"""
Tests of ModelAdmin validation logic.
"""

from django.db import models

class Song(models.Model):
    title = models.CharField(max_length=150)
    
    class Meta:
        ordering = ('title',)
        
    def __unicode__(self):
        return self.title

__test__ = {'API_TESTS':"""

>>> from django import forms
>>> from django.contrib import admin
>>> from django.contrib.admin.validation import validate

#
# Regression test for #8027: custom ModelForms with fields/fieldsets
#

>>> class SongForm(forms.ModelForm):
...     pass

>>> class ValidFields(admin.ModelAdmin):
...     form = SongForm
...     fields = ['title']

>>> class InvalidFields(admin.ModelAdmin):
...     form = SongForm
...     fields = ['spam']

>>> validate(ValidFields, Song)
>>> validate(InvalidFields, Song)
Traceback (most recent call last):
    ...
ImproperlyConfigured: 'InvalidFields.fields' refers to field 'spam' that is missing from the form.

"""}