+ source /opt/miniconda3/bin/activate
++ _CONDA_ROOT=/opt/miniconda3
++ . /opt/miniconda3/etc/profile.d/conda.sh
+++ export CONDA_EXE=/opt/miniconda3/bin/conda
+++ CONDA_EXE=/opt/miniconda3/bin/conda
+++ export _CE_M=
+++ _CE_M=
+++ export _CE_CONDA=
+++ _CE_CONDA=
+++ export CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+++ CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+++ '[' -z '' ']'
+++ export CONDA_SHLVL=0
+++ CONDA_SHLVL=0
+++ '[' -n '' ']'
+++++ dirname /opt/miniconda3/bin/conda
++++ dirname /opt/miniconda3/bin
+++ PATH=/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+++ export PATH
+++ '[' -z '' ']'
+++ PS1=
++ conda activate
++ local cmd=activate
++ case "$cmd" in
++ __conda_activate activate
++ '[' -n '' ']'
++ local ask_conda
+++ PS1=
+++ __conda_exe shell.posix activate
+++ /opt/miniconda3/bin/conda shell.posix activate
++ ask_conda='PS1='\''(base) '\''
export PATH='\''/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3'\''
export CONDA_SHLVL='\''1'\''
export CONDA_DEFAULT_ENV='\''base'\''
export CONDA_PROMPT_MODIFIER='\''(base) '\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
++ eval 'PS1='\''(base) '\''
export PATH='\''/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3'\''
export CONDA_SHLVL='\''1'\''
export CONDA_DEFAULT_ENV='\''base'\''
export CONDA_PROMPT_MODIFIER='\''(base) '\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
+++ PS1='(base) '
+++ export PATH=/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+++ PATH=/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+++ export CONDA_PREFIX=/opt/miniconda3
+++ CONDA_PREFIX=/opt/miniconda3
+++ export CONDA_SHLVL=1
+++ CONDA_SHLVL=1
+++ export CONDA_DEFAULT_ENV=base
+++ CONDA_DEFAULT_ENV=base
+++ export 'CONDA_PROMPT_MODIFIER=(base) '
+++ CONDA_PROMPT_MODIFIER='(base) '
+++ export CONDA_EXE=/opt/miniconda3/bin/conda
+++ CONDA_EXE=/opt/miniconda3/bin/conda
+++ export _CE_M=
+++ _CE_M=
+++ export _CE_CONDA=
+++ _CE_CONDA=
+++ export CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+++ CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
++ __conda_hashr
++ '[' -n '' ']'
++ '[' -n '' ']'
++ hash -r
+ conda activate testbed
+ local cmd=activate
+ case "$cmd" in
+ __conda_activate activate testbed
+ '[' -n '' ']'
+ local ask_conda
++ PS1='(base) '
++ __conda_exe shell.posix activate testbed
++ /opt/miniconda3/bin/conda shell.posix activate testbed
+ ask_conda='PS1='\''(testbed) '\''
export PATH='\''/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3/envs/testbed'\''
export CONDA_SHLVL='\''2'\''
export CONDA_DEFAULT_ENV='\''testbed'\''
export CONDA_PROMPT_MODIFIER='\''(testbed) '\''
export CONDA_PREFIX_1='\''/opt/miniconda3'\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
+ eval 'PS1='\''(testbed) '\''
export PATH='\''/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3/envs/testbed'\''
export CONDA_SHLVL='\''2'\''
export CONDA_DEFAULT_ENV='\''testbed'\''
export CONDA_PROMPT_MODIFIER='\''(testbed) '\''
export CONDA_PREFIX_1='\''/opt/miniconda3'\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
++ PS1='(testbed) '
++ export PATH=/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
++ PATH=/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
++ export CONDA_PREFIX=/opt/miniconda3/envs/testbed
++ CONDA_PREFIX=/opt/miniconda3/envs/testbed
++ export CONDA_SHLVL=2
++ CONDA_SHLVL=2
++ export CONDA_DEFAULT_ENV=testbed
++ CONDA_DEFAULT_ENV=testbed
++ export 'CONDA_PROMPT_MODIFIER=(testbed) '
++ CONDA_PROMPT_MODIFIER='(testbed) '
++ export CONDA_PREFIX_1=/opt/miniconda3
++ CONDA_PREFIX_1=/opt/miniconda3
++ export CONDA_EXE=/opt/miniconda3/bin/conda
++ CONDA_EXE=/opt/miniconda3/bin/conda
++ export _CE_M=
++ _CE_M=
++ export _CE_CONDA=
++ _CE_CONDA=
++ export CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
++ CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+ __conda_hashr
+ '[' -n '' ']'
+ '[' -n '' ']'
+ hash -r
+ cd /testbed
+ sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen
+ locale-gen
Generating locales (this might take a while)...
  en_US.UTF-8... done
Generation complete.
+ export LANG=en_US.UTF-8
+ LANG=en_US.UTF-8
+ export LANGUAGE=en_US:en
+ LANGUAGE=en_US:en
+ export LC_ALL=en_US.UTF-8
+ LC_ALL=en_US.UTF-8
+ git config --global --add safe.directory /testbed
+ cd /testbed
+ git status
On branch main
Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
	modified:   django/db/migrations/serializer.py

no changes added to commit (use "git add" and/or "git commit -a")
+ git show
commit 915a7406f113d79d266df0e6177e4e95e9373e7a
Author: SWE-bench <setup@swebench.config>
Date:   Wed Sep 10 10:26:50 2025 +0000

    SWE-bench
+ git -c core.fileMode=false diff 89d41cba392b759732ba9f1db4ff29ed47da6a56
diff --git a/django/db/migrations/serializer.py b/django/db/migrations/serializer.py
index 7d226955d5..0610702219 100644
--- a/django/db/migrations/serializer.py
+++ b/django/db/migrations/serializer.py
@@ -196,7 +196,31 @@ class IterableSerializer(BaseSerializer):
 class ModelFieldSerializer(DeconstructableSerializer):
     def serialize(self):
         attr_name, path, args, kwargs = self.value.deconstruct()
-        return self.serialize_deconstructed(path, args, kwargs)
+        # For fields, we have access to the actual class, so we can get the module
+        # This is important for inner classes where path is module.Outer.Inner
+        # but we need to import just 'module', not 'module.Outer'
+        module = self.value.__class__.__module__
+        if module == "django.db.models":
+            imports = {"from django.db import models"}
+            # Handle special case for Model
+            if path == "django.db.models.Model":
+                name = "models.Model"
+            else:
+                name = "models.%s" % path.split(".", 2)[-1]  # Get everything after django.db.models.
+        else:
+            imports = {"import %s" % module}
+            name = path
+        
+        strings = []
+        for arg in args:
+            arg_string, arg_imports = serializer_factory(arg).serialize()
+            strings.append(arg_string)
+            imports.update(arg_imports)
+        for kw, arg in sorted(kwargs.items()):
+            arg_string, arg_imports = serializer_factory(arg).serialize()
+            imports.update(arg_imports)
+            strings.append("%s=%s" % (kw, arg_string))
+        return "%s(%s)" % (name, ", ".join(strings)), imports
 
 
 class ModelManagerSerializer(DeconstructableSerializer):
+ source /opt/miniconda3/bin/activate
++ _CONDA_ROOT=/opt/miniconda3
++ . /opt/miniconda3/etc/profile.d/conda.sh
+++ export CONDA_EXE=/opt/miniconda3/bin/conda
+++ CONDA_EXE=/opt/miniconda3/bin/conda
+++ export _CE_M=
+++ _CE_M=
+++ export _CE_CONDA=
+++ _CE_CONDA=
+++ export CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+++ CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+++ '[' -z x ']'
++ conda activate
++ local cmd=activate
++ case "$cmd" in
++ __conda_activate activate
++ '[' -n '' ']'
++ local ask_conda
+++ PS1='(testbed) '
+++ __conda_exe shell.posix activate
+++ /opt/miniconda3/bin/conda shell.posix activate
++ ask_conda='PS1='\''(base) '\''
export PATH='\''/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3'\''
export CONDA_SHLVL='\''3'\''
export CONDA_DEFAULT_ENV='\''base'\''
export CONDA_PROMPT_MODIFIER='\''(base) '\''
export CONDA_PREFIX_2='\''/opt/miniconda3/envs/testbed'\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
++ eval 'PS1='\''(base) '\''
export PATH='\''/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3'\''
export CONDA_SHLVL='\''3'\''
export CONDA_DEFAULT_ENV='\''base'\''
export CONDA_PROMPT_MODIFIER='\''(base) '\''
export CONDA_PREFIX_2='\''/opt/miniconda3/envs/testbed'\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
+++ PS1='(base) '
+++ export PATH=/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+++ PATH=/opt/miniconda3/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+++ export CONDA_PREFIX=/opt/miniconda3
+++ CONDA_PREFIX=/opt/miniconda3
+++ export CONDA_SHLVL=3
+++ CONDA_SHLVL=3
+++ export CONDA_DEFAULT_ENV=base
+++ CONDA_DEFAULT_ENV=base
+++ export 'CONDA_PROMPT_MODIFIER=(base) '
+++ CONDA_PROMPT_MODIFIER='(base) '
+++ export CONDA_PREFIX_2=/opt/miniconda3/envs/testbed
+++ CONDA_PREFIX_2=/opt/miniconda3/envs/testbed
+++ export CONDA_EXE=/opt/miniconda3/bin/conda
+++ CONDA_EXE=/opt/miniconda3/bin/conda
+++ export _CE_M=
+++ _CE_M=
+++ export _CE_CONDA=
+++ _CE_CONDA=
+++ export CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+++ CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
++ __conda_hashr
++ '[' -n '' ']'
++ '[' -n '' ']'
++ hash -r
+ conda activate testbed
+ local cmd=activate
+ case "$cmd" in
+ __conda_activate activate testbed
+ '[' -n '' ']'
+ local ask_conda
++ PS1='(base) '
++ __conda_exe shell.posix activate testbed
++ /opt/miniconda3/bin/conda shell.posix activate testbed
+ ask_conda='PS1='\''(testbed) '\''
export PATH='\''/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3/envs/testbed'\''
export CONDA_SHLVL='\''4'\''
export CONDA_DEFAULT_ENV='\''testbed'\''
export CONDA_PROMPT_MODIFIER='\''(testbed) '\''
export CONDA_PREFIX_3='\''/opt/miniconda3'\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
+ eval 'PS1='\''(testbed) '\''
export PATH='\''/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'\''
export CONDA_PREFIX='\''/opt/miniconda3/envs/testbed'\''
export CONDA_SHLVL='\''4'\''
export CONDA_DEFAULT_ENV='\''testbed'\''
export CONDA_PROMPT_MODIFIER='\''(testbed) '\''
export CONDA_PREFIX_3='\''/opt/miniconda3'\''
export CONDA_EXE='\''/opt/miniconda3/bin/conda'\''
export _CE_M='\'''\''
export _CE_CONDA='\'''\''
export CONDA_PYTHON_EXE='\''/opt/miniconda3/bin/python'\'''
++ PS1='(testbed) '
++ export PATH=/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
++ PATH=/opt/miniconda3/envs/testbed/bin:/opt/miniconda3/condabin:/opt/miniconda3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
++ export CONDA_PREFIX=/opt/miniconda3/envs/testbed
++ CONDA_PREFIX=/opt/miniconda3/envs/testbed
++ export CONDA_SHLVL=4
++ CONDA_SHLVL=4
++ export CONDA_DEFAULT_ENV=testbed
++ CONDA_DEFAULT_ENV=testbed
++ export 'CONDA_PROMPT_MODIFIER=(testbed) '
++ CONDA_PROMPT_MODIFIER='(testbed) '
++ export CONDA_PREFIX_3=/opt/miniconda3
++ CONDA_PREFIX_3=/opt/miniconda3
++ export CONDA_EXE=/opt/miniconda3/bin/conda
++ CONDA_EXE=/opt/miniconda3/bin/conda
++ export _CE_M=
++ _CE_M=
++ export _CE_CONDA=
++ _CE_CONDA=
++ export CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
++ CONDA_PYTHON_EXE=/opt/miniconda3/bin/python
+ __conda_hashr
+ '[' -n '' ']'
+ '[' -n '' ']'
+ hash -r
+ python -m pip install -e .
Obtaining file:///testbed
Requirement already satisfied: asgiref>=3.2 in /opt/miniconda3/envs/testbed/lib/python3.6/site-packages (from Django==3.1) (3.4.1)
Requirement already satisfied: pytz in /opt/miniconda3/envs/testbed/lib/python3.6/site-packages (from Django==3.1) (2024.2)
Requirement already satisfied: sqlparse>=0.2.2 in /opt/miniconda3/envs/testbed/lib/python3.6/site-packages (from Django==3.1) (0.4.4)
Requirement already satisfied: typing-extensions in /opt/miniconda3/envs/testbed/lib/python3.6/site-packages (from asgiref>=3.2->Django==3.1) (4.1.1)
Installing collected packages: Django
  Attempting uninstall: Django
    Found existing installation: Django 3.1
    Uninstalling Django-3.1:
      Successfully uninstalled Django-3.1
  Running setup.py develop for Django
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv
Successfully installed Django-3.1
+ git checkout 89d41cba392b759732ba9f1db4ff29ed47da6a56 tests/migrations/test_writer.py
Updated 0 paths from 9b795acf4b
+ git apply -v -
Checking patch tests/migrations/test_writer.py...
Applied patch tests/migrations/test_writer.py cleanly.
+ : '>>>>> Start Test Output'
+ ./tests/runtests.py --verbosity 2 --settings=test_sqlite --parallel 1 migrations.test_writer
test_args_kwargs_signature (migrations.test_writer.OperationWriterTests) ... ok
test_args_signature (migrations.test_writer.OperationWriterTests) ... ok
test_empty_signature (migrations.test_writer.OperationWriterTests) ... ok
test_expand_args_signature (migrations.test_writer.OperationWriterTests) ... ok
test_kwargs_signature (migrations.test_writer.OperationWriterTests) ... ok
test_multiline_args_signature (migrations.test_writer.OperationWriterTests) ... ok
test_nested_args_signature (migrations.test_writer.OperationWriterTests) ... ok
test_nested_operation_expand_args_signature (migrations.test_writer.OperationWriterTests) ... ok
test_custom_operation (migrations.test_writer.WriterTests) ... ok
test_deconstruct_class_arguments (migrations.test_writer.WriterTests) ... FAIL
test_migration_file_header_comments (migrations.test_writer.WriterTests) ... ok
test_migration_path (migrations.test_writer.WriterTests) ... ok
test_models_import_omitted (migrations.test_writer.WriterTests) ... ok
test_register_non_serializer (migrations.test_writer.WriterTests) ... ok
test_register_serializer (migrations.test_writer.WriterTests) ... ok
test_serialize_builtin_types (migrations.test_writer.WriterTests) ... ok
test_serialize_builtins (migrations.test_writer.WriterTests) ... ok
test_serialize_choices (migrations.test_writer.WriterTests) ... FAIL
test_serialize_class_based_validators (migrations.test_writer.WriterTests) ... ok
test_serialize_collections (migrations.test_writer.WriterTests) ... ok
test_serialize_compiled_regex (migrations.test_writer.WriterTests) ... ok
test_serialize_constants (migrations.test_writer.WriterTests) ... ok
test_serialize_datetime (migrations.test_writer.WriterTests) ... ok
test_serialize_empty_nonempty_tuple (migrations.test_writer.WriterTests) ... ok
test_serialize_enums (migrations.test_writer.WriterTests) ... FAIL
test_serialize_fields (migrations.test_writer.WriterTests) ... FAIL
test_serialize_frozensets (migrations.test_writer.WriterTests) ... ok
test_serialize_functions (migrations.test_writer.WriterTests) ... ok
test_serialize_functools_partial (migrations.test_writer.WriterTests) ... ok
test_serialize_functools_partialmethod (migrations.test_writer.WriterTests) ... ok
test_serialize_iterators (migrations.test_writer.WriterTests) ... ok
test_serialize_lazy_objects (migrations.test_writer.WriterTests) ... ok
test_serialize_local_function_reference (migrations.test_writer.WriterTests)
A reference in a local scope can't be serialized. ... ok
test_serialize_managers (migrations.test_writer.WriterTests) ... ok
test_serialize_multiline_strings (migrations.test_writer.WriterTests) ... ok
test_serialize_nested_class (migrations.test_writer.WriterTests) ... test_serialize_numbers (migrations.test_writer.WriterTests) ... ok
test_serialize_range (migrations.test_writer.WriterTests) ... ok
test_serialize_set (migrations.test_writer.WriterTests) ... ok
test_serialize_settings (migrations.test_writer.WriterTests) ... ok
test_serialize_strings (migrations.test_writer.WriterTests) ... ok
test_serialize_timedelta (migrations.test_writer.WriterTests) ... ok
test_serialize_type_none (migrations.test_writer.WriterTests) ... ok
test_serialize_unbound_method_reference (migrations.test_writer.WriterTests)
An unbound method used within a class body can be serialized. ... ok
test_serialize_uuid (migrations.test_writer.WriterTests) ... FAIL
test_simple_migration (migrations.test_writer.WriterTests) ... FAIL
test_sorted_imports (migrations.test_writer.WriterTests) ... FAIL

======================================================================
FAIL: test_deconstruct_class_arguments (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 751, in test_deconstruct_class_arguments
    self.assertEqual(string, "models.CharField(default=migrations.test_writer.DeconstructibleInstances)")
AssertionError: 'django.db.models.CharField(default=migrat[38 chars]ces)' != 'models.CharField(default=migrations.test_[28 chars]ces)'
- django.db.models.CharField(default=migrations.test_writer.DeconstructibleInstances)
? ----------
+ models.CharField(default=migrations.test_writer.DeconstructibleInstances)


======================================================================
FAIL: test_serialize_choices (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 376, in test_serialize_choices
    "models.CharField(choices=[('A', 'A value'), ('B', 'B value')], "
AssertionError: "django.db.models.CharField(choices=[('A',[40 chars]'B')" != "models.CharField(choices=[('A', 'A value'[30 chars]'B')"
- django.db.models.CharField(choices=[('A', 'A value'), ('B', 'B value')], default='B')
? ----------
+ models.CharField(choices=[('A', 'A value'), ('B', 'B value')], default='B')


======================================================================
FAIL: test_serialize_enums (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 317, in test_serialize_enums
    "models.CharField(choices=["
AssertionError: "django.db.models.CharField(choices=[('a-v[139 chars]B'])" != "models.CharField(choices=[('a-value', mig[129 chars]B'])"
- django.db.models.CharField(choices=[('a-value', migrations.test_writer.TextEnum['A']), ('value-b', migrations.test_writer.TextEnum['B'])], default=migrations.test_writer.TextEnum['B'])
? ----------
+ models.CharField(choices=[('a-value', migrations.test_writer.TextEnum['A']), ('value-b', migrations.test_writer.TextEnum['B'])], default=migrations.test_writer.TextEnum['B'])


======================================================================
FAIL: test_serialize_fields (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 466, in test_serialize_fields
    ("models.CharField(max_length=255)", {"from django.db import models"})
  File "/testbed/tests/migrations/test_writer.py", line 219, in assertSerializedResultEqual
    self.assertEqual(MigrationWriter.serialize(value), target)
AssertionError: Tuples differ: ('django.db.models.CharField(max_length=255[34 chars]ds'}) != ('models.CharField(max_length=255)', {'from[22 chars]ls'})

First differing element 0:
'django.db.models.CharField(max_length=255)'
'models.CharField(max_length=255)'

+ ('models.CharField(max_length=255)', {'from django.db import models'})
- ('django.db.models.CharField(max_length=255)',
-  {'import django.db.models.fields'})

======================================================================
FAIL: test_serialize_nested_class (migrations.test_writer.WriterTests) [NestedEnum]
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 403, in test_serialize_nested_class
    {'import migrations.test_writer'},
  File "/testbed/tests/migrations/test_writer.py", line 219, in assertSerializedResultEqual
    self.assertEqual(MigrationWriter.serialize(value), target)
AssertionError: Tuples differ: ('mig[15 chars]iter.NestedEnum', {'import migrations.test_writer'}) != ('mig[15 chars]iter.WriterTests.NestedEnum', {'import migrati[13 chars]er'})

First differing element 0:
'migrations.test_writer.NestedEnum'
'migrations.test_writer.WriterTests.NestedEnum'

- ('migrations.test_writer.NestedEnum', {'import migrations.test_writer'})
+ ('migrations.test_writer.WriterTests.NestedEnum',
+  {'import migrations.test_writer'})

======================================================================
FAIL: test_serialize_nested_class (migrations.test_writer.WriterTests) [NestedChoices]
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 403, in test_serialize_nested_class
    {'import migrations.test_writer'},
  File "/testbed/tests/migrations/test_writer.py", line 219, in assertSerializedResultEqual
    self.assertEqual(MigrationWriter.serialize(value), target)
AssertionError: Tuples differ: ('mig[15 chars]iter.NestedChoices', {'import migrations.test_writer'}) != ('mig[15 chars]iter.WriterTests.NestedChoices', {'import migr[16 chars]er'})

First differing element 0:
'migrations.test_writer.NestedChoices'
'migrations.test_writer.WriterTests.NestedChoices'

- ('migrations.test_writer.NestedChoices', {'import migrations.test_writer'})
+ ('migrations.test_writer.WriterTests.NestedChoices',
+  {'import migrations.test_writer'})

======================================================================
FAIL: test_serialize_uuid (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 426, in test_serialize_uuid
    "models.UUIDField(choices=["
AssertionError: "django.db.models.UUIDField(choices=[(uuid[176 chars]8'))" != "models.UUIDField(choices=[(uuid.UUID('5c8[166 chars]8'))"
- django.db.models.UUIDField(choices=[(uuid.UUID('5c859437-d061-4847-b3f7-e6b78852f8c8'), 'UUID A'), (uuid.UUID('c7853ec1-2ea3-4359-b02d-b54e8f1bcee2'), 'UUID B')], default=uuid.UUID('5c859437-d061-4847-b3f7-e6b78852f8c8'))
? ----------
+ models.UUIDField(choices=[(uuid.UUID('5c859437-d061-4847-b3f7-e6b78852f8c8'), 'UUID A'), (uuid.UUID('c7853ec1-2ea3-4359-b02d-b54e8f1bcee2'), 'UUID B')], default=uuid.UUID('5c859437-d061-4847-b3f7-e6b78852f8c8'))


======================================================================
FAIL: test_simple_migration (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 203, in safe_exec
    exec(string, globals(), d)
  File "<string>", line 8, in <module>
NameError: name 'django' is not defined

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 647, in test_simple_migration
    result = self.safe_exec(output)
  File "/testbed/tests/migrations/test_writer.py", line 208, in safe_exec
    self.fail("Could not exec %r: %s" % (string.strip(), e))
AssertionError: Could not exec "# Generated by Django 3.1 on 2026-07-26 06:30\n\nimport datetime\nfrom django.db import migrations\nimport django.db.models.fields\n\n\nclass Migration(migrations.Migration):\n\n    dependencies = [\n        ('testapp', 'some_other_one'),\n    ]\n\n    operations = [\n        migrations.CreateModel(\n            name='MyModel',\n            fields=[\n                ('charfield', django.db.models.DateTimeField(default=datetime.datetime.utcnow)),\n                ('datetimefield', django.db.models.DateTimeField(default=datetime.datetime.utcnow)),\n            ],\n            options={\n                'verbose_name': 'My model',\n                'verbose_name_plural': 'My models',\n            },\n        ),\n        migrations.CreateModel(\n            name='MyModel2',\n            fields=[\n                ('charfield', django.db.models.DateTimeField(default=datetime.datetime.utcnow)),\n                ('datetimefield', django.db.models.DateTimeField(default=datetime.datetime.utcnow)),\n            ],\n        ),\n        migrations.CreateModel(\n            name='MyModel3',\n            fields=[\n                ('charfield', django.db.models.DateTimeField(default=datetime.datetime.utcnow)),\n                ('datetimefield', django.db.models.DateTimeField(default=datetime.datetime.utcnow)),\n            ],\n            options={\n                'verbose_name': 'My model',\n                'verbose_name_plural': 'My models',\n            },\n        ),\n        migrations.DeleteModel(\n            name='MyModel',\n        ),\n        migrations.AddField(\n            model_name='OtherModel',\n            name='datetimefield',\n            field=django.db.models.DateTimeField(default=datetime.datetime.utcnow),\n        ),\n    ]": name 'django' is not defined
Testing against Django installed in '/testbed/django'
Importing application migrations
Skipping setup of unused database(s): default, other.
System check identified no issues (0 silenced).

======================================================================
FAIL: test_sorted_imports (migrations.test_writer.WriterTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/testbed/tests/migrations/test_writer.py", line 702, in test_sorted_imports
    output
AssertionError: 'import datetime\nfrom django.db import migrations, models\nfrom django.utils.timezone import utc\n' not found in "# Generated by Django 3.1 on 2026-07-26 06:30\n\nimport datetime\nfrom django.db import migrations\nimport django.db.models.fields\nfrom django.utils.timezone import utc\n\n\nclass Migration(migrations.Migration):\n\n    dependencies = [\n    ]\n\n    operations = [\n        migrations.AddField(\n            model_name='mymodel',\n            name='myfield',\n            field=django.db.models.DateTimeField(default=datetime.datetime(2012, 1, 1, 1, 1, tzinfo=utc)),\n        ),\n    ]\n"

----------------------------------------------------------------------
Ran 47 tests in 0.024s

FAILED (failures=9)
+ : '>>>>> End Test Output'
+ git checkout 89d41cba392b759732ba9f1db4ff29ed47da6a56 tests/migrations/test_writer.py
Updated 1 path from 9b795acf4b
