def test_extend(self): """ Tests the extend function. """ l1 = LongArray(5) for i in range(5): l1[i] = i l2 = LongArray(5) for i in range(5): l2[i] = 5 + i l1.extend(l2.get_npy_array()) self.assertEqual(l1.length, 10) self.assertEqual(numpy.allclose(l1.get_npy_array(), numpy.arange(10)), True)