b58_test.gno

 1package b58
 2
 3import (
 4	"encoding/hex"
 5	"testing"
 6
 7	"gno.land/p/nt/uassert/v0"
 8)
 9
10// Known Bitcoin Base58 test vectors (hex input → Base58 string).
11var vectors = []struct {
12	hexIn string
13	b58   string
14}{
15	{"", ""},
16	{"61", "2g"},
17	{"626262", "a3gV"},
18	{"636363", "aPEr"},
19	{"73696d706c792061206c6f6e6720737472696e67", "2cFupjhnEsSn59qHXstmK2ffpLv2"},
20	{"516b6fcd0f", "ABnLTmg"},
21	{"bf4f89001e670274dd", "3SEo3LWLoPntC"},
22	{"572e4794", "3EFU7m"},
23	{"ecac89cad93923c02321", "EJDM8drfXA6uyA"},
24	{"10c8511e", "Rt5zm"},
25	{"00000000000000000000", "1111111111"},
26	{"00eb15231dfceb60925886b67d065299925915aeb172c06647", "1NS17iag9jJgTHD1VXjvLCEnZuQ3rJDE9L"},
27}
28
29func TestEncodeVectors(t *testing.T) {
30	for _, v := range vectors {
31		in, err := hex.DecodeString(v.hexIn)
32		uassert.NoError(t, err)
33		got := Encode(in)
34		uassert.Equal(t, v.b58, got)
35	}
36}
37
38func TestDecodeVectors(t *testing.T) {
39	for _, v := range vectors {
40		want, err := hex.DecodeString(v.hexIn)
41		uassert.NoError(t, err)
42		got := Decode(v.b58)
43		uassert.Equal(t, hex.EncodeToString(want), hex.EncodeToString(got))
44	}
45}
46
47func TestRoundTrip(t *testing.T) {
48	inputs := []string{
49		"",
50		"00",
51		"0000ff",
52		"deadbeef",
53		"68656c6c6f20776f726c64", // "hello world"
54		"ffffffffffffffff",
55	}
56	for _, hx := range inputs {
57		raw, err := hex.DecodeString(hx)
58		uassert.NoError(t, err)
59		back := Decode(Encode(raw))
60		uassert.Equal(t, hex.EncodeToString(raw), hex.EncodeToString(back))
61	}
62}
63
64func TestLeadingZeros(t *testing.T) {
65	uassert.Equal(t, "1", Encode([]byte{0}))
66	uassert.Equal(t, "11", Encode([]byte{0, 0}))
67	// One leading zero byte + a nonzero byte.
68	got := Decode("1" + Encode([]byte{0x2a}))
69	uassert.Equal(t, "002a", hex.EncodeToString(got))
70}
71
72func TestIsValid(t *testing.T) {
73	uassert.True(t, IsValid("2cFupjhnEsSn59qHXstmK2ffpLv2"))
74	uassert.True(t, IsValid("")) // empty is trivially valid
75	uassert.False(t, IsValid("0OIl"))  // all four excluded characters
76	uassert.False(t, IsValid("abc?"))  // punctuation not in alphabet
77}
78
79func TestDecodeInvalid(t *testing.T) {
80	// A '0' is not part of the Base58 alphabet → nil.
81	uassert.Equal(t, true, Decode("invalid0char") == nil)
82}