from unittest import mock

from django.contrib import admin

from django.contrib.auth.models import User

from django.test import TestCase, override_settings

from django.urls import path, reverse

from .models import Book

class Router:

    target_db = None

    def db_for_read(self, model, **hints):

        return self.target_db

    db_for_write = db_for_read

    def allow_relation(self, obj1, obj2, **hints):

        return True

site = admin.AdminSite(name="test_adminsite")

site.register(Book)

urlpatterns = [

    path("admin/", site.urls),

]

@override_settings(ROOT_URLCONF=__name__, DATABASE_ROUTERS=["%s.Router" % __name__])

class MultiDatabaseTests(TestCase):

    databases = {"default", "other"}

    @classmethod

    def setUpTestData(cls):

        cls.superusers = {}

        cls.test_book_ids = {}

        for db in cls.databases:

            Router.target_db = db

            cls.superusers[db] = User.objects.create_superuser(

                username="admin",

                password="something",

                email="[email protected]",

            )

            b = Book(name="Test Book")

            b.save(using=db)

            cls.test_book_ids[db] = b.id

    @mock.patch("django.contrib.admin.options.transaction")

    def test_add_view(self, mock):

        for db in self.databases:

            with self.subTest(db=db):

                Router.target_db = db

                self.client.force_login(self.superusers[db])

                self.client.post(

                    reverse("test_adminsite:admin_views_book_add"),

                    {"name": "Foobar: 5th edition"},

                )

                mock.atomic.assert_called_with(using=db)

    @mock.patch("django.contrib.admin.options.transaction")

    def test_change_view(self, mock):

        for db in self.databases:

            with self.subTest(db=db):

                Router.target_db = db

                self.client.force_login(self.superusers[db])

                self.client.post(

                    reverse(

                        "test_adminsite:admin_views_book_change",

                        args=[self.test_book_ids[db]],

                    ),

                    {"name": "Test Book 2: Test more"},

                )

                mock.atomic.assert_called_with(using=db)

    @mock.patch("django.contrib.admin.options.transaction")

    def test_delete_view(self, mock):

        for db in self.databases:

            with self.subTest(db=db):

                Router.target_db = db

                self.client.force_login(self.superusers[db])

                self.client.post(

                    reverse(

                        "test_adminsite:admin_views_book_delete",

                        args=[self.test_book_ids[db]],

                    ),

                    {"post": "yes"},

                )

                mock.atomic.assert_called_with(using=db)