bencodedemo_test.gno

 1package bencodedemo
 2
 3import (
 4	"strings"
 5	"testing"
 6
 7	"gno.land/p/nt/uassert/v0"
 8)
 9
10// TestRenderRefusesOversizedInput pins the page's own limit, which is tighter
11// than the library's: a Render runs under the chain's query gas meter and
12// gnoweb does not bound a render argument.
13func TestRenderRefusesOversizedInput(t *testing.T) {
14	big := "l" + strings.Repeat("1:a", (MaxInput-2)/3) + "e"
15	uassert.True(t, len(big) <= MaxInput, "the control input must be accepted")
16	got := Render("/" + big)
17	uassert.True(t, strings.Contains(got, "- list, "), "a legal input still decodes")
18
19	over := "l" + strings.Repeat("1:a", MaxInput) + "e"
20	got = Render("/" + over)
21	uassert.True(t, strings.Contains(got, "This page decodes at most 512."),
22		"an oversized input is refused by length, before decoding")
23	uassert.False(t, strings.Contains(got, "- list, "), "and nothing is decoded")
24}
25
26// TestRenderEscapesCallerMarkdown pins the escaping, which a pinned example
27// cannot show convincingly: the input there would have to be hostile.
28func TestRenderEscapesCallerMarkdown(t *testing.T) {
29	// 10 bytes, not 9: a wrong length is rejected before the decoded leaf is
30	// ever rendered, and the test would then only cover the echoed heading.
31	got := Render("/d3:cow10:[x](/evil)e")
32	uassert.False(t, strings.Contains(got, "Rejected"), "the input must decode")
33	uassert.False(t, strings.Contains(got, "[x](/evil)"), "the link must not survive")
34	uassert.True(t, strings.Contains(got, "**cow**: string "), "the decoded leaf is rendered")
35	uassert.Equal(t, 3, strings.Count(got, `\[x\]`), "escaped in the heading, the leaf and the re-encoding")
36}
37
38// TestRenderKeepsCallerBytes pins that the page does not trim the value it was
39// handed: a trailing space is part of a six byte string, not routing noise.
40func TestRenderKeepsCallerBytes(t *testing.T) {
41	got := Render("/6:hello ")
42	uassert.True(t, strings.Contains(got, "string hello"), "the space-bearing string decodes")
43	uassert.False(t, strings.Contains(got, "Rejected"), "and is not rejected")
44}