def test_empty_array(self):
data = []
self.assertFalse(has_duplicates(data))
self.assertEqual(sorted(get_duplicates_2(data)), [])
def test_single_duplicated_elem(self):
data = [4, 4, 4, 4]
self.assertTrue(has_duplicates(data))
self.assertEqual(sorted(get_duplicates_2(data)), [4])
def test_many_elements_many_duplicates(self):
data = [2, -3, 0, 2, 1, -3, 4, 1, -1, 2]
self.assertTrue(has_duplicates(data))
self.assertEqual(sorted(get_duplicates_2(data)), [-3, 1, 2])
def test_many_elements_one_duplicate(self):
data = [2, -3, 0, 2, 7, 1]
self.assertTrue(has_duplicates(data))
self.assertEqual(sorted(get_duplicates_2(data)), [2])
def test_many_elements(self):
data = [2, 1, -4, 7]
self.assertFalse(has_duplicates(data))
self.assertFalse(sorted(get_duplicates_2(data)), [])
def test_single_element(self):
data = [1]
self.assertFalse(has_duplicates(data))
self.assertEqual(sorted(get_duplicates_2(data)), [])