libcruft-util/test/encode/base.cpp

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#include "../../tap.hpp"
#include "../../encode/base.hpp"
///////////////////////////////////////////////////////////////////////////////
static constexpr char input[] = "foobar";
///////////////////////////////////////////////////////////////////////////////
// test vectors from rfc4648
template <int Size>
struct output { static const char *value[std::size (input)]; };
//-----------------------------------------------------------------------------
template <>
const char* output<64>::value[] = {
"",
"Zg==",
"Zm8=",
"Zm9v",
"Zm9vYg==",
"Zm9vYmE=",
"Zm9vYmFy",
};
//-----------------------------------------------------------------------------
template <>
const char* output<32>::value[] {
"",
"MY======",
"MZXQ====",
"MZXW6===",
"MZXW6YQ=",
"MZXW6YTB",
"MZXW6YTBOI======"
};
//-----------------------------------------------------------------------------
#if 0
template <>
const char* output<32h>::value[] {
"", "CO======", "CPNG====", "CPNMU===", "CPNMUOG=", "CPNMUOJ1", "CPNMUOJ1E8======",
}
#endif
//-----------------------------------------------------------------------------
template <>
const char *output<16>::value[] = {
"",
"66",
"666F",
"666F6F",
"666F6F62",
"666F6F6261",
"666F6F626172"
};
//-----------------------------------------------------------------------------
template <int Size>
const auto output_v = output<Size>::value;
///////////////////////////////////////////////////////////////////////////////
template <int Size>
void
test_size (cruft::TAP::logger &tap)
{
for (unsigned i = 0; i < std::size (input); ++i) {
const auto fragment = cruft::make_view (input, input + i);
std::string encoded;
cruft::encode::base<Size>::encode (
std::back_inserter (encoded),
fragment
);
tap.expect_eq (
encoded,
output_v<Size>[i],
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"{} character base{} encode; '{}' is '{}'", i, Size, encoded, output_v<Size>[i]
);
std::string decoded;
cruft::encode::base<Size>::decode (
std::back_inserter (decoded),
cruft::make_view (encoded)
);
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tap.expect_eq (decoded, fragment, "{} character base{} decode, '{}'", i, Size, decoded);
}
}
///////////////////////////////////////////////////////////////////////////////
int
main ()
{
cruft::TAP::logger tap;
test_size<16> (tap);
test_size<32> (tap);
test_size<64> (tap);
return tap.status ();
}