from django.template.defaultfilters import default_if_none
from django.test import SimpleTestCase


class FunctionTests(SimpleTestCase):

    def test_value(self):
        self.assertEqual(default_if_none("val", 'default'), 'val')

    def test_none(self):
        self.assertEqual(default_if_none(None, 'default'), 'default')

    def test_empty_string(self):
        self.assertEqual(default_if_none('', 'default'), '')