# -*- coding: utf-8 -*- import os import shutil import sys import tempfile import time import unittest from cStringIO import StringIO from django.conf import settings from django.core.exceptions import SuspiciousOperation from django.core.files.base import ContentFile, File from django.core.files.images import get_image_dimensions from django.core.files.storage import FileSystemStorage, get_storage_class from django.core.files.uploadedfile import UploadedFile from django.core.exceptions import ImproperlyConfigured from unittest import TestCase try: import threading except ImportError: import dummy_threading as threading # Try to import PIL in either of the two ways it can end up installed. # Checking for the existence of Image is enough for CPython, but # for PyPy, you need to check for the underlying modules try: from PIL import Image, _imaging except ImportError: try: import Image, _imaging except ImportError: Image = None class GetStorageClassTests(unittest.TestCase): def assertRaisesErrorWithMessage(self, error, message, callable, *args, **kwargs): self.assertRaises(error, callable, *args, **kwargs) try: callable(*args, **kwargs) except error, e: self.assertEqual(message, str(e)) def test_get_filesystem_storage(self): """ get_storage_class returns the class for a storage backend name/path. """ self.assertEqual( get_storage_class('django.core.files.storage.FileSystemStorage'), FileSystemStorage) def test_get_invalid_storage_module(self): """ get_storage_class raises an error if the requested import don't exist. """ self.assertRaisesErrorWithMessage( ImproperlyConfigured, "NonExistingStorage isn't a storage module.", get_storage_class, 'NonExistingStorage') def test_get_nonexisting_storage_class(self): """ get_storage_class raises an error if the requested class don't exist. """ self.assertRaisesErrorWithMessage( ImproperlyConfigured, 'Storage module "django.core.files.storage" does not define a '\ '"NonExistingStorage" class.', get_storage_class, 'django.core.files.storage.NonExistingStorage') def test_get_nonexisting_storage_module(self): """ get_storage_class raises an error if the requested module don't exist. """ self.assertRaisesErrorWithMessage( ImproperlyConfigured, 'Error importing storage module django.core.files.non_existing_'\ 'storage: "No module named non_existing_storage"', get_storage_class, 'django.core.files.non_existing_storage.NonExistingStorage') class FileStorageTests(unittest.TestCase): storage_class = FileSystemStorage def setUp(self): self.temp_dir = tempfile.mktemp() os.makedirs(self.temp_dir) self.storage = self.storage_class(location=self.temp_dir, base_url='/test_media_url/') def tearDown(self): shutil.rmtree(self.temp_dir) def test_file_access_options(self): """ Standard file access options are available, and work as expected. """ self.failIf(self.storage.exists('storage_test')) f = self.storage.open('storage_test', 'w') f.write('storage contents') f.close() self.assert_(self.storage.exists('storage_test')) f = self.storage.open('storage_test', 'r') self.assertEqual(f.read(), 'storage contents') f.close() self.storage.delete('storage_test') self.failIf(self.storage.exists('storage_test')) def test_file_save_without_name(self): """ File storage extracts the filename from the content object if no name is given explicitly. """ self.failIf(self.storage.exists('test.file')) f = ContentFile('custom contents') f.name = 'test.file' storage_f_name = self.storage.save(None, f) self.assertEqual(storage_f_name, f.name) self.assert_(os.path.exists(os.path.join(self.temp_dir, f.name))) self.storage.delete(storage_f_name) def test_file_path(self): """ File storage returns the full path of a file """ self.failIf(self.storage.exists('test.file')) f = ContentFile('custom contents') f_name = self.storage.save('test.file', f) self.assertEqual(self.storage.path(f_name), os.path.join(self.temp_dir, f_name)) self.storage.delete(f_name) def test_file_url(self): """ File storage returns a url to access a given file from the web. """ self.assertEqual(self.storage.url('test.file'), '%s%s' % (self.storage.base_url, 'test.file')) self.storage.base_url = None self.assertRaises(ValueError, self.storage.url, 'test.file') def test_file_with_mixin(self): """ File storage can get a mixin to extend the functionality of the returned file. """ self.failIf(self.storage.exists('test.file')) class TestFileMixin(object): mixed_in = True f = ContentFile('custom contents') f_name = self.storage.save('test.file', f) self.assert_(isinstance( self.storage.open('test.file', mixin=TestFileMixin), TestFileMixin )) self.storage.delete('test.file') def test_listdir(self): """ File storage returns a tuple containing directories and files. """ self.failIf(self.storage.exists('storage_test_1')) self.failIf(self.storage.exists('storage_test_2')) self.failIf(self.storage.exists('storage_dir_1')) f = self.storage.save('storage_test_1', ContentFile('custom content')) f = self.storage.save('storage_test_2', ContentFile('custom content')) os.mkdir(os.path.join(self.temp_dir, 'storage_dir_1')) dirs, files = self.storage.listdir('') self.assertEqual(set(dirs), set([u'storage_dir_1'])) self.assertEqual(set(files), set([u'storage_test_1', u'storage_test_2'])) self.storage.delete('storage_test_1') self.storage.delete('storage_test_2') os.rmdir(os.path.join(self.temp_dir, 'storage_dir_1')) def test_file_storage_prevents_directory_traversal(self): """ File storage prevents directory traversal (files can only be accessed if they're below the storage location). """ self.assertRaises(SuspiciousOperation, self.storage.exists, '..') self.assertRaises(SuspiciousOperation, self.storage.exists, '/etc/passwd') class CustomStorage(FileSystemStorage): def get_available_name(self, name): """ Append numbers to duplicate files rather than underscores, like Trac. """ parts = name.split('.') basename, ext = parts[0], parts[1:] number = 2 while self.exists(name): name = '.'.join([basename, str(number)] + ext) number += 1 return name class CustomStorageTests(FileStorageTests): storage_class = CustomStorage def test_custom_get_available_name(self): first = self.storage.save('custom_storage', ContentFile('custom contents')) self.assertEqual(first, 'custom_storage') second = self.storage.save('custom_storage', ContentFile('more contents')) self.assertEqual(second, 'custom_storage.2') self.storage.delete(first) self.storage.delete(second) class UnicodeFileNameTests(unittest.TestCase): def test_unicode_file_names(self): """ Regression test for #8156: files with unicode names I can't quite figure out the encoding situation between doctest and this file, but the actual repr doesn't matter; it just shouldn't return a unicode object. """ uf = UploadedFile(name=u'¿Cómo?',content_type='text') self.assertEqual(type(uf.__repr__()), str) # Tests for a race condition on file saving (#4948). # This is written in such a way that it'll always pass on platforms # without threading. class SlowFile(ContentFile): def chunks(self): time.sleep(1) return super(ContentFile, self).chunks() class FileSaveRaceConditionTest(TestCase): def setUp(self): self.storage_dir = tempfile.mkdtemp() self.storage = FileSystemStorage(self.storage_dir) self.thread = threading.Thread(target=self.save_file, args=['conflict']) def tearDown(self): shutil.rmtree(self.storage_dir) def save_file(self, name): name = self.storage.save(name, SlowFile("Data")) def test_race_condition(self): self.thread.start() name = self.save_file('conflict') self.thread.join() self.assert_(self.storage.exists('conflict')) self.assert_(self.storage.exists('conflict_1')) self.storage.delete('conflict') self.storage.delete('conflict_1') class FileStoragePermissions(TestCase): def setUp(self): self.old_perms = settings.FILE_UPLOAD_PERMISSIONS settings.FILE_UPLOAD_PERMISSIONS = 0666 self.storage_dir = tempfile.mkdtemp() self.storage = FileSystemStorage(self.storage_dir) def tearDown(self): settings.FILE_UPLOAD_PERMISSIONS = self.old_perms shutil.rmtree(self.storage_dir) def test_file_upload_permissions(self): name = self.storage.save("the_file", ContentFile("data")) actual_mode = os.stat(self.storage.path(name))[0] & 0777 self.assertEqual(actual_mode, 0666) class FileStoragePathParsing(TestCase): def setUp(self): self.storage_dir = tempfile.mkdtemp() self.storage = FileSystemStorage(self.storage_dir) def tearDown(self): shutil.rmtree(self.storage_dir) def test_directory_with_dot(self): """Regression test for #9610. If the directory name contains a dot and the file name doesn't, make sure we still mangle the file name instead of the directory name. """ self.storage.save('dotted.path/test', ContentFile("1")) self.storage.save('dotted.path/test', ContentFile("2")) self.failIf(os.path.exists(os.path.join(self.storage_dir, 'dotted_.path'))) self.assert_(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/test'))) self.assert_(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/test_1'))) def test_first_character_dot(self): """ File names with a dot as their first character don't have an extension, and the underscore should get added to the end. """ self.storage.save('dotted.path/.test', ContentFile("1")) self.storage.save('dotted.path/.test', ContentFile("2")) self.assert_(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/.test'))) # Before 2.6, a leading dot was treated as an extension, and so # underscore gets added to beginning instead of end. if sys.version_info < (2, 6): self.assert_(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/_1.test'))) else: self.assert_(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/.test_1'))) if Image is not None: class DimensionClosingBug(TestCase): """ Test that get_image_dimensions() properly closes files (#8817) """ def test_not_closing_of_files(self): """ Open files passed into get_image_dimensions() should stay opened. """ empty_io = StringIO() try: get_image_dimensions(empty_io) finally: self.assert_(not empty_io.closed) def test_closing_of_filenames(self): """ get_image_dimensions() called with a filename should closed the file. """ # We need to inject a modified open() builtin into the images module # that checks if the file was closed properly if the function is # called with a filename instead of an file object. # get_image_dimensions will call our catching_open instead of the # regular builtin one. class FileWrapper(object): _closed = [] def __init__(self, f): self.f = f def __getattr__(self, name): return getattr(self.f, name) def close(self): self._closed.append(True) self.f.close() def catching_open(*args): return FileWrapper(open(*args)) from django.core.files import images images.open = catching_open try: get_image_dimensions(os.path.join(os.path.dirname(__file__), "test1.png")) finally: del images.open self.assert_(FileWrapper._closed) class InconsistentGetImageDimensionsBug(TestCase): """ Test that get_image_dimensions() works properly after various calls using a file handler (#11158) """ def test_multiple_calls(self): """ Multiple calls of get_image_dimensions() should return the same size. """ from django.core.files.images import ImageFile img_path = os.path.join(os.path.dirname(__file__), "test.png") image = ImageFile(open(img_path)) image_pil = Image.open(img_path) size_1, size_2 = get_image_dimensions(image), get_image_dimensions(image) self.assertEqual(image_pil.size, size_1) self.assertEqual(size_1, size_2)