public void getNumTest()
{
//good
Assert.AreEqual(convCtrl.getNum("50"), 50);
// Assert.AreEqual(convCtrl.getNum("מאה"), 100);
//bad
Assert.AreEqual(convCtrl.getNum("גדגדגדגד"), -1);
//sad
Assert.AreEqual(convCtrl.getNum(int.MinValue.ToString()), -1);
}