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