inmemorystorage handles conversion from str to bytes and back with self storage openfile txt w as fd fd writehello with self storage openfile txt rb as fd self assertequalfd read bhello with self storage openfile dat wb as fd fd writebhello with self storage openfile dat r as fd self assertequalfd read hello def testopenmissingfileself self assertraisesfilenotfounderror self storage open missing txt def testopendirasfileself with self storage openabfile txt w as fd fd writehello self assertraisesisadirectoryerror self storage open ab def testfilesavingself self storage savefile txt contentfiletest self assertequalself storage openfile txt r read test self storage savefile dat contentfilebtest self assertequalself storage openfile dat rb read btest unittest skipif sys platform win32 windows doesn t support moving open files def testremovingtemporaryfileaftersaveself file size is equal to the size of bytesencoded version of the saved data a unicode char encoded to utf8 takes 2 bytes deletion handles both files and directory trees self storage savedirsubdirfile txt contentfiletest self storage savedirsubdirotherfile txt contentfiletest self asserttrueself storage existsdirsubdirfile txt self asserttrueself storage existsdirsubdirotherfile txt self storage deletedirsubdirotherfile txt self assertfalseself storage existsdirsubdirotherfile txt self storage deletedirsubdir self assertfalseself storage existsdirsubdirfile txt self assertfalseself storage existsdirsubdir def testdeletemissingfileself self storage deletemissingfile txt self storage deletemissingdirmissingfile txt def testfilenodecannothavechildrenself file modified time should change after file changing file accessed time should change after consecutive opening self storage savefile txt contentfiletest accessedtime self storage getaccessedtimefile txt time sleep0 1 self storage openfile txt r newaccessedtime self storage getaccessedtimefile txt self assertgreaternewaccessedtime accessedtime def testfilecreatedtimeself file opening doesn t change creation time writing to a file doesn t change its creation time directory modified and accessed time should change when a new file is created inside directory modified and accessed time should change when a new file is deleted inside properties using settings values as defaults should be updated on referenced settings change while specified values should be unchanged inmemorystorage handles conversion from str to bytes and back a temporary file is removed when saved into storage file size is equal to the size of bytes encoded version of the saved data a unicode char encoded to utf 8 takes 2 bytes deletion handles both files and directory trees navigate to children of a file node raises fileexistserror file modified time should change after file changing file accessed time should change after consecutive opening file creation time should not change after i o operations file opening doesn t change creation time writing to a file doesn t change its creation time directory modified and accessed time should change when a new file is created inside directory modified and accessed time should change when a new file is deleted inside properties using settings values as defaults should be updated on referenced settings change while specified values should be unchanged
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):
        
        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):
        
        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):
        
        self.storage.save("file.txt", ContentFile("test"))
        self.assertEqual(self.storage.size("file.txt"), 4)

        
        self.storage.save("unicode_file.txt", ContentFile("è"))
        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):
        
        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):
        
        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):
        
        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):
        
        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):
        
        self.storage.save("file.txt", ContentFile("test"))
        created_time = self.storage.get_created_time("file.txt")

        time.sleep(0.1)

        
        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)
        
        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):
        
        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):
        
        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):
        
        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"],
            )