/
bip39_test.go
200 lines (184 loc) · 5.02 KB
/
bip39_test.go
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package mnemonic_test
import (
_ "embed"
"errors"
"fmt"
"math"
"math/big"
"strings"
"testing"
"github.com/DIMO-Network/mnemonic"
)
//go:embed trezorTestVectors.json
var trezorTestVectors []byte
func TestToAndFromMnemonic(t *testing.T) {
t.Parallel()
for originalNum := 0; originalNum < math.MaxUint16; originalNum++ {
originalNum := originalNum
t.Run(fmt.Sprintf("Number:0x%x", originalNum), func(t *testing.T) {
t.Parallel()
// Convert the number to a mnemonic
words := mnemonic.FromBigInt(big.NewInt(int64(originalNum)))
// Convert the mnemonic back to a number
decodedNum, err := mnemonic.ToBigInt(words)
if err != nil {
t.Errorf("Error converting mnemonic to int for original number: %v, error: %v", originalNum, err)
return
}
// If the original number and the decoded number are not the same, then the test fails
if originalNum != int(decodedNum.Int64()) {
t.Errorf("Original number: %v, Decoded number: %v", originalNum, decodedNum)
return
}
})
}
}
func TestTrezorEnglishVectors(t *testing.T) {
t.Parallel()
for _, vector := range testVectors.English {
vector := vector
t.Run(vector[0], func(t *testing.T) {
t.Parallel()
hex, ok := big.NewInt(0).SetString(vector[0], 16)
if !ok {
t.Errorf("Invalid hex: %v", vector[0])
return
}
// Convert the mnemonic to a number
words, err := mnemonic.FromBigIntFixed(hex, len(vector[0])*4)
if err != nil {
t.Errorf("Failed to create mnemonic from hex: %v", err)
return
}
if strings.Join(words, " ") != vector[1] {
t.Errorf("Expected mnemonic: %v\n Got mnemonic: %v", vector[1], words)
return
}
decodedNum, err := mnemonic.ToBigInt(strings.Split(vector[1], " "))
if err != nil {
t.Errorf("Error converting mnemonic to integer: %v", err)
return
}
hex, _ = big.NewInt(0).SetString(vector[0], 16)
if decodedNum.Cmp(hex) != 0 {
t.Errorf("Expected hex: %v, Got hex: %v", hex.Text(16), decodedNum.Text(16))
return
}
})
}
}
func TestFixedTruncation(t *testing.T) {
t.Parallel()
const test64BitHex = 0xEEEEEEEEFFFFFFFF
const test32BitTruncatedHex = 0xEEEEEEEE
hex := big.NewInt(0).SetUint64(test64BitHex)
words, err := mnemonic.FromBigIntFixed(hex, 32)
if err != nil {
t.Errorf("Failed to create mnemonic from hex: %v", err)
return
}
// 32 bit hex with right most bits truncated
hexTruncaated := big.NewInt(0).SetUint64(test32BitTruncatedHex)
truncatedWords, err := mnemonic.FromBigIntFixed(hexTruncaated, 32)
if err != nil {
t.Errorf("Failed to create mnemonic from hex: %v", err)
return
}
for i, word := range words {
if word != truncatedWords[i] {
t.Errorf("manually truncated mnemonic does not match truncated mnemonic expected: %v\ngot:%v", words, truncatedWords)
return
}
}
}
func TestNextNumberDivisibleBy32(t *testing.T) {
t.Parallel()
tests := []struct {
num int
want int
}{
{0, 32},
{1, 32},
{31, 32},
{32, 32},
{33, 64},
{63, 64},
{64, 64},
{65, 96},
{127, 128},
{128, 128},
{129, 160},
{255, 256},
{256, 256},
}
for _, test := range tests {
test := test
t.Run(fmt.Sprintf("Number: %v", test.num), func(t *testing.T) {
t.Parallel()
got := mnemonic.NextNumberDivisibleBy32(test.num)
if got != test.want {
t.Errorf("Got: %v, Want: %v", got, test.want)
return
}
})
}
}
func TestInvalidWord(t *testing.T) {
t.Parallel()
words := []string{"DIMO", "world", "abandon"}
_, err := mnemonic.ToBigInt(words)
if !errors.Is(err, mnemonic.ErrInvalidWord) {
t.Errorf("Expected error for invalid word, got %v", err)
return
}
}
func TestInvalidWordLength(t *testing.T) {
t.Parallel()
words := []string{"zoo"}
_, err := mnemonic.ToBigInt(words)
if !errors.Is(err, mnemonic.ErrInvalidWord) {
t.Errorf("Expected error for invalid word, got %v", err)
return
}
}
// TestInvalidChecksum tests the case where the checksum is invalid
func TestInvalidChecksum(t *testing.T) {
t.Parallel()
words := []string{"sort", "labor", "armor", "various", "gown", "method", "public", "round", "deer", "leaf", "zoo", "zoo"}
_, err := mnemonic.ToBigInt(words)
if !errors.Is(err, mnemonic.ErrInvalidChecksum) {
t.Errorf("Expected error for invalid checksum, got %v", err)
return
}
}
func TestInvalidBitSize(t *testing.T) {
t.Parallel()
ent := big.NewInt(0).SetUint64(0x1234567890)
_, err := mnemonic.FromBigIntFixed(ent, 0)
if !errors.Is(err, mnemonic.ErrInvalidBitSize) {
t.Errorf("Expected error for invalid bit size, got %v", err)
return
}
_, err = mnemonic.FromBigIntFixed(ent, 50)
if !errors.Is(err, mnemonic.ErrInvalidBitSize) {
t.Errorf("Expected error for invalid bit size, got %v", err)
return
}
}
func TestHugeNumber(t *testing.T) {
t.Parallel()
ent := big.NewInt(1)
ent.Lsh(ent, 32*1000)
ent.Sub(ent, big.NewInt(1))
orig := new(big.Int).Set(ent)
words := mnemonic.FromBigInt(ent)
decoded, err := mnemonic.ToBigInt(words)
if err != nil {
t.Errorf("Error converting mnemonic to integer: %v", err)
return
}
if decoded.Cmp(orig) != 0 {
t.Errorf("Expected: %v, Got: %v", orig, decoded)
return
}
}