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

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)

        cls.parent = SomeParentModel.objects.create(name="a")
        SomeChildModel.objects.create(name="b", position="0", parent=cls.parent)
        SomeChildModel.objects.create(name="c", position="1", parent=cls.parent)

        cls.view_only_user = User.objects.create_user(
            username="user",
            password="pwd",
            is_staff=True,
        )
        parent_ct = ContentType.objects.get_for_model(SomeParentModel)
        child_ct = ContentType.objects.get_for_model(SomeChildModel)
        permission = Permission.objects.get(
            codename="view_someparentmodel",
            content_type=parent_ct,
        )
        cls.view_only_user.user_permissions.add(permission)
        permission = Permission.objects.get(
            codename="view_somechildmodel",
            content_type=child_ct,
        )
        cls.view_only_user.user_permissions.add(permission)

    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 class="row-form-errors"><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"))
        # 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"))
        # 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_model_error_inline_with_readonly_field(self):
        poll = Poll.objects.create(name="Test poll")
        data = {
            "question_set-TOTAL_FORMS": 1,
            "question_set-INITIAL_FORMS": 0,
            "question_set-MAX_NUM_FORMS": 0,
            "_save": "Save",
            "question_set-0-text": "Question",
            "question_set-0-poll": poll.pk,
        }
        response = self.client.post(
            reverse("admin:admin_inlines_poll_change", args=(poll.pk,)),
            data,
        )
        self.assertContains(response, "Always invalid model.")

    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, "Awesome stacked help text is awesome.", 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_tabular_inline_hidden_field_with_view_only_permissions(self):
        """
        Content of hidden field is not visible in tabular inline when user has
        view-only permission.
        """
        self.client.force_login(self.view_only_user)
        url = reverse(
            "tabular_inline_hidden_field_admin:admin_inlines_someparentmodel_change",
            args=(self.parent.pk,),
        )
        response = self.client.get(url)
        self.assertInHTML(
            '<th class="column-position hidden">Position</th>',
            response.rendered_content,
        )
        self.assertInHTML(
            '<td class="field-position hidden"><p>0</p></td>', response.rendered_content
        )
        self.assertInHTML(
            '<td class="field-position hidden"><p>1</p></td>', response.rendered_content
        )

    def test_stacked_inline_hidden_field_with_view_only_permissions(self):
        """
        Content of hidden field is not visible in stacked inline when user has
        view-only permission.
        """
        self.client.force_login(self.view_only_user)
        url = reverse(
            "stacked_inline_hidden_field_in_group_admin:"
            "admin_inlines_someparentmodel_change",
            args=(self.parent.pk,),
        )
        response = self.client.get(url)
        # The whole line containing name + position fields is not hidden.
        self.assertContains(
            response, '<div class="form-row field-name field-position">'
        )
        # The div containing the position field is hidden.
        self.assertInHTML(
            '<div class="fieldBox field-position hidden">'
            '<label class="inline">Position:</label>'
            '<div class="readonly">0</div></div>',
            response.rendered_content,
        )
        self.assertInHTML(
            '<div class="fieldBox field-position hidden">'
            '<label class="inline">Position:</label>'
            '<div class="readonly">1</div></div>',
            response.rendered_content,
        )

    def test_stacked_inline_single_hidden_field_in_line_with_view_only_permissions(
        self,
    ):
        """
        Content of hidden field is not visible in stacked inline when user has
        view-only permission and the field is grouped on a separate line.
        """
        self.client.force_login(self.view_only_user)
        url = reverse(
            "stacked_inline_hidden_field_on_single_line_admin:"
            "admin_inlines_someparentmodel_change",
            args=(self.parent.pk,),
        )
        response = self.client.get(url)
        # The whole line containing position field is hidden.
        self.assertInHTML(
            '<div class="form-row hidden field-position">'
            "<div><label>Position:</label>"
            '<div class="readonly">0</div></div></div>',
            response.rendered_content,
        )
        self.assertInHTML(
            '<div class="form-row hidden field-position">'
            "<div><label>Position:</label>"
            '<div class="readonly">1</div></div></div>',
            response.rendered_content,
        )

    def test_tabular_inline_with_hidden_field_non_field_errors_has_correct_colspan(
        self,
    ):
        """
        In tabular inlines, when a form has non-field errors, those errors
        are rendered in a table line with a single cell spanning the whole
        table width. Colspan must be equal to the number of visible columns.
        """
        parent = SomeParentModel.objects.create(name="a")
        child = SomeChildModel.objects.create(name="b", position="0", parent=parent)
        url = reverse(
            "tabular_inline_hidden_field_admin:admin_inlines_someparentmodel_change",
            args=(parent.id,),
        )
        data = {
            "name": parent.name,
            "somechildmodel_set-TOTAL_FORMS": 1,
            "somechildmodel_set-INITIAL_FORMS": 1,
            "somechildmodel_set-MIN_NUM_FORMS": 0,
            "somechildmodel_set-MAX_NUM_FORMS": 1000,
            "_save": "Save",
            "somechildmodel_set-0-id": child.id,
            "somechildmodel_set-0-parent": parent.id,
            "somechildmodel_set-0-name": child.name,
            "somechildmodel_set-0-position": 1,
        }
        response = self.client.post(url, data)
        # Form has 3 visible columns and 1 hidden column.
        self.assertInHTML(
            '<thead><tr><th class="original"></th>'
            '<th class="column-name required">Name</th>'
            '<th class="column-position required hidden">Position</th>'
            "<th>Delete?</th></tr></thead>",
            response.rendered_content,
        )
        # The non-field error must be spanned on 3 (visible) columns.
        self.assertInHTML(
            '<tr class="row-form-errors"><td colspan="3">'
            '<ul class="errorlist nonfield"><li>A non-field error</li></ul></td></tr>',
            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_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,
        )

    def test_inlines_plural_heading_foreign_key(self):
        response = self.client.get(reverse("admin:admin_inlines_holder4_add"))
        self.assertContains(response, "<h2>Inner4 stackeds</h2>", html=True)
        self.assertContains(response, "<h2>Inner4 tabulars</h2>", html=True)

    def test_inlines_singular_heading_one_to_one(self):
        response = self.client.get(reverse("admin:admin_inlines_person_add"))
        self.assertContains(response, "<h2>Author</h2>", html=True)  # Tabular.
        self.assertContains(response, "<h2>Fashionista</h2>", html=True)  # Stacked.

    def test_inlines_based_on_model_state(self):
        parent = ShowInlineParent.objects.create(show_inlines=False)
        data = {
            "show_inlines": "on",
            "_save": "Save",
        }
        change_url = reverse(
            "admin:admin_inlines_showinlineparent_change",
            args=(parent.id,),
        )
        response = self.client.post(change_url, data)
        self.assertEqual(response.status_code, 302)
        parent.refresh_from_db()
        self.assertIs(parent.show_inlines, 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.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 = (
            '<a href="/admin/admin_inlines/poll/%s/delete/" class="deletelink">Delete'
            "</a>"
        )
        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 TestVerboseNameInlineForms(TestDataMixin, TestCase):
    factory = RequestFactory()

    def test_verbose_name_inline(self):
        class NonVerboseProfileInline(TabularInline):
            model = Profile
            verbose_name = "Non-verbose childs"

        class VerboseNameProfileInline(TabularInline):
            model = VerboseNameProfile
            verbose_name = "Childs with verbose name"

        class VerboseNamePluralProfileInline(TabularInline):
            model = VerboseNamePluralProfile
            verbose_name = "Childs with verbose name plural"

        class BothVerboseNameProfileInline(TabularInline):
            model = BothVerboseNameProfile
            verbose_name = "Childs with both verbose names"

        modeladmin = ModelAdmin(ProfileCollection, admin_site)
        modeladmin.inlines = [
            NonVerboseProfileInline,
            VerboseNameProfileInline,
            VerboseNamePluralProfileInline,
            BothVerboseNameProfileInline,
        ]
        obj = ProfileCollection.objects.create()
        url = reverse("admin:admin_inlines_profilecollection_change", args=(obj.pk,))
        request = self.factory.get(url)
        request.user = self.superuser
        response = modeladmin.changeform_view(request)
        self.assertNotContains(response, "Add another Profile")
        # Non-verbose model.
        self.assertContains(response, "<h2>Non-verbose childss</h2>")
        self.assertContains(response, "Add another Non-verbose child")
        self.assertNotContains(response, "<h2>Profiles</h2>")
        # Model with verbose name.
        self.assertContains(response, "<h2>Childs with verbose names</h2>")
        self.assertContains(response, "Add another Childs with verbose name")
        self.assertNotContains(response, "<h2>Model with verbose name onlys</h2>")
        self.assertNotContains(response, "Add another Model with verbose name only")
        # Model with verbose name plural.
        self.assertContains(response, "<h2>Childs with verbose name plurals</h2>")
        self.assertContains(response, "Add another Childs with verbose name plural")
        self.assertNotContains(response, "<h2>Model with verbose name plural only</h2>")
        # Model with both verbose names.
        self.assertContains(response, "<h2>Childs with both verbose namess</h2>")
        self.assertContains(response, "Add another Childs with both verbose names")
        self.assertNotContains(response, "<h2>Model with both - plural name</h2>")
        self.assertNotContains(response, "Add another Model with both - name")

    def test_verbose_name_plural_inline(self):
        class NonVerboseProfileInline(TabularInline):
            model = Profile
            verbose_name_plural = "Non-verbose childs"

        class VerboseNameProfileInline(TabularInline):
            model = VerboseNameProfile
            verbose_name_plural = "Childs with verbose name"

        class VerboseNamePluralProfileInline(TabularInline):
            model = VerboseNamePluralProfile
            verbose_name_plural = "Childs with verbose name plural"

        class BothVerboseNameProfileInline(TabularInline):
            model = BothVerboseNameProfile
            verbose_name_plural = "Childs with both verbose names"

        modeladmin = ModelAdmin(ProfileCollection, admin_site)
        modeladmin.inlines = [
            NonVerboseProfileInline,
            VerboseNameProfileInline,
            VerboseNamePluralProfileInline,
            BothVerboseNameProfileInline,
        ]
        obj = ProfileCollection.objects.create()
        url = reverse("admin:admin_inlines_profilecollection_change", args=(obj.pk,))
        request = self.factory.get(url)
        request.user = self.superuser
        response = modeladmin.changeform_view(request)
        # Non-verbose model.
        self.assertContains(response, "<h2>Non-verbose childs</h2>")
        self.assertContains(response, "Add another Profile")
        self.assertNotContains(response, "<h2>Profiles</h2>")
        # Model with verbose name.
        self.assertContains(response, "<h2>Childs with verbose name</h2>")
        self.assertContains(response, "Add another Model with verbose name only")
        self.assertNotContains(response, "<h2>Model with verbose name onlys</h2>")
        # Model with verbose name plural.
        self.assertContains(response, "<h2>Childs with verbose name plural</h2>")
        self.assertContains(response, "Add another Profile")
        self.assertNotContains(response, "<h2>Model with verbose name plural only</h2>")
        # Model with both verbose names.
        self.assertContains(response, "<h2>Childs with both verbose names</h2>")
        self.assertContains(response, "Add another Model with both - name")
        self.assertNotContains(response, "<h2>Model with both - plural name</h2>")

    def test_both_verbose_names_inline(self):
        class NonVerboseProfileInline(TabularInline):
            model = Profile
            verbose_name = "Non-verbose childs - name"
            verbose_name_plural = "Non-verbose childs - plural name"

        class VerboseNameProfileInline(TabularInline):
            model = VerboseNameProfile
            verbose_name = "Childs with verbose name - name"
            verbose_name_plural = "Childs with verbose name - plural name"

        class VerboseNamePluralProfileInline(TabularInline):
            model = VerboseNamePluralProfile
            verbose_name = "Childs with verbose name plural - name"
            verbose_name_plural = "Childs with verbose name plural - plural name"

        class BothVerboseNameProfileInline(TabularInline):
            model = BothVerboseNameProfile
            verbose_name = "Childs with both - name"
            verbose_name_plural = "Childs with both - plural name"

        modeladmin = ModelAdmin(ProfileCollection, admin_site)
        modeladmin.inlines = [
            NonVerboseProfileInline,
            VerboseNameProfileInline,
            VerboseNamePluralProfileInline,
            BothVerboseNameProfileInline,
        ]
        obj = ProfileCollection.objects.create()
        url = reverse("admin:admin_inlines_profilecollection_change", args=(obj.pk,))
        request = self.factory.get(url)
        request.user = self.superuser
        response = modeladmin.changeform_view(request)
        self.assertNotContains(response, "Add another Profile")
        # Non-verbose model.
        self.assertContains(response, "<h2>Non-verbose childs - plural name</h2>")
        self.assertContains(response, "Add another Non-verbose childs - name")
        self.assertNotContains(response, "<h2>Profiles</h2>")
        # Model with verbose name.
        self.assertContains(response, "<h2>Childs with verbose name - plural name</h2>")
        self.assertContains(response, "Add another Childs with verbose name - name")
        self.assertNotContains(response, "<h2>Model with verbose name onlys</h2>")
        # Model with verbose name plural.
        self.assertContains(
            response,
            "<h2>Childs with verbose name plural - plural name</h2>",
        )
        self.assertContains(
            response,
            "Add another Childs with verbose name plural - name",
        )
        self.assertNotContains(response, "<h2>Model with verbose name plural only</h2>")
        # Model with both verbose names.
        self.assertContains(response, "<h2>Childs with both - plural name</h2>")
        self.assertContains(response, "Add another Childs with both - name")
        self.assertNotContains(response, "<h2>Model with both - plural name</h2>")
        self.assertNotContains(response, "Add another Model with both - name")


@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.
        """
        from selenium.webdriver.common.by import By

        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"
        rows_selector = "%s .dynamic-inner4stacked_set" % inline_id

        self.assertCountSeleniumElements(rows_selector, 3)
        add_button = self.selenium.find_element(
            By.LINK_TEXT, "Add another Inner4 stacked"
        )
        add_button.click()
        self.assertCountSeleniumElements(rows_selector, 4)

    def test_delete_stackeds(self):
        from selenium.webdriver.common.by import By

        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"
        rows_selector = "%s .dynamic-inner4stacked_set" % inline_id

        self.assertCountSeleniumElements(rows_selector, 3)

        add_button = self.selenium.find_element(
            By.LINK_TEXT, "Add another Inner4 stacked"
        )
        add_button.click()
        add_button.click()

        self.assertCountSeleniumElements(rows_selector, 5)
        for delete_link in self.selenium.find_elements(
            By.CSS_SELECTOR, "%s .inline-deletelink" % inline_id
        ):
            delete_link.click()
        with self.disable_implicit_wait():
            self.assertCountSeleniumElements(rows_selector, 0)

    def test_delete_invalid_stacked_inlines(self):
        from selenium.common.exceptions import NoSuchElementException
        from selenium.webdriver.common.by import By

        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"
        rows_selector = "%s .dynamic-inner4stacked_set" % inline_id

        self.assertCountSeleniumElements(rows_selector, 3)

        add_button = self.selenium.find_element(
            By.LINK_TEXT,
            "Add another Inner4 stacked",
        )
        add_button.click()
        add_button.click()
        self.assertCountSeleniumElements("#id_inner4stacked_set-4-dummy", 1)

        # Enter some data and click 'Save'.
        self.selenium.find_element(By.NAME, "dummy").send_keys("1")
        self.selenium.find_element(By.NAME, "inner4stacked_set-0-dummy").send_keys(
            "100"
        )
        self.selenium.find_element(By.NAME, "inner4stacked_set-1-dummy").send_keys(
            "101"
        )
        self.selenium.find_element(By.NAME, "inner4stacked_set-2-dummy").send_keys(
            "222"
        )
        self.selenium.find_element(By.NAME, "inner4stacked_set-3-dummy").send_keys(
            "103"
        )
        self.selenium.find_element(By.NAME, "inner4stacked_set-4-dummy").send_keys(
            "222"
        )
        with self.wait_page_loaded():
            self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()

        # Sanity check.
        self.assertCountSeleniumElements(rows_selector, 5)
        errorlist = self.selenium.find_element(
            By.CSS_SELECTOR,
            "%s .dynamic-inner4stacked_set .errorlist li" % inline_id,
        )
        self.assertEqual("Please correct the duplicate values below.", errorlist.text)
        delete_link = self.selenium.find_element(
            By.CSS_SELECTOR, "#inner4stacked_set-4 .inline-deletelink"
        )
        delete_link.click()
        self.assertCountSeleniumElements(rows_selector, 4)
        with self.disable_implicit_wait(), self.assertRaises(NoSuchElementException):
            self.selenium.find_element(
                By.CSS_SELECTOR,
                "%s .dynamic-inner4stacked_set .errorlist li" % inline_id,
            )

        with self.wait_page_loaded():
            self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()

        # The objects have been created in the database.
        self.assertEqual(Inner4Stacked.objects.count(), 4)

    def test_delete_invalid_tabular_inlines(self):
        from selenium.common.exceptions import NoSuchElementException
        from selenium.webdriver.common.by import By

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

        inline_id = "#inner4tabular_set-group"
        rows_selector = "%s .dynamic-inner4tabular_set" % inline_id

        self.assertCountSeleniumElements(rows_selector, 3)

        add_button = self.selenium.find_element(
            By.LINK_TEXT, "Add another Inner4 tabular"
        )
        add_button.click()
        add_button.click()
        self.assertCountSeleniumElements("#id_inner4tabular_set-4-dummy", 1)

        # Enter some data and click 'Save'.
        self.selenium.find_element(By.NAME, "dummy").send_keys("1")
        self.selenium.find_element(By.NAME, "inner4tabular_set-0-dummy").send_keys(
            "100"
        )
        self.selenium.find_element(By.NAME, "inner4tabular_set-1-dummy").send_keys(
            "101"
        )
        self.selenium.find_element(By.NAME, "inner4tabular_set-2-dummy").send_keys(
            "222"
        )
        self.selenium.find_element(By.NAME, "inner4tabular_set-3-dummy").send_keys(
            "103"
        )
        self.selenium.find_element(By.NAME, "inner4tabular_set-4-dummy").send_keys(
            "222"
        )
        with self.wait_page_loaded():
            self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()

        # Sanity Check.
        self.assertCountSeleniumElements(rows_selector, 5)

        # Non-field errorlist is in its own <tr> just before
        # tr#inner4tabular_set-3:
        errorlist = self.selenium.find_element(
            By.CSS_SELECTOR,
            "%s #inner4tabular_set-3 + .row-form-errors .errorlist li" % inline_id,
        )
        self.assertEqual("Please correct the duplicate values below.", errorlist.text)
        delete_link = self.selenium.find_element(
            By.CSS_SELECTOR, "#inner4tabular_set-4 .inline-deletelink"
        )
        delete_link.click()

        self.assertCountSeleniumElements(rows_selector, 4)
        with self.disable_implicit_wait(), self.assertRaises(NoSuchElementException):
            self.selenium.find_element(
                By.CSS_SELECTOR,
                "%s .dynamic-inner4tabular_set .errorlist li" % inline_id,
            )

        with self.wait_page_loaded():
            self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()

        # The objects have been created in the database.
        self.assertEqual(Inner4Tabular.objects.count(), 4)

    def test_add_inlines(self):
        """
        The "Add another XXX" link correctly adds items to the inline form.
        """
        from selenium.webdriver.common.by import By

        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.assertCountSeleniumElements(".dynamic-profile_set", 1)
        self.assertEqual(
            self.selenium.find_elements(By.CSS_SELECTOR, ".dynamic-profile_set")[
                0
            ].get_attribute("id"),
            "profile_set-0",
        )
        self.assertCountSeleniumElements(
            ".dynamic-profile_set#profile_set-0 input[name=profile_set-0-first_name]", 1
        )
        self.assertCountSeleniumElements(
            ".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.assertCountSeleniumElements(".dynamic-profile_set", 2)
        self.assertEqual(
            self.selenium.find_elements(By.CSS_SELECTOR, ".dynamic-profile_set")[
                1
            ].get_attribute("id"),
            "profile_set-1",
        )
        self.assertCountSeleniumElements(
            ".dynamic-profile_set#profile_set-1 input[name=profile_set-1-first_name]", 1
        )
        self.assertCountSeleniumElements(
            ".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.assertCountSeleniumElements(".dynamic-profile_set", 3)
        self.assertEqual(
            self.selenium.find_elements(By.CSS_SELECTOR, ".dynamic-profile_set")[
                2
            ].get_attribute("id"),
            "profile_set-2",
        )
        self.assertCountSeleniumElements(
            ".dynamic-profile_set#profile_set-2 input[name=profile_set-2-first_name]", 1
        )
        self.assertCountSeleniumElements(
            ".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"
        )

        with self.wait_page_loaded():
            self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()

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

    def test_add_inline_link_absent_for_view_only_parent_model(self):
        from selenium.common.exceptions import NoSuchElementException
        from selenium.webdriver.common.by import By

        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):
        from selenium.webdriver.common.by import By

        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.assertCountSeleniumElements(
            "#profile_set-group table tr.dynamic-profile_set", 5
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-0", 1
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-1", 1
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-2", 1
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-3", 1
        )
        self.assertCountSeleniumElements(
            "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.assertCountSeleniumElements(
            "#profile_set-group table tr.dynamic-profile_set", 3
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-0", 1
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-1", 1
        )
        self.assertCountSeleniumElements(
            "form#profilecollection_form tr.dynamic-profile_set#profile_set-2", 1
        )

    def test_collapsed_inlines(self):
        from selenium.webdriver.common.by import By

        # 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):
        from selenium.webdriver.common.by import By

        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)

    def assertBorder(self, element, border):
        width, style, color = border.split(" ")
        border_properties = [
            "border-bottom-%s",
            "border-left-%s",
            "border-right-%s",
            "border-top-%s",
        ]
        for prop in border_properties:
            prop = prop % "width"
            self.assertEqual(element.value_of_css_property(prop), width)
        for prop in border_properties:
            prop = prop % "style"
            self.assertEqual(element.value_of_css_property(prop), style)
        # Convert hex color to rgb.
        self.assertRegex(color, "#[0-9a-f]{6}")
        r, g, b = int(color[1:3], 16), int(color[3:5], 16), int(color[5:], 16)
        # The value may be expressed as either rgb() or rgba() depending on the
        # browser.
        colors = [
            "rgb(%d, %d, %d)" % (r, g, b),
            "rgba(%d, %d, %d, 1)" % (r, g, b),
        ]
        for prop in border_properties:
            prop = prop % "color"
            self.assertIn(element.value_of_css_property(prop), colors)

    def test_inline_formset_error_input_border(self):
        from selenium.webdriver.common.by import By

        self.admin_login(username="super", password="secret")
        self.selenium.get(
            self.live_server_url + reverse("admin:admin_inlines_holder5_add")
        )
        self.wait_until_visible("#id_dummy")
        self.selenium.find_element(By.ID, "id_dummy").send_keys(1)
        fields = ["id_inner5stacked_set-0-dummy", "id_inner5tabular_set-0-dummy"]
        show_links = self.selenium.find_elements(By.LINK_TEXT, "SHOW")
        for show_index, field_name in enumerate(fields):
            show_links[show_index].click()
            self.wait_until_visible("#" + field_name)
            self.selenium.find_element(By.ID, field_name).send_keys(1)

        # Before save all inputs have default border
        for inline in ("stacked", "tabular"):
            for field_name in ("name", "select", "text"):
                element_id = "id_inner5%s_set-0-%s" % (inline, field_name)
                self.assertBorder(
                    self.selenium.find_element(By.ID, element_id),
                    "1px solid #cccccc",
                )
        self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
        # Test the red border around inputs by css selectors
        stacked_selectors = [".errors input", ".errors select", ".errors textarea"]
        for selector in stacked_selectors:
            self.assertBorder(
                self.selenium.find_element(By.CSS_SELECTOR, selector),
                "1px solid #ba2121",
            )
        tabular_selectors = [
            "td ul.errorlist + input",
            "td ul.errorlist + select",
            "td ul.errorlist + textarea",
        ]
        for selector in tabular_selectors:
            self.assertBorder(
                self.selenium.find_element(By.CSS_SELECTOR, selector),
                "1px solid #ba2121",
            )

    def test_inline_formset_error(self):
        from selenium.webdriver.common.by import By

        self.admin_login(username="super", password="secret")
        self.selenium.get(
            self.live_server_url + reverse("admin:admin_inlines_holder5_add")
        )
        stacked_inline_formset_selector = (
            "div#inner5stacked_set-group fieldset.module.collapse"
        )
        tabular_inline_formset_selector = (
            "div#inner5tabular_set-group fieldset.module.collapse"
        )
        # Inlines without errors, both inlines collapsed
        self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
        self.assertCountSeleniumElements(
            stacked_inline_formset_selector + ".collapsed", 1
        )
        self.assertCountSeleniumElements(
            tabular_inline_formset_selector + ".collapsed", 1
        )
        show_links = self.selenium.find_elements(By.LINK_TEXT, "SHOW")
        self.assertEqual(len(show_links), 2)

        # Inlines with errors, both inlines expanded
        test_fields = ["#id_inner5stacked_set-0-dummy", "#id_inner5tabular_set-0-dummy"]
        for show_index, field_name in enumerate(test_fields):
            show_links[show_index].click()
            self.wait_until_visible(field_name)
            self.selenium.find_element(By.ID, field_name[1:]).send_keys(1)
        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):
            hide_link = hide_links[hide_index]
            self.selenium.execute_script(
                "window.scrollTo(0, %s);" % hide_link.location["y"]
            )
            hide_link.click()
            self.wait_until_invisible(field_name)
        with self.wait_page_loaded():
            self.selenium.find_element(By.XPATH, '//input[@value="Save"]').click()
        with self.disable_implicit_wait():
            self.assertCountSeleniumElements(
                stacked_inline_formset_selector + ".collapsed", 0
            )
            self.assertCountSeleniumElements(
                tabular_inline_formset_selector + ".collapsed", 0
            )
        self.assertCountSeleniumElements(stacked_inline_formset_selector, 1)
        self.assertCountSeleniumElements(tabular_inline_formset_selector, 1)

    def test_inlines_verbose_name(self):
        """
        The item added by the "Add another XXX" link must use the correct
        verbose_name in the inline form.
        """
        from selenium.webdriver.common.by import By

        self.admin_login(username="super", password="secret")
        # Hide sidebar.
        self.selenium.get(
            self.live_server_url + reverse("admin:admin_inlines_course_add")
        )
        toggle_button = self.selenium.find_element(
            By.CSS_SELECTOR, "#toggle-nav-sidebar"
        )
        toggle_button.click()
        # Each combination of horizontal/vertical filter with stacked/tabular
        # inlines.
        tests = [
            "admin:admin_inlines_course_add",
            "admin:admin_inlines_courseproxy_add",
            "admin:admin_inlines_courseproxy1_add",
            "admin:admin_inlines_courseproxy2_add",
        ]
        css_selector = ".dynamic-class_set#class_set-%s h2"

        for url_name in tests:
            with self.subTest(url=url_name):
                self.selenium.get(self.live_server_url + reverse(url_name))
                # First inline shows the verbose_name.
                available, chosen = self.selenium.find_elements(
                    By.CSS_SELECTOR, css_selector % 0
                )
                self.assertEqual(available.text, "AVAILABLE ATTENDANT")
                self.assertEqual(chosen.text, "CHOSEN ATTENDANT")
                # Added inline should also have the correct verbose_name.
                self.selenium.find_element(By.LINK_TEXT, "Add another Class").click()
                available, chosen = self.selenium.find_elements(
                    By.CSS_SELECTOR, css_selector % 1
                )
                self.assertEqual(available.text, "AVAILABLE ATTENDANT")
                self.assertEqual(chosen.text, "CHOSEN ATTENDANT")
                # Third inline should also have the correct verbose_name.
                self.selenium.find_element(By.LINK_TEXT, "Add another Class").click()
                available, chosen = self.selenium.find_elements(
                    By.CSS_SELECTOR, css_selector % 2
                )
                self.assertEqual(available.text, "AVAILABLE ATTENDANT")
                self.assertEqual(chosen.text, "CHOSEN ATTENDANT")