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#!/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 memorizingfile module."""
import StringIO
import unittest
import set_sys_path # Update sys.path to locate mod_pywebsocket module.
from mod_pywebsocket import memorizingfile
class UtilTest(unittest.TestCase):
"""A unittest for memorizingfile module."""
def check(self, memorizing_file, num_read, expected_list):
for unused in range(num_read):
memorizing_file.readline()
actual_list = memorizing_file.get_memorized_lines()
self.assertEqual(len(expected_list), len(actual_list))
for expected, actual in zip(expected_list, actual_list):
self.assertEqual(expected, actual)
def check_with_size(self, memorizing_file, read_size, expected_list):
read_list = []
read_line = ''
while True:
line = memorizing_file.readline(read_size)
line_length = len(line)
self.assertTrue(line_length <= read_size)
if line_length == 0:
if read_line != '':
read_list.append(read_line)
break
read_line += line
if line[line_length - 1] == '\n':
read_list.append(read_line)
read_line = ''
actual_list = memorizing_file.get_memorized_lines()
self.assertEqual(len(expected_list), len(actual_list))
self.assertEqual(len(expected_list), len(read_list))
for expected, actual, read in zip(expected_list, actual_list,
read_list):
self.assertEqual(expected, actual)
self.assertEqual(expected, read)
def test_get_memorized_lines(self):
memorizing_file = memorizingfile.MemorizingFile(StringIO.StringIO(
'Hello\nWorld\nWelcome'))
self.check(memorizing_file, 3, ['Hello\n', 'World\n', 'Welcome'])
def test_get_memorized_lines_limit_memorized_lines(self):
memorizing_file = memorizingfile.MemorizingFile(StringIO.StringIO(
'Hello\nWorld\nWelcome'), 2)
self.check(memorizing_file, 3, ['Hello\n', 'World\n'])
def test_get_memorized_lines_empty_file(self):
memorizing_file = memorizingfile.MemorizingFile(StringIO.StringIO(
''))
self.check(memorizing_file, 10, [])
def test_get_memorized_lines_with_size(self):
for size in range(1, 10):
memorizing_file = memorizingfile.MemorizingFile(StringIO.StringIO(
'Hello\nWorld\nWelcome'))
self.check_with_size(memorizing_file, size,
['Hello\n', 'World\n', 'Welcome'])
if __name__ == '__main__':
unittest.main()
# vi:sts=4 sw=4 et
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