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tc_directory.py

# Copyright (C) 2009, 2010  Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os.path
import sys
rangerpath = os.path.join(os.path.dirname(__file__), '..')
if sys.path[1] != rangerpath:
      sys.path[1:1] = [rangerpath]

from os.path import realpath, join, dirname

from ranger import fsobject
from ranger.fsobject.file import File
from ranger.fsobject.directory import Directory
from ranger.core.shared import SettingsAware

SettingsAware._setup()

TESTDIR = realpath(join(dirname(__file__), 'testdir'))
TESTFILE = join(TESTDIR, 'testfile5234148')
NONEXISTANT_DIR = join(TESTDIR, 'nonexistant')

import unittest
00036 class Test1(unittest.TestCase):
      def test_initial_condition(self):
            # Check for the expected initial condition
            dir = Directory(TESTDIR)

            self.assertEqual(dir.path, TESTDIR)
            self.assertFalse(dir.content_loaded)
            self.assertEqual(dir.filenames, None)
            self.assertEqual(dir.files, None)
            if not sys.flags.optimize:  # asserts are ignored with python -O
                  self.assertRaises(AssertionError, len, dir)

      def test_after_content_loaded(self):
            import os
            # Check whether the directory has the correct list of filenames.
            dir = Directory(TESTDIR)
            dir.load_content(schedule=False)

            self.assertTrue(dir.exists)
            self.assertEqual(type(dir.filenames), list)

            # Get the filenames you expect it to have and sort both before
            # comparing. I don't expect any order after only loading the filenames.
            assumed_filenames = os.listdir(TESTDIR)
            assumed_filenames = list(map(lambda str: os.path.join(TESTDIR, str),
                  assumed_filenames))
            assumed_filenames.sort()
            dir.filenames.sort()

            self.assertTrue(len(dir) > 0)
            self.assertEqual(dir.filenames, assumed_filenames)

            # build a file object for each file in the list assumed_filenames
            # and find exactly one equivalent in dir.files
            for name in assumed_filenames:
                  f = File(name)
                  f.load()
                  for dirfile in dir.files:
                        if (f.path == dirfile.path and f.stat == dirfile.stat):
                              break
                  else:
                        self.fail("couldn't find file {0}".format(name))

      def test_nonexistant_dir(self):
            dir = Directory(NONEXISTANT_DIR)
            dir.load_content(schedule=False)

            self.assertTrue(dir.content_loaded)
            self.assertFalse(dir.exists)
            self.assertFalse(dir.accessible)
            self.assertEqual(dir.filenames, None)
            if not sys.flags.optimize:  # asserts are ignored with python -O
                  self.assertRaises(AssertionError, len, dir)

      def test_load_if_outdated(self):
            import os
            import time
            # modify the directory. If the time between the last modification
            # was within the filesystems resolution of mtime, we should have a reload

            def modify_dir():
                  open(TESTFILE, 'w').close()
                  os.unlink(TESTFILE)

            def mtime():
                  return os.stat(TESTDIR).st_mtime

            dir = Directory(TESTDIR)
            dir.load()

            # If the modification happens to be in the same second as the
            # last modification, it will result in mtime having the same
            # integer value. So we wait until the resolution is exceeded
            # and mtime differs.
            old_mtime = mtime()
            for i in range(50):
                  modify_dir()
                  if old_mtime != mtime(): break
                  time.sleep(0.1)
            else:
                  # fail after 5 seconds of trying
                  self.fail(
                              "Cannot perform test: mtime of TESTDIR is not being updated.")

            self.assertTrue(dir.load_if_outdated())

if __name__ == '__main__':
      unittest.main()


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