edit_navigation_test.go RawHistoryFolder

1package ui
2
3import (
4	"github.com/bnema/nefergui/internal/css"
5	"github.com/bnema/nefergui/internal/text"
6	"testing"
7)
8
9func TestWrappedNavigationAndScroll(t *testing.T) {
10	catalog, err := text.Load(text.DirectorySource("../../testdata/fonts"))
11	if err != nil {
12		t.Fatal(err)
13	}
14	r := newRuntime()
15	r.setTextEngine(text.NewEngine(catalog))
16	r.styles = css.Compile(css.UA(), css.Parse(`textarea {width: 45px; height: 20px; font-size:16px} input {width: 30px; height:20px; font-size:16px}`))
17	value := "one two three four five six"
18	single := "abcdefghijk"
19	view := func(f *Frame) {
20		root := f.Root()
21		root.Textarea("multiline", &value, Key("multi"))
22		root.Input("single", &single, Key("single"))
23	}
24	r.Build(view)
25	n := r.output.Tree.Children[0]
26	id := n.ID
27	if len(n.Lines) < 3 {
28		t.Fatalf("expected wraps, got %d", len(n.Lines))
29	}
30	r.route(key("Tab"))
31	r.Build(view)
32	s := r.edits[id]
33	s.Move(0, false)
34	r.Redraw()
35	r.Build(view)
36	r.route(key("Down"))
37	r.Build(view)
38	first := s.Cursor
39	if first == 0 {
40		t.Fatal("down did not move to wrapped line")
41	}
42	r.route(key("Down"))
43	r.Build(view)
44	if s.Cursor <= first || !s.PreferredXValid {
45		t.Fatalf("second wrapped down: %d then %d", first, s.Cursor)
46	}
47	if r.output.Tree.Children[0].ScrollY <= 0 {
48		t.Fatal("caret did not scroll textarea vertically")
49	}
50	r.route(key("Up"))
51	r.Build(view)
52	if s.Cursor != first {
53		t.Fatalf("preferred-x return got %d want %d", s.Cursor, first)
54	}
55	r.route(key("Tab"))
56	r.Build(view)
57	singleNode := r.output.Tree.Children[1]
58	if len(singleNode.Lines) != 1 {
59		t.Fatalf("input wrapped: %d", len(singleNode.Lines))
60	}
61	if singleNode.ScrollX <= 0 || singleNode.ScrollY != 0 {
62		t.Fatalf("input scroll %+v", singleNode)
63	}
64}