//
// test relational operators.
//
// assumes constructors work.
//

#include <iostream.h>
#include <stdlib.h>		// has EXIT_SUCCESS
#include "lstring.h"

#include "testsub.h"		// has functions for testing


// apply all relational operators to pair of strings; print results.
void doRelationals(const char *s1In, const char *s2In, 
		   const lstring & s1, const lstring & s2) {
  cout << "comparing " << s1In << " and " << s2In << ":  ";
  if (s1 == s2) cout << "== ";
  if (s1 != s2) cout << "!= ";
  if (s1 < s2) cout << "< ";
  if (s1 > s2) cout << "> ";
  if (s1 <= s2) cout << "<= ";
  if (s1 >= s2) cout << ">= ";
  cout << endl;
  return;
}

int main(void) {

  lstring empty;
  lstring x('x');
  lstring xy("xy");
  lstring y('y');
  lstring yz("yz");
  lstring abcd("abcd");
  lstring abcef("abcef");

  doRelationals("''", "''", empty, empty);
  doRelationals("''", "'x'", empty, x);
  doRelationals("'x'", "'x'", x, x);
  doRelationals("'x'", "'y'", x, y);
  doRelationals("'abcd'", "'abcd'", abcd, abcd);
  doRelationals("'x'", "'xy'", x, xy);
  doRelationals("'xy'", "'x'", xy, x);
  doRelationals("'xy'", "'yz'", xy, yz);
  doRelationals("'abcd'", "'abcef'", abcd, abcef);

  cout << "That's all, folks!\n";

  return EXIT_SUCCESS;
}