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# -*- coding: utf-8 -*-
#
# Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tests prime functions."""
import unittest
import rsa.prime
class PrimeTest(unittest.TestCase):
def test_is_prime(self):
"""Test some common primes."""
# Test some trivial numbers
self.assertFalse(rsa.prime.is_prime(-1))
self.assertFalse(rsa.prime.is_prime(0))
self.assertFalse(rsa.prime.is_prime(1))
self.assertTrue(rsa.prime.is_prime(2))
self.assertFalse(rsa.prime.is_prime(42))
self.assertTrue(rsa.prime.is_prime(41))
# Test some slightly larger numbers
self.assertEqual(
[907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997],
[x for x in range(901, 1000) if rsa.prime.is_prime(x)]
)
# Test around the 50th millionth known prime.
self.assertTrue(rsa.prime.is_prime(982451653))
self.assertFalse(rsa.prime.is_prime(982451653 * 961748941))
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