Add missing ``CustomRendition`` model to the testapp

wagtail/tests/testapp/migrations/0015_auto_20170210_2058.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-02-10 11:58
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+import wagtail.wagtailimages.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tests', '0014_event_categories'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='CustomRendition',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('filter_spec', models.CharField(db_index=True, max_length=255)),
+                ('file', models.ImageField(height_field='height', upload_to=wagtail.wagtailimages.models.get_rendition_upload_to, width_field='width')),
+                ('width', models.IntegerField(editable=False)),
+                ('height', models.IntegerField(editable=False)),
+                ('focal_point_key', models.CharField(blank=True, default='', editable=False, max_length=16)),
+                ('image', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='renditions', to='tests.CustomImage')),
+            ],
+        ),
+        migrations.AlterUniqueTogether(
+            name='customrendition',
+            unique_together=set([('image', 'filter_spec', 'focal_point_key')]),
+        ),
+    ]

wagtail/tests/testapp/models.py

@@ -32,7 +32,7 @@ from wagtail.wagtaildocs.edit_handlers import DocumentChooserPanel
 from wagtail.wagtailforms.models import AbstractEmailForm, AbstractFormField, AbstractFormSubmission
 from wagtail.wagtailimages.blocks import ImageChooserBlock
 from wagtail.wagtailimages.edit_handlers import ImageChooserPanel
-from wagtail.wagtailimages.models import AbstractImage, Image
+from wagtail.wagtailimages.models import AbstractImage, AbstractRendition, Image
 from wagtail.wagtailsearch import index
 from wagtail.wagtailsnippets.edit_handlers import SnippetChooserPanel
 from wagtail.wagtailsnippets.models import register_snippet
@@ -640,6 +640,15 @@ class CustomImage(AbstractImage):
     )
 
 
+class CustomRendition(AbstractRendition):
+    image = models.ForeignKey(CustomImage, related_name='renditions', on_delete=models.CASCADE)
+
+    class Meta:
+        unique_together = (
+            ('image', 'filter_spec', 'focal_point_key'),
+        )
+
+
 class StreamModel(models.Model):
     body = StreamField([
         ('text', CharBlock()),