How to use the cobbler.web.templatetags.site.TestVar function in cobbler

def create_var(self, value):
        return TestVar(value)

def setUp(self):
        self.true = TestVar(True)
        self.false = TestVar(False)
        self.high = TestVar(9000)
        self.low = TestVar(1)

def create_var(self, value):
        return TestVar(value)

def setUp(self):
        self.true = TestVar(True)
        self.false = TestVar(False)
        self.high = TestVar(9000)
        self.low = TestVar(1)

def test_in(self):
        list_ = TestVar([1, 2, 3])
        invalid_list = TestVar(None)
        self.assertCalc(In(self.low, list_))
        self.assertCalcFalse(In(self.low, invalid_list))

def setUp(self):
        self.true = TestVar(True)
        self.false = TestVar(False)
        self.high = TestVar(9000)
        self.low = TestVar(1)

def setUp(self):
        self.true = TestVar(True)
        self.false = TestVar(False)
        self.high = TestVar(9000)
        self.low = TestVar(1)