history_range_error_test.go RawHistoryFolder

1package vt
2
3import (
4	"testing"
5
6	"github.com/bnema/vev-vt/core"
7	"github.com/stretchr/testify/require"
8)
9
10func TestHistoryRangeReportsCorruptionWithoutPanicking(t *testing.T) {
11	h := compressionFixture(t)
12	compressFixture(t, h)
13	view := h.View()
14	page := view.Chunk(1).page
15	page.compressed[len(page.compressed)-1] ^= 0xff
16	calls := 0
17	err := view.Range(func([]core.Cell) bool { calls++; return true })
18	require.ErrorIs(t, err, ErrHistoryCorrupt)
19	require.Equal(t, 16, calls, "iteration stops before yielding any row from the corrupt page")
20	calls = 0
21	require.NoError(t, view.Range(func([]core.Cell) bool { calls++; return false }))
22	require.Equal(t, 1, calls, "early cancellation must not restore later pages")
23	require.NoError(t, (HistoryView{}).Range(nil))
24}