Sunday, July 31, 2016

Re: Testing if a view have an html element with at least one attribute

Jupp, thats about what I meant :-)

Probably the best way, if you don't want to check text.

Regards,

Andréas

2016-07-31 18:01 GMT+02:00 ludovic coues <couesl@gmail.com>:
Currently, I am using lxml. More dependencies but it's the cleanest
method I've found currently.
I use it like that:

    from django.test import TestCase
    from lxml import etree

    class FormTest(TestCase):
        def test_input(self):
            response = self.client.get('/accounts/login')
            self.assertEqual(response.status_code, 200)
            doc = etree.HTML(response.content)
            self.assertEqual(len(doc.findall('.//input[@name="username"]')), 1)



2016-07-31 17:46 GMT+02:00 Andreas Kuhne <andreas.kuhne@suitopia.com>:
> 2016-07-31 15:59 GMT+02:00 ludovic coues <couesl@gmail.com>:
>>
>> Oh, sorry. A bit of misunderstanding and miscommunication on my part.
>>
>> The exemple I gave is just a quick way to reproduce my problem. The
>> real test use self.client, reverse, cast response.content to a string.
>> What I gave is a minimal exemple.
>>
>> Also, I assumed you talked about comparing bit of html element, not
>> the raw content returned by the view. I'm quite uneasy to have the
>> test failing if a class is added or removed from the element. But yes,
>> your solution work for the current state of the application.
>>
>> 2016-07-31 14:46 GMT+02:00 Andreas Kuhne <andreas.kuhne@suitopia.com>:
>> > 2016-07-31 13:56 GMT+02:00 ludovic coues <couesl@gmail.com>:
>> >>
>> >> First, thanks for the suggestion.
>> >>
>> >> I just tried that, didn't work.
>> >> Here is the test file I used:
>> >>
>> >>
>> >>     from django.test import TestCase
>> >>
>> >>     class HTMLTestCase(TestCase):
>> >>
>> >>         def test_input_in_fieldset(self):
>> >>             fieldset = """
>> >>         <fieldset class="form-group">
>> >>             <input name="login">
>> >>             <input autofocus="" class="form-control" id="id_username"
>> >> maxlength="254" name="username" rows="3" type="text" required />
>> >>         </fieldset>
>> >>     """
>> >>             self.assertInHTML('<input name=login>', fieldset)
>> >>             self.assertInHTML('<input name="username">', fieldset)
>> >>
>> >>
>> >> First input is to have a working exemple, second is taken as is from
>> >> my view. Not closing the input in assertInHTML give an error `Couldn't
>> >> find '<input name="login"' in response`. I assume I would get the same
>> >> errors with assertContains(*args, html=True)
>> >>
>> >> I could copy/past the input directly in my test but if the maxlength
>> >> or class attribute change, the test will break. Taking the input
>> >> directly from the django form will test if the django form is rendered
>> >> in the view, not if the view is displaying a suitable form.
>> >>
>> >> 2016-07-31 13:22 GMT+02:00 Andreas Kuhne <andreas.kuhne@suitopia.com>:
>> >> > 2016-07-31 12:38 GMT+02:00 ludovic coues <couesl@gmail.com>:
>> >> >>
>> >> >> Hello,
>> >> >>
>> >> >> I am trying to test if a view is displaying a form with an input
>> >> >> element with name=username.
>> >> >>
>> >> >> Currently, I have tried a lot of variation around
>> >> >> `self.assertContains( response, "<input name=\"username\">",
>> >> >> html=True)` but none work.
>> >> >> I assume that doesn't work because the view have a field input with
>> >> >> name=username but also autofocus="", a class and a bunch of other
>> >> >> attribute.
>> >> >>
>> >> >> I could extract the form from the context and check the field
>> >> >> username
>> >> >> from the form is displayed in the view but I'm not ok with that
>> >> >> solution. I'm testing if there is a input with name=username, not a
>> >> >> bunch of unrelated attribute.
>> >> >>
>> >> >> I could also use a LiveServerTestCase and selenium but that look
>> >> >> like
>> >> >> a bit overkill for my need. lxml is another option but it would
>> >> >> bring
>> >> >> more dependencies.
>> >> >>
>> >> >> A bit of help would be welcome :)
>> >> >>
>> >> >>
>> >> >>
>> >> >> --
>> >> >>
>> >> >> Cordialement, Coues Ludovic
>> >> >> +336 148 743 42
>> >> >>
>> >> >> --
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>> >> >> Groups
>> >> >> "Django users" group.
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>> >> >> an
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>> >> >> To view this discussion on the web visit
>> >> >>
>> >> >>
>> >> >> https://groups.google.com/d/msgid/django-users/CAEuG%2BTah74hdZMv%2BwdZPPq5PLaJ%3DhxOFMNXuVLfFYSw2Uz4N0w%40mail.gmail.com.
>> >> >> For more options, visit https://groups.google.com/d/optout.
>> >> >
>> >> >
>> >> > Django usually creates the inputs the same way, so what I do in my
>> >> > tests
>> >> > is
>> >> > to first dump the content of the response body on the screen and then
>> >> > copy
>> >> > the input statement from there. What you probably need is '<input
>> >> > name="username"', because it doesn't matter for your test if the html
>> >> > tag is
>> >> > closed. So you should be fine with:
>> >> > self.assertContains(response, '<input name="username"')
>> >> >
>> >> > --
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>> >> > "Django users" group.
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>> >> > To view this discussion on the web visit
>> >> >
>> >> >
>> >> > https://groups.google.com/d/msgid/django-users/CALXYUbmmotLwzjZY6ZZnAqy21xqZN1%3DiE7ah3g5JxFgEw-POZg%40mail.gmail.com.
>> >> > For more options, visit https://groups.google.com/d/optout.
>> >>
>> >>
>> >>
>> >> --
>> >>
>> >> Cordialement, Coues Ludovic
>> >> +336 148 743 42
>> >>
>> >> --
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>> >> To view this discussion on the web visit
>> >>
>> >> https://groups.google.com/d/msgid/django-users/CAEuG%2BTZCWDkkrZuP2N168pth1hL-gc8FrVjMwZnb3xS%2BK1X%2Bxw%40mail.gmail.com.
>> >> For more options, visit https://groups.google.com/d/optout.
>> >
>> >
>> > Hi,
>> >
>> > I think you have misunderstood me.
>> >
>> > First you need to check against the real response object, otherwise your
>> > test will only test if the item is present in your string, which is not
>> > what
>> > I meant. I meant that you should check what HTML django is generating to
>> > then get the correct information.
>> >
>> > In your case, I am now guessing that the output of django is the
>> > information
>> > you put into the fieldset variable?
>> >
>> > If so, you need to write
>> > self.assertContains(response,'<input autofocus="" class="form-control"
>> > id="id_username" maxlength="254" name="username"')
>> >
>> > The assertContains does not parse the html in any way, but uses a search
>> > for
>> > the text you entered. So if the text has 'autofocus=""
>> > class="form-control"
>> > id="id_username" maxlength="254"' before 'name="username"', then you
>> > need to
>> > add that as well, otherwise you won't find the text at all.
>> >
>> > Regards,
>> >
>> > Andréas
>> >
>> >
>> > --
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>> > To view this discussion on the web visit
>> >
>> > https://groups.google.com/d/msgid/django-users/CALXYUbkp-oM3Y9dUYEcb8kbQT0kS95hDBqxVWMu8Cn-8iYQv3w%40mail.gmail.com.
>> >
>> > For more options, visit https://groups.google.com/d/optout.
>>
>>
>>
>> --
>>
>> Cordialement, Coues Ludovic
>> +336 148 743 42
>>
>> --
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>> For more options, visit https://groups.google.com/d/optout.
>
>
> Hi again,
>
> I understand your problem with a test failing if a class is added, however,
> there is no other way to check this (as far as I know). If you want to
> explicitly check for an input with the name "username", I would probably try
> using xml. That way you could use xpath to search quickly.
>
> Regards,
>
> Andréas
>
> --
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>
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--

Cordialement, Coues Ludovic
+336 148 743 42

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