package tests;

class tclass_base
{
  var value;
  function tclass_base(v) { value = v; }
  function toString() { return string(value); }
}

class tclass: tclass_base
{
  function tclass(v) { tclass_base(v); }
}

function basics_test() {
  var v = new tclass(4);
  var v_base = new tclass_base(4);
  if (!(v instanceof tclass))  throw "instanceof 1";
  if (!(v instanceof tclass_base))  throw "instanceof 2";
  if (v_base instanceof tclass)  throw "instanceof 3";
  print("basics test passed! \n");
}

function string_test() 
{
    var v = new tclass(4);
    
    if ( "1" + 2 + "3" != "123" ) throw "default toString in assignmet";
    if ( "1" + 2 + "3" + v != "1234" ) throw "user defined toString in assignmet";

    var s = new string("0123456789");
    if( s[3] != '3' ) throw "item";
    
    // substr test            
    if ( "0123456789".substr(2,3) != "234" ) throw "substr 1";
    if ( "0123456789".substr(2,10) != "23456789" ) throw "substr 2";
    if ( "0123456789".substr(-2,8) != "01234567" ) throw "substr 3";
    if ( "0123456789".substr(2,-8) != "" ) throw "substr 4";
  
    // slice test  
    if ( "0123456789".slice(2,6) != "2345" ) throw "slice 1";
    if ( "0123456789".slice(2,-2) != "234567" ) throw "slice 2";
    
    // case tests
    if ( "Hello World".to_upper() != "HELLO WORLD" ) throw "to_upper";  
    if ( "Hello World".to_lower() != "hello world" ) throw "to_lover";  
    // case test /russian/
    //locale("Russian");
//    if ( "橡椏弳 惕