zz_zerowidth_test.gno

 1package timecapsule
 2
 3import (
 4	"testing"
 5
 6	"gno.land/p/nt/testutils/v0"
 7)
 8
 9// zwBlank holds one input per rune range chain/markdown.StripBidiAndZeroWidth
10// removes (U+200B..U+200F, U+202A..U+202E, U+2066..U+2069, U+FEFF), plus a mix
11// with real spaces. strings.TrimSpace keeps every one of them and the render
12// strips them all, so each must be refused.
13var zwBlank = []string{
14	"\u200b\u200b\u200b", // ZWSP
15	"\u200d",             // ZWJ
16	"\u200e",             // LRM
17	"\u202e",             // RLO
18	"\u2066\u2069",       // LRI PDI
19	"\ufeff",             // BOM
20	" \u200b \u200b ",    // mixed with real spaces
21}
22
23// zwOK must stay accepted: the stripper removes the marks and leaves text.
24var zwOK = []string{"a", "a\u200bb", "  padded  "}
25
26func TestZeroWidthMessageIsRefused(cur realm, t *testing.T) {
27	resetState()
28	defer resetState()
29	testing.SetRealm(testing.NewUserRealm(testutils.TestAddress("alice")))
30	for _, s := range zwBlank {
31		if revive(func() { Leave(cross(cur), s, 5) }) == nil {
32			t.Errorf("Leave accepted message %q, which the render strips to blank", s)
33		}
34	}
35	for _, s := range zwOK {
36		if r := revive(func() { Leave(cross(cur), s, 5) }); r != nil {
37			t.Errorf("Leave refused message %q: %v", s, r)
38		}
39	}
40	if capsules.Len() != len(zwOK) {
41		t.Errorf("%d capsule(s), want %d", capsules.Len(), len(zwOK))
42	}
43}