无法运行测试模型用例

来源：8-16 模型类的测试用例

Sliver_Horn

2019-09-19

图片描述
下面是一个报错信息

Error
Traceback (most recent call last):
  File "/home/sliver_horn/my_bolg/my_bolg/qa/tests/test_models.py", line 19, in setUp
    tags="测试标签1, 测试标签2"
  File "/home/sliver_horn/my_bolg/venv/lib/python3.7/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/sliver_horn/my_bolg/venv/lib/python3.7/site-packages/django/db/models/query.py", line 413, in create
    obj.save(force_insert=True, using=self.db)
  File "/home/sliver_horn/my_bolg/my_bolg/qa/models.py", line 109, in save
    super(Question, self).save(*args, *kwargs)
  File "/home/sliver_horn/my_bolg/venv/lib/python3.7/site-packages/django/db/models/base.py", line 679, in save
    raise ValueError("Cannot force both insert and updating in model saving.")
ValueError: Cannot force both insert and updating in model saving.

写回答

1回答

Jack

2019-09-21

用例全跑不了应该是哪里写错了，tags="标签1, 标签2"是英文逗号隔开

你可以对照一下我的

#!/usr/bin/python3
# -*- coding:utf-8 -*-
# __author__ = '__Jack__'

import json
from django.test import RequestFactory
from test_plus.test import CBVTestCase
from django.contrib.messages.storage.fallback import FallbackStorage

from zanhu.qa.models import Question, Answer
from zanhu.qa import views

class BaseQATest(CBVTestCase):

def setUp(self):
self.user = self.make_user("user01")
self.other_user = self.make_user("user02")
self.question_one = Question.objects.create(
user=self.user,
title="问题1",
content="问题1的内容",
tags="测试1, 测试2"
)
self.question_two = Question.objects.create(
user=self.user,
title="问题2",
content="问题2的内容",
has_answer=True,
tags="测试1, 测试2"
)
self.answer = Answer.objects.create(
user=self.user,
question=self.question_two,
content="问题2被采纳的回答",
is_answer=True
)

self.request = RequestFactory().get('/fake-url')
self.request.user = self.user

class TestQuestionListView(BaseQATest):
"""测试问题列表"""

def test_context_data(self):
response = self.get(views.QuestionListView, request=self.request)

self.assertEqual(response.status_code, 200)

self.assertQuerysetEqual(response.context_data['questions'],
map(repr, [self.question_one, self.question_two]), ordered=False)

self.assertTrue(all(a == b for a, b in zip(response.context_data['questions'], Question.objects.all())))

self.assertContext('popular_tags', Question.objects.get_counted_tags())
self.assertContext('active', 'all')

class TestAnsweredQuestionListView(BaseQATest):
"""测试已回答问题列表"""

def test_context_data(self):
response = self.get(views.AnsweredQuestionListView, request=self.request) # 方式一
# response = views.AnsweredQuestionListView.as_view()(self.request) # 方式二

self.assertEqual(response.status_code, 200)
self.assertQuerysetEqual(response.context_data['questions'], [repr(self.question_two)])
self.assertContext('active', 'answered') # 对应方式一
# self.assertEqual(response.context_data['active'], 'answered') # 对应方式二

class TestUnansweredQuestionListView(BaseQATest):
"""测试未回答问题列表"""

def test_context_data(self):
response = self.get(views.UnansweredQuestionListView, request=self.request) # 方式一
self.assertEqual(response.status_code, 200) # 或者 self.response_200(response)
self.assertQuerysetEqual(response.context_data['questions'], [repr(self.question_one)])
self.assertContext('active', 'unanswered')

class TestCreateQuestionView(BaseQATest):
"""测试创建问题"""

def test_get(self):
response = self.get(views.CreateQuestionView, request=self.request)
self.response_200(response)

self.assertContains(response, '标题')
self.assertContains(response, '编辑')
self.assertContains(response, '预览')
self.assertContains(response, '标签')
self.assertIsInstance(response.context_data['view'], views.CreateQuestionView)

def test_post(self):
data = {'title': 'title', 'content': 'content', 'tags': 'tag1,tag2', 'status': 'O'}
request = RequestFactory().post('/fake-url', data=data)
request.user = self.user
# RequestFactory测试含有django.contrib.messages的视图 https://code.djangoproject.com/ticket/17971
setattr(request, 'session', 'session')
messages = FallbackStorage(request)
setattr(request, '_messages', messages)

response = self.post(views.CreateQuestionView, request=request)
assert response.status_code == 302
assert response.url == '/qa/'

class TestQuestionDetailView(BaseQATest):
"""测试问题详情"""

def get_context_data(self):
response = self.get(views.QuestionDetailView, request=self.request,
pk=self.question_one.id)
self.response_200(response)
self.assertEqual(response.context_data['question'], self.question_one)

class TestCreateAnswerView(BaseQATest):
"""测试创建回答"""

def test_get(self):
response = self.get(views.CreateAnswerView, request=self.request,
question_id=self.question_one.id)
self.response_200(response)
self.assertContains(response, '编辑')
self.assertContains(response, '预览')
self.assertIsInstance(response.context_data['view'], views.CreateAnswerView)

def get_post(self):
request = RequestFactory().post('/fake-url', data={'content': 'content'})
request.user = self.user
# RequestFactory测试含有django.contrib.messages的视图 https://code.djangoproject.com/ticket/17971
setattr(request, 'session', 'session')
messages = FallbackStorage(request)
setattr(request, '_messages', messages)

response = self.post(views.CreateAnswerView, request=request)
assert response.status_code == 302
assert response.url == f'/qa/question-detail/{self.question_one.id}'

class TestQAVote(BaseQATest):

def setUp(self):
super(TestQAVote, self).setUp()
self.request = RequestFactory().post('/fake-url', HTTP_X_REQUESTED_WITH='XMLHttpRequest')
# QueryDict instance is immutable, request.POST是QueryDict对象，不可变
self.request.POST = self.request.POST.copy()

self.request.user = self.other_user

def test_question_upvote(self):
"""赞同问题"""
self.request.POST['question'] = self.question_one.id
self.request.POST['value'] = 'U'

response = views.question_vote(self.request)

assert response.status_code == 200
assert json.loads(response.content)['votes'] == 1

def test_question_downvote(self):
"""反对问题"""
self.request.POST['question'] = self.question_two.id
self.request.POST['value'] = 'D'

response = views.question_vote(self.request)

assert response.status_code == 200
assert json.loads(response.content)['votes'] == -1

def test_answer_upvote(self):
"""赞同问答"""
self.request.POST['answer'] = self.answer.uuid_id
self.request.POST['value'] = 'U'

response = views.answer_vote(self.request)

assert response.status_code == 200
assert json.loads(response.content)['votes'] == 1

def test_answer_downvote(self):
"""反对回答"""
self.request.POST['answer'] = self.answer.uuid_id
self.request.POST['value'] = 'D'

response = views.answer_vote(self.request)

assert response.status_code == 200
assert json.loads(response.content)['votes'] == -1

def test_accept_answer(self):
"""接受回答"""

self.request.user = self.user # self.user是提问者
self.request.POST['answer'] = self.answer.uuid_id

response = views.accept_answer(self.request)

assert response.status_code == 200
assert json.loads(response.content)['status'] == 'true'