import unittest

class Test_lihih(unittest.TestCase):
    def test_lihih(self):
        self.assertEqual(lihih([]), 0)
        self.assertEqual(lihih([1]), 1)
        self.assertEqual(lihih([1, 2, 3, 4, 5]), 3)
        self.assertEqual(lihih([2, 0, 4]), 0)


class Test_soda(unittest.TestCase):
    def test_soda(self):
        self.assertEqual(soda([]), [])
        self.assertEqual(soda([2, 1]), [2])
        self.assertEqual(soda([1, 3, 5]), [])
        self.assertEqual(soda([2, 4, 6]), [2, 4, 6])
        self.assertEqual(soda([2, 4, 6]), [2, 4, 6])


class Test_vsota(unittest.TestCase):
    def test_vsota(self):
        self.assertEqual(vsota([]), 0)
        self.assertEqual(vsota([1]), 1)
        self.assertEqual(vsota([5, 4, 3, 2, 1]), 15)
        self.assertEqual(vsota([1, -1, 2, -2, 3]), 3)

class Test_vsota_sodih(unittest.TestCase):
    def test_vsota_sodih(self):
        self.assertEqual(vsota_sodih([]), 0)
        self.assertEqual(vsota_sodih([2]), 2)
        self.assertEqual(vsota_sodih([1,2,3,4,5,6]), 12)


class Test_vsota_lihih_mest(unittest.TestCase):
    def test_vsota_lihih_mest(self):
        self.assertEqual(vsota_lihih_mest([]), 0)
        self.assertEqual(vsota_lihih_mest([1]), 0)
        self.assertEqual(vsota_lihih_mest([1,2,3,4,5]), 6)
        self.assertEqual(vsota_lihih_mest([2,4,8,5,8]), 9)

class Test_zacetnica(unittest.TestCase):
    def test_zacetnica(self):
        self.assertEqual(zacetnica([], "a"), [])
        self.assertEqual(zacetnica(["beti"], "a"), [])
        self.assertEqual(zacetnica(["ana", "beti", "anja"], "a"), ["ana", "anja"])
        self.assertEqual(zacetnica(["avto", "test", "miza", "tipka"], "t"), ["test", "tipka"])


class Test_obrni(unittest.TestCase):
    def test_obrni(self):
        self.assertEqual(obrni([]), [])
        self.assertEqual(obrni(["a"]), ["a"])
        self.assertEqual(obrni([1,2,3]), [3,2,1])
        self.assertEqual(obrni([9,8,7,6,5,4,1]),[1,4,5,6,7,8,9])

class Test_narascajoce(unittest.TestCase):
    def test_narascajoce(self):
        self.assertTrue(narascajoce([]))
        self.assertTrue(narascajoce([1]))
        self.assertEqual(narascajoce([1,2,3]), True)
        self.assertEqual(narascajoce([1,0]), False)
        self.assertFalse(narascajoce([1,1,1,1]))
        self.assertFalse(narascajoce([1,2,3,1,2,3]))

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