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package test_encoding_base32
import "core:testing"
import "core:bytes"
import "core:encoding/base32"
Error :: base32.Error
@(test)
test_base32_decode_valid :: proc(t: ^testing.T) {
// RFC 4648 Section 10 - Test vectors
cases := [?]struct {
input, expected: string,
}{
{"", ""},
{"MY======", "f"},
{"MZXQ====", "fo"},
{"MZXW6===", "foo"},
{"MZXW6YQ=", "foob"},
{"MZXW6YTB", "fooba"},
{"MZXW6YTBOI======", "foobar"},
}
for c in cases {
output, err := base32.decode(c.input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.None)
expected := transmute([]u8)c.expected
if output != nil {
testing.expect(t, bytes.equal(output, expected))
} else {
testing.expect(t, len(c.expected) == 0)
}
}
}
@(test)
test_base32_encode :: proc(t: ^testing.T) {
// RFC 4648 Section 10 - Test vectors
cases := [?]struct {
input, expected: string,
}{
{"", ""},
{"f", "MY======"},
{"fo", "MZXQ===="},
{"foo", "MZXW6==="},
{"foob", "MZXW6YQ="},
{"fooba", "MZXW6YTB"},
{"foobar", "MZXW6YTBOI======"},
}
for c in cases {
output := base32.encode(transmute([]byte)c.input)
defer delete(output)
testing.expect(t, output == c.expected)
}
}
@(test)
test_base32_decode_invalid :: proc(t: ^testing.T) {
// Section 3.3 - Non-alphabet characters
{
// Characters outside alphabet
input := "MZ1W6YTB" // '1' not in alphabet (A-Z, 2-7)
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Invalid_Character)
}
{
// Lowercase not allowed
input := "mzxq===="
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Invalid_Character)
}
// Section 3.2 - Padding requirements
{
// Padding in middle without trailing padding
input := "MZ===YTBMZXW6YTB" // '===' in middle, no trailing padding
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Malformed_Input)
}
{
// Padding must only be at end (with trailing padding)
input := "MZ=Q===="
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Malformed_Input)
}
{
// Missing padding
input := "MZXQ" // Should be MZXQ====
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Malformed_Input)
}
{
// Incorrect padding length
input := "MZXQ=" // Needs 4 padding chars
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Malformed_Input)
}
{
// Too much padding
input := "MY=========" // Extra padding chars
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Malformed_Input)
}
// Section 6 - Base32 block size requirements
{
// Single character (invalid block)
input := "M"
output, err := base32.decode(input)
if output != nil {
defer delete(output)
}
testing.expect_value(t, err, Error.Invalid_Length)
}
}
@(test)
test_base32_roundtrip :: proc(t: ^testing.T) {
cases := [?]string{
"",
"f",
"fo",
"foo",
"foob",
"fooba",
"foobar",
}
for input in cases {
encoded := base32.encode(transmute([]byte)input)
defer delete(encoded)
decoded, err := base32.decode(encoded)
if decoded != nil {
defer delete(decoded)
}
testing.expect_value(t, err, Error.None)
testing.expect(t, bytes.equal(decoded, transmute([]byte)input))
}
}
@(test)
test_base32_custom_alphabet :: proc(t: ^testing.T) {
custom_enc_table := [32]byte{
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
}
custom_dec_table: [256]u8
for i := 0; i < len(custom_enc_table); i += 1 {
custom_dec_table[custom_enc_table[i]] = u8(i)
}
/*
custom_dec_table := [256]u8{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x00-0x0f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x10-0x1f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x20-0x2f
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, // 0x30-0x3f ('0'-'9')
0, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, // 0x40-0x4f ('A'-'O')
25, 26, 27, 28, 29, 30, 31, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x50-0x5f ('P'-'V')
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x60-0x6f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x70-0x7f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x80-0x8f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x90-0x9f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xa0-0xaf
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xb0-0xbf
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xc0-0xcf
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xd0-0xdf
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xe0-0xef
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xf0-0xff
}
*/
custom_validate :: proc(c: byte) -> bool {
return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'V') || c == byte(base32.PADDING)
}
cases := [?]struct {
input: string,
enc_expected: string,
}{
{"f", "CO======"},
{"fo", "CPNG===="},
{"foo", "CPNMU==="},
}
for c in cases {
// Test encoding
encoded := base32.encode(transmute([]byte)c.input, custom_enc_table)
defer delete(encoded)
testing.expect(t, encoded == c.enc_expected)
// Test decoding
decoded, err := base32.decode(encoded, custom_dec_table, custom_validate)
defer if decoded != nil {
delete(decoded)
}
testing.expect_value(t, err, Error.None)
testing.expect(t, bytes.equal(decoded, transmute([]byte)c.input))
}
// Test invalid character detection
{
input := "WXY=====" // Contains chars not in our alphabet
output, err := base32.decode(input, custom_dec_table, custom_validate)
if output != nil {
delete(output)
}
testing.expect_value(t, err, Error.Invalid_Character)
}
}
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