int main() {
// test for small append
std::string str1 = "abc";
std::string str2 = "def";
const char* str3 = "efg";
char c4 = 'h';
const char* str5 = "ijklmn";
VarString vs1;
vs1.append(str1).append(str2).append(str3).append(c4).append(str5, 2);
assert(vs1.toString() == str1 + str2 + str3 + c4 + "ij");
// test for massive append
std::string answer = "";
int round = 100;
int min = 200;
int max = 2000;
int round_id = 0;
VarString vs2;
while(round_id < round) {
std::string str;
if (round_id % 2) {
str = random_string(rand() % (max - min) + min);
} else {
str = random_string(rand() % (min - 10) + 10);
}
vs2.append(str);
answer += str;
round_id ++;
}
assert(vs2.toString() == answer);
// test for other function
{
std::string str1 = random_string(10);
std::string str2 = str1.substr(0, str1.size() - 1);
VarString vs;
vs.append(str1);
vs.drop();
assert(vs.toString() == str2);
vs.clear();
vs.append(str1);
int len = 5;
std::string str3 = str1.substr(0, str1.size() - len);
vs.drop(len);
assert(vs.toString() == str3);
}
std::cout << VarString::format("This is an integer %d", 2) << std::endl;
}
