单元测试引导模式Redi

Question

我无法在IRC上解决这个问题，希望能在这里找到一些指导。我做了以下测试：

def test_validation_errors_return_hops_list_page(self):
    response = self.client.post(
        '/beerdb/add/hops',
        data={
            'name': '',
            'min_alpha_acid': '',
            'max_alpha_acid': '',
            'country': '',
            'comments': ''
        }, follow=True
    )

    self.assertEqual(response.status_code, 200)
    self.assertTemplateUsed(response, 'homebrewdatabase/addhops.html')
    name_validation_error = escape("A hop name is required")
    min_alpha_acid_error = escape("You must enter a min alpha acid")
    max_alpha_acid_error = escape("You must enter a max alpha acid")
    country_error = escape("You must enter a country")
    comments_error = escape("You must enter a comment")

    self.assertContains(response, name_validation_error)
    self.assertContains(response, min_alpha_acid_error)
    self.assertContains(response, max_alpha_acid_error)
    self.assertContains(response,country_error)
    self.assertContains(response, comments_error)

它在self.assertContains(response, name_validation_error)上失败。追溯到这里：

Failure
Traceback (most recent call last):
File "/Users/USER/workspace/PycharmProjects/hashtagbrews/homebrewdatabase/tests/test_views.py", line 189, in test_validation_errors_return_hops_list_page
self.assertContains(response, name_validation_error)
File "/Users/USER/workspace/Envs/hashtagbrews/lib/python3.4/site-packages/django/test/testcases.py", line 398, in assertContains
msg_prefix + "Couldn't find %s in response" % text_repr)
AssertionError: False is not true : Couldn't find 'A hop name is required' in response

我的观点视图.py当窗体无效时，呈现带有错误的hops.html模板：

def addhops(request):

    add_form = HopForm(request.POST or None)

    if request.method == 'POST':
        if add_form.is_valid():
            Hop.objects.create(name=request.POST['name'],
                           min_alpha_acid=request.POST['min_alpha_acid'],
                           max_alpha_acid=request.POST['max_alpha_acid'],
                           country=request.POST['country'],
                           comments=request.POST['comments']
                           )
        return redirect('hops_list')
    else:
        hops_list = Hop.objects.all()
        return render(request, 'homebrewdatabase/hops.html', {'hops': hops_list, 'form': add_form})
return render(request, 'homebrewdatabase/addhops.html', {'form': add_form})

当我手动点击这个站点时，我得到的正是我想要的：一个从modal重定向到main hops页面列表，顶部有一个Bootstrap警报框，其中包含一个无序的add错误列表_跳跃。错误. 我已经打印出post请求（self.client.post('url', data={invalid data})）之后的响应，它只包含模态形式。完成这个测试的正确方法是什么？或者我需要重写我的表单验证吗？你知道吗

Answer 1

这里的问题，如注释中所示，是Django测试客户机在执行post请求之后在addhopsview方法上运行GET请求。根据视图逻辑，如果方法不是POST，则返回bootstrap模式，该模式不包含设计的表单错误。所以当使用测试客户机时，测试将失败。但是，测试可以改为使用HttpRequest对象在POST请求中发送无效数据，然后断言内容包含表单错误。所以我重写了测试，使用下面的，通过了

def test_validation_errors_return_hops_list_page(self):
    request = HttpRequest()

    request.method = 'POST'
    request.POST['name'] = ''
    request.POST['min_alpha_acid'] = ''
    request.POST['max_alpha_acid'] = ''
    request.POST['country'] = 'USA'
    request.POST['comments'] = ''

    response = addhops(request)

    self.assertEqual(response.status_code, 200)
    name_validation_error = escape("A hop name is required")
    min_alpha_acid_error = escape("You must enter a min alpha acid")
    max_alpha_acid_error = escape("You must enter a max alpha acid")
    comments_error = escape("You must enter a comment")

    self.assertContains(response, name_validation_error)
    self.assertContains(response, min_alpha_acid_error)
    self.assertContains(response, max_alpha_acid_error)
    self.assertContains(response, comments_error)

我不能断言使用了哪个模板，因为assertTemplateUsed是属于测试客户机的方法，但是使用selenium进行的功能测试应该足以检查所需元素是否在呈现视图中。这一点将来可能要改变，但就目前而言，这已经足够了。你知道吗