--- a/core-javascript/core-javascript-work/tutorial.js	Mon Oct 31 19:58:29 2011 +0000
+++ b/core-javascript/core-javascript-work/tutorial.js	Mon Oct 31 20:09:50 2011 +0000
@@ -1,20 +1,18 @@
-var telltail = 'global';
-
-var TEST = function(title, code){
-    print( 'Testing: ' + title );
-    code();  
-};
+// [Rhino] $ js -f testtools.js -f tutorial.js
+// [JSDB] $ jsdb -load testtools.js -load tutorial.js
 
-var assert = function(arg){
-    if(!arg){
-        ddt();
-    }  
-};
+// start warm-up
+TEST('warm-up', function()
+{
+    assert( '0' == 0 );
+    assert ( 0 == '' );
+    assert( '0' != '' );
 
-'0' == 0 || ddt;
-0 == '' || ddt;
-'0' != '' || ddt;
-NaN != NaN || ddt;
+    var a = NaN;
+    assert( a != a );
+
+});
+// end warm-up
 
 
 // start closures
@@ -28,13 +26,13 @@
             return value;
         };
         var set = function(new_value){
-            value = new_value;            
+            value = new_value;
         };
 
         return {
             get: get,
             set: set
-        };        
+        };
     };
 
     // Create and unpack two get-set pairs.
@@ -70,14 +68,14 @@
 
     var default_this = return_this();
     assert( default_this.telltail === 'global' );
-    
+
     var obj = {};
     obj.return_this = return_this;
     assert( obj.return_this === return_this );
-    
+
     assert( obj.return_this() === obj );
     assert( obj['return_this']() === obj );
-    
+
     assert( return_this.call(obj) === obj );
     assert( return_this.apply(obj) === obj );
 
@@ -121,7 +119,7 @@
 
     assert( typeof array === 'object' );
     assert( '' + obj === '[object Object]' );
-    
+
     assert( obj.toString() === '[object Object]' );
 
     var object_toString = obj.toString;
@@ -139,17 +137,17 @@
     var return_arguments = function(){
         return arguments;
     };
-    
+
     var my_arguments = return_arguments(0, 1);
-    
+
     assert( my_arguments.length === 2 );
-    
+
     assert( my_arguments[0]  === 0 );
     assert( my_arguments[1]  === 1 );
-    
+
     assert( '' + my_arguments === '[object Object]' );
     assert( '' + [0, 1] === '0,1' );
-    
+
     var array_slice = [].slice;
     var my_arguments_fixed = array_slice.call( my_arguments );