Add google-endpoints to third_party/.

third_party/google-endpoints/Crypto/SelfTest/Util/test_Counter.py

+# -*- coding: utf-8 -*-
+#
+#  SelfTest/Util/test_Counter: Self-test for the Crypto.Util.Counter module
+#
+# Written in 2009 by Dwayne C. Litzenberger <dlitz@dlitz.net>
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+"""Self-tests for Crypto.Util.Counter"""
+
+__revision__ = "$Id$"
+
+import sys
+if sys.version_info[0] == 2 and sys.version_info[1] == 1:
+    from Crypto.Util.py21compat import *
+from Crypto.Util.py3compat import *
+
+import unittest
+
+class CounterTests(unittest.TestCase):
+    def setUp(self):
+        global Counter
+        from Crypto.Util import Counter
+
+    def test_BE_shortcut(self):
+        """Big endian, shortcut enabled"""
+        c = Counter.new(128)
+        self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
+        c = Counter.new(128, little_endian=False)
+        self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
+        c = Counter.new(128, disable_shortcut=False)
+        self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
+        c = Counter.new(128, little_endian=False, disable_shortcut=False)
+        self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
+
+    def test_LE_shortcut(self):
+        """Little endian, shortcut enabled"""
+        c = Counter.new(128, little_endian=True)
+        self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
+        c = Counter.new(128, little_endian=True, disable_shortcut=False)
+        self.assertEqual(c.__PCT_CTR_SHORTCUT__,True) # assert_
+
+    def test_BE_no_shortcut(self):
+        """Big endian, shortcut disabled"""
+        c = Counter.new(128, disable_shortcut=True)
+        self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
+        c = Counter.new(128, little_endian=False, disable_shortcut=True)
+        self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
+
+    def test_LE_no_shortcut(self):
+        """Little endian, shortcut disabled"""
+        c = Counter.new(128, little_endian=True, disable_shortcut=True)
+        self.assertRaises(AttributeError, getattr, c, '__PCT_CTR_SHORTCUT__')
+
+    def test_BE_defaults(self):
+        """128-bit, Big endian, defaults"""
+        c = Counter.new(128)
+        self.assertEqual(1, c.next_value())
+        self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"), c())
+        self.assertEqual(2, c.next_value())
+        self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02"), c())
+        for i in xrange(3, 256):
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")+bchr(i), c())
+        self.assertEqual(256, c.next_value())
+        self.assertEqual(b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00"), c())
+
+    def test_LE_defaults(self):
+        """128-bit, Little endian, defaults"""
+        c = Counter.new(128, little_endian=True)
+        self.assertEqual(1, c.next_value())
+        self.assertEqual(b("\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
+        self.assertEqual(2, c.next_value())
+        self.assertEqual(b("\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
+        for i in xrange(3, 256):
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i)+b("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
+        self.assertEqual(256, c.next_value())
+        self.assertEqual(b("\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), c())
+
+    def test_BE8_wraparound(self):
+        """8-bit, Big endian, wraparound"""
+        c = Counter.new(8)
+        for i in xrange(1, 256):
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i), c())
+        self.assertRaises(OverflowError, c.next_value)
+        self.assertRaises(OverflowError, c)
+        self.assertRaises(OverflowError, c.next_value)
+        self.assertRaises(OverflowError, c)
+
+    def test_LE8_wraparound(self):
+        """8-bit, Little endian, wraparound"""
+        c = Counter.new(8, little_endian=True)
+        for i in xrange(1, 256):
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i), c())
+        self.assertRaises(OverflowError, c.next_value)
+        self.assertRaises(OverflowError, c)
+        self.assertRaises(OverflowError, c.next_value)
+        self.assertRaises(OverflowError, c)
+
+    def test_BE8_wraparound_allowed(self):
+        """8-bit, Big endian, wraparound with allow_wraparound=True"""
+        c = Counter.new(8, allow_wraparound=True)
+        for i in xrange(1, 256):
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i), c())
+        self.assertEqual(0, c.next_value())
+        self.assertEqual(b("\x00"), c())
+        self.assertEqual(1, c.next_value())
+
+    def test_LE8_wraparound_allowed(self):
+        """8-bit, Little endian, wraparound with allow_wraparound=True"""
+        c = Counter.new(8, little_endian=True, allow_wraparound=True)
+        for i in xrange(1, 256):
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i), c())
+        self.assertEqual(0, c.next_value())
+        self.assertEqual(b("\x00"), c())
+        self.assertEqual(1, c.next_value())
+
+    def test_BE8_carry(self):
+        """8-bit, Big endian, carry attribute"""
+        c = Counter.new(8)
+        for i in xrange(1, 256):
+            self.assertEqual(0, c.carry)
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i), c())
+        self.assertEqual(1, c.carry)
+
+    def test_LE8_carry(self):
+        """8-bit, Little endian, carry attribute"""
+        c = Counter.new(8, little_endian=True)
+        for i in xrange(1, 256):
+            self.assertEqual(0, c.carry)
+            self.assertEqual(i, c.next_value())
+            self.assertEqual(bchr(i), c())
+        self.assertEqual(1, c.carry)
+
+def get_tests(config={}):
+    from Crypto.SelfTest.st_common import list_test_cases
+    return list_test_cases(CounterTests)
+
+if __name__ == '__main__':
+    suite = lambda: unittest.TestSuite(get_tests())
+    unittest.main(defaultTest='suite')
+
+# vim:set ts=4 sw=4 sts=4 expandtab: