new_contents: from django.test import TestCase, Client
  from django.contrib.auth.models import User
  from jwt_auth.views import AuthViews
  import json
  
  class JwtAuthTestCase(TestCase):
      def setUp(self):
          u = User.objects.create_user(username="codert", password="87654321")
          u.save()
  
      def test_token_request(self):
          c1 = Client()
          c2 = Client()
          c3 = Client()
          c4 = Client()
          encoder = json.JSONEncoder()
  
          r1 = c1.post('/auth', encoder.encode({ "username": "codert", "pwd": "87654321" }), content_type="application/json")
          r2 = c2.post('/auth', encoder.encode({ "username": "codert", "xx": "xxxxxxxx" }), content_type="application/json")
          r3 = c3.post('/auth', encoder.encode({ "username": "codert", "pwd": "12345678" }), content_type="application/json")
          r4 = c4.post('/auth', encoder.encode({ "username": "donotexist", "pwd": "12345678" }), content_type="application/json")
  
          self.assertEqual(201, r1.status_code)
          self.assertEqual(r2.json()['detail'], '不完整的验证信息')
          self.assertEqual(r3.json()['detail'], '验证信息错误')
          self.assertEqual(r3.json()['detail'], '验证信息错误')
  
subject: Add test