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oxen-mq/tests/test_encoding.cpp

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#include "oxenmq/hex.h"
#include "oxenmq/base32z.h"
#include "oxenmq/base64.h"
#include "common.h"
#include <iterator>
using namespace std::literals;
const std::string pk = "\xf1\x6b\xa5\x59\x10\x39\xf0\x89\xb4\x2a\x83\x41\x75\x09\x30\x94\x07\x4d\x0d\x93\x7a\x79\xe5\x3e\x5c\xe7\x30\xf9\x46\xe1\x4b\x88";
const std::string pk_hex = "f16ba5591039f089b42a834175093094074d0d937a79e53e5ce730f946e14b88";
const std::string pk_b32z = "6fi4kseo88aeupbkopyzknjo1odw4dcuxjh6kx1hhhax1tzbjqry";
const std::string pk_b64 = "8WulWRA58Im0KoNBdQkwlAdNDZN6eeU+XOcw+UbhS4g=";
TEST_CASE("hex encoding/decoding", "[encoding][decoding][hex]") {
REQUIRE( oxenmq::to_hex("\xff\x42\x12\x34") == "ff421234"s );
std::vector<uint8_t> chars{{1, 10, 100, 254}};
std::array<uint8_t, 8> out;
std::array<uint8_t, 8> expected{{'0', '1', '0', 'a', '6', '4', 'f', 'e'}};
oxenmq::to_hex(chars.begin(), chars.end(), out.begin());
REQUIRE( out == expected );
REQUIRE( oxenmq::to_hex(chars.begin(), chars.end()) == "010a64fe" );
REQUIRE( oxenmq::from_hex("12345678ffEDbca9") == "\x12\x34\x56\x78\xff\xed\xbc\xa9"s );
REQUIRE( oxenmq::is_hex("1234567890abcdefABCDEF1234567890abcdefABCDEF") );
REQUIRE_FALSE( oxenmq::is_hex("1234567890abcdefABCDEF1234567890aGcdefABCDEF") );
// ^
REQUIRE_FALSE( oxenmq::is_hex("1234567890abcdefABCDEF1234567890agcdefABCDEF") );
// ^
REQUIRE_FALSE( oxenmq::is_hex("\x11\xff") );
constexpr auto odd_hex = "1234567890abcdefABCDEF1234567890abcdefABCDE"sv;
REQUIRE_FALSE( oxenmq::is_hex(odd_hex) );
REQUIRE_FALSE( oxenmq::is_hex("0") );
REQUIRE( std::all_of(odd_hex.begin(), odd_hex.end(), oxenmq::is_hex_digit<char>) );
REQUIRE( oxenmq::from_hex(pk_hex) == pk );
REQUIRE( oxenmq::to_hex(pk) == pk_hex );
REQUIRE( oxenmq::from_hex(pk_hex.begin(), pk_hex.end()) == pk );
std::vector<std::byte> bytes{{std::byte{0xff}, std::byte{0x42}, std::byte{0x12}, std::byte{0x34}}};
std::basic_string_view<std::byte> b{bytes.data(), bytes.size()};
REQUIRE( oxenmq::to_hex(b) == "ff421234"s );
// In-place decoding and truncation via to_hex's returned iterator:
std::string some_hex = "48656c6c6f";
some_hex.erase(oxenmq::from_hex(some_hex.begin(), some_hex.end(), some_hex.begin()), some_hex.end());
REQUIRE( some_hex == "Hello" );
// Test the returned iterator from encoding
std::string hellohex;
*oxenmq::to_hex(some_hex.begin(), some_hex.end(), std::back_inserter(hellohex))++ = '!';
REQUIRE( hellohex == "48656c6c6f!" );
bytes.resize(8);
bytes[0] = std::byte{'f'}; bytes[1] = std::byte{'f'}; bytes[2] = std::byte{'4'}; bytes[3] = std::byte{'2'};
bytes[4] = std::byte{'1'}; bytes[5] = std::byte{'2'}; bytes[6] = std::byte{'3'}; bytes[7] = std::byte{'4'};
std::basic_string_view<std::byte> hex_bytes{bytes.data(), bytes.size()};
REQUIRE( oxenmq::is_hex(hex_bytes) );
REQUIRE( oxenmq::from_hex(hex_bytes) == "\xff\x42\x12\x34" );
REQUIRE( oxenmq::to_hex_size(1) == 2 );
REQUIRE( oxenmq::to_hex_size(2) == 4 );
REQUIRE( oxenmq::to_hex_size(3) == 6 );
REQUIRE( oxenmq::to_hex_size(4) == 8 );
REQUIRE( oxenmq::to_hex_size(100) == 200 );
REQUIRE( oxenmq::from_hex_size(2) == 1 );
REQUIRE( oxenmq::from_hex_size(4) == 2 );
REQUIRE( oxenmq::from_hex_size(6) == 3 );
REQUIRE( oxenmq::from_hex_size(98) == 49 );
}
TEST_CASE("base32z encoding/decoding", "[encoding][decoding][base32z]") {
REQUIRE( oxenmq::to_base32z("\0\0\0\0\0"s) == "yyyyyyyy" );
REQUIRE( oxenmq::to_base32z("\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef"sv)
== "yrtwk3hjixg66yjdeiuauk6p7hy1gtm8tgih55abrpnsxnpm3zzo");
REQUIRE( oxenmq::from_base32z("yrtwk3hjixg66yjdeiuauk6p7hy1gtm8tgih55abrpnsxnpm3zzo")
== "\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef"sv);
REQUIRE( oxenmq::from_base32z("YRTWK3HJIXG66YJDEIUAUK6P7HY1GTM8TGIH55ABRPNSXNPM3ZZO")
== "\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef\x01\x23\x45\x67\x89\xab\xcd\xef"sv);
auto five_nulls = oxenmq::from_base32z("yyyyyyyy");
REQUIRE( five_nulls.size() == 5 );
REQUIRE( five_nulls == "\0\0\0\0\0"s );
// 00000 00001 00010 00011 00100 00101 00110 00111
// ==
// 00000000 01000100 00110010 00010100 11000111
REQUIRE( oxenmq::from_base32z("ybndrfg8") == "\x00\x44\x32\x14\xc7"s );
// Special case 1: 7 base32z digits with 3 trailing 0 bits -> 4 bytes (the trailing 0s are dropped)
// 00000 00001 00010 00011 00100 00101 11000
// ==
// 00000000 01000100 00110010 00010111
REQUIRE( oxenmq::from_base32z("ybndrfa") == "\x00\x44\x32\x17"s );
// Round-trip it:
REQUIRE( oxenmq::from_base32z(oxenmq::to_base32z("\x00\x44\x32\x17"sv)) == "\x00\x44\x32\x17"sv );
REQUIRE( oxenmq::to_base32z(oxenmq::from_base32z("ybndrfa")) == "ybndrfa" );
// Special case 2: 7 base32z digits with 3 trailing bits 010; we just ignore the trailing stuff,
// as if it was specified as 0. (The last digit here is 11010 instead of 11000).
REQUIRE( oxenmq::from_base32z("ybndrf4") == "\x00\x44\x32\x17"s );
// This one won't round-trip to the same value since it has ignored garbage bytes at the end
REQUIRE( oxenmq::to_base32z(oxenmq::from_base32z("ybndrf4"s)) == "ybndrfa" );
REQUIRE( oxenmq::to_base32z(pk) == pk_b32z );
REQUIRE( oxenmq::to_base32z(pk.begin(), pk.end()) == pk_b32z );
REQUIRE( oxenmq::from_base32z(pk_b32z) == pk );
REQUIRE( oxenmq::from_base32z(pk_b32z.begin(), pk_b32z.end()) == pk );
std::string pk_b32z_again, pk_again;
oxenmq::to_base32z(pk.begin(), pk.end(), std::back_inserter(pk_b32z_again));
oxenmq::from_base32z(pk_b32z.begin(), pk_b32z.end(), std::back_inserter(pk_again));
REQUIRE( pk_b32z_again == pk_b32z );
REQUIRE( pk_again == pk );
// In-place decoding and truncation via returned iterator:
std::string some_b32z = "jb1sa5dx";
some_b32z.erase(oxenmq::from_base32z(some_b32z.begin(), some_b32z.end(), some_b32z.begin()), some_b32z.end());
REQUIRE( some_b32z == "Hello" );
// Test the returned iterator from encoding
std::string hellob32z;
*oxenmq::to_base32z(some_b32z.begin(), some_b32z.end(), std::back_inserter(hellob32z))++ = '!';
REQUIRE( hellob32z == "jb1sa5dx!" );
std::vector<std::byte> bytes{{std::byte{0}, std::byte{255}}};
std::basic_string_view<std::byte> b{bytes.data(), bytes.size()};
REQUIRE( oxenmq::to_base32z(b) == "yd9o" );
bytes.resize(4);
bytes[0] = std::byte{'y'}; bytes[1] = std::byte{'d'}; bytes[2] = std::byte{'9'}; bytes[3] = std::byte{'o'};
std::basic_string_view<std::byte> b32_bytes{bytes.data(), bytes.size()};
REQUIRE( oxenmq::is_base32z(b32_bytes) );
REQUIRE( oxenmq::from_base32z(b32_bytes) == "\x00\xff"sv );
REQUIRE( oxenmq::is_base32z("") );
REQUIRE_FALSE( oxenmq::is_base32z("y") );
REQUIRE( oxenmq::is_base32z("yy") );
REQUIRE_FALSE( oxenmq::is_base32z("yyy") );
REQUIRE( oxenmq::is_base32z("yyyy") );
REQUIRE( oxenmq::is_base32z("yyyyy") );
REQUIRE_FALSE( oxenmq::is_base32z("yyyyyy") );
REQUIRE( oxenmq::is_base32z("yyyyyyy") );
REQUIRE( oxenmq::is_base32z("yyyyyyyy") );
REQUIRE( oxenmq::to_base32z_size(1) == 2 );
REQUIRE( oxenmq::to_base32z_size(2) == 4 );
REQUIRE( oxenmq::to_base32z_size(3) == 5 );
REQUIRE( oxenmq::to_base32z_size(4) == 7 );
REQUIRE( oxenmq::to_base32z_size(5) == 8 );
REQUIRE( oxenmq::to_base32z_size(30) == 48 );
REQUIRE( oxenmq::to_base32z_size(31) == 50 );
REQUIRE( oxenmq::to_base32z_size(32) == 52 );
REQUIRE( oxenmq::to_base32z_size(33) == 53 );
REQUIRE( oxenmq::to_base32z_size(100) == 160 );
REQUIRE( oxenmq::from_base32z_size(160) == 100 );
REQUIRE( oxenmq::from_base32z_size(53) == 33 );
REQUIRE( oxenmq::from_base32z_size(52) == 32 );
REQUIRE( oxenmq::from_base32z_size(50) == 31 );
REQUIRE( oxenmq::from_base32z_size(48) == 30 );
REQUIRE( oxenmq::from_base32z_size(8) == 5 );
REQUIRE( oxenmq::from_base32z_size(7) == 4 );
REQUIRE( oxenmq::from_base32z_size(5) == 3 );
REQUIRE( oxenmq::from_base32z_size(4) == 2 );
REQUIRE( oxenmq::from_base32z_size(2) == 1 );
}
TEST_CASE("base64 encoding/decoding", "[encoding][decoding][base64]") {
// 00000000 00000000 00000000 -> 000000 000000 000000 000000
REQUIRE( oxenmq::to_base64("\0\0\0"s) == "AAAA" );
// 00000001 00000002 00000003 -> 000000 010000 000200 000003
REQUIRE( oxenmq::to_base64("\x01\x02\x03"s) == "AQID" );
REQUIRE( oxenmq::to_base64("\0\0\0\0"s) == "AAAAAA==" );
// 00000000 00000000 00000000 11111111 ->
// 000000 000000 000000 000000 111111 110000 (pad) (pad)
REQUIRE( oxenmq::to_base64("a") == "YQ==" );
REQUIRE( oxenmq::to_base64("ab") == "YWI=" );
REQUIRE( oxenmq::to_base64("abc") == "YWJj" );
REQUIRE( oxenmq::to_base64("abcd") == "YWJjZA==" );
REQUIRE( oxenmq::to_base64("abcde") == "YWJjZGU=" );
REQUIRE( oxenmq::to_base64("abcdef") == "YWJjZGVm" );
REQUIRE( oxenmq::to_base64_unpadded("a") == "YQ" );
REQUIRE( oxenmq::to_base64_unpadded("ab") == "YWI" );
REQUIRE( oxenmq::to_base64_unpadded("abc") == "YWJj" );
REQUIRE( oxenmq::to_base64_unpadded("abcd") == "YWJjZA" );
REQUIRE( oxenmq::to_base64_unpadded("abcde") == "YWJjZGU" );
REQUIRE( oxenmq::to_base64_unpadded("abcdef") == "YWJjZGVm" );
REQUIRE( oxenmq::to_base64("\0\0\0\xff"s) == "AAAA/w==" );
REQUIRE( oxenmq::to_base64("\0\0\0\xff\xff"s) == "AAAA//8=" );
REQUIRE( oxenmq::to_base64("\0\0\0\xff\xff\xff"s) == "AAAA////" );
REQUIRE( oxenmq::to_base64(
"Man is distinguished, not only by his reason, but by this singular passion from other "
"animals, which is a lust of the mind, that by a perseverance of delight in the "
"continued and indefatigable generation of knowledge, exceeds the short vehemence of "
"any carnal pleasure.")
==
"TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieSB0aGlz"
"IHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2Yg"
"dGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGlu"
"dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBleGNlZWRzIHRo"
"ZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4=" );
REQUIRE( oxenmq::from_base64("A+/A") == "\x03\xef\xc0" );
REQUIRE( oxenmq::from_base64("YWJj") == "abc" );
REQUIRE( oxenmq::from_base64("YWJjZA==") == "abcd" );
REQUIRE( oxenmq::from_base64("YWJjZA") == "abcd" );
REQUIRE( oxenmq::from_base64("YWJjZB") == "abcd" ); // ignore superfluous bits
REQUIRE( oxenmq::from_base64("YWJjZB") == "abcd" ); // ignore superfluous bits
REQUIRE( oxenmq::from_base64("YWJj+") == "abc" ); // ignore superfluous bits
REQUIRE( oxenmq::from_base64("YWJjZGU=") == "abcde" );
REQUIRE( oxenmq::from_base64("YWJjZGU") == "abcde" );
REQUIRE( oxenmq::from_base64("YWJjZGVm") == "abcdef" );
REQUIRE( oxenmq::is_base64("YWJjZGVm") );
REQUIRE( oxenmq::is_base64("YWJjZGU") );
REQUIRE( oxenmq::is_base64("YWJjZGU=") );
REQUIRE( oxenmq::is_base64("YWJjZA==") );
REQUIRE( oxenmq::is_base64("YWJjZA") );
REQUIRE( oxenmq::is_base64("YWJjZB") ); // not really valid, but we explicitly accept it
REQUIRE_FALSE( oxenmq::is_base64("YWJjZ=") ); // invalid padding (padding can only be 4th or 3rd+4th of a 4-char block)
REQUIRE_FALSE( oxenmq::is_base64("YYYYA") ); // invalid: base64 can never be length 4n+1
REQUIRE_FALSE( oxenmq::is_base64("YWJj=") );
REQUIRE_FALSE( oxenmq::is_base64("YWJj=A") );
REQUIRE_FALSE( oxenmq::is_base64("YWJjA===") );
REQUIRE_FALSE( oxenmq::is_base64("YWJ[") );
REQUIRE_FALSE( oxenmq::is_base64("YWJ.") );
REQUIRE_FALSE( oxenmq::is_base64("_YWJ") );
REQUIRE( oxenmq::from_base64(
"TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieSB0aGlz"
"IHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2Yg"
"dGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGlu"
"dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBleGNlZWRzIHRo"
"ZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4=" )
==
"Man is distinguished, not only by his reason, but by this singular passion from other "
"animals, which is a lust of the mind, that by a perseverance of delight in the "
"continued and indefatigable generation of knowledge, exceeds the short vehemence of "
"any carnal pleasure.");
REQUIRE( oxenmq::to_base64(pk) == pk_b64 );
REQUIRE( oxenmq::to_base64(pk.begin(), pk.end()) == pk_b64 );
REQUIRE( oxenmq::from_base64(pk_b64) == pk );
REQUIRE( oxenmq::from_base64(pk_b64.begin(), pk_b64.end()) == pk );
std::string pk_b64_again, pk_again;
oxenmq::to_base64(pk.begin(), pk.end(), std::back_inserter(pk_b64_again));
oxenmq::from_base64(pk_b64.begin(), pk_b64.end(), std::back_inserter(pk_again));
REQUIRE( pk_b64_again == pk_b64 );
REQUIRE( pk_again == pk );
// In-place decoding and truncation via returned iterator:
std::string some_b64 = "SGVsbG8=";
some_b64.erase(oxenmq::from_base64(some_b64.begin(), some_b64.end(), some_b64.begin()), some_b64.end());
REQUIRE( some_b64 == "Hello" );
// Test the returned iterator from encoding
std::string hellob64;
*oxenmq::to_base64(some_b64.begin(), some_b64.end(), std::back_inserter(hellob64))++ = '!';
REQUIRE( hellob64 == "SGVsbG8=!" );
std::vector<std::byte> bytes{{std::byte{0}, std::byte{255}}};
std::basic_string_view<std::byte> b{bytes.data(), bytes.size()};
REQUIRE( oxenmq::to_base64(b) == "AP8=" );
bytes.resize(4);
bytes[0] = std::byte{'/'}; bytes[1] = std::byte{'w'}; bytes[2] = std::byte{'A'}; bytes[3] = std::byte{'='};
std::basic_string_view<std::byte> b64_bytes{bytes.data(), bytes.size()};
REQUIRE( oxenmq::is_base64(b64_bytes) );
REQUIRE( oxenmq::from_base64(b64_bytes) == "\xff\x00"sv );
REQUIRE( oxenmq::to_base64_size(1) == 4 );
REQUIRE( oxenmq::to_base64_size(2) == 4 );
REQUIRE( oxenmq::to_base64_size(3) == 4 );
REQUIRE( oxenmq::to_base64_size(4) == 8 );
REQUIRE( oxenmq::to_base64_size(5) == 8 );
REQUIRE( oxenmq::to_base64_size(6) == 8 );
REQUIRE( oxenmq::to_base64_size(30) == 40 );
REQUIRE( oxenmq::to_base64_size(31) == 44 );
REQUIRE( oxenmq::to_base64_size(32) == 44 );
REQUIRE( oxenmq::to_base64_size(33) == 44 );
REQUIRE( oxenmq::to_base64_size(100) == 136 );
REQUIRE( oxenmq::from_base64_size(136) == 102 ); // Not symmetric because we don't know the last two are padding
REQUIRE( oxenmq::from_base64_size(134) == 100 ); // Unpadded
REQUIRE( oxenmq::from_base64_size(44) == 33 );
REQUIRE( oxenmq::from_base64_size(43) == 32 );
REQUIRE( oxenmq::from_base64_size(42) == 31 );
REQUIRE( oxenmq::from_base64_size(40) == 30 );
REQUIRE( oxenmq::from_base64_size(8) == 6 );
REQUIRE( oxenmq::from_base64_size(7) == 5 );
REQUIRE( oxenmq::from_base64_size(6) == 4 );
REQUIRE( oxenmq::from_base64_size(4) == 3 );
REQUIRE( oxenmq::from_base64_size(3) == 2 );
REQUIRE( oxenmq::from_base64_size(2) == 1 );
}
TEST_CASE("transcoding", "[decoding][encoding][base32z][hex][base64]") {
// Decoders:
oxenmq::base64_decoder in64{pk_b64.begin(), pk_b64.end()};
oxenmq::base32z_decoder in32z{pk_b32z.begin(), pk_b32z.end()};
oxenmq::hex_decoder in16{pk_hex.begin(), pk_hex.end()};
// Transcoders:
oxenmq::base32z_encoder b64_to_b32z{in64, in64.end()};
oxenmq::base32z_encoder hex_to_b32z{in16, in16.end()};
oxenmq::hex_encoder b64_to_hex{in64, in64.end()};
oxenmq::hex_encoder b32z_to_hex{in32z, in32z.end()};
oxenmq::base64_encoder hex_to_b64{in16, in16.end()};
oxenmq::base64_encoder b32z_to_b64{in32z, in32z.end()};
// These ones are stupid, but should work anyway:
oxenmq::base64_encoder b64_to_b64{in64, in64.end()};
oxenmq::base32z_encoder b32z_to_b32z{in32z, in32z.end()};
oxenmq::hex_encoder hex_to_hex{in16, in16.end()};
// Decoding to bytes:
std::string x;
auto xx = std::back_inserter(x);
std::copy(in64, in64.end(), xx);
REQUIRE( x == pk );
x.clear();
std::copy(in32z, in32z.end(), xx);
REQUIRE( x == pk );
x.clear();
std::copy(in16, in16.end(), xx);
REQUIRE( x == pk );
// Transcoding
x.clear();
std::copy(b64_to_hex, b64_to_hex.end(), xx);
CHECK( x == pk_hex );
x.clear();
std::copy(b64_to_b32z, b64_to_b32z.end(), xx);
CHECK( x == pk_b32z );
x.clear();
std::copy(b64_to_b64, b64_to_b64.end(), xx);
CHECK( x == pk_b64 );
x.clear();
std::copy(b32z_to_hex, b32z_to_hex.end(), xx);
CHECK( x == pk_hex );
x.clear();
std::copy(b32z_to_b32z, b32z_to_b32z.end(), xx);
CHECK( x == pk_b32z );
x.clear();
std::copy(b32z_to_b64, b32z_to_b64.end(), xx);
CHECK( x == pk_b64 );
x.clear();
std::copy(hex_to_hex, hex_to_hex.end(), xx);
CHECK( x == pk_hex );
x.clear();
std::copy(hex_to_b32z, hex_to_b32z.end(), xx);
CHECK( x == pk_b32z );
x.clear();
std::copy(hex_to_b64, hex_to_b64.end(), xx);
CHECK( x == pk_b64 );
// Make a big chain of conversions
oxenmq::base32z_encoder it1{in64, in64.end()};
oxenmq::base32z_decoder it2{it1, it1.end()};
oxenmq::base64_encoder it3{it2, it2.end()};
oxenmq::base64_decoder it4{it3, it3.end()};
oxenmq::hex_encoder it5{it4, it4.end()};
x.clear();
std::copy(it5, it5.end(), xx);
CHECK( x == pk_hex );
// No-padding b64 encoding:
oxenmq::base64_encoder b64_nopad{pk.begin(), pk.end(), false};
x.clear();
std::copy(b64_nopad, b64_nopad.end(), xx);
CHECK( x == pk_b64.substr(0, pk_b64.size()-1) );
}
TEST_CASE("std::byte decoding", "[decoding][hex][base32z][base64]") {
// Decoding to std::byte is a little trickier because you can't assign to a byte without an
// explicit cast, which means we have to properly detect that output is going to a std::byte
// output.
// hex
auto b_in = "ff42"s;
std::vector<std::byte> b_out;
oxenmq::from_hex(b_in.begin(), b_in.end(), std::back_inserter(b_out));
REQUIRE( b_out == std::vector{std::byte{0xff}, std::byte{0x42}} );
b_out.emplace_back();
oxenmq::from_hex(b_in.begin(), b_in.end(), b_out.begin() + 1);
REQUIRE( b_out == std::vector{std::byte{0xff}, std::byte{0xff}, std::byte{0x42}} );
oxenmq::from_hex(b_in.begin(), b_in.end(), b_out.data());
REQUIRE( b_out == std::vector{std::byte{0xff}, std::byte{0x42}, std::byte{0x42}} );
// base32z
b_in = "yojky"s;
b_out.clear();
oxenmq::from_base32z(b_in.begin(), b_in.end(), std::back_inserter(b_out));
REQUIRE( b_out == std::vector{std::byte{0x04}, std::byte{0x12}, std::byte{0xa0}} );
b_out.emplace_back();
oxenmq::from_base32z(b_in.begin(), b_in.end(), b_out.begin() + 1);
REQUIRE( b_out == std::vector{std::byte{0x04}, std::byte{0x04}, std::byte{0x12}, std::byte{0xa0}} );
oxenmq::from_base32z(b_in.begin(), b_in.end(), b_out.data());
REQUIRE( b_out == std::vector{std::byte{0x04}, std::byte{0x12}, std::byte{0xa0}, std::byte{0xa0}} );
// base64
b_in = "yojk"s;
b_out.clear();
oxenmq::from_base64(b_in.begin(), b_in.end(), std::back_inserter(b_out));
REQUIRE( b_out == std::vector{std::byte{0xca}, std::byte{0x88}, std::byte{0xe4}} );
b_out.emplace_back();
oxenmq::from_base64(b_in.begin(), b_in.end(), b_out.begin() + 1);
REQUIRE( b_out == std::vector{std::byte{0xca}, std::byte{0xca}, std::byte{0x88}, std::byte{0xe4}} );
oxenmq::from_base64(b_in.begin(), b_in.end(), b_out.data());
REQUIRE( b_out == std::vector{std::byte{0xca}, std::byte{0x88}, std::byte{0xe4}, std::byte{0xe4}} );
}
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