Django自定义中间件检查具有有效请求标头令牌的标头token.Tests仍然失败

# middleware.py

from django.http import HttpResponse

class TokenMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        # 检查请求头中是否包含有效的令牌
        token = request.META.get('HTTP_TOKEN')
        if not self.is_valid_token(token):
            return HttpResponse('Invalid token', status=401)

        response = self.get_response(request)
        return response

    def is_valid_token(self, token):
        # 在这里编写验证令牌的逻辑
        # 如果令牌有效，返回True；否则返回False
        # 可以使用任何适合您的验证方法，例如数据库查询或API调用

        # 示例：假设有效的令牌是"valid_token"
        return token == "valid_token"

MIDDLEWARE = [
    # 其他中间件...
    'myapp.middleware.TokenMiddleware',
]

from django.test import TestCase
from django.urls import reverse

class TokenMiddlewareTest(TestCase):
    def test_invalid_token(self):
        response = self.client.get(reverse('my-view'), HTTP_TOKEN='invalid_token')
        self.assertEqual(response.status_code, 401)

    def test_valid_token(self):
        response = self.client.get(reverse('my-view'), HTTP_TOKEN='valid_token')
        self.assertNotEqual(response.status_code, 401)

python manage.py test