history_final_acceptance_test.go RawHistoryFolder

1package vt
2
3import (
4	"testing"
5
6	renderer "github.com/bnema/vev-vt/core"
7	"github.com/stretchr/testify/require"
8)
9
10func TestHistoryAcceptanceKeepsBookmarksAcrossLiveScrollEvictionAndRestore(t *testing.T) {
11	history := NewHistory(HistoryConfig{MaxRows: 3, MaxBytes: 1 << 20, ChunkRows: 2})
12	for _, text := range []string{"live-1", "live-2", "live-3"} {
13		require.NoError(t, history.Append(historyAcceptanceRow(text), LineBound{End: len(text)}))
14	}
15
16	beforeScroll := history.View()
17	bookmark := beforeScroll.RowID(1)
18	immutable := beforeScroll.Row(1)
19	immutable[0].Rune = 'X'
20	require.Equal(t, 'l', beforeScroll.Row(1)[0].Rune, "immutable history view exposed mutable cells")
21
22	require.NoError(t, history.Append(historyAcceptanceRow("live-4"), LineBound{End: 6}))
23	afterScroll := history.View()
24	require.Equal(t, 3, afterScroll.Len())
25	require.Equal(t, 0, afterScroll.FindRowID(bookmark), "bookmark row was not retained after one live scroll")
26	require.Equal(t, "live-2", historyAcceptanceText(afterScroll.Row(0)))
27	require.Equal(t, "live-1", historyAcceptanceText(beforeScroll.Row(0)), "retained view changed after eviction")
28
29	sealed, tail, err := MarshalSealedHistory(history.SealAndView())
30	require.NoError(t, err)
31	restored, err := HistoryFromBlobs(HistoryConfig{MaxRows: 3, MaxBytes: 1 << 20, ChunkRows: 2}, sealed, tail)
32	require.NoError(t, err)
33	restoredView := restored.View()
34	require.Equal(t, afterScroll.Len(), restoredView.Len())
35	require.Equal(t, bookmark, restoredView.RowID(0), "bookmark row identity changed during restore")
36	require.Equal(t, "live-2", historyAcceptanceText(restoredView.Row(0)))
37
38	next := restoredView.NextRowID()
39	require.NoError(t, restored.Append(historyAcceptanceRow("live-5"), LineBound{End: 6}))
40	require.Greater(t, restored.View().NextRowID(), next)
41}
42
43func historyAcceptanceRow(text string) []renderer.Cell {
44	row := make([]renderer.Cell, len(text))
45	for i, r := range text {
46		row[i] = renderer.Cell{Rune: r}
47	}
48	return row
49}
50
51func historyAcceptanceText(row []renderer.Cell) string {
52	text := make([]rune, len(row))
53	for i, cell := range row {
54		text[i] = cell.Rune
55	}
56	return string(text)
57}