Given the script. py code:

def add$($a$,$b$)$:

return a$+$b

Given the unit test

script$\_$test.py code:

import script import unittest

class Test$\_$Script:

def test$\_$add$($self$)$:

self.assertEqual$($script$.$add$(2,3),5)$

What is missing from the unit test script$\_$test.py$?$

$$ Test$\_$Script class does not implment unittest.TestCase

$$ TestScript class does not import math

$$ add function should be invoked using self $[$e$.$g$.$ self.add $(2,3)]$

$$ script.py does not import unittest module