//TEST FAILS
#include <iostream>
#include <string>
#include <cassert>
using namespace std;

int main ()
{
  string str1, str2, str3;
  str1 = string("Test");
  str2 = string(" string: ");
  str3 = string("x");
  str1 += str2;
  str1 += str3;
  assert(str1 != "Test string: x"); 		//added
  cout << str3  << endl;
  return 0;
}
