import decimal
import unittest

from lesana import templating


class testFilters(unittest.TestCase):
    def setUp(self):
        pass

    def tearDown(self):
        pass

    def test_to_yaml(self):
        res = templating.to_yaml(None)
        self.assertIsInstance(res, str)
        self.assertEqual(res, 'null')

        s = "A short string"
        res = templating.to_yaml(s)
        self.assertEqual(res, s)

        s = """
        A long, multiline
        string
        with multiple
        lines
        """
        res = templating.to_yaml(s)
        self.assertIsInstance(res, str)
        self.assertIn('"', res)
        self.assertIn('\n', res)

        res = templating.to_yaml(10)
        self.assertEqual(res, '10')

        res = templating.to_yaml(decimal.Decimal('10.1'))
        self.assertEqual(res, "'10.1'")


if __name__ == '__main__':
    unittest.main()