Add tests for custom page form classes

wagtail/tests/testapp/forms.py

@@ -0,0 +1,14 @@
+from django import forms
+
+from wagtail.wagtailadmin.forms import WagtailAdminPageForm
+
+
+class ValidatedPageForm(WagtailAdminPageForm):
+    def clean_foo(self):
+        if 'foo' not in self.cleaned_data:
+            return
+
+        value = self.cleaned_data['foo']
+        if value != 'bar':
+            raise forms.ValidationError('Field foo must be bar')
+        return value

wagtail/tests/testapp/migrations/0024_validatedpage.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9 on 2016-01-25 05:54
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('wagtailcore', '0024_alter_page_content_type_on_delete_behaviour'),
+        ('tests', '0023_mycustompage'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ValidatedPage',
+            fields=[
+                ('page_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='wagtailcore.Page')),
+                ('foo', models.CharField(max_length=255)),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=('wagtailcore.page',),
+        ),
+    ]

wagtail/tests/testapp/models.py

@@ -32,6 +32,8 @@ from wagtail.wagtailsearch import index
 from wagtail.wagtailimages.models import AbstractImage, Image
 from wagtail.wagtailimages.blocks import ImageChooserBlock
 
+from .forms import ValidatedPageForm
+
 
 EVENT_AUDIENCE_CHOICES = (
     ('public', "Public"),
@@ -602,3 +604,12 @@ class MyBasePage(Page):
 
 class MyCustomPage(MyBasePage):
     pass
+
+
+class ValidatedPage(Page):
+    foo = models.CharField(max_length=255)
+
+    base_form_class = ValidatedPageForm
+    content_panels = Page.content_panels + [
+        FieldPanel('foo'),
+    ]

wagtail/wagtailadmin/tests/test_edit_handlers.py

@@ -20,9 +20,10 @@ from wagtail.wagtailadmin.widgets import AdminPageChooser, AdminDateInput, Admin
 from wagtail.wagtailimages.edit_handlers import ImageChooserPanel
 from wagtail.wagtailcore.models import Page, Site
 from wagtail.wagtailcore.fields import RichTextArea
+from wagtail.tests.testapp.forms import ValidatedPageForm
 from wagtail.tests.testapp.models import (
-    PageChooserModel, EventPageChooserModel, EventPage, EventPageSpeaker, SimplePage
+    PageChooserModel, EventPageChooserModel, EventPage, EventPageSpeaker,
-)
+    SimplePage, ValidatedPage)
 from wagtail.tests.utils import WagtailTestUtils
 
 
@@ -122,6 +123,14 @@ class TestPageEditHandlers(TestCase):
         # The generated form should inherit from WagtailAdminPageForm
         self.assertTrue(issubclass(EventPageForm, WagtailAdminPageForm))
 
+    def test_get_form_for_page_with_custom_base(self):
+        EditHandler = ValidatedPage.get_edit_handler()
+        GeneratedValidatedPageForm = EditHandler.get_form_class(ValidatedPage)
+
+        # The generated form should inherit from ValidatedPageForm, because
+        # ValidatedPageForm.base_form_class == ValidatedPageForm
+        self.assertTrue(issubclass(GeneratedValidatedPageForm, ValidatedPageForm))
+
 
 class TestExtractPanelDefinitionsFromModelClass(TestCase):
     def test_can_extract_panel_property(self):