我正在测试用户的创建，但由于给出的错误 TypeError: expected str, bytes or os.PathLike object, not NoneType，测试没有达到失败的测试。
我在使用 AbstractUser 时使用 pass 进行迁移，在 migrations/0001initial.py 文件中提供以下内容:
# Generated by Django 3.1.4 on 2021-07-12 15:00
import django.contrib.auth.models
import django.contrib.auth.validators
from django.db import migrations, models
import django.utils.timezone
class Migration(migrations.Migration):
initial = True
dependencies = [
('auth', '0012_alter_user_first_name_max_length'),
]
operations = [
migrations.CreateModel(
name='User',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('password', models.CharField(max_length=128, verbose_name='password')),
('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
('username', models.CharField(error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=150, unique=True, validators=[django.contrib.auth.validators.UnicodeUsernameValidator()], verbose_name='username')),
('first_name', models.CharField(blank=True, max_length=150, verbose_name='first name')),
('last_name', models.CharField(blank=True, max_length=150, verbose_name='last name')),
('email', models.EmailField(blank=True, max_length=254, verbose_name='email address')),
('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
('groups', models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.Group', verbose_name='groups')),
('user_permissions', models.ManyToManyField(blank=True, help_text='Specific permissions for this user.', related_name='user_set', related_query_name='user', to='auth.Permission', verbose_name='user permissions')),
],
options={
'verbose_name': 'user',
'verbose_name_plural': 'users',
'abstract': False,
},
managers=[
('objects', django.contrib.auth.models.UserManager()),
],
),
]
我使用的测试用例如下:
from django.contrib.auth import get_user_model
from rest_framework import status
from rest_framework.reverse import reverse
from rest_framework.test import APITestCase
PASSWORD = 'pAssw0rd!'
class AuthenticationTest(APITestCase):
def test_user_can_sign_up(self):
response = self.client.post(reverse('sign_up'), data={
'username': 'user@example.com',
'first_name': 'Test',
'last_name': 'User',
'password1': PASSWORD,
'password2': PASSWORD,
})
user = get_user_model().objects.last()
self.assertEqual(status.HTTP_201_CREATED, response.status_code)
self.assertEqual(response.data['id'], user.id)
self.assertEqual(response.data['username'], user.username)
self.assertEqual(response.data['first_name'], user.first_name)
self.assertEqual(response.data['last_name'], user.last_name)
所以当我运行 python manage.py test trips.tests 时，我得到了这个回溯错误:
Traceback (most recent call last):
File "/Users/roddelaporte/Documents/code/uber/server/manage.py", line 22, in <module>
main()
File "/Users/roddelaporte/Documents/code/uber/server/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/commands/test.py", line 23, in run_from_argv
super().run_from_argv(argv)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/base.py", line 330, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/base.py", line 371, in execute
output = self.handle(*args, **options)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/commands/test.py", line 53, in handle
failures = test_runner.run_tests(test_labels)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/test/runner.py", line 693, in run_tests
suite = self.build_suite(test_labels, extra_tests)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/test/runner.py", line 579, in build_suite
tests = self.test_loader.discover(start_dir=label, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/unittest/loader.py", line 306, in discover
os.path.dirname((the_module.__file__)))
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/posixpath.py", line 152, in dirname
p = os.fspath(p)
TypeError: expected str, bytes or os.PathLike object, not NoneType
知道为什么它会抛出这个 NoneType 吗？
编辑:这是文件树
server
|-- manage.py
|-- trips
| |-- __init__.py
| |-- __pycache__
| | |-- __init__.cpython-39.pyc
| | |-- admin.cpython-39.pyc
| | `-- models.cpython-39.pyc
| |-- admin.py
| |-- apps.py
| |-- migrations
| | |-- 0001_initial.py
| | |-- __init__.py
| | `-- __pycache__
| | |-- 0001_initial.cpython-39.pyc
| | `-- __init__.cpython-39.pyc
| |-- models.py
| |-- tests
| | `-- test_http.py
| `-- views.py
`-- uber
|-- __init__.py
|-- __pycache__
| |-- __init__.cpython-39.pyc
| |-- routing.cpython-39.pyc
| |-- settings.cpython-39.pyc
| |-- urls.cpython-39.pyc
| `-- wsgi.cpython-39.pyc
|-- asgi.py
|-- routing.py
|-- settings.py
|-- urls.py
`-- wsgi.py
编辑二:
我在 tests 目录中丢失了 __init__py 文件。但是我仍然得到相同的错误和不同的回溯:
Traceback (most recent call last):
File "/Users/roddelaporte/Documents/code/uber/server/manage.py", line 22, in <module>
main()
File "/Users/roddelaporte/Documents/code/uber/server/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/commands/test.py", line 23, in run_from_argv
super().run_from_argv(argv)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/base.py", line 330, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/base.py", line 371, in execute
output = self.handle(*args, **options)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/core/management/commands/test.py", line 53, in handle
failures = test_runner.run_tests(test_labels)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/test/runner.py", line 695, in run_tests
old_config = self.setup_databases(aliases=databases)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/test/runner.py", line 614, in setup_databases
return _setup_databases(
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/test/utils.py", line 157, in setup_databases
test_databases, mirrored_aliases = get_unique_databases_and_mirrors(aliases)
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/test/utils.py", line 258, in get_unique_databases_and_mirrors
default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/db/backends/base/creation.py", line 313, in test_db_signature
self._get_test_db_name(),
File "/Users/roddelaporte/Documents/code/uber/env/lib/python3.9/site-packages/django/db/backends/base/creation.py", line 171, in _get_test_db_name
return TEST_DATABASE_PREFIX + self.connection.settings_dict['NAME']
TypeError: can only concatenate str (not "NoneType") to str
最佳答案
产生错误是因为我忘记导出 Postgres 值，如下所示:
$ export PGDATABASE=dbname
$ export PGUSER=dbuser
$ export PGPASSWORD=dbpassword
关于django - 测试 : TypeError: expected str, 字节或 os.PathLike 对象，而不是 NoneType，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/68351549/