def test_binary_search_odd_number_elements(self):
array = [20, 30, 40, 50, 99]
binary = BinarySearch(array)
self.assertIsNotNone(binary.array)
self.assertEqual(len(binary.array), 5)
self.assertEqual(binary.binary_search_algorithm(0, len(binary.array) - 1, 99), 4)
def test_binary_search_one_element(self):
array = [20]
binary = BinarySearch(array)
self.assertIsNotNone(binary.array)
self.assertEqual(len(binary.array), 1)
self.assertEqual(binary.binary_search_algorithm(0, len(binary.array) - 1, 20), 0)
def test_binary_search_empty_array(self):
array = random.sample(range(1, 100), 0)
binary = BinarySearch(array)
self.assertIsNotNone(binary.array)
self.assertEqual(len(binary.array), 0)
binary.array.sort()
self.assertEqual(binary.binary_search_algorithm(0, len(binary.array) - 1, 3), -1)