zz_zerowidth_test.gno

 1package faucet
 2
 3import (
 4	"testing"
 5)
 6
 7// zwBlank holds one input per rune range chain/markdown.StripBidiAndZeroWidth
 8// removes (U+200B..U+200F, U+202A..U+202E, U+2066..U+2069, U+FEFF), plus a mix
 9// with real spaces. strings.TrimSpace keeps every one of them and the render
10// strips them all, so each must be refused.
11var zwBlank = []string{
12	"\u200b\u200b\u200b", // ZWSP
13	"\u200d",             // ZWJ
14	"\u200e",             // LRM
15	"\u202e",             // RLO
16	"\u2066\u2069",       // LRI PDI
17	"\ufeff",             // BOM
18	" \u200b \u200b ",    // mixed with real spaces
19}
20
21// zwOK must stay accepted: the stripper removes the marks and leaves text.
22var zwOK = []string{"a", "a\u200bb", "  padded  "}
23
24func TestZeroWidthReasonIsRefused(cur realm, t *testing.T) {
25	reset()
26	defer reset()
27	testing.SetRealm(testing.NewUserRealm(carl))
28	for _, s := range zwBlank {
29		if revive(func() { Request(cross(cur), zoe.String(), 1_000_000, s) }) == nil {
30			t.Errorf("Request accepted reason %q, which the render strips to blank", s)
31		}
32	}
33	for _, s := range zwOK {
34		if r := revive(func() { Request(cross(cur), zoe.String(), 1_000_000, s) }); r != nil {
35			t.Errorf("Request refused reason %q: %v", s, r)
36		}
37	}
38	if Requests() != len(zwOK) {
39		t.Errorf("Requests = %d, want %d", Requests(), len(zwOK))
40	}
41}
42
43func TestZeroWidthDenyReasonIsRefused(cur realm, t *testing.T) {
44	reset()
45	defer reset()
46	testing.SetRealm(testing.NewUserRealm(carl))
47	id := Request(cross(cur), zoe.String(), 1_000_000, "to try the chain")
48	testing.SetRealm(testing.NewUserRealm(Owner))
49	for _, s := range zwBlank {
50		if revive(func() { Deny(cross(cur), id, s) }) == nil {
51			t.Errorf("Deny accepted reason %q, which the render strips to blank", s)
52		}
53	}
54	if Status(id) != StatusPending {
55		t.Fatalf("Status = %q after blank denials, want %q", Status(id), StatusPending)
56	}
57	for _, s := range zwOK {
58		testing.SetRealm(testing.NewUserRealm(carl))
59		id := Request(cross(cur), zoe.String(), 1_000_000, "to try the chain")
60		testing.SetRealm(testing.NewUserRealm(Owner))
61		if r := revive(func() { Deny(cross(cur), id, s) }); r != nil {
62			t.Errorf("Deny refused reason %q: %v", s, r)
63		}
64		if Status(id) != StatusDenied {
65			t.Errorf("Status = %q, want %q", Status(id), StatusDenied)
66		}
67	}
68}