from selenium.common.exceptions import NoSuchElementException

from django.contrib.admin import ModelAdmin, TabularInline
from django.contrib.admin.helpers import InlineAdminForm
from django.contrib.admin.tests import AdminSeleniumTestCase
from django.contrib.auth.models import Permission, User
from django.contrib.contenttypes.models import ContentType
from django.test import RequestFactory, TestCase, override_settings
from django.urls import reverse

from .admin import InnerInline, site as admin_site
from .models import (
    Author, BinaryTree, Book, Chapter, Child, ChildModel1, ChildModel2,
    Fashionista, FootNote, Holder, Holder2, Holder3, Holder4, Inner, Inner2,
    Inner3, Inner4Stacked, Inner4Tabular, Novel, OutfitItem, Parent,
    ParentModelWithCustomPk, Person, Poll, Profile, ProfileCollection,
    Question, Sighting, SomeChildModel, SomeParentModel, Teacher,
)

INLINE_CHANGELINK_HTML = 'class="inlinechangelink">Change</a>'


class TestDataMixin:

    @classmethod
    def setUpTestData(cls):
        cls.superuser = User.objects.create_superuser(username='super', email='super@example.com', password='secret')


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInline(TestDataMixin, TestCase):
    factory = RequestFactory()

    @classmethod
    def setUpTestData(cls):
        super().setUpTestData()
        cls.holder = Holder.objects.create(dummy=13)
        Inner.objects.create(dummy=42, holder=cls.holder)

    def setUp(self):
        self.client.force_login(self.superuser)

    def test_can_delete(self):
        """
        can_delete should be passed to inlineformset factory.
        """
        response = self.client.get(
            reverse('admin:admin_inlines_holder_change', args=(self.holder.id,))
        )
        inner_formset = response.context['inline_admin_formsets'][0].formset
        expected = InnerInline.can_delete
        actual = inner_formset.can_delete
        self.assertEqual(expected, actual, 'can_delete must be equal')

    def test_readonly_stacked_inline_label(self):
        """Bug #13174."""
        holder = Holder.objects.create(dummy=42)
        Inner.objects.create(holder=holder, dummy=42, readonly='')
        response = self.client.get(
            reverse('admin:admin_inlines_holder_change', args=(holder.id,))
        )
        self.assertContains(response, '<label>Inner readonly label:</label>')

    def test_many_to_many_inlines(self):
        "Autogenerated many-to-many inlines are displayed correctly (#13407)"
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        # The heading for the m2m inline block uses the right text
        self.assertContains(response, '<h2>Author-book relationships</h2>')
        # The "add another" label is correct
        self.assertContains(response, 'Add another Author-book relationship')
        # The '+' is dropped from the autogenerated form prefix (Author_books+)
        self.assertContains(response, 'id="id_Author_books-TOTAL_FORMS"')

    def test_inline_primary(self):
        person = Person.objects.create(firstname='Imelda')
        item = OutfitItem.objects.create(name='Shoes')
        # Imelda likes shoes, but can't carry her own bags.
        data = {
            'shoppingweakness_set-TOTAL_FORMS': 1,
            'shoppingweakness_set-INITIAL_FORMS': 0,
            'shoppingweakness_set-MAX_NUM_FORMS': 0,
            '_save': 'Save',
            'person': person.id,
            'max_weight': 0,
            'shoppingweakness_set-0-item': item.id,
        }
        response = self.client.post(reverse('admin:admin_inlines_fashionista_add'), data)
        self.assertEqual(response.status_code, 302)
        self.assertEqual(len(Fashionista.objects.filter(person__firstname='Imelda')), 1)

    def test_tabular_inline_column_css_class(self):
        """
        Field names are included in the context to output a field-specific
        CSS class name in the column headers.
        """
        response = self.client.get(reverse('admin:admin_inlines_poll_add'))
        text_field, call_me_field = list(response.context['inline_admin_formset'].fields())
        # Editable field.
        self.assertEqual(text_field['name'], 'text')
        self.assertContains(response, '<th class="column-text required">')
        # Read-only field.
        self.assertEqual(call_me_field['name'], 'call_me')
        self.assertContains(response, '<th class="column-call_me">')

    def test_custom_form_tabular_inline_label(self):
        """
        A model form with a form field specified (TitleForm.title1) should have
        its label rendered in the tabular inline.
        """
        response = self.client.get(reverse('admin:admin_inlines_titlecollection_add'))
        self.assertContains(response, '<th class="column-title1 required">Title1</th>', html=True)

    def test_custom_form_tabular_inline_extra_field_label(self):
        response = self.client.get(reverse('admin:admin_inlines_outfititem_add'))
        _, extra_field = list(response.context['inline_admin_formset'].fields())
        self.assertEqual(extra_field['label'], 'Extra field')

    def test_non_editable_custom_form_tabular_inline_extra_field_label(self):
        response = self.client.get(reverse('admin:admin_inlines_chapter_add'))
        _, extra_field = list(response.context['inline_admin_formset'].fields())
        self.assertEqual(extra_field['label'], 'Extra field')

    def test_custom_form_tabular_inline_overridden_label(self):
        """
        SomeChildModelForm.__init__() overrides the label of a form field.
        That label is displayed in the TabularInline.
        """
        response = self.client.get(reverse('admin:admin_inlines_someparentmodel_add'))
        field = list(response.context['inline_admin_formset'].fields())[0]
        self.assertEqual(field['label'], 'new label')
        self.assertContains(response, '<th class="column-name required">New label</th>', html=True)

    def test_tabular_non_field_errors(self):
        """
        non_field_errors are displayed correctly, including the correct value
        for colspan.
        """
        data = {
            'title_set-TOTAL_FORMS': 1,
            'title_set-INITIAL_FORMS': 0,
            'title_set-MAX_NUM_FORMS': 0,
            '_save': 'Save',
            'title_set-0-title1': 'a title',
            'title_set-0-title2': 'a different title',
        }
        response = self.client.post(reverse('admin:admin_inlines_titlecollection_add'), data)
        # Here colspan is "4": two fields (title1 and title2), one hidden field and the delete checkbox.
        self.assertContains(
            response,
            '<tr><td colspan="4"><ul class="errorlist nonfield">'
            '<li>The two titles must be the same</li></ul></td></tr>'
        )

    def test_no_parent_callable_lookup(self):
        """Admin inline `readonly_field` shouldn't invoke parent ModelAdmin callable"""
        # Identically named callable isn't present in the parent ModelAdmin,
        # rendering of the add view shouldn't explode
        response = self.client.get(reverse('admin:admin_inlines_novel_add'))
        self.assertEqual(response.status_code, 200)
        # View should have the child inlines section
        self.assertContains(
            response,
            '<div class="js-inline-admin-formset inline-group" id="chapter_set-group"'
        )

    def test_callable_lookup(self):
        """Admin inline should invoke local callable when its name is listed in readonly_fields"""
        response = self.client.get(reverse('admin:admin_inlines_poll_add'))
        self.assertEqual(response.status_code, 200)
        # Add parent object view should have the child inlines section
        self.assertContains(
            response,
            '<div class="js-inline-admin-formset inline-group" id="question_set-group"'
        )
        # The right callable should be used for the inline readonly_fields
        # column cells
        self.assertContains(response, '<p>Callable in QuestionInline</p>')

    def test_help_text(self):
        """
        The inlines' model field help texts are displayed when using both the
        stacked and tabular layouts.
        """
        response = self.client.get(reverse('admin:admin_inlines_holder4_add'))
        self.assertContains(response, '<div class="help">Awesome stacked help text is awesome.</div>', 4)
        self.assertContains(
            response,
            '<img src="/static/admin/img/icon-unknown.svg" '
            'class="help help-tooltip" width="10" height="10" '
            'alt="(Awesome tabular help text is awesome.)" '
            'title="Awesome tabular help text is awesome.">',
            1
        )
        # ReadOnly fields
        response = self.client.get(reverse('admin:admin_inlines_capofamiglia_add'))
        self.assertContains(
            response,
            '<img src="/static/admin/img/icon-unknown.svg" '
            'class="help help-tooltip" width="10" height="10" '
            'alt="(Help text for ReadOnlyInline)" '
            'title="Help text for ReadOnlyInline">',
            1
        )

    def test_tabular_model_form_meta_readonly_field(self):
        """
        Tabular inlines use ModelForm.Meta.help_texts and labels for read-only
        fields.
        """
        response = self.client.get(reverse('admin:admin_inlines_someparentmodel_add'))
        self.assertContains(
            response,
            '<img src="/static/admin/img/icon-unknown.svg" '
            'class="help help-tooltip" width="10" height="10" '
            'alt="(Help text from ModelForm.Meta)" '
            'title="Help text from ModelForm.Meta">'
        )
        self.assertContains(response, 'Label from ModelForm.Meta')

    def test_inline_hidden_field_no_column(self):
        """#18263 -- Make sure hidden fields don't get a column in tabular inlines"""
        parent = SomeParentModel.objects.create(name='a')
        SomeChildModel.objects.create(name='b', position='0', parent=parent)
        SomeChildModel.objects.create(name='c', position='1', parent=parent)
        response = self.client.get(reverse('admin:admin_inlines_someparentmodel_change', args=(parent.pk,)))
        self.assertNotContains(response, '<td class="field-position">')
        self.assertInHTML(
            '<input id="id_somechildmodel_set-1-position" '
            'name="somechildmodel_set-1-position" type="hidden" value="1">',
            response.rendered_content,
        )

    def test_non_related_name_inline(self):
        """
        Multiple inlines with related_name='+' have correct form prefixes.
        """
        response = self.client.get(reverse('admin:admin_inlines_capofamiglia_add'))
        self.assertContains(response, '<input type="hidden" name="-1-0-id" id="id_-1-0-id">', html=True)
        self.assertContains(
            response,
            '<input type="hidden" name="-1-0-capo_famiglia" id="id_-1-0-capo_famiglia">',
            html=True
        )
        self.assertContains(
            response,
            '<input id="id_-1-0-name" type="text" class="vTextField" name="-1-0-name" maxlength="100">',
            html=True
        )
        self.assertContains(response, '<input type="hidden" name="-2-0-id" id="id_-2-0-id">', html=True)
        self.assertContains(
            response,
            '<input type="hidden" name="-2-0-capo_famiglia" id="id_-2-0-capo_famiglia">',
            html=True
        )
        self.assertContains(
            response,
            '<input id="id_-2-0-name" type="text" class="vTextField" name="-2-0-name" maxlength="100">',
            html=True
        )

    @override_settings(USE_L10N=True, USE_THOUSAND_SEPARATOR=True)
    def test_localize_pk_shortcut(self):
        """
        The "View on Site" link is correct for locales that use thousand
        separators.
        """
        holder = Holder.objects.create(pk=123456789, dummy=42)
        inner = Inner.objects.create(pk=987654321, holder=holder, dummy=42, readonly='')
        response = self.client.get(reverse('admin:admin_inlines_holder_change', args=(holder.id,)))
        inner_shortcut = 'r/%s/%s/' % (ContentType.objects.get_for_model(inner).pk, inner.pk)
        self.assertContains(response, inner_shortcut)

    def test_custom_pk_shortcut(self):
        """
        The "View on Site" link is correct for models with a custom primary key
        field.
        """
        parent = ParentModelWithCustomPk.objects.create(my_own_pk="foo", name="Foo")
        child1 = ChildModel1.objects.create(my_own_pk="bar", name="Bar", parent=parent)
        child2 = ChildModel2.objects.create(my_own_pk="baz", name="Baz", parent=parent)
        response = self.client.get(reverse('admin:admin_inlines_parentmodelwithcustompk_change', args=('foo',)))
        child1_shortcut = 'r/%s/%s/' % (ContentType.objects.get_for_model(child1).pk, child1.pk)
        child2_shortcut = 'r/%s/%s/' % (ContentType.objects.get_for_model(child2).pk, child2.pk)
        self.assertContains(response, child1_shortcut)
        self.assertContains(response, child2_shortcut)

    def test_create_inlines_on_inherited_model(self):
        """
        An object can be created with inlines when it inherits another class.
        """
        data = {
            'name': 'Martian',
            'sighting_set-TOTAL_FORMS': 1,
            'sighting_set-INITIAL_FORMS': 0,
            'sighting_set-MAX_NUM_FORMS': 0,
            'sighting_set-0-place': 'Zone 51',
            '_save': 'Save',
        }
        response = self.client.post(reverse('admin:admin_inlines_extraterrestrial_add'), data)
        self.assertEqual(response.status_code, 302)
        self.assertEqual(Sighting.objects.filter(et__name='Martian').count(), 1)

    def test_custom_get_extra_form(self):
        bt_head = BinaryTree.objects.create(name="Tree Head")
        BinaryTree.objects.create(name="First Child", parent=bt_head)
        # The maximum number of forms should respect 'get_max_num' on the
        # ModelAdmin
        max_forms_input = (
            '<input id="id_binarytree_set-MAX_NUM_FORMS" '
            'name="binarytree_set-MAX_NUM_FORMS" type="hidden" value="%d">'
        )
        # The total number of forms will remain the same in either case
        total_forms_hidden = (
            '<input id="id_binarytree_set-TOTAL_FORMS" '
            'name="binarytree_set-TOTAL_FORMS" type="hidden" value="2">'
        )
        response = self.client.get(reverse('admin:admin_inlines_binarytree_add'))
        self.assertInHTML(max_forms_input % 3, response.rendered_content)
        self.assertInHTML(total_forms_hidden, response.rendered_content)

        response = self.client.get(reverse('admin:admin_inlines_binarytree_change', args=(bt_head.id,)))
        self.assertInHTML(max_forms_input % 2, response.rendered_content)
        self.assertInHTML(total_forms_hidden, response.rendered_content)

    def test_min_num(self):
        """
        min_num and extra determine number of forms.
        """
        class MinNumInline(TabularInline):
            model = BinaryTree
            min_num = 2
            extra = 3

        modeladmin = ModelAdmin(BinaryTree, admin_site)
        modeladmin.inlines = [MinNumInline]
        min_forms = (
            '<input id="id_binarytree_set-MIN_NUM_FORMS" '
            'name="binarytree_set-MIN_NUM_FORMS" type="hidden" value="2">'
        )
        total_forms = (
            '<input id="id_binarytree_set-TOTAL_FORMS" '
            'name="binarytree_set-TOTAL_FORMS" type="hidden" value="5">'
        )
        request = self.factory.get(reverse('admin:admin_inlines_binarytree_add'))
        request.user = User(username='super', is_superuser=True)
        response = modeladmin.changeform_view(request)
        self.assertInHTML(min_forms, response.rendered_content)
        self.assertInHTML(total_forms, response.rendered_content)

    def test_custom_min_num(self):
        bt_head = BinaryTree.objects.create(name="Tree Head")
        BinaryTree.objects.create(name="First Child", parent=bt_head)

        class MinNumInline(TabularInline):
            model = BinaryTree
            extra = 3

            def get_min_num(self, request, obj=None, **kwargs):
                if obj:
                    return 5
                return 2

        modeladmin = ModelAdmin(BinaryTree, admin_site)
        modeladmin.inlines = [MinNumInline]
        min_forms = (
            '<input id="id_binarytree_set-MIN_NUM_FORMS" '
            'name="binarytree_set-MIN_NUM_FORMS" type="hidden" value="%d">'
        )
        total_forms = (
            '<input id="id_binarytree_set-TOTAL_FORMS" '
            'name="binarytree_set-TOTAL_FORMS" type="hidden" value="%d">'
        )
        request = self.factory.get(reverse('admin:admin_inlines_binarytree_add'))
        request.user = User(username='super', is_superuser=True)
        response = modeladmin.changeform_view(request)
        self.assertInHTML(min_forms % 2, response.rendered_content)
        self.assertInHTML(total_forms % 5, response.rendered_content)

        request = self.factory.get(reverse('admin:admin_inlines_binarytree_change', args=(bt_head.id,)))
        request.user = User(username='super', is_superuser=True)
        response = modeladmin.changeform_view(request, object_id=str(bt_head.id))
        self.assertInHTML(min_forms % 5, response.rendered_content)
        self.assertInHTML(total_forms % 8, response.rendered_content)

    def test_inline_nonauto_noneditable_pk(self):
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        self.assertContains(
            response,
            '<input id="id_nonautopkbook_set-0-rand_pk" '
            'name="nonautopkbook_set-0-rand_pk" type="hidden">',
            html=True
        )
        self.assertContains(
            response,
            '<input id="id_nonautopkbook_set-2-0-rand_pk" '
            'name="nonautopkbook_set-2-0-rand_pk" type="hidden">',
            html=True
        )

    def test_inline_nonauto_noneditable_inherited_pk(self):
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        self.assertContains(
            response,
            '<input id="id_nonautopkbookchild_set-0-nonautopkbook_ptr" '
            'name="nonautopkbookchild_set-0-nonautopkbook_ptr" type="hidden">',
            html=True
        )
        self.assertContains(
            response,
            '<input id="id_nonautopkbookchild_set-2-nonautopkbook_ptr" '
            'name="nonautopkbookchild_set-2-nonautopkbook_ptr" type="hidden">',
            html=True
        )

    def test_inline_editable_pk(self):
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        self.assertContains(
            response,
            '<input class="vIntegerField" id="id_editablepkbook_set-0-manual_pk" '
            'name="editablepkbook_set-0-manual_pk" type="number">',
            html=True, count=1
        )
        self.assertContains(
            response,
            '<input class="vIntegerField" id="id_editablepkbook_set-2-0-manual_pk" '
            'name="editablepkbook_set-2-0-manual_pk" type="number">',
            html=True, count=1
        )

    def test_stacked_inline_edit_form_contains_has_original_class(self):
        holder = Holder.objects.create(dummy=1)
        holder.inner_set.create(dummy=1)
        response = self.client.get(reverse('admin:admin_inlines_holder_change', args=(holder.pk,)))
        self.assertContains(
            response,
            '<div class="inline-related has_original" id="inner_set-0">',
            count=1
        )
        self.assertContains(
            response,
            '<div class="inline-related" id="inner_set-1">',
            count=1
        )

    def test_inlines_show_change_link_registered(self):
        "Inlines `show_change_link` for registered models when enabled."
        holder = Holder4.objects.create(dummy=1)
        item1 = Inner4Stacked.objects.create(dummy=1, holder=holder)
        item2 = Inner4Tabular.objects.create(dummy=1, holder=holder)
        items = (
            ('inner4stacked', item1.pk),
            ('inner4tabular', item2.pk),
        )
        response = self.client.get(reverse('admin:admin_inlines_holder4_change', args=(holder.pk,)))
        self.assertTrue(response.context['inline_admin_formset'].opts.has_registered_model)
        for model, pk in items:
            url = reverse('admin:admin_inlines_%s_change' % model, args=(pk,))
            self.assertContains(response, '<a href="%s" %s' % (url, INLINE_CHANGELINK_HTML))

    def test_inlines_show_change_link_unregistered(self):
        "Inlines `show_change_link` disabled for unregistered models."
        parent = ParentModelWithCustomPk.objects.create(my_own_pk="foo", name="Foo")
        ChildModel1.objects.create(my_own_pk="bar", name="Bar", parent=parent)
        ChildModel2.objects.create(my_own_pk="baz", name="Baz", parent=parent)
        response = self.client.get(reverse('admin:admin_inlines_parentmodelwithcustompk_change', args=('foo',)))
        self.assertFalse(response.context['inline_admin_formset'].opts.has_registered_model)
        self.assertNotContains(response, INLINE_CHANGELINK_HTML)

    def test_tabular_inline_show_change_link_false_registered(self):
        "Inlines `show_change_link` disabled by default."
        poll = Poll.objects.create(name="New poll")
        Question.objects.create(poll=poll)
        response = self.client.get(reverse('admin:admin_inlines_poll_change', args=(poll.pk,)))
        self.assertTrue(response.context['inline_admin_formset'].opts.has_registered_model)
        self.assertNotContains(response, INLINE_CHANGELINK_HTML)

    def test_noneditable_inline_has_field_inputs(self):
        """Inlines without change permission shows field inputs on add form."""
        response = self.client.get(reverse('admin:admin_inlines_novelreadonlychapter_add'))
        self.assertContains(
            response,
            '<input type="text" name="chapter_set-0-name" '
            'class="vTextField" maxlength="40" id="id_chapter_set-0-name">',
            html=True
        )


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlineMedia(TestDataMixin, TestCase):

    def setUp(self):
        self.client.force_login(self.superuser)

    def test_inline_media_only_base(self):
        holder = Holder(dummy=13)
        holder.save()
        Inner(dummy=42, holder=holder).save()
        change_url = reverse('admin:admin_inlines_holder_change', args=(holder.id,))
        response = self.client.get(change_url)
        self.assertContains(response, 'my_awesome_admin_scripts.js')

    def test_inline_media_only_inline(self):
        holder = Holder3(dummy=13)
        holder.save()
        Inner3(dummy=42, holder=holder).save()
        change_url = reverse('admin:admin_inlines_holder3_change', args=(holder.id,))
        response = self.client.get(change_url)
        self.assertEqual(
            response.context['inline_admin_formsets'][0].media._js,
            [
                'admin/js/vendor/jquery/jquery.min.js',
                'my_awesome_inline_scripts.js',
                'custom_number.js',
                'admin/js/jquery.init.js',
                'admin/js/inlines.min.js',
            ]
        )
        self.assertContains(response, 'my_awesome_inline_scripts.js')

    def test_all_inline_media(self):
        holder = Holder2(dummy=13)
        holder.save()
        Inner2(dummy=42, holder=holder).save()
        change_url = reverse('admin:admin_inlines_holder2_change', args=(holder.id,))
        response = self.client.get(change_url)
        self.assertContains(response, 'my_awesome_admin_scripts.js')
        self.assertContains(response, 'my_awesome_inline_scripts.js')


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlineAdminForm(TestCase):

    def test_immutable_content_type(self):
        """Regression for #9362
        The problem depends only on InlineAdminForm and its "original"
        argument, so we can safely set the other arguments to None/{}. We just
        need to check that the content_type argument of Child isn't altered by
        the internals of the inline form."""

        sally = Teacher.objects.create(name='Sally')
        john = Parent.objects.create(name='John')
        joe = Child.objects.create(name='Joe', teacher=sally, parent=john)

        iaf = InlineAdminForm(None, None, {}, {}, joe)
        parent_ct = ContentType.objects.get_for_model(Parent)
        self.assertEqual(iaf.original.content_type, parent_ct)


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlineProtectedOnDelete(TestDataMixin, TestCase):

    def setUp(self):
        self.client.force_login(self.superuser)

    def test_deleting_inline_with_protected_delete_does_not_validate(self):
        lotr = Novel.objects.create(name='Lord of the rings')
        chapter = Chapter.objects.create(novel=lotr, name='Many Meetings')
        foot_note = FootNote.objects.create(chapter=chapter, note='yadda yadda')

        change_url = reverse('admin:admin_inlines_novel_change', args=(lotr.id,))
        response = self.client.get(change_url)
        data = {
            'name': lotr.name,
            'chapter_set-TOTAL_FORMS': 1,
            'chapter_set-INITIAL_FORMS': 1,
            'chapter_set-MAX_NUM_FORMS': 1000,
            '_save': 'Save',
            'chapter_set-0-id': chapter.id,
            'chapter_set-0-name': chapter.name,
            'chapter_set-0-novel': lotr.id,
            'chapter_set-0-DELETE': 'on'
        }
        response = self.client.post(change_url, data)
        self.assertContains(response, "Deleting chapter %s would require deleting "
                            "the following protected related objects: foot note %s"
                            % (chapter, foot_note))


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestInlinePermissions(TestCase):
    """
    Make sure the admin respects permissions for objects that are edited
    inline. Refs #8060.
    """

    @classmethod
    def setUpTestData(cls):
        cls.user = User(username='admin', is_staff=True, is_active=True)
        cls.user.set_password('secret')
        cls.user.save()

        cls.author_ct = ContentType.objects.get_for_model(Author)
        cls.holder_ct = ContentType.objects.get_for_model(Holder2)
        cls.book_ct = ContentType.objects.get_for_model(Book)
        cls.inner_ct = ContentType.objects.get_for_model(Inner2)

        # User always has permissions to add and change Authors, and Holders,
        # the main (parent) models of the inlines. Permissions on the inlines
        # vary per test.
        permission = Permission.objects.get(codename='add_author', content_type=cls.author_ct)
        cls.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='change_author', content_type=cls.author_ct)
        cls.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='add_holder2', content_type=cls.holder_ct)
        cls.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='change_holder2', content_type=cls.holder_ct)
        cls.user.user_permissions.add(permission)

        author = Author.objects.create(pk=1, name='The Author')
        cls.book = author.books.create(name='The inline Book')
        cls.author_change_url = reverse('admin:admin_inlines_author_change', args=(author.id,))
        # Get the ID of the automatically created intermediate model for the Author-Book m2m
        author_book_auto_m2m_intermediate = Author.books.through.objects.get(author=author, book=cls.book)
        cls.author_book_auto_m2m_intermediate_id = author_book_auto_m2m_intermediate.pk

        cls.holder = Holder2.objects.create(dummy=13)
        cls.inner2 = Inner2.objects.create(dummy=42, holder=cls.holder)

    def setUp(self):
        self.holder_change_url = reverse('admin:admin_inlines_holder2_change', args=(self.holder.id,))
        self.client.force_login(self.user)

    def test_inline_add_m2m_noperm(self):
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        # No change permission on books, so no inline
        self.assertNotContains(response, '<h2>Author-book relationships</h2>')
        self.assertNotContains(response, 'Add another Author-Book Relationship')
        self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')

    def test_inline_add_fk_noperm(self):
        response = self.client.get(reverse('admin:admin_inlines_holder2_add'))
        # No permissions on Inner2s, so no inline
        self.assertNotContains(response, '<h2>Inner2s</h2>')
        self.assertNotContains(response, 'Add another Inner2')
        self.assertNotContains(response, 'id="id_inner2_set-TOTAL_FORMS"')

    def test_inline_change_m2m_noperm(self):
        response = self.client.get(self.author_change_url)
        # No change permission on books, so no inline
        self.assertNotContains(response, '<h2>Author-book relationships</h2>')
        self.assertNotContains(response, 'Add another Author-Book Relationship')
        self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')

    def test_inline_change_fk_noperm(self):
        response = self.client.get(self.holder_change_url)
        # No permissions on Inner2s, so no inline
        self.assertNotContains(response, '<h2>Inner2s</h2>')
        self.assertNotContains(response, 'Add another Inner2')
        self.assertNotContains(response, 'id="id_inner2_set-TOTAL_FORMS"')

    def test_inline_add_m2m_view_only_perm(self):
        permission = Permission.objects.get(codename='view_book', content_type=self.book_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        # View-only inlines. (It could be nicer to hide the empty, non-editable
        # inlines on the add page.)
        self.assertIs(response.context['inline_admin_formset'].has_view_permission, True)
        self.assertIs(response.context['inline_admin_formset'].has_add_permission, False)
        self.assertIs(response.context['inline_admin_formset'].has_change_permission, False)
        self.assertIs(response.context['inline_admin_formset'].has_delete_permission, False)
        self.assertContains(response, '<h2>Author-book relationships</h2>')
        self.assertContains(
            response,
            '<input type="hidden" name="Author_books-TOTAL_FORMS" value="0" '
            'id="id_Author_books-TOTAL_FORMS">',
            html=True,
        )
        self.assertNotContains(response, 'Add another Author-Book Relationship')

    def test_inline_add_m2m_add_perm(self):
        permission = Permission.objects.get(codename='add_book', content_type=self.book_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(reverse('admin:admin_inlines_author_add'))
        # No change permission on Books, so no inline
        self.assertNotContains(response, '<h2>Author-book relationships</h2>')
        self.assertNotContains(response, 'Add another Author-Book Relationship')
        self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')

    def test_inline_add_fk_add_perm(self):
        permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(reverse('admin:admin_inlines_holder2_add'))
        # Add permission on inner2s, so we get the inline
        self.assertContains(response, '<h2>Inner2s</h2>')
        self.assertContains(response, 'Add another Inner2')
        self.assertContains(response, '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" '
                            'value="3" name="inner2_set-TOTAL_FORMS">', html=True)

    def test_inline_change_m2m_add_perm(self):
        permission = Permission.objects.get(codename='add_book', content_type=self.book_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.author_change_url)
        # No change permission on books, so no inline
        self.assertNotContains(response, '<h2>Author-book relationships</h2>')
        self.assertNotContains(response, 'Add another Author-Book Relationship')
        self.assertNotContains(response, 'id="id_Author_books-TOTAL_FORMS"')
        self.assertNotContains(response, 'id="id_Author_books-0-DELETE"')

    def test_inline_change_m2m_view_only_perm(self):
        permission = Permission.objects.get(codename='view_book', content_type=self.book_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.author_change_url)
        # View-only inlines.
        self.assertIs(response.context['inline_admin_formset'].has_view_permission, True)
        self.assertIs(response.context['inline_admin_formset'].has_add_permission, False)
        self.assertIs(response.context['inline_admin_formset'].has_change_permission, False)
        self.assertIs(response.context['inline_admin_formset'].has_delete_permission, False)
        self.assertContains(response, '<h2>Author-book relationships</h2>')
        self.assertContains(
            response,
            '<input type="hidden" name="Author_books-TOTAL_FORMS" value="1" '
            'id="id_Author_books-TOTAL_FORMS">',
            html=True,
        )
        # The field in the inline is read-only.
        self.assertContains(response, '<p>%s</p>' % self.book)
        self.assertNotContains(
            response,
            '<input type="checkbox" name="Author_books-0-DELETE" id="id_Author_books-0-DELETE">',
            html=True,
        )

    def test_inline_change_m2m_change_perm(self):
        permission = Permission.objects.get(codename='change_book', content_type=self.book_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.author_change_url)
        # We have change perm on books, so we can add/change/delete inlines
        self.assertIs(response.context['inline_admin_formset'].has_view_permission, True)
        self.assertIs(response.context['inline_admin_formset'].has_add_permission, True)
        self.assertIs(response.context['inline_admin_formset'].has_change_permission, True)
        self.assertIs(response.context['inline_admin_formset'].has_delete_permission, True)
        self.assertContains(response, '<h2>Author-book relationships</h2>')
        self.assertContains(response, 'Add another Author-book relationship')
        self.assertContains(response, '<input type="hidden" id="id_Author_books-TOTAL_FORMS" '
                            'value="4" name="Author_books-TOTAL_FORMS">', html=True)
        self.assertContains(
            response,
            '<input type="hidden" id="id_Author_books-0-id" value="%i" '
            'name="Author_books-0-id">' % self.author_book_auto_m2m_intermediate_id,
            html=True
        )
        self.assertContains(response, 'id="id_Author_books-0-DELETE"')

    def test_inline_change_fk_add_perm(self):
        permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.holder_change_url)
        # Add permission on inner2s, so we can add but not modify existing
        self.assertContains(response, '<h2>Inner2s</h2>')
        self.assertContains(response, 'Add another Inner2')
        # 3 extra forms only, not the existing instance form
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="3" '
            'name="inner2_set-TOTAL_FORMS">',
            html=True
        )
        self.assertNotContains(
            response,
            '<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
            html=True
        )

    def test_inline_change_fk_change_perm(self):
        permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.holder_change_url)
        # Change permission on inner2s, so we can change existing but not add new
        self.assertContains(response, '<h2>Inner2s</h2>', count=2)
        # Just the one form for existing instances
        self.assertContains(
            response, '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="1" name="inner2_set-TOTAL_FORMS">',
            html=True
        )
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
            html=True
        )
        # max-num 0 means we can't add new ones
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-MAX_NUM_FORMS" value="0" name="inner2_set-MAX_NUM_FORMS">',
            html=True
        )
        # TabularInline
        self.assertContains(response, '<th class="column-dummy required">Dummy</th>', html=True)
        self.assertContains(
            response,
            '<input type="number" name="inner2_set-2-0-dummy" value="%s" '
            'class="vIntegerField" id="id_inner2_set-2-0-dummy">' % self.inner2.dummy,
            html=True,
        )

    def test_inline_change_fk_add_change_perm(self):
        permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.holder_change_url)
        # Add/change perm, so we can add new and change existing
        self.assertContains(response, '<h2>Inner2s</h2>')
        # One form for existing instance and three extra for new
        self.assertContains(
            response, '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="4" name="inner2_set-TOTAL_FORMS">',
            html=True
        )
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
            html=True
        )

    def test_inline_change_fk_change_del_perm(self):
        permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='delete_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.holder_change_url)
        # Change/delete perm on inner2s, so we can change/delete existing
        self.assertContains(response, '<h2>Inner2s</h2>')
        # One form for existing instance only, no new
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="1" name="inner2_set-TOTAL_FORMS">',
            html=True
        )
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
            html=True
        )
        self.assertContains(response, 'id="id_inner2_set-0-DELETE"')

    def test_inline_change_fk_all_perms(self):
        permission = Permission.objects.get(codename='add_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='change_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        permission = Permission.objects.get(codename='delete_inner2', content_type=self.inner_ct)
        self.user.user_permissions.add(permission)
        response = self.client.get(self.holder_change_url)
        # All perms on inner2s, so we can add/change/delete
        self.assertContains(response, '<h2>Inner2s</h2>', count=2)
        # One form for existing instance only, three for new
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-TOTAL_FORMS" value="4" name="inner2_set-TOTAL_FORMS">',
            html=True
        )
        self.assertContains(
            response,
            '<input type="hidden" id="id_inner2_set-0-id" value="%i" name="inner2_set-0-id">' % self.inner2.id,
            html=True
        )
        self.assertContains(response, 'id="id_inner2_set-0-DELETE"')
        # TabularInline
        self.assertContains(response, '<th class="column-dummy required">Dummy</th>', html=True)
        self.assertContains(
            response,
            '<input type="number" name="inner2_set-2-0-dummy" value="%s" '
            'class="vIntegerField" id="id_inner2_set-2-0-dummy">' % self.inner2.dummy,
            html=True,
        )


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class TestReadOnlyChangeViewInlinePermissions(TestCase):

    @classmethod
    def setUpTestData(cls):
        cls.user = User.objects.create_user('testing', password='password', is_staff=True)
        cls.user.user_permissions.add(
            Permission.objects.get(codename='view_poll', content_type=ContentType.objects.get_for_model(Poll))
        )
        cls.user.user_permissions.add(
            *Permission.objects.filter(
                codename__endswith="question", content_type=ContentType.objects.get_for_model(Question)
            ).values_list('pk', flat=True)
        )

        cls.poll = Poll.objects.create(name="Survey")
        cls.add_url = reverse('admin:admin_inlines_poll_add')
        cls.change_url = reverse('admin:admin_inlines_poll_change', args=(cls.poll.id,))

    def setUp(self):
        self.client.force_login(self.user)

    def test_add_url_not_allowed(self):
        response = self.client.get(self.add_url)
        self.assertEqual(response.status_code, 403)

        response = self.client.post(self.add_url, {})
        self.assertEqual(response.status_code, 403)

    def test_post_to_change_url_not_allowed(self):
        response = self.client.post(self.change_url, {})
        self.assertEqual(response.status_code, 403)

    def test_get_to_change_url_is_allowed(self):
        response = self.client.get(self.change_url)
        self.assertEqual(response.status_code, 200)

    def test_main_model_is_rendered_as_read_only(self):
        response = self.client.get(self.change_url)
        self.assertContains(
            response,
            '<div class="readonly">%s</div>' % self.poll.name,
            html=True
        )
        input = '<input type="text" name="name" value="%s" class="vTextField" maxlength="40" required id="id_name">'
        self.assertNotContains(
            response,
            input % self.poll.name,
            html=True
        )

    def test_inlines_are_rendered_as_read_only(self):
        question = Question.objects.create(text="How will this be rendered?", poll=self.poll)
        response = self.client.get(self.change_url)
        self.assertContains(
            response,
            '<td class="field-text"><p>%s</p></td>' % question.text,
            html=True
        )
        self.assertNotContains(response, 'id="id_question_set-0-text"')
        self.assertNotContains(response, 'id="id_related_objs-0-DELETE"')

    def test_submit_line_shows_only_close_button(self):
        response = self.client.get(self.change_url)
        self.assertContains(
            response,
            '<a href="/admin/admin_inlines/poll/" class="closelink">Close</a>',
            html=True
        )
        delete_link = '<p class="deletelink-box"><a href="/admin/admin_inlines/poll/%s/delete/" class="deletelink">Delete</a></p>'  # noqa
        self.assertNotContains(
            response,
            delete_link % self.poll.id,
            html=True
        )
        self.assertNotContains(response, '<input type="submit" value="Save and add another" name="_addanother">')
        self.assertNotContains(response, '<input type="submit" value="Save and continue editing" name="_continue">')

    def test_inline_delete_buttons_are_not_shown(self):
        Question.objects.create(text="How will this be rendered?", poll=self.poll)
        response = self.client.get(self.change_url)
        self.assertNotContains(
            response,
            '<input type="checkbox" name="question_set-0-DELETE" id="id_question_set-0-DELETE">',
            html=True
        )

    def test_extra_inlines_are_not_shown(self):
        response = self.client.get(self.change_url)
        self.assertNotContains(response, 'id="id_question_set-0-text"')


@override_settings(ROOT_URLCONF='admin_inlines.urls')
class SeleniumTests(AdminSeleniumTestCase):

    available_apps = ['admin_inlines'] + AdminSeleniumTestCase.available_apps

    def setUp(self):
        User.objects.create_superuser(username='super', password='secret', email='super@example.com')

    def test_add_stackeds(self):
        """
        The "Add another XXX" link correctly adds items to the stacked formset.
        """
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder4_add'))

        inline_id = '#inner4stacked_set-group'

        def rows_length():
            return len(self.selenium.find_elements_by_css_selector('%s .dynamic-inner4stacked_set' % inline_id))
        self.assertEqual(rows_length(), 3)

        add_button = self.selenium.find_element_by_link_text(
            'Add another Inner4 stacked')
        add_button.click()

        self.assertEqual(rows_length(), 4)

    def test_delete_stackeds(self):
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_holder4_add'))

        inline_id = '#inner4stacked_set-group'

        def rows_length():
            return len(self.selenium.find_elements_by_css_selector('%s .dynamic-inner4stacked_set' % inline_id))
        self.assertEqual(rows_length(), 3)

        add_button = self.selenium.find_element_by_link_text(
            'Add another Inner4 stacked')
        add_button.click()
        add_button.click()

        self.assertEqual(rows_length(), 5, msg="sanity check")
        for delete_link in self.selenium.find_elements_by_css_selector('%s .inline-deletelink' % inline_id):
            delete_link.click()
        self.assertEqual(rows_length(), 3)

    def test_add_inlines(self):
        """
        The "Add another XXX" link correctly adds items to the inline form.
        """
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_profilecollection_add'))

        # There's only one inline to start with and it has the correct ID.
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set')), 1)
        self.assertEqual(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set')[0].get_attribute('id'),
            'profile_set-0')
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set#profile_set-0 input[name=profile_set-0-first_name]')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set#profile_set-0 input[name=profile_set-0-last_name]')), 1)

        # Add an inline
        self.selenium.find_element_by_link_text('Add another Profile').click()

        # The inline has been added, it has the right id, and it contains the
        # correct fields.
        self.assertEqual(len(self.selenium.find_elements_by_css_selector('.dynamic-profile_set')), 2)
        self.assertEqual(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set')[1].get_attribute('id'), 'profile_set-1')
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set#profile_set-1 input[name=profile_set-1-first_name]')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set#profile_set-1 input[name=profile_set-1-last_name]')), 1)

        # Let's add another one to be sure
        self.selenium.find_element_by_link_text('Add another Profile').click()
        self.assertEqual(len(self.selenium.find_elements_by_css_selector('.dynamic-profile_set')), 3)
        self.assertEqual(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set')[2].get_attribute('id'), 'profile_set-2')
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set#profile_set-2 input[name=profile_set-2-first_name]')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '.dynamic-profile_set#profile_set-2 input[name=profile_set-2-last_name]')), 1)

        # Enter some data and click 'Save'
        self.selenium.find_element_by_name('profile_set-0-first_name').send_keys('0 first name 1')
        self.selenium.find_element_by_name('profile_set-0-last_name').send_keys('0 last name 2')
        self.selenium.find_element_by_name('profile_set-1-first_name').send_keys('1 first name 1')
        self.selenium.find_element_by_name('profile_set-1-last_name').send_keys('1 last name 2')
        self.selenium.find_element_by_name('profile_set-2-first_name').send_keys('2 first name 1')
        self.selenium.find_element_by_name('profile_set-2-last_name').send_keys('2 last name 2')

        self.selenium.find_element_by_xpath('//input[@value="Save"]').click()
        self.wait_page_loaded()

        # The objects have been created in the database
        self.assertEqual(ProfileCollection.objects.all().count(), 1)
        self.assertEqual(Profile.objects.all().count(), 3)

    def test_add_inline_link_absent_for_view_only_parent_model(self):
        user = User.objects.create_user('testing', password='password', is_staff=True)
        user.user_permissions.add(
            Permission.objects.get(codename='view_poll', content_type=ContentType.objects.get_for_model(Poll))
        )
        user.user_permissions.add(
            *Permission.objects.filter(
                codename__endswith="question", content_type=ContentType.objects.get_for_model(Question)
            ).values_list('pk', flat=True)
        )
        self.admin_login(username='testing', password='password')
        poll = Poll.objects.create(name="Survey")
        change_url = reverse('admin:admin_inlines_poll_change', args=(poll.id,))
        self.selenium.get(self.live_server_url + change_url)
        with self.disable_implicit_wait():
            with self.assertRaises(NoSuchElementException):
                self.selenium.find_element_by_link_text('Add another Question')

    def test_delete_inlines(self):
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_profilecollection_add'))

        # Add a few inlines
        self.selenium.find_element_by_link_text('Add another Profile').click()
        self.selenium.find_element_by_link_text('Add another Profile').click()
        self.selenium.find_element_by_link_text('Add another Profile').click()
        self.selenium.find_element_by_link_text('Add another Profile').click()
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '#profile_set-group table tr.dynamic-profile_set')), 5)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-0')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-1')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-2')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-3')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-4')), 1)

        # Click on a few delete buttons
        self.selenium.find_element_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-1 td.delete a').click()
        self.selenium.find_element_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-2 td.delete a').click()
        # The rows are gone and the IDs have been re-sequenced
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            '#profile_set-group table tr.dynamic-profile_set')), 3)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-0')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-1')), 1)
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            'form#profilecollection_form tr.dynamic-profile_set#profile_set-2')), 1)

    def test_alternating_rows(self):
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_profilecollection_add'))

        # Add a few inlines
        self.selenium.find_element_by_link_text('Add another Profile').click()
        self.selenium.find_element_by_link_text('Add another Profile').click()

        row_selector = 'form#profilecollection_form tr.dynamic-profile_set'
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            "%s.row1" % row_selector)), 2, msg="Expect two row1 styled rows")
        self.assertEqual(len(self.selenium.find_elements_by_css_selector(
            "%s.row2" % row_selector)), 1, msg="Expect one row2 styled row")

    def test_collapsed_inlines(self):
        # Collapsed inlines have SHOW/HIDE links.
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_author_add'))
        # One field is in a stacked inline, other in a tabular one.
        test_fields = ['#id_nonautopkbook_set-0-title', '#id_nonautopkbook_set-2-0-title']
        show_links = self.selenium.find_elements_by_link_text('SHOW')
        self.assertEqual(len(show_links), 3)
        for show_index, field_name in enumerate(test_fields, 0):
            self.wait_until_invisible(field_name)
            show_links[show_index].click()
            self.wait_until_visible(field_name)
        hide_links = self.selenium.find_elements_by_link_text('HIDE')
        self.assertEqual(len(hide_links), 2)
        for hide_index, field_name in enumerate(test_fields, 0):
            self.wait_until_visible(field_name)
            hide_links[hide_index].click()
            self.wait_until_invisible(field_name)

    def test_added_stacked_inline_with_collapsed_fields(self):
        self.admin_login(username='super', password='secret')
        self.selenium.get(self.live_server_url + reverse('admin:admin_inlines_teacher_add'))
        self.selenium.find_element_by_link_text('Add another Child').click()
        test_fields = ['#id_child_set-0-name', '#id_child_set-1-name']
        show_links = self.selenium.find_elements_by_link_text('SHOW')
        self.assertEqual(len(show_links), 2)
        for show_index, field_name in enumerate(test_fields, 0):
            self.wait_until_invisible(field_name)
            show_links[show_index].click()
            self.wait_until_visible(field_name)
        hide_links = self.selenium.find_elements_by_link_text('HIDE')
        self.assertEqual(len(hide_links), 2)
        for hide_index, field_name in enumerate(test_fields, 0):
            self.wait_until_visible(field_name)
            hide_links[hide_index].click()
            self.wait_until_invisible(field_name)