Merge branch 'bsr_newtests'

Author: liammclennan

topics/about_asserts.js

@@ -2,7 +2,7 @@
 module("About Asserts (topics/about_asserts.js)");
 
 test("ok", function() {
-    ok(false, 'what will satisfy the ok assertion?');
+    ok(__, 'what will satisfy the ok assertion?');
 });
 
 test("not", function() {

topics/about_functions_and_closure.js

@@ -45,3 +45,31 @@ test("arguments array", function() {
     equals(add(1,2,3,4,5), 15, "add 1,2,3,4,5");
     equals(add(4,7,-2), 9, "add 1,2,3,4,5");
 });
+
+test("using call to invoke function",function(){
+    var invokee = function( message ){
+        return this + message;    
+    };
+    
+    //another way to invoke a function is to use the call function which allows 
+    //you to set the callers "this" context.  Call can take any number of arguments: 
+    //the first one is always the context that this should be set to in the called
+    //function, and the arguments to be sent to the function,multiple arguments are separated by commas.
+    var result = invokee.call("I am this!", "Where did it come from?");
+        
+    equals(result,__,"what will the value of invokee's this be?");
+});
+
+test("using apply to invoke function",function(){
+    var invokee = function( message1, message2 ){
+        return this + message1 + message2;    
+    };
+    
+    //similar to the call function is the apply function.  Apply only has two
+    //arguments:  the first is the context that this should be set to in the called
+    //function and and array of arguments to be passed into the called function.
+    var result = invokee.apply("I am this!", ["I am arg1","I am arg2"]);
+        
+    equals(result,__,"what will the value of invokee's this be?");
+});
+