| 🛟 Updated. 28d5985 k33g 12h ago | 1 | package ui |
| 2 | |
| 3 | import ( |
| 4 | "strings" |
| 5 | "testing" |
| 6 | |
| 7 | "github.com/gdamore/tcell/v2" |
| 8 | |
| 📦 Turbo Core f3ade8d k33g 4h ago | 9 | "rickub.com/turbo-editors/turbo-core/theme" |
| 🛟 Updated. 28d5985 k33g 12h ago | 10 | ) |
| 11 | |
| 12 | // newTestScreen returns a simulated terminal of the given size, already |
| 13 | // initialised, together with a painter covering it. |
| 14 | // |
| 15 | // tcell's SimulationScreen is a real Screen that draws into memory, so every |
| 16 | // widget below is exercised through exactly the code path a terminal takes — |
| 17 | // no rendering is stubbed out. |
| 18 | func newTestScreen(t *testing.T, width, height int) (tcell.SimulationScreen, *Painter) { |
| 19 | t.Helper() |
| 20 | |
| 21 | screen := tcell.NewSimulationScreen("UTF-8") |
| 22 | if err := screen.Init(); err != nil { |
| 23 | t.Fatalf("initialising the simulation screen: %v", err) |
| 24 | } |
| 25 | t.Cleanup(screen.Fini) |
| 26 | screen.SetSize(width, height) |
| 27 | |
| 28 | return screen, NewPainter(screen) |
| 29 | } |
| 30 | |
| 31 | // screenLines returns what the simulated screen currently shows, one string |
| 32 | // per row, so a test can assert on the picture rather than on cells. |
| 33 | func screenLines(t *testing.T, screen tcell.SimulationScreen) []string { |
| 34 | t.Helper() |
| 35 | |
| 36 | cells, width, height := screen.GetContents() |
| 37 | lines := make([]string, height) |
| 38 | for y := range height { |
| 39 | var row strings.Builder |
| 40 | for x := range width { |
| 41 | runes := cells[y*width+x].Runes |
| 42 | if len(runes) == 0 { |
| 43 | row.WriteRune(' ') |
| 44 | continue |
| 45 | } |
| 46 | row.WriteRune(runes[0]) |
| 47 | } |
| 48 | lines[y] = row.String() |
| 49 | } |
| 50 | return lines |
| 51 | } |
| 52 | |
| 53 | // styleAt returns the style of one cell of the simulated screen. |
| 54 | func styleAt(t *testing.T, screen tcell.SimulationScreen, x, y int) tcell.Style { |
| 55 | t.Helper() |
| 56 | |
| 57 | cells, width, _ := screen.GetContents() |
| 58 | return cells[y*width+x].Style |
| 59 | } |
| 60 | |
| 61 | // testTheme is a theme whose every key has a distinct, easily recognised |
| 62 | // colour, so a test can prove which style was used. |
| 63 | func testTheme(t *testing.T) *theme.Theme { |
| 64 | t.Helper() |
| 65 | |
| 66 | th, err := theme.Parse([]byte(` |
| 67 | [colors] |
| 68 | default = { fg = "white", bg = "black" } |
| 69 | desktop = { fg = "blue", bg = "navy" } |
| 70 | shadow = { fg = "gray", bg = "black" } |
| 71 | "menu.bar" = { fg = "black", bg = "silver" } |
| 72 | "menu.item" = { fg = "black", bg = "silver" } |
| 73 | "menu.selected" = { fg = "black", bg = "green" } |
| 74 | "menu.shortcut" = { fg = "maroon", bg = "silver" } |
| 75 | "menu.disabled" = { fg = "gray", bg = "silver" } |
| 76 | "window.frame.active" = { fg = "white", bg = "navy" } |
| 77 | "window.frame.inactive" = { fg = "silver", bg = "navy" } |
| 78 | "window.title.active" = { fg = "yellow", bg = "navy" } |
| 79 | "window.title.inactive" = { fg = "silver", bg = "navy" } |
| 80 | "window.body" = { fg = "silver", bg = "navy" } |
| 81 | statusbar = { fg = "black", bg = "silver" } |
| 82 | "statusbar.key" = { fg = "maroon", bg = "silver" } |
| 83 | "statusbar.hint" = { fg = "navy", bg = "silver" } |
| 84 | scrollbar = { fg = "navy", bg = "teal" } |
| 85 | "scrollbar.thumb" = { fg = "aqua", bg = "teal" } |
| 86 | "dialog.frame" = { fg = "white", bg = "silver" } |
| 87 | "dialog.body" = { fg = "black", bg = "silver" } |
| 88 | "dialog.title" = { fg = "black", bg = "silver" } |
| 89 | "dialog.label" = { fg = "black", bg = "silver" } |
| 90 | button = { fg = "black", bg = "green" } |
| 91 | "button.focused" = { fg = "white", bg = "green" } |
| 92 | "button.shortcut" = { fg = "yellow", bg = "green" } |
| 93 | input = { fg = "black", bg = "teal" } |
| 94 | "input.focused" = { fg = "white", bg = "teal" } |
| 95 | list = { fg = "black", bg = "silver" } |
| 96 | "list.selected" = { fg = "white", bg = "navy" } |
| 97 | "list.unfocused" = { fg = "black", bg = "gray" } |
| 98 | checkbox = { fg = "black", bg = "silver" } |
| 99 | "checkbox.focused" = { fg = "white", bg = "navy" } |
| 100 | `), "") |
| 101 | if err != nil { |
| 102 | t.Fatalf("parsing the test theme: %v", err) |
| 103 | } |
| 104 | return th |
| 105 | } |
| 106 | |
| 107 | // keyEvent builds a key press. |
| 108 | func keyEvent(key tcell.Key, r rune, mods tcell.ModMask) *tcell.EventKey { |
| 109 | return tcell.NewEventKey(key, r, mods) |
| 110 | } |
| 111 | |
| 112 | // runeEvent builds the press of a printable character. |
| 113 | func runeEvent(r rune) *tcell.EventKey { |
| 114 | return tcell.NewEventKey(tcell.KeyRune, r, tcell.ModNone) |
| 115 | } |
| 116 | |
| 117 | // clickEvent builds a left-button press at a screen position. |
| 118 | func clickEvent(x, y int) *tcell.EventMouse { |
| 119 | return tcell.NewEventMouse(x, y, tcell.Button1, tcell.ModNone) |
| 120 | } |
| 121 | |
| 122 | // releaseEvent builds the release of every mouse button at a position. |
| 123 | func releaseEvent(x, y int) *tcell.EventMouse { |
| 124 | return tcell.NewEventMouse(x, y, tcell.ButtonNone, tcell.ModNone) |
| 125 | } |