gno.land/p/moul/x/wiki/v0⧉

1package wiki23import (4	"strings"5	"testing"67	"gno.land/p/nt/uassert/v0"8)910// maxLines is how many typical lines fit in DefaultMaxBody: 32 KiB at 4311// bytes per line.12const maxLines = 7581314func buildLines(n int) string {15	var b strings.Builder16	for i := 0; i < n; i++ {17		b.WriteString("some article line of moderate length here.\n")18	}19	return b.String()20}2122// TestWorstCaseRendersStayWithinTheQueryBudget exercises the two render paths23// at the largest body MaxBody admits.24//25// vm/qrender runs under a fixed ceiling (maxGasQuery = 3e9 in26// gno.land/pkg/sdk/vm/keeper.go), which a reader cannot raise, so a render27// that exceeds it makes the page permanently unreadable. Measured with28// `gno test -v` on gno master.184 (2026-09-17):29//30//	diff of a 33 KB body against itself plus one line    691M gas   23% of the ceiling31//	article render of a 33 KB body with links            693M gas   23% of the ceiling32//33// gno test reports gas per test function but a test cannot assert on it, so34// this test pins the shape, not the number: it fails if either path starts35// panicking or truncating at the limit. Re-measure with `gno test -v` and36// update the table when either path changes.37func TestWorstCaseRendersStayWithinTheQueryBudget(t *testing.T) {38	w := New(3, DefaultMaxBody)39	body := buildLines(maxLines-2) + "see [[Other page]]\n[[Category:Big]]\n"40	uassert.True(t, len(body) < DefaultMaxBody, "the fixture must fit in MaxBody")4142	now, h := at(1)43	_, err := w.Edit(alice, now, h, "Big", body, "", false)44	uassert.NoError(t, err)4546	p, err := w.Page("Big")47	uassert.NoError(t, err)4849	c := Ctx{Base: "/r/moul/x/wiki/v0", Exists: w.Exists}50	uassert.True(t, len(RenderArticle(c, w, p, nil)) > len(body), "the article must render in full")5152	now, h = at(2)53	_, err = w.Edit(alice, now, h, "Big", body+"added\n", "", false)54	uassert.NoError(t, err)5556	hist := p.History(0, 2)57	out := RenderDiff(c, p, hist[1], hist[0])58	uassert.True(t, strings.Contains(out, "+1 −0 lines"), "a one-line append to a 32 KiB body diffs exactly")59}60