1import unittest
 2from secret import validate_recipe, RuinedNikuldenDinnerError
 3from unittest.mock import patch, mock_open
 4
 5class TestNikuldenValidator(unittest.TestCase):
 6    def test_valid_recipe(self):
 7        VALID_FILE_DATA = "Супа от рибена глава със сьонга"
 8        m = mock_open(read_data=VALID_FILE_DATA)
 9        with patch("builtins.open", m):
10            result = validate_recipe("valid_fish_recipe.txt")
11        self.assertTrue(result)
12
13    def test_invalid_recipe(self):
14        INVALID_FILE_DATA = "Пица пеперони"
15        m = mock_open(read_data=INVALID_FILE_DATA)
16        with patch("builtins.open", m):
17            result = validate_recipe("invalid_fish_recipe.txt")
18        self.assertFalse(result)
19
20    def test_bad_recipe_file(self):
21        with patch("builtins.open", side_effect=OSError):
22            with self.assertRaises(RuinedNikuldenDinnerError):
23                validate_recipe("fish_recipe.txt")
24
25        FILE_DATA = "Супа от рибена глава със сьонга"
26        m = mock_open(read_data=FILE_DATA)
27        with patch("builtins.open", m) as mock_file:
28            mock_file.return_value.read.side_effect = IOError
29            with self.assertRaises(RuinedNikuldenDinnerError):
30                validate_recipe("fish_recipe.txt")
31
32
33if __name__ == "__main__":
34    unittest.main()