertChar(KeyEvent{Key: KeyRune, Rune: '🙂'})
if got := ta.Text(); got != "a🙂界" {
t.Fatalf("text after insert = %q, want %q", got, "a🙂界")
}
ta.backspace(KeyEvent{Key: KeyBackspace})
if got := ta.Text(); got != "a界" {
t.Fatalf("text after backspace = %q, want %q", got, "a界")
}
ta.delete(KeyEvent{Key: KeyDelete})
if got := ta.Text(); got != "a" {
t.Fatalf("text after delete = %q, want %q", got, "a")
}
}
func TestTextArea_MoveRight_UsesRuneLength(t *testing.T) {
ta := NewTextArea()
ta.BindApp(testApp)
ta.SetText("é界")
ta.cursorPos.Set(0)
ta.moveRight(KeyEvent{Key: KeyRight})
ta.moveRight(KeyEvent{Key: KeyRight})
ta.moveRight(KeyEvent{Key: KeyRight})
if got := ta.cursorPos.Get(); got != 2 {
t.Fatalf("cursorPos = %d, want 2", got)
}
}
func TestTextArea_WrapText_DisplayWidth(t *testing.T) {
type tc struct {
width int
border BorderStyle
text string
want []string
}
tests := map[string]tc{
"ascii wraps at width": {
width: 10,
text: "abcdefghijklmnop",
want: []string{"abcdefghij", "klmnop"},
},
"cjk wraps at display columns not rune count": {
width: 10,
text: "一二三四五六七八九十",
want: []string{"一二三四五", "六七八九十"},
},
"mixed ascii and cjk": {
width: 10,
text: "ab界cd界ef界",
want: []string{"ab界cd界ef", "界"},
},
"wide char that does not fit moves to next line": {
width: 5,
text: "ab界界",
want: []string{"ab界", "界"},
},
"border reduces wrap width by two": {
width: 10,
border: BorderSingle,
text: "abcdefghijklmnop",
want: []string{"abcdefgh", "ijklmnop"},
},
"embedded newlines preserved": {
width: 10,
text: "一二三\n\nab",
want: []string{"一二三", "", "ab"},
},
"emoji wraps at display columns": {
width: 5,
text: "🎉🎉🎉",
want: []string{"🎉🎉", "🎉"},
},
"rune wider than wrap width gets its own line": {
width: 3,
border: BorderSingle,
text: "界界",
want: []string{"界", "界"},
},
"zero width disables wrapping": {
width: 0,
text: "abcdef\ngh",
want: []string{"abcdef", "gh"},
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
opts := []TextAreaOption{WithTextAreaWidth(tt.width)}
if tt.border != BorderNone {
opts = append(opts, WithTextAreaBorder(tt.border))
}
ta := NewTextArea(opts...)
ta.BindApp(testApp)
ta.SetText(tt.text)
lines := ta.wrapText()
if len(lines) != len(tt.want) {
t.Fatalf("wrapText() = %q, want %q", lines, tt.want)
}
for i := range lines {
if lines[i] != tt.want[i] {
t.Fatalf("wrapText()[%d] = %q, want %q", i, lines[i], tt.want[i])
}
}
})
}
}
func TestTextArea_CursorRowCol_WideChars(t *testing.T) {
type tc struct {
pos int
wantRow int
wantCol int
}
tests := map[string]tc{
"start of text": {pos: 0, wantRow: 0, wantCol: 0},
"soft wrap boundary": {pos: 5, wantRow: 1, wantCol: 0},
"after first rune of second": {pos: 6, wantRow: 1, wantCol: 1},
"end of text": {pos: 10, wantRow: 2, wantCol: 0},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ta := NewTextArea(WithTextAreaWidth(10))
ta.BindApp(testApp)
ta.SetText("一二三四五六七八九十")
ta.cursorPos.Set(tt.pos)
row, col := ta.cursorRowCol(ta.wrapText())
if row != tt.wantRow || col != tt.wantCol {
t.Fatalf("cursorRowCol() = (%d, %d), want (%d, %d)", row, col, tt.wantRow, tt.wantCol)
}
})
}
}
func renderedRows(t *testing.T, c Component, width int) []string {
t.Helper()
buf, height := renderElementToBuffer(c.Render(testApp), width, Capabilities{})
if buf == nil {
t.Fatal("renderElementToBuffer returned nil buffer")
}
rows := make([]string, 0, height)
for y := range height {
var sb strings.Builder
for x := range width {
cell := buf.Cell(x, y)
if cell.IsContinuation() {
continue
}
if cell.Text == "" {
sb.WriteRune(' ')
} else {
sb.WriteString(cell.Text)
}
}
rows = append(rows, sb.String())
}
return rows
}
func TestTextArea_Render_NoClippedContent(t *testing.T) {
type tc struct {
width int
border BorderStyle
text string
}
tests := map[string]tc{
"cjk without border": {width: 10, text: "一二三四五六七八九十"},
"cjk with border": {width: 10, border: BorderSingle, text: "一二三四五六七八"},
"ascii with border": {width: 10, border: BorderSingle, text: "abcdefghijklmnop"},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
opts := []TextAreaOption{WithTextAreaWidth(tt.width)}
if tt.border != BorderNone {
opts = append(opts, WithTextAreaBorder(tt.border))
}
ta := NewTextArea(opts...)
ta.BindApp(testApp)
ta.SetText(tt.text)
rendered := strings.Join(renderedRows(t, ta, tt.width), "\n")
for _, r := range tt.text {
if !strings.ContainsRune(rendered, r) {
t.Errorf("rune %q clipped out of rendered output:\n%s", r, rendered)
}
}
})
}
}
func TestTextArea_CursorRowCol_WrapBoundaryAffinity(t *testing.T) {
type tc struct {
text string
width int
pos int
wantRow int
wantCol int
}
tests := map[string]tc{
"soft boundary on full line moves to next line start": {
text: "abcdefgh", width: 4, pos: 4, wantRow: 1, wantCol: 0,
},
"soft boundary on non-full line stays at line end": {
text: "ab界界", width: 5, pos: 3, wantRow: 0, wantCol: 3,
},
"hard newline after full line stays at line end": {
text: "abcd\nef", width: 4, pos: 4, wantRow: 0, wantCol: 4,
},
"end of text on full last line moves to phantom row": {
text: "abcd", width: 4, pos: 4, wantRow: 1, wantCol: 0,
},
"end of text on full cjk line moves to phantom row": {
text: "一二", width: 4, pos: 2, wantRow: 1, wantCol: 0,
},
"end of text on non-full line stays at line end": {
text: "abc", width: 4, pos: 3, wantRow: 0, wantCol: 3,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ta := NewTextArea(WithTextAreaWidth(tt.width))
ta.BindApp(testApp)
ta.SetText(tt.text)
ta.cursorPos.Set(tt.pos)
row, col := ta.cursorRowCol(ta.wrapText())
if row != tt.wantRow || col != tt.wantCol {
t.Fatalf("cursorRowCol() = (%d, %d), want (%d, %d)", row, col, tt.wantRow, tt.wantCol)
}
})
}
}
func TestTextArea_Move_WrapBoundary(t *testing.T) {
type tc struct {
text string
width int
pos int
move func(*TextArea)
wantPos int
}
tests := map[string]tc{
"down from column zero crosses soft wrap": {
text: "abcdef", width: 4, pos: 0,
move: func(ta *TextArea) { ta.moveDown(KeyEvent{Key: KeyDown}) },
wantPos: 4,
},
"up from wrap boundary lands on previous line": {
text: "abcdef", width: 4, pos: 4,
move: func(ta *TextArea) { ta.moveUp(KeyEvent{Key: KeyUp}) },
wantPos: 0,
},
"end on phantom row stays at end of text": {
text: "abcd", width: 4, pos: 4,
move: func(ta *TextArea) { ta.moveEnd(KeyEvent{Key: KeyEnd}) },
wantPos: 4,
},
"home on phantom row stays at boundary": {
text: "abcd", width: 4, pos: 4,
move: func(ta *TextArea) { ta.moveHome(KeyEvent{Key: KeyHome}) },
wantPos: 4,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ta := NewTextArea(WithTextAreaWidth(tt.width))
ta.BindApp(testApp)
ta.SetText(tt.text)
ta.cursorPos.Set(tt.pos)
tt.move(ta)
if got := ta.cursorPos.Get(); got != tt.wantPos {
t.Fatalf("cursorPos after move = %d, want %d", got, tt.wantPos)
}
})
}
}
func TestTextArea_CursorVisibleAtWrapBoundary(t *testing.T) {
type tc struct {
text string
width int
pos int
wantHeight int
}
tests := map[string]tc{
"soft boundary on full line": {text: "abcdefgh", width: 4, pos: 4, wantHeight: 2},
"end of text on full last line": {text: "abcd", width: 4, pos: 4, wantHeight: 2},
"end of text on full cjk line": {text: "一二三四五", width: 10, pos: 5, wantHeight: 2},
"end of text on non-full line": {text: "abc", width: 4, pos: 3, wantHeight: 1},
"end of text after hard newline": {text: "abcd\n", width: 4, pos: 5, wantHeight: 2},
"mid-line cursor away from edges": {text: "abcdef", width: 4, pos: 2, wantHeight: 2},
"full line before hard newline": {text: "abcd\nef", width: 4, pos: 4, wantHeight: 2},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ta := NewTextArea(WithTextAreaWidth(tt.width))
ta.BindApp(testApp)
ta.SetText(tt.text)
ta.Focus()
ta.cursorPos.Set(tt.pos)
ta.blink.Set(true)
rows := renderedRows(t, ta, tt.width)
if len(rows) != tt.wantHeight {
t.Fatalf("rendered height = %d, want %d\n%s", len(rows), tt.wantHeight, strings.Join(rows, "\n"))
}
if !strings.ContainsRune(strings.Join(rows, "\n"), ta.cursorRune) {
t.Fatalf("cursor not visible in rendered output:\n%s", strings.Join(rows, "\n"))
}
})
}
}
func TestTextArea_Height_PhantomCursorRow(t *testing.T) {
ta := NewTextArea(WithTextAreaWidth(4))
ta.BindApp(testApp)
ta.SetText("abcd")
if got := ta.Height(); got != 1 {
t.Fatalf("unfocused Height() = %d, want 1", got)
}
ta.Focus()
if got := ta.Height(); got != 2 {
t.Fatalf("focused Height() = %d, want 2", got)
}
}
func TestTextArea_HideVirtualCursor(t *testing.T) {
type tc struct {
text string
cursor int
wantLen int
}
tests := map[string]tc{
"returns line unchanged": {text: "hello", cursor: 3, wantLen: 5},
"returns space on empty line": {text: "", cursor: 0, wantLen: 1},
"line width matches wrapped text": {text: "hello world", cursor: 5, wantLen: 11},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
ta := NewTextArea(
WithTextAreaVirtualCursor(false),
)
ta.BindApp(testApp)
ta.SetText(tt.text)
ta.Focus()
ta.cursorPos.Set(tt.cursor)
lines := ta.wrapText()
for i := range lines {
rendered := ta.lineWithCursor(i)
if utf8.RuneCountInString(rendered) != tt.wantLen {
t.Fatalf("lineWithCursor(%d) = %q (len=%d), want len=%d", i, rendered, utf8.RuneCountInString(rendered), tt.wantLen)
}
}
})
}
}
|