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from unittest import TestCase
from unittest.mock import MagicMock, patch, mock_open
from flask_seeder.generator import Generator, resource_path, read_resource, slicer
MOCK_CONTENTS = "line1\nline2"
class TestGenerator(TestCase):
def setUp(self):
self.rnd_mock = MagicMock()
self.generator = Generator(rnd=self.rnd_mock)
def test_generate_raise_NotImplementedError(self):
with self.assertRaises(NotImplementedError):
self.generator.generate()
@patch("flask_seeder.generator.pkg_resources")
def test_resource_path(self, m_pkg):
resource_path("test")
m_pkg.resource_filename.assert_called_once()
@patch("flask_seeder.generator.resource_path", return_value="test")
@patch("flask_seeder.generator.open", mock_open(read_data=MOCK_CONTENTS))
def test_read_resource_return_contents_as_list(self, m_open):
expected = [
"line1",
"line2"
]
result = read_resource("test")
self.assertListEqual(result, expected)
def test_slicer_return_new_string(self):
original = "abcdefghijklmnopqrstuvwxyz"
expected = "ijklmno"
result = slicer(original, "i", "o")
self.assertEqual(result, expected)
def test_slicer_return_None_if_no_slice_is_found(self):
original = "abcdefghijklmnopqrstuvwxyz"
# Inversed start/end
result = slicer(original, "z", "a")
self.assertIsNone(result)
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