Added tests for saving with pending actions in admin changelist.

tests/admin_changelist/admin.py

@@ -105,6 +105,8 @@ site.register(Child, DynamicListDisplayChildAdmin)
 
 class NoListDisplayLinksParentAdmin(admin.ModelAdmin):
     list_display_links = None
+    list_display = ['name']
+    list_editable = ['name']
 
 
 site.register(Parent, NoListDisplayLinksParentAdmin)

tests/admin_changelist/tests.py

@@ -1306,3 +1306,52 @@ class SeleniumTests(AdminSeleniumTestCase):
             '%s #result_list tbody tr:first-child .action-select' % form_id)
         row_selector.click()
         self.assertEqual(selection_indicator.text, "1 of 1 selected")
+
+    def test_save_with_changes_warns_on_pending_action(self):
+        from selenium.webdriver.support.ui import Select
+
+        Parent.objects.create(name='parent')
+
+        self.admin_login(username='super', password='secret')
+        self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
+
+        name_input = self.selenium.find_element_by_id('id_form-0-name')
+        name_input.clear()
+        name_input.send_keys('other name')
+        Select(
+            self.selenium.find_element_by_name('action')
+        ).select_by_value('delete_selected')
+        self.selenium.find_element_by_name('_save').click()
+        alert = self.selenium.switch_to.alert
+        try:
+            self.assertEqual(
+                alert.text,
+                'You have selected an action, but you haven\'t saved your '
+                'changes to individual fields yet. Please click OK to save. '
+                'You\'ll need to re-run the action.',
+            )
+        finally:
+            alert.dismiss()
+
+    def test_save_without_changes_warns_on_pending_action(self):
+        from selenium.webdriver.support.ui import Select
+
+        Parent.objects.create(name='parent')
+
+        self.admin_login(username='super', password='secret')
+        self.selenium.get(self.live_server_url + reverse('admin:admin_changelist_parent_changelist'))
+
+        Select(
+            self.selenium.find_element_by_name('action')
+        ).select_by_value('delete_selected')
+        self.selenium.find_element_by_name('_save').click()
+        alert = self.selenium.switch_to.alert
+        try:
+            self.assertEqual(
+                alert.text,
+                'You have selected an action, and you haven\'t made any '
+                'changes on individual fields. You\'re probably looking for '
+                'the Go button rather than the Save button.',
+            )
+        finally:
+            alert.dismiss()