Python Pytest Django并不专门支持Django’；s多数据库和数据库访问失败不允许

我试图使用非托管（只读）模型运行multi-db设置测试。运行测试时，serailizers.py中的导入功能失败，无法访问测试数据库

设置.py pytest.ini models.py 序列化程序.py 服务.py tests.py 错误

apps/tests/tests.py:4:in
从apps.views导入(
：971:in_find_和_load？？？
：955:在“查找”和“加载”中解锁？？？
：665:in_load_unlocked？？？
/tmp/lib/python3.6/site-packages/\u-pytest/assertion/rewrite.py:149:in-exec\u-module-exec（co，module.\uu-dict\uu）
应用/视图。py:6:in
从apps.serializers导入(
：971:in_find_和_load？？？
：955:在“查找”和“加载”中解锁？？？
：665:in_load_unlocked？？？
/tmp/lib/python3.6/site-packages/\u-pytest/assertion/rewrite.py:149:in-exec\u-module-exec（co，module.\uu-dict\uu）
应用程序/序列化程序。py:9:in
类序列化程序（序列化程序.序列化程序）：
apps/serializer.py:13:在SearchSerializer中
required=False，style={'base_template'：'select_multiple.html'}
/tmp/lib/python3.6/site-packages/rest\u-framework/fields.py:1476:in\u-init__
超级（多回音场，自我）。\uuuuu初始值（*args，**kwargs）
/tmp/lib/python3.6/site-packages/rest\u-framework/fields.py:1417:in\u-init__
自我选择
/tmp/lib/python3.6/site packages/rest\u framework/fields.py:1453:in\u set\u选项
self.grouped_choices=to_choices_dict（选项）
/tmp/lib/python3.6/site packages/rest\u framework/fields.py:150:in to\u choices\u dict
选择中的选择：
/tmp/lib/python3.6/site-packages/django/db/models/query.py:274:in-iter-self.\u-fetch\u-all（）
/tmp/lib/python3.6/site packages/django/db/models/query.py:1242:in\u fetch\u all
self.\u result\u cache=list（self.\u iterable\u class（self））
/tmp/lib/python3.6/site packages/django/db/models/query.py:181:in\uu iter__
编译器=queryset.query.get\u编译器（queryset.db）
/tmp/lib/python3.6/site-packages/django/db/models/sql/query.py:289:in-get\u编译器
返回connection.ops.compiler（self.compiler）（self，connection，using）
/tmp/lib/python3.6/site-packages/django/db/backends/base/operations.py:330:in-compiler
self.\u cache=import\u模块（self.compiler\u模块）
/tmp/lib/python3.6/site-packages/django/utils/functional.py:80:in\uu-get__
res=instance.\uuuu dict\uuuu[self.name]=self.func（实例）
/tmp/lib/python3.6/site packages/django/db/backends/oracle/operations.py:587:在编译器_模块中
如果self.connection.features.has_fetch_offset_支持：
/tmp/lib/python3.6/site-packages/django/utils/functional.py:80:in\uu-get__
res=instance.\uuuu dict\uuuu[self.name]=self.func（实例）
/tmp/lib/python3.6/site-packages/django/db/backends/oracle/features.py:63:in支持获取偏移量
return self.connection.oracle_version>=（12,2）
/tmp/lib/python3.6/site-packages/django/utils/functional.py:80:in\uu-get__
res=instance.\uuuu dict\uuuu[self.name]=self.func（实例）
/tmp/lib/python3.6/site-packages/django/db/backends/oracle/base.py:311:in-oracle\u版本
使用self.temporary_connection（）：
/usr/local/lib/python3.6/contextlib.py:81:in\uu输入__
返回下一个（self.gen）
/tmp/lib/python3.6/site packages/django/db/backends/base/base.py:593:处于临时连接中
使用self.cursor（）作为光标：
/tmp/lib/python3.6/site-packages/django/db/backends/base/base.py:256:in-cursor
返回自我。_cursor（）
/tmp/lib/python3.6/site-packages/django/db/backends/base/base.py:233:in\u游标
self.sure_连接（）
E失败：不允许访问数据库，请使用“django_db”标记或“db”或“transactional_db”装置启用它。

首先，您同时使用两个测试库：unittest和pytest。

TestCase

和

RequestFactory

以及

setUp（）

是unittest模块的一部分。db fixture的行为很奇怪，但是您是否尝试将

db

fixture作为参数传递给测试函数？例如：``def test\u my_function（db）：``首先，您同时使用两个测试库：unittest和pytest。

TestCase

和

RequestFactory

以及

setUp（）

是unittest模块的一部分。db fixture的行为很奇怪，但是您是否尝试将

db

fixture作为参数传递给测试函数？例如：``def test\u my_function（db）：```

 if 'test' in sys.argv or 'test_coverage' in sys.argv: 
DATABASES = {                                                       
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': 'db.sqlite3',
    },
    'test_db': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': 'db.sqlite3',
    }
}
INSTALLED_APPS += ['test']

[pytest]
DJANGO_SETTINGS_MODULE=apps.settings

from django.db import models

class TestModelA(models.Model):
    testid = models.CharField(max_length=200)
    class Meta:
        managed = False
        db_table = 'TestD'

from rest_framework import serializers

from apps.services import get_testid

class SearchSerializer(serializers.Serializer):

application_names = serializers.MultipleChoiceField(
    choices=get_testid(),
    required=False, style={'base_template': 'select_multiple.html'}
)

from apps.models import TestModelA

def get_testid():
    return TestModelA.objects.values_list('testid ', flat=True)

import pytest

from django.test import RequestFactory, TestCase

from appsviews import (
    details
)

class MyTestCase(TestCase):

    def setUp(self):
        self.request = RequestFactory().get('/details/')

    @pytest.mark.django_db
    def test_my_function(self):
        response = details(self.request)
        self.assertEqual(response.status_code, 200)

apps/tests/tests.py:4: in <module>
from apps.views import (
<frozen importlib._bootstrap>:971: in _find_and_load???
<frozen importlib._bootstrap>:955: in _find_and_load_unlocked ???
<frozen importlib._bootstrap>:665: in _load_unlocked ???
/tmp/lib/python3.6/site-packages/_pytest/assertion/rewrite.py:149: in exec_module exec(co, module.__dict__)
apps/views.py:6: in <module>
from apps.serializers import (
<frozen importlib._bootstrap>:971: in _find_and_load ???
<frozen importlib._bootstrap>:955: in _find_and_load_unlocked ???
<frozen importlib._bootstrap>:665: in _load_unlocked ???
/tmp/lib/python3.6/site-packages/_pytest/assertion/rewrite.py:149: in exec_module exec(co, module.__dict__)
apps/serializers.py:9: in <module>
class Serializer(serializers.Serializer):
apps/serializers.py:13: in SearchSerializer
required=False, style={'base_template': 'select_multiple.html'}
/tmp/lib/python3.6/site-packages/rest_framework/fields.py:1476: in __init__
super(MultipleChoiceField, self).__init__(*args, **kwargs)
/tmp/lib/python3.6/site-packages/rest_framework/fields.py:1417: in __init__
self.choices = choices
/tmp/lib/python3.6/site-packages/rest_framework/fields.py:1453: in _set_choices
self.grouped_choices = to_choices_dict(choices)
/tmp/lib/python3.6/site-packages/rest_framework/fields.py:150: in to_choices_dict
for choice in choices:
/tmp/lib/python3.6/site-packages/django/db/models/query.py:274: in __iter__ self._fetch_all()
/tmp/lib/python3.6/site-packages/django/db/models/query.py:1242: in _fetch_all
self._result_cache = list(self._iterable_class(self))
/tmp/lib/python3.6/site-packages/django/db/models/query.py:181: in __iter__
compiler = queryset.query.get_compiler(queryset.db)
/tmp/lib/python3.6/site-packages/django/db/models/sql/query.py:289: in get_compiler
return connection.ops.compiler(self.compiler)(self, connection, using)
/tmp/lib/python3.6/site-packages/django/db/backends/base/operations.py:330: in compiler
self._cache = import_module(self.compiler_module)
/tmp/lib/python3.6/site-packages/django/utils/functional.py:80: in __get__
res = instance.__dict__[self.name] = self.func(instance)
/tmp/lib/python3.6/site-packages/django/db/backends/oracle/operations.py:587: in compiler_module
if self.connection.features.has_fetch_offset_support:
/tmp/lib/python3.6/site-packages/django/utils/functional.py:80: in __get__
res = instance.__dict__[self.name] = self.func(instance)
/tmp/lib/python3.6/site-packages/django/db/backends/oracle/features.py:63: in has_fetch_offset_support
return self.connection.oracle_version >= (12, 2)
/tmp/lib/python3.6/site-packages/django/utils/functional.py:80: in __get__
res = instance.__dict__[self.name] = self.func(instance)
/tmp/lib/python3.6/site-packages/django/db/backends/oracle/base.py:311: in oracle_version
with self.temporary_connection():
/usr/local/lib/python3.6/contextlib.py:81: in __enter__
return next(self.gen)
/tmp/lib/python3.6/site-packages/django/db/backends/base/base.py:593: in temporary_connection
with self.cursor() as cursor:
/tmp/lib/python3.6/site-packages/django/db/backends/base/base.py:256: in cursor
return self._cursor()
/tmp/lib/python3.6/site-packages/django/db/backends/base/base.py:233: in _cursor
self.ensure_connection()
E   Failed: Database access not allowed, use the "django_db" mark, or the "db" or "transactional_db" fixtures to enable it.