base64.cc

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/*
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Copyright (c) 2022, Stable Cloud Computing, Inc.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
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   this software without specific prior written permission.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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*/
#include <gtest/gtest.h>
#include <stdint.h>
#include <iostream>
#include <string>
#include <vector>
#include <encode/base64.h>
 
using std::string;
using std::cout;
using std::endl;
using scc::encode::Base64;
 
static string b64_allchar_enc =
"AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4"
"OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3Bx"
"cnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmq"
"q6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj"
"5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==";
 
static string b64_test1 = "This is a test     with some space";
static string b64_test1_enc = "VGhpcyBpcyBhIHRlc3QgICAgIHdpdGggc29tZSBzcGFjZQ==";
static string b64_test2 = "     ";
static string b64_test2_enc = "ICAgICA=";
static string b64_test3 = "hit";
static string b64_test3_enc = "aGl0";
 
TEST(base64, zero)
{
    string z;
    ASSERT_EQ(Base64::str_to_base64(z).size(), 0);
    ASSERT_EQ(Base64::base64_to_str(z).size(), 0);
}
 
TEST(base64, teststrings)
{
    ASSERT_EQ(Base64::str_to_base64(b64_test1), b64_test1_enc);
    ASSERT_EQ(Base64::base64_to_str(b64_test1_enc), b64_test1);
    ASSERT_EQ(Base64::str_to_base64(b64_test2), b64_test2_enc);
    ASSERT_EQ(Base64::base64_to_str(b64_test2_enc), b64_test2);
    ASSERT_EQ(Base64::str_to_base64(b64_test3), b64_test3_enc);
    ASSERT_EQ(Base64::base64_to_str(b64_test3_enc), b64_test3);
}
 
TEST(base64, allchars)
{
    std::vector<char> allvect;
    std::string allstr;
 
    for (int i = 0; i < 256; i++)
    {
        allvect.push_back(i);
        allstr.push_back(i);
    }
 
    std::string s;
    Base64::base64_encode(allvect, s);
    cout << "allvect encoded: " << s << " size: " << s.size() << endl;
    ASSERT_EQ(s, b64_allchar_enc);
 
    s = Base64::str_to_base64(allstr);
    cout << "allstr encoded : " << s << " size: " << s.size() << endl;
    ASSERT_EQ(s, b64_allchar_enc);
 
    s = Base64::base64_to_str(b64_allchar_enc);
    ASSERT_EQ(s, allstr);
 
    std::vector<char> v;
    Base64::base64_decode(b64_allchar_enc, v);
    ASSERT_EQ(v, allvect);
}
 
TEST(base64, teststrings_url)
{
 
    auto urltest = [] (const string& encs)
    {
        return encs.find_first_of("+/=") == string::npos;
    };
 
    auto urlall= Base64::base64_to_base64url(b64_allchar_enc);
    cout << "all char base64:" << endl << b64_allchar_enc << endl;
    cout << "all char base64url:" << endl << urlall << endl;
    ASSERT_TRUE(urltest(urlall));
    auto baseall = Base64::base64url_to_base64(urlall);
    ASSERT_EQ(baseall, b64_allchar_enc);
 
    auto url1 = Base64::base64_to_base64url(b64_test1_enc);
    ASSERT_TRUE(urltest(url1));
    auto base1 = Base64::base64url_to_base64(url1);
    ASSERT_EQ(base1, b64_test1_enc);
 
    auto url2 = Base64::base64_to_base64url(b64_test2_enc);
    ASSERT_TRUE(urltest(url2));
    auto base2 = Base64::base64url_to_base64(url2);
    ASSERT_EQ(base2, b64_test2_enc);
 
    auto url3 = Base64::base64_to_base64url(b64_test3_enc);
    ASSERT_TRUE(urltest(url3));
    auto base3 = Base64::base64url_to_base64(url3);
    ASSERT_EQ(base3, b64_test3_enc);
}