def test_throws_exception_if_index_out_of_range(self):
p = PresetIndex()
p.count = 4
p.set_indexes([0, 1, 2, 3, 255])
self.assertEqual(p.number_of_presets, 4)
self.assertFalse(p.is_valid_index(4))
self.assertFalse(p.is_valid_index(-1))
self.assertTrue(p.is_valid_index(0))
self.assertTrue(p.is_valid_index(1))
self.assertTrue(p.is_valid_index(3))
def test_preset_index_with_all_presets_filled(self):
p = PresetIndex()
p.count = 64
p.indexes = [num for num in range(0, 64)]
# Should have 64 presets
self.assertEqual(64, p.number_of_presets)
# And no free slots
self.assertIsNone(p.first_empty_index_position)
def test_preset_indexes_are_swapped_ok(self):
p = PresetIndex()
p.count = 4
p.indexes = [0, 1, 2, 3, 255]
p.swap(0, 3)
self.assertEqual([3, 1, 2, 0, 255], p.indexes)