DateTime, get all dates for the current week?

So, I’ve been trying to get all dates with DateTime using this script, but it throws a nullreference at line 17. Any idea why? I’ve only just now started looking at DateTime, so maybe I’m misunderstanding some stuff here.

Here’s the script( called Test.js ) :

#pragma strict
import System;
import System.Globalization;

var testArr: testClass[];

function Start()
{
	testArr = new testClass[7];
	
	for(var i:int=0;i<7;i++)
	{
		
		var tmpWeekStart: DateTime = DateTime.Now;
		tmpWeekStart.AddDays(-Convert.ToInt32(DateTime.Now.DayOfWeek));
		
		testArr*.testDate = tmpWeekStart.AddDays(i);*

_ print(testArr*.testDate);_
_
}_
_
}*_

function Update () {

}

class testClass
{
* var testDate: DateTime;*
}

You need to create an instance of your testClass - creating the array just allocates space for it

   testArr *= new testClass();*

Consider naming types with a capital first letter for convention.