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import os
import sys
import time
import unittest
from django.core.files.base import ContentFile
from django.core.files.storage import InMemoryStorage
from django.core.files.uploadedfile import TemporaryUploadedFile
from django.test import SimpleTestCase, override_settings
class MemoryStorageIOTests(unittest.TestCase):
def setUp(self):
self.storage = InMemoryStorage()
def test_write_string(self):
with self.storage.open("file.txt", "w") as fd:
fd.write("hello")
with self.storage.open("file.txt", "r") as fd:
self.assertEqual(fd.read(), "hello")
with self.storage.open("file.dat", "wb") as fd:
fd.write(b"hello")
with self.storage.open("file.dat", "rb") as fd:
self.assertEqual(fd.read(), b"hello")
def test_convert_str_to_bytes_and_back(self):
"""InMemoryStorage handles conversion from str to bytes and back."""
with self.storage.open("file.txt", "w") as fd:
fd.write("hello")
with self.storage.open("file.txt", "rb") as fd:
self.assertEqual(fd.read(), b"hello")
with self.storage.open("file.dat", "wb") as fd:
fd.write(b"hello")
with self.storage.open("file.dat", "r") as fd:
self.assertEqual(fd.read(), "hello")
def test_open_missing_file(self):
self.assertRaises(FileNotFoundError, self.storage.open, "missing.txt")
def test_open_dir_as_file(self):
with self.storage.open("a/b/file.txt", "w") as fd:
fd.write("hello")
self.assertRaises(IsADirectoryError, self.storage.open, "a/b")
def test_file_saving(self):
self.storage.save("file.txt", ContentFile("test"))
self.assertEqual(self.storage.open("file.txt", "r").read(), "test")
self.storage.save("file.dat", ContentFile(b"test"))
self.assertEqual(self.storage.open("file.dat", "rb").read(), b"test")
@unittest.skipIf(
sys.platform == "win32", "Windows doesn't support moving open files."
)
def test_removing_temporary_file_after_save(self):
"""A temporary file is removed when saved into storage."""
with TemporaryUploadedFile("test", "text/plain", 1, "utf8") as file:
self.storage.save("test.txt", file)
self.assertFalse(os.path.exists(file.temporary_file_path()))
def test_large_file_saving(self):
large_file = ContentFile("A" * ContentFile.DEFAULT_CHUNK_SIZE * 3)
self.storage.save("file.txt", large_file)
def test_file_size(self):
"""
File size is equal to the size of bytes-encoded version of the saved
data.
"""
self.storage.save("file.txt", ContentFile("test"))
self.assertEqual(self.storage.size("file.txt"), 4)
# A unicode char encoded to UTF-8 takes 2 bytes.
self.storage.save("unicode_file.txt", ContentFile("รจ"))
self.assertEqual(self.storage.size("unicode_file.txt"), 2)
self.storage.save("file.dat", ContentFile(b"\xf1\xf1"))
self.assertEqual(self.storage.size("file.dat"), 2)
def test_listdir(self):
self.assertEqual(self.storage.listdir(""), ([], []))
self.storage.save("file_a.txt", ContentFile("test"))
self.storage.save("file_b.txt", ContentFile("test"))
self.storage.save("dir/file_c.txt", ContentFile("test"))
dirs, files = self.storage.listdir("")
self.assertEqual(sorted(files), ["file_a.txt", "file_b.txt"])
self.assertEqual(dirs, ["dir"])
def test_list_relative_path(self):
self.storage.save("a/file.txt", ContentFile("test"))
_dirs, files = self.storage.listdir("./a/./.")
self.assertEqual(files, ["file.txt"])
def test_exists(self):
self.storage.save("dir/subdir/file.txt", ContentFile("test"))
self.assertTrue(self.storage.exists("dir"))
self.assertTrue(self.storage.exists("dir/subdir"))
self.assertTrue(self.storage.exists("dir/subdir/file.txt"))
def test_delete(self):
"""Deletion handles both files and directory trees."""
self.storage.save("dir/subdir/file.txt", ContentFile("test"))
self.storage.save("dir/subdir/other_file.txt", ContentFile("test"))
self.assertTrue(self.storage.exists("dir/subdir/file.txt"))
self.assertTrue(self.storage.exists("dir/subdir/other_file.txt"))
self.storage.delete("dir/subdir/other_file.txt")
self.assertFalse(self.storage.exists("dir/subdir/other_file.txt"))
self.storage.delete("dir/subdir")
self.assertFalse(self.storage.exists("dir/subdir/file.txt"))
self.assertFalse(self.storage.exists("dir/subdir"))
def test_delete_missing_file(self):
self.storage.delete("missing_file.txt")
self.storage.delete("missing_dir/missing_file.txt")
def test_file_node_cannot_have_children(self):
"""Navigate to children of a file node raises FileExistsError."""
self.storage.save("file.txt", ContentFile("test"))
self.assertRaises(FileExistsError, self.storage.listdir, "file.txt/child_dir")
self.assertRaises(
FileExistsError,
self.storage.save,
"file.txt/child_file.txt",
ContentFile("test"),
)
@override_settings(MEDIA_URL=None)
def test_url(self):
self.assertRaises(ValueError, self.storage.url, ("file.txt",))
storage = InMemoryStorage(base_url="http://www.example.com")
self.assertEqual(storage.url("file.txt"), "http://www.example.com/file.txt")
def test_url_with_none_filename(self):
storage = InMemoryStorage(base_url="/test_media_url/")
self.assertEqual(storage.url(None), "/test_media_url/")
class MemoryStorageTimesTests(unittest.TestCase):
def setUp(self):
self.storage = InMemoryStorage()
def test_file_modified_time(self):
"""
File modified time should change after file changing
"""
self.storage.save("file.txt", ContentFile("test"))
modified_time = self.storage.get_modified_time("file.txt")
time.sleep(0.1)
with self.storage.open("file.txt", "w") as fd:
fd.write("new content")
new_modified_time = self.storage.get_modified_time("file.txt")
self.assertTrue(new_modified_time > modified_time)
def test_file_accessed_time(self):
"""File accessed time should change after consecutive opening."""
self.storage.save("file.txt", ContentFile("test"))
accessed_time = self.storage.get_accessed_time("file.txt")
time.sleep(0.1)
self.storage.open("file.txt", "r")
new_accessed_time = self.storage.get_accessed_time("file.txt")
self.assertGreater(new_accessed_time, accessed_time)
def test_file_created_time(self):
"""File creation time should not change after I/O operations."""
self.storage.save("file.txt", ContentFile("test"))
created_time = self.storage.get_created_time("file.txt")
time.sleep(0.1)
# File opening doesn't change creation time.
file = self.storage.open("file.txt", "r")
after_open_created_time = self.storage.get_created_time("file.txt")
self.assertEqual(after_open_created_time, created_time)
# Writing to a file doesn't change its creation time.
file.write("New test")
self.storage.save("file.txt", file)
after_write_created_time = self.storage.get_created_time("file.txt")
self.assertEqual(after_write_created_time, created_time)
def test_directory_times_changing_after_file_creation(self):
"""
Directory modified and accessed time should change when a new file is
created inside.
"""
self.storage.save("dir/file1.txt", ContentFile("test"))
created_time = self.storage.get_created_time("dir")
modified_time = self.storage.get_modified_time("dir")
accessed_time = self.storage.get_accessed_time("dir")
time.sleep(0.1)
self.storage.save("dir/file2.txt", ContentFile("test"))
new_modified_time = self.storage.get_modified_time("dir")
new_accessed_time = self.storage.get_accessed_time("dir")
after_file_creation_created_time = self.storage.get_created_time("dir")
self.assertGreater(new_modified_time, modified_time)
self.assertGreater(new_accessed_time, accessed_time)
self.assertEqual(created_time, after_file_creation_created_time)
def test_directory_times_changing_after_file_deletion(self):
"""
Directory modified and accessed time should change when a new file is
deleted inside.
"""
self.storage.save("dir/file.txt", ContentFile("test"))
created_time = self.storage.get_created_time("dir")
modified_time = self.storage.get_modified_time("dir")
accessed_time = self.storage.get_accessed_time("dir")
time.sleep(0.1)
self.storage.delete("dir/file.txt")
new_modified_time = self.storage.get_modified_time("dir")
new_accessed_time = self.storage.get_accessed_time("dir")
after_file_deletion_created_time = self.storage.get_created_time("dir")
self.assertGreater(new_modified_time, modified_time)
self.assertGreater(new_accessed_time, accessed_time)
self.assertEqual(created_time, after_file_deletion_created_time)
class InMemoryStorageTests(SimpleTestCase):
def test_deconstruction(self):
storage = InMemoryStorage()
path, args, kwargs = storage.deconstruct()
self.assertEqual(path, "django.core.files.storage.InMemoryStorage")
self.assertEqual(args, ())
self.assertEqual(kwargs, {})
kwargs_orig = {
"location": "/custom_path",
"base_url": "http://myfiles.example.com/",
"file_permissions_mode": "0o755",
"directory_permissions_mode": "0o600",
}
storage = InMemoryStorage(**kwargs_orig)
path, args, kwargs = storage.deconstruct()
self.assertEqual(kwargs, kwargs_orig)
@override_settings(
MEDIA_ROOT="media_root",
MEDIA_URL="media_url/",
FILE_UPLOAD_PERMISSIONS=0o777,
FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o777,
)
def test_setting_changed(self):
"""
Properties using settings values as defaults should be updated on
referenced settings change while specified values should be unchanged.
"""
storage = InMemoryStorage(
location="explicit_location",
base_url="explicit_base_url/",
file_permissions_mode=0o666,
directory_permissions_mode=0o666,
)
defaults_storage = InMemoryStorage()
settings = {
"MEDIA_ROOT": "overridden_media_root",
"MEDIA_URL": "/overridden_media_url/",
"FILE_UPLOAD_PERMISSIONS": 0o333,
"FILE_UPLOAD_DIRECTORY_PERMISSIONS": 0o333,
}
with self.settings(**settings):
self.assertEqual(storage.base_location, "explicit_location")
self.assertIn("explicit_location", storage.location)
self.assertEqual(storage.base_url, "explicit_base_url/")
self.assertEqual(storage.file_permissions_mode, 0o666)
self.assertEqual(storage.directory_permissions_mode, 0o666)
self.assertEqual(defaults_storage.base_location, settings["MEDIA_ROOT"])
self.assertIn(settings["MEDIA_ROOT"], defaults_storage.location)
self.assertEqual(defaults_storage.base_url, settings["MEDIA_URL"])
self.assertEqual(
defaults_storage.file_permissions_mode,
settings["FILE_UPLOAD_PERMISSIONS"],
)
self.assertEqual(
defaults_storage.directory_permissions_mode,
settings["FILE_UPLOAD_DIRECTORY_PERMISSIONS"],
)
|
