我应该如何在Django中为Forms编写测试？

Question

我想编写测试时,我想在Django中模拟我的观点请求.这主要是为了测试表格.这是一个简单测试请求的片段:

from django.tests import TestCase

class MyTests(TestCase):
    def test_forms(self):
        response = self.client.post("/my/form/", {'something':'something'})
        self.assertEqual(response.status_code, 200) # we get our page back with an error

无论是否存在表单错误,页面始终返回200的响应.如何检查我的表单失败以及特定字段(soemthing)是否有错误？

Answer 1

我想如果您只是想测试表单,那么您应该只测试表单而不是表单呈现的视图.获得一个想法的例子:

from django.test import TestCase
from myapp.forms import MyForm

class MyTests(TestCase):
    def test_forms(self):
        form_data = {'something': 'something'}
        form = MyForm(data=form_data)
        self.assertTrue(form.is_valid())
        ... # other tests relating forms, for example checking the form data

Answer 2

https://docs.djangoproject.com/en/stable/topics/testing/tools/#django.test.SimpleTestCase.assertFormError

from django.tests import TestCase

class MyTests(TestCase):
    def test_forms(self):
        response = self.client.post("/my/form/", {'something':'something'})
        self.assertFormError(response, 'form', 'something', 'This field is required.')

其中"form"是表单的上下文变量名称,"something"是字段名称,"This field is required".是预期验证错误的确切文本.

Answer 3

最初的2011年答案是

self.assertContains(response, "Invalid message here", 1, 200)

但我现在看到(2018年)有一大堆适用的断言:

• assertRaisesMessage
• assertFieldOutput
• assertFormError
• assertFormsetError

随便挑选.