450 lines
17 KiB
Go
450 lines
17 KiB
Go
package tui
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import (
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"fmt"
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"runtime"
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"slices"
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"strings"
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"testing"
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"github.com/lixenwraith/color"
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"github.com/lixenwraith/terminal"
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)
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// canvas returns a w x h region filled with th's panel
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func canvas(w, h int, th Theme) Region {
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r := NewRegion(make([]terminal.Cell, w*h), w, 0, 0, w, h)
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r.FillStyle(th.Text)
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return r
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}
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// row returns the runes of row y, trailing spaces trimmed
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func row(r Region, y int) string {
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var b strings.Builder
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for x := 0; x < r.W; x++ {
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b.WriteRune(r.Cells[y*r.TotalW+x].Rune)
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}
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return strings.TrimRight(b.String(), " ")
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}
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// A transparent background keeps the kind of the one beneath it: text drawn,
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// or a style put, on the terminal's own background or a palette color stays
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// on it
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func TestTransparentBackgroundKeepsItsKind(t *testing.T) {
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for _, panel := range []Style{MonoTheme.Text, {Bg: color.RGB{R: 4}, Attr: terminal.AttrBg256}} {
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r := canvas(4, 1, Theme{Text: panel})
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r.Text(0, 0, "ab", color.RGB{R: 1}, color.RGB{}, terminal.AttrBold)
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if c := r.Cells[0]; c.Bg != panel.Bg || c.Attrs != terminal.AttrBold|panel.Attr&terminal.AttrBgColor {
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t.Errorf("on %+v: %+v", panel, c)
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}
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if on := panel.On(Style{Attr: terminal.AttrReverse}); on.Bg != panel.Bg || on.Attr != panel.Attr|terminal.AttrReverse {
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t.Errorf("%+v on reverse: %+v", panel, on)
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}
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}
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}
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// Every widget marks its selection with a glyph, so it reads with no color
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func TestSelectionChangesAGlyph(t *testing.T) {
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for _, th := range []Theme{DefaultTheme, Theme16, MonoTheme} {
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selectionChangesAGlyph(t, th)
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}
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}
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func selectionChangesAGlyph(t *testing.T, th Theme) {
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options := NewOptionListState([]Option{{Name: "file"}, {Name: "tcp"}})
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for name, draw := range map[string]func(r Region, on bool){
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"radio": func(r Region, on bool) { r.Radio(0, 0, []string{"raw", "txt"}, map[bool]int{true: 1}[on], th) },
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"toggle": func(r Region, on bool) { r.Toggle(0, 0, on, th) },
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"field": func(r Region, on bool) { r.Field(0, 6, Field{Label: "port"}, on, th) },
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"group": func(r Region, on bool) { r.Group(0, "tls", "", on, false, th) },
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"option list": func(r Region, on bool) {
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options.Cursor = map[bool]int{true: 1}[on]
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r.OptionList(options, th)
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},
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} {
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off, on := canvas(20, 3, th), canvas(20, 3, th)
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draw(off, false)
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draw(on, true)
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if row(off, 0)+row(off, 1)+row(off, 2) == row(on, 0)+row(on, 1)+row(on, 2) {
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t.Errorf("%s: %q either way", name, row(on, 0)+"|"+row(on, 1))
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}
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}
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}
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// The 16-color theme names only ANSI colors and the terminal's own, which a
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// text console shows as it shows everything else; ThemeFor picks it
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func TestTheme16NamesOnlyANSIColors(t *testing.T) {
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ansiOrOwn := func(c color.RGB, attr, palette, own terminal.Attr, transparent bool) bool {
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return attr&own != 0 || attr&palette != 0 && c.R < 16 || transparent && c == (color.RGB{}) && attr&(palette|own) == 0
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}
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for _, s := range []Style{Theme16.Text, Theme16.Muted, Theme16.Accent, Theme16.Selected, Theme16.Input, Theme16.Cursor, Theme16.Error, Theme16.Border} {
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if !ansiOrOwn(s.Fg, s.Attr, terminal.AttrFg256, terminal.AttrFgDefault, false) || !ansiOrOwn(s.Bg, s.Attr, terminal.AttrBg256, terminal.AttrBgDefault, true) {
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t.Errorf("%+v", s)
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}
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}
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if ThemeFor(terminal.ColorMode16).Muted != Theme16.Muted || ThemeFor(terminal.ColorModeNone).Muted != MonoTheme.Muted ||
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ThemeFor(terminal.ColorModeTrueColor).Muted != DefaultTheme.Muted {
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t.Error("ThemeFor")
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}
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}
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// The option list matches name or hint regardless of case, a changed filter
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// puts the cursor on the first match, and the cursor stays on the matches
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func TestOptionListFilters(t *testing.T) {
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s := NewOptionListState([]Option{{Name: "file", Hint: "tail files"}, {Name: "Console", Hint: "stdin or stdout"},
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{Name: "tcp", Hint: "listen on TCP"}, {Name: "http", Hint: "Serve HTTP"}})
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for range 5 {
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s.HandleKey(terminal.KeyDown, 0, 0)
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}
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if i, _ := s.Chosen(); i != 3 {
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t.Fatalf("past the end: %d", i)
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}
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s.Paste("t")
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if m := s.Matches(); len(m) != 4 || s.Cursor != 0 {
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t.Fatalf("t: %v cursor %d", m, s.Cursor)
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}
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s.HandleKey(terminal.KeyDown, 0, 0)
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if s.HandleKey(terminal.KeyLeft, 0, 0); s.Cursor != 1 {
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t.Fatalf("filter cursor moved: list cursor %d", s.Cursor)
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}
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if s.HandleKey(terminal.KeyBackspace, 0, 0); s.Filter.Value() != "t" || s.Cursor != 1 {
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t.Fatalf("nothing before the filter cursor: %q cursor %d", s.Filter.Value(), s.Cursor)
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}
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s.HandleKey(terminal.KeyRight, 0, 0)
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if s.HandleKey(terminal.KeyBackspace, 0, 0); s.Filter.Value() != "" || s.Cursor != 0 {
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t.Fatalf("erased: %q cursor %d", s.Filter.Value(), s.Cursor)
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}
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for filter, want := range map[string]int{"TCP": 2, "cons": 1, "serve h": 3} {
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s.Filter.SetValue(filter)
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if m := s.Matches(); len(m) != 1 || m[0] != want {
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t.Errorf("%s: %v", filter, m)
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}
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}
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s.Filter.SetValue("udp")
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if _, ok := s.Chosen(); ok {
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t.Fatal("udp matched")
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}
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}
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// A field holds no control character, which the terminal or a file it is
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// saved to would act on: pasted line breaks and tabs become spaces, other
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// controls, pasted or typed, are dropped
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func TestFieldHoldsNoControls(t *testing.T) {
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var f TextFieldState
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f.Paste("a\x1b[31mb\r\nc\td\u009b")
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f.HandleKey(terminal.KeyRune, 0x9b, 0)
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f.HandleKey(terminal.KeyRune, 0x85, 0)
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if got := f.Value(); got != "a[31mb c d" {
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t.Fatalf("%q", got)
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}
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}
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// A field whose text the caller replaced draws and takes input without
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// panicking: the cursor stays within the text
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func TestTextInputSurvivesReplacedText(t *testing.T) {
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f := NewTextFieldState("abcdefghij")
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canvas(4, 1, DefaultTheme).TextInput(f, "", true, DefaultTheme)
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f.Text = []rune("ab")
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canvas(4, 1, DefaultTheme).TextInput(f, "", true, DefaultTheme)
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f.Cursor = 9
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f.Paste("x")
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type press struct {
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key terminal.Key
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mod terminal.Modifier
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}
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ctrl := terminal.ModCtrl
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for cursor, keys := range map[int][]press{
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9: {{terminal.KeyBackspace, 0}, {terminal.KeyCtrlW, 0}, {terminal.KeyCtrlU, 0}, {terminal.KeyLeft, ctrl}, {terminal.KeyRight, 0}},
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-1: {{terminal.KeyDelete, 0}, {terminal.KeyDelete, ctrl}, {terminal.KeyRight, ctrl}, {terminal.KeyLeft, 0}, {terminal.KeyCtrlK, 0}},
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} {
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for _, k := range keys {
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f.Text, f.Cursor = []rune("a b"), cursor
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f.HandleKey(k.key, 0, k.mod)
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}
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}
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f.Text, f.Cursor = []rune("a b"), -1
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f.HandleKey(terminal.KeyCtrlK, 0, 0)
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if got := f.Value(); got != "" {
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t.Fatalf("%q", got)
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}
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}
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// A typed field takes only its runes, typed or pasted
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func TestTypedFieldTakesItsRunes(t *testing.T) {
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f := TextFieldState{Accept: AcceptInteger}
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for _, r := range "4a2" {
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f.HandleKey(terminal.KeyRune, r, 0)
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}
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f.Paste("1 0x8")
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if got := f.Value(); got != "42108" {
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t.Fatalf("%q", got)
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}
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}
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// Tab and Shift+Tab move focus around the ring, wrapping either way
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func TestFocusRingWraps(t *testing.T) {
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f := Focus{Len: 3}
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f.HandleKey(terminal.KeyBacktab, terminal.ModShift)
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back := f.Index
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f.HandleKey(terminal.KeyTab, terminal.ModShift)
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shifted := f.Index
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for range 2 {
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f.HandleKey(terminal.KeyTab, 0)
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}
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if back != 2 || shifted != 1 || f.Index != 0 || f.HandleKey(terminal.KeyEnter, 0) {
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t.Fatalf("back %d, shifted %d, then %d", back, shifted, f.Index)
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}
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}
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// A field shows its error whether or not it has focus, its help only with
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// focus, and its value beside the label column
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func TestFieldShowsErrorOrHelp(t *testing.T) {
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f := Field{Label: "port", Required: true, Help: "listen port"}
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r := canvas(30, 2, DefaultTheme)
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value, rows := r.Field(0, 6, f, false, DefaultTheme)
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if rows != 1 || value.X != 9 || row(r, 0) != " port *" {
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t.Fatalf("unfocused: %d rows, value at %d, %q", rows, value.X, row(r, 0))
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}
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r = canvas(30, 2, DefaultTheme)
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if _, rows = r.Field(0, 6, f, true, DefaultTheme); rows != 2 || row(r, 1) != " listen port" {
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t.Fatalf("focused: %d rows, %q", rows, row(r, 1))
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}
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f.Error = "port: want 1-65535"
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r = canvas(30, 2, DefaultTheme)
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if _, rows = r.Field(0, 6, f, false, DefaultTheme); rows != 2 || !strings.HasSuffix(row(r, 1), "want 1-65535") {
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t.Fatalf("error: %d rows, %q", rows, row(r, 1))
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}
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}
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// An empty input shows its default, muted, with the cursor over it; typed
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// text replaces it
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func TestTextInputShowsTheDefaultUntilTyped(t *testing.T) {
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var f TextFieldState
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r := canvas(10, 1, DefaultTheme)
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r.TextInput(&f, "8080", true, DefaultTheme)
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if c := r.Cells[1]; row(r, 0) != "8080" || c.Fg != DefaultTheme.Muted.Fg || r.Cells[0].Bg != DefaultTheme.Cursor.Bg {
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t.Fatalf("empty: %q %+v", row(r, 0), c)
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}
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f.HandleKey(terminal.KeyRune, '9', 0)
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r.TextInput(&f, "8080", true, DefaultTheme)
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if c := r.Cells[0]; row(r, 0) != "9" || c.Fg != DefaultTheme.Text.Fg || c.Bg != DefaultTheme.Input.Bg {
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t.Fatalf("typed: %q %+v", row(r, 0), c)
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}
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}
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// A choice moves with Left and Right, or h and l, and stops at either end
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func TestChoiceStopsAtTheEnds(t *testing.T) {
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i, _ := StepChoice(terminal.KeyRune, 'l', 0, 2)
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j, moved := StepChoice(terminal.KeyRight, 0, i, 2)
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k, _ := StepChoice(terminal.KeyLeft, 0, j, 2)
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if i != 1 || j != 1 || moved || k != 0 {
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t.Fatalf("%d %d %v %d", i, j, moved, k)
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}
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}
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// A folded group says what it holds; an open one shows it instead
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func TestGroupSummarisesWhileFolded(t *testing.T) {
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folded, open := canvas(30, 1, MonoTheme), canvas(30, 1, MonoTheme)
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folded.Group(0, "tls", "on, pinned", false, false, MonoTheme)
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open.Group(0, "tls", "on, pinned", true, false, MonoTheme)
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if row(folded, 0) != " ▸ tls on, pinned" || row(open, 0) != " ▾ tls" {
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t.Fatalf("%q %q", row(folded, 0), row(open, 0))
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}
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}
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// A radio row too wide for its region shows the chosen option and those
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// around it, a '…' on each side where others are hidden, and reports the
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// columns drawn
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func TestRadioKeepsTheChosenInView(t *testing.T) {
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options := []string{"alpha", "beta", "gamma", "delta"}
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for _, c := range []struct {
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chosen, w int
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want string
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}{
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{3, 40, "○ alpha ○ beta ○ gamma ● delta"},
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{3, 30, "… ○ beta ○ gamma ● delta"},
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{3, 16, "… ● delta"},
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{3, 7, "… ● de…"},
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{0, 17, "● alpha …"},
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{1, 19, "○ alpha ● beta …"},
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{1, 25, "… ● beta ○ gamma …"},
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} {
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r := canvas(c.w, 1, MonoTheme)
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if n := r.Radio(0, 0, options, c.chosen, MonoTheme); row(r, 0) != c.want || n != min(c.w, RuneLen(c.want)) {
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t.Errorf("%d chosen in %d columns: %q, %d drawn; want %q", c.chosen, c.w, row(r, 0), n, c.want)
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}
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}
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}
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// A field's view pulls back when its text shrinks, so no column is left
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// blank while text is hidden, and a muted '…' marks text out of view, never
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// under the cursor
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func TestTextInputPullsBackAndMarksHiddenText(t *testing.T) {
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f := NewTextFieldState(strings.Repeat("abcdefghij", 2))
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draw := func(focused bool) string {
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r := canvas(10, 1, MonoTheme)
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r.TextInput(f, "", focused, MonoTheme)
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return row(r, 0)
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}
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if got := draw(true); got != "…cdefghij" {
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t.Fatalf("the cursor after 20 in 10 columns: %q", got)
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}
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for range 8 {
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f.HandleKey(terminal.KeyBackspace, 0, 0)
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}
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if got := draw(true); got != "…efghijab" {
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t.Fatalf("12 left: %q, scroll %d", got, f.Scroll)
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}
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f.HandleKey(terminal.KeyHome, 0, 0)
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if got := draw(true); got != "abcdefghi…" {
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t.Fatalf("the cursor at the start: %q", got)
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}
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}
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// A field's label leaves the value at least half the row; label width 0
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// stacks the label on its own row, whole, and the value under it
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func TestFieldLeavesTheValueHalfTheRow(t *testing.T) {
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for _, w := range []int{12, 30, 80} {
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r := canvas(w, 3, MonoTheme)
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if v, rows := r.Field(0, 40, Field{Label: "password_file"}, false, MonoTheme); v.W < (w-3)/2 || rows != 1 {
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t.Errorf("%d columns: value %d wide, %d rows", w, v.W, rows)
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}
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r = canvas(w, 3, MonoTheme)
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v, rows := r.Field(0, 0, Field{Label: "password_file"}, false, MonoTheme)
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if label := Truncate("password_file", w-2); row(r, 0) != " "+label || v.Y != 1 || v.W != w-4 || rows != 2 {
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t.Errorf("%d columns stacked: %q, value at row %d, %d wide, %d rows", w, row(r, 0), v.Y, v.W, rows)
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}
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}
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}
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// Text wraps at each line break, keeping an empty line, and a word longer
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// than the line breaks after a '.', ',', ':', '/', '[' or ']'
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func TestWrapTextBreaksAtLinesAndMarks(t *testing.T) {
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for text, want := range map[string][]string{
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"ab\ncd ef\n\ngh": {"ab", "cd ef", "", "gh"},
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"key: /etc/logwisp/very/long/path.pem": {"key:", "/etc/logwisp/very/", "long/path.pem"},
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} {
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if got := WrapText(text, map[bool]int{true: 5, false: 20}[strings.HasPrefix(text, "ab")]); !slices.Equal(got, want) {
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t.Errorf("%q: %q, want %q", text, got, want)
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}
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}
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}
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// Wrapping is linear in the lines: 4000 lines allocate under 1 MiB
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func TestWrapTextIsLinearInLines(t *testing.T) {
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text := strings.Repeat("x\n", 4000)
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var before, after runtime.MemStats
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runtime.ReadMemStats(&before)
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lines := WrapText(text, 80)
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runtime.ReadMemStats(&after)
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if len(lines) != 4001 || after.TotalAlloc-before.TotalAlloc > 1<<20 {
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t.Fatalf("%d lines, %d bytes allocated", len(lines), after.TotalAlloc-before.TotalAlloc)
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}
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}
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// Where the hint column would be narrow, the list shows names alone and the
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// cursor's hint wraps below them, in rows Rows counts; wide, hints sit beside
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func TestNarrowOptionListShowsTheCursorsHint(t *testing.T) {
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s := NewOptionListState([]Option{{Name: "pipe", Hint: "standard input to standard output"}, {Name: "tail", Hint: "follow files"}})
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s.Cursor = 1
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for w, want := range map[int][]string{
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60: {"/ type to filter", " pipe standard input to standard output", "▸ tail follow files"},
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20: {"/ type to filter", " pipe", "▸ tail", "", " follow files"},
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} {
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r := canvas(w, s.Rows(w), MonoTheme)
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r.OptionList(s, MonoTheme)
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var got []string
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for y := range r.H {
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got = append(got, row(r, y))
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}
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if !slices.Equal(got, want) {
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t.Errorf("%d columns: %q, want %q", w, got, want)
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}
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}
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}
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// A menu has no filter: a key picks its option, and typing filters nothing
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func TestMenuPicksByKey(t *testing.T) {
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s := NewOptionListState([]Option{{Name: "run", Key: 'r'}, {Name: "command", Key: 'c'}})
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s.Menu = true
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if i, ok := s.Pick('c'); !ok || i != 1 {
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t.Fatalf("c: %d, %v", i, ok)
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}
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if _, ok := s.Pick('x'); ok || s.HandleKey(terminal.KeyRune, 'x', 0) || s.Paste("r") || s.Filter.Value() != "" {
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t.Fatalf("x picked or filtered: %q", s.Filter.Value())
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}
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r := canvas(20, s.Rows(20), MonoTheme)
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r.OptionList(s, MonoTheme)
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if r.H != 2 || row(r, 0) != "▸ r run" || row(r, 1) != " c command" {
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t.Fatalf("%d rows: %q %q", r.H, row(r, 0), row(r, 1))
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}
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}
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// A frame's inside is the region within its border and padding, so a frame
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// sized to what it holds ends on it; the border takes the glyphs' line type
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func TestFrameHoldsItsInside(t *testing.T) {
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ascii := MonoTheme
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ascii.Glyphs = GlyphsASCII
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for _, c := range []struct {
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th Theme
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want [3]string
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}{{MonoTheme, [3]string{"┌─ T ───┐", "│ abcde │", "└───────┘"}}, {ascii, [3]string{"+- T ---+", "| abcde |", "+-------+"}}} {
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r := canvas(9, 3, c.th)
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in := r.Frame("T", c.th)
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in.TextStyled(0, 0, "abcde", c.th.Text)
|
|
if got := [3]string{row(r, 0), row(r, 1), row(r, 2)}; got != c.want || in.W != 5 || in.H != 1 {
|
|
t.Errorf("%q, inside %dx%d", got, in.W, in.H)
|
|
}
|
|
}
|
|
}
|
|
|
|
// A rule keeps its title; the hint at its end goes first when both do not fit
|
|
func TestRuleKeepsTheTitleBeforeTheHint(t *testing.T) {
|
|
for w, want := range map[int]string{40: "── file · source ────────────── ⏎ edit ─", 24: "── file · source ───────"} {
|
|
r := canvas(w, 1, MonoTheme)
|
|
if r.Rule(0, "file · source", "⏎ edit", MonoTheme); row(r, 0) != want {
|
|
t.Errorf("%d columns: %q", w, row(r, 0))
|
|
}
|
|
}
|
|
}
|
|
|
|
// Wires join where they meet: each cell draws the arms laid through it,
|
|
// whatever order they were laid in
|
|
func TestWiresJoinWhereTheyMeet(t *testing.T) {
|
|
g := NewWires(5, 3)
|
|
g.V(4, 1, 2)
|
|
g.H(1, 0, 4)
|
|
g.V(2, 0, 2)
|
|
g.H(9, 0, 9) // off the grid
|
|
for line, want := range map[LineType][3]string{LineSingle: {" │", "──┼─┐", " │ │"}, LineASCII: {" |", "--+-+", " | |"}} {
|
|
r := canvas(5, 3, MonoTheme)
|
|
r.DrawWires(g, line, MonoTheme.Border)
|
|
if got := [3]string{row(r, 0), row(r, 1), row(r, 2)}; got != want {
|
|
t.Errorf("%d: %q, want %q", line, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// A window shows the content's rows from the scroll offset, and fills what
|
|
// the content does not reach; a window with no columns draws nothing
|
|
func TestWindowShowsTheRowsInView(t *testing.T) {
|
|
r := canvas(6, 3, MonoTheme)
|
|
var v ViewportScroll
|
|
v.SetDimensions(10, r.H)
|
|
v.EnsureRange(7, 1)
|
|
content := func(c Region) {
|
|
for y := range c.H {
|
|
c.TextStyled(0, y, fmt.Sprintf("row %d", y), MonoTheme.Text)
|
|
}
|
|
}
|
|
r.Window(10, &v, MonoTheme.Text, content)
|
|
if got := [3]string{row(r, 0), row(r, 1), row(r, 2)}; got != [3]string{"row 5", "row 6", "row 7"} {
|
|
t.Fatalf("rows 5-7: %q", got)
|
|
}
|
|
r.Window(2, &v, MonoTheme.Text, content)
|
|
if got := [3]string{row(r, 0), row(r, 1), row(r, 2)}; got != [3]string{"row 0", "row 1", ""} {
|
|
t.Fatalf("two rows of content: %q", got)
|
|
}
|
|
r.Sub(8, 0, 4, 3).Window(10, &v, MonoTheme.Text, content) // no columns, past the right edge
|
|
}
|