| #!/usr/bin/env python |
| # |
| # Copyright 2011, Google Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| |
| """Tests for util module.""" |
| |
| |
| import os |
| import random |
| import sys |
| import unittest |
| |
| import set_sys_path # Update sys.path to locate mod_pywebsocket module. |
| |
| from mod_pywebsocket import util |
| |
| |
| _TEST_DATA_DIR = os.path.join(os.path.split(__file__)[0], 'testdata') |
| |
| |
| class UtilTest(unittest.TestCase): |
| """A unittest for util module.""" |
| |
| def test_get_stack_trace(self): |
| self.assertEqual('None\n', util.get_stack_trace()) |
| try: |
| a = 1 / 0 # Intentionally raise exception. |
| except Exception: |
| trace = util.get_stack_trace() |
| self.failUnless(trace.startswith('Traceback')) |
| self.failUnless(trace.find('ZeroDivisionError') != -1) |
| |
| def test_prepend_message_to_exception(self): |
| exc = Exception('World') |
| self.assertEqual('World', str(exc)) |
| util.prepend_message_to_exception('Hello ', exc) |
| self.assertEqual('Hello World', str(exc)) |
| |
| def test_get_script_interp(self): |
| cygwin_path = 'c:\\cygwin\\bin' |
| cygwin_perl = os.path.join(cygwin_path, 'perl') |
| self.assertEqual(None, util.get_script_interp( |
| os.path.join(_TEST_DATA_DIR, 'README'))) |
| self.assertEqual(None, util.get_script_interp( |
| os.path.join(_TEST_DATA_DIR, 'README'), cygwin_path)) |
| self.assertEqual('/usr/bin/perl -wT', util.get_script_interp( |
| os.path.join(_TEST_DATA_DIR, 'hello.pl'))) |
| self.assertEqual(cygwin_perl + ' -wT', util.get_script_interp( |
| os.path.join(_TEST_DATA_DIR, 'hello.pl'), cygwin_path)) |
| |
| def test_hexify(self): |
| self.assertEqual('61 7a 41 5a 30 39 20 09 0d 0a 00 ff', |
| util.hexify('azAZ09 \t\r\n\x00\xff')) |
| |
| |
| class RepeatedXorMaskerTest(unittest.TestCase): |
| """A unittest for RepeatedXorMasker class.""" |
| |
| def test_mask(self): |
| # Sample input e6,97,a5 is U+65e5 in UTF-8 |
| masker = util.RepeatedXorMasker('\xff\xff\xff\xff') |
| result = masker.mask('\xe6\x97\xa5') |
| self.assertEqual('\x19\x68\x5a', result) |
| |
| masker = util.RepeatedXorMasker('\x00\x00\x00\x00') |
| result = masker.mask('\xe6\x97\xa5') |
| self.assertEqual('\xe6\x97\xa5', result) |
| |
| masker = util.RepeatedXorMasker('\xe6\x97\xa5\x20') |
| result = masker.mask('\xe6\x97\xa5') |
| self.assertEqual('\x00\x00\x00', result) |
| |
| def test_mask_twice(self): |
| masker = util.RepeatedXorMasker('\x00\x7f\xff\x20') |
| # mask[0], mask[1], ... will be used. |
| result = masker.mask('\x00\x00\x00\x00\x00') |
| self.assertEqual('\x00\x7f\xff\x20\x00', result) |
| # mask[2], mask[0], ... will be used for the next call. |
| result = masker.mask('\x00\x00\x00\x00\x00') |
| self.assertEqual('\x7f\xff\x20\x00\x7f', result) |
| |
| def test_mask_large_data(self): |
| masker = util.RepeatedXorMasker('mASk') |
| original = ''.join([chr(i % 256) for i in xrange(1000)]) |
| result = masker.mask(original) |
| expected = ''.join( |
| [chr((i % 256) ^ ord('mASk'[i % 4])) for i in xrange(1000)]) |
| self.assertEqual(expected, result) |
| |
| masker = util.RepeatedXorMasker('MaSk') |
| first_part = 'The WebSocket Protocol enables two-way communication.' |
| result = masker.mask(first_part) |
| self.assertEqual( |
| '\x19\t6K\x1a\x0418"\x028\x0e9A\x03\x19"\x15<\x08"\rs\x0e#' |
| '\x001\x07(\x12s\x1f:\x0e~\x1c,\x18s\x08"\x0c>\x1e#\x080\n9' |
| '\x08<\x05c', |
| result) |
| second_part = 'It has two parts: a handshake and the data transfer.' |
| result = masker.mask(second_part) |
| self.assertEqual( |
| "('K%\x00 K9\x16<K=\x00!\x1f>[s\nm\t2\x05)\x12;\n&\x04s\n#" |
| "\x05s\x1f%\x04s\x0f,\x152K9\x132\x05>\x076\x19c", |
| result) |
| |
| |
| def get_random_section(source, min_num_chunks): |
| chunks = [] |
| bytes_chunked = 0 |
| |
| while bytes_chunked < len(source): |
| chunk_size = random.randint( |
| 1, |
| min(len(source) / min_num_chunks, len(source) - bytes_chunked)) |
| chunk = source[bytes_chunked:bytes_chunked + chunk_size] |
| chunks.append(chunk) |
| bytes_chunked += chunk_size |
| |
| return chunks |
| |
| |
| class InflaterDeflaterTest(unittest.TestCase): |
| """A unittest for _Inflater and _Deflater class.""" |
| |
| def test_inflate_deflate_default(self): |
| input = b'hello' + '-' * 30000 + b'hello' |
| inflater15 = util._Inflater(15) |
| deflater15 = util._Deflater(15) |
| inflater8 = util._Inflater(8) |
| deflater8 = util._Deflater(8) |
| |
| compressed15 = deflater15.compress_and_finish(input) |
| compressed8 = deflater8.compress_and_finish(input) |
| |
| inflater15.append(compressed15) |
| inflater8.append(compressed8) |
| |
| self.assertNotEqual(compressed15, compressed8) |
| self.assertEqual(input, inflater15.decompress(-1)) |
| self.assertEqual(input, inflater8.decompress(-1)) |
| |
| def test_random_section(self): |
| random.seed(a=0) |
| source = ''.join( |
| [chr(random.randint(0, 255)) for i in xrange(100 * 1024)]) |
| |
| chunked_input = get_random_section(source, 10) |
| print "Input chunk sizes: %r" % [len(c) for c in chunked_input] |
| |
| deflater = util._Deflater(15) |
| compressed = [] |
| for chunk in chunked_input: |
| compressed.append(deflater.compress(chunk)) |
| compressed.append(deflater.compress_and_finish('')) |
| |
| chunked_expectation = get_random_section(source, 10) |
| print ("Expectation chunk sizes: %r" % |
| [len(c) for c in chunked_expectation]) |
| |
| inflater = util._Inflater(15) |
| inflater.append(''.join(compressed)) |
| for chunk in chunked_expectation: |
| decompressed = inflater.decompress(len(chunk)) |
| self.assertEqual(chunk, decompressed) |
| |
| self.assertEqual('', inflater.decompress(-1)) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |
| |
| |
| # vi:sts=4 sw=4 et |
