Fixed #35384 -- Raised FieldError when saving a file without a name to FileField.

tests/model_fields/test_filefield.py

@@ -5,13 +5,14 @@ import tempfile
 import unittest
 from pathlib import Path
 
-from django.core.exceptions import SuspiciousFileOperation
+from django.core.exceptions import FieldError, SuspiciousFileOperation
 from django.core.files import File, temp
 from django.core.files.base import ContentFile
 from django.core.files.uploadedfile import TemporaryUploadedFile
 from django.db import IntegrityError, models
 from django.test import TestCase, override_settings
 from django.test.utils import isolate_apps
+from django.utils.version import PY311
 
 from .models import Document
 
@@ -72,6 +73,27 @@ class FileFieldTests(TestCase):
             with self.assertRaisesMessage(SuspiciousFileOperation, msg):
                 document.save()
 
+    def test_save_content_file_without_name(self):
+        d = Document()
+        d.myfile = ContentFile(b"")
+        msg = "File for myfile must have the name attribute specified to be saved."
+        with self.assertRaisesMessage(FieldError, msg) as cm:
+            d.save()
+
+        if PY311:
+            self.assertEqual(
+                cm.exception.__notes__, ["Pass a 'name' argument to ContentFile."]
+            )
+
+    def test_delete_content_file(self):
+        file = ContentFile(b"", name="foo")
+        d = Document.objects.create(myfile=file)
+        d.myfile.delete()
+        self.assertIsNone(d.myfile.name)
+        msg = "The 'myfile' attribute has no file associated with it."
+        with self.assertRaisesMessage(ValueError, msg):
+            getattr(d.myfile, "file")
+
     def test_defer(self):
         Document.objects.create(myfile="something.txt")
         self.assertEqual(Document.objects.defer("myfile")[0].myfile, "something.txt")