Fixed #19378 -- Ensured get_success_url returns a non-lazy URL

from django.forms import models as model_forms

from django.core.exceptions import ImproperlyConfigured

from django.http import HttpResponseRedirect

from django.utils.encoding import force_text

from django.views.generic.base import TemplateResponseMixin, ContextMixin, View

from django.views.generic.detail import (SingleObjectMixin,

                        SingleObjectTemplateResponseMixin, BaseDetailView)

        Returns the supplied success URL.

        """

        if self.success_url:

            url = self.success_url

            # Forcing possible reverse_lazy evaluation

            url = force_text(self.success_url)

        else:

            raise ImproperlyConfigured(

                "No URL to redirect to. Provide a success_url.")

         initial_2 = FormMixin().get_initial()

         self.assertNotEqual(initial_1, initial_2)

class BasicFormTests(TestCase):

    urls = 'regressiontests.generic_views.urls'

    def test_post_data(self):

        res = self.client.post('/contact/', {'name': "Me", 'message': "Hello"})

        self.assertRedirects(res, 'http://testserver/list/authors/')

class ModelFormMixinTests(TestCase):

    def test_get_form(self):

        form_class = views.AuthorGetQuerySetFormView().get_form_class()

    class Meta:

        model = Author

class ContactForm(forms.Form):

    name = forms.CharField()

    message = forms.CharField(widget=forms.Textarea)

    MonthArchiveViewTests, WeekArchiveViewTests, DayArchiveViewTests,

    DateDetailViewTests)

from .detail import DetailViewTest

from .edit import (FormMixinTests, ModelFormMixinTests, CreateViewTests,

    UpdateViewTests, DeleteViewTests)

from .edit import (FormMixinTests, BasicFormTests, ModelFormMixinTests,

    CreateViewTests, UpdateViewTests, DeleteViewTests)

from .list import ListViewTests

    (r'^detail/nonmodel/1/$',

        views.NonModelDetail.as_view()),

    # FormView

    (r'^contact/$',

        views.ContactView.as_view()),

    # Create/UpdateView

    (r'^edit/artists/create/$',

        views.ArtistCreate.as_view()),