mirror of https://github.com/django/django.git
369 lines
15 KiB
Python
369 lines
15 KiB
Python
from django.db import models, DEFAULT_DB_ALIAS
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from django.contrib.auth.models import User
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from django.conf import settings
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import os
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class Animal(models.Model):
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name = models.CharField(max_length=150)
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latin_name = models.CharField(max_length=150)
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count = models.IntegerField()
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weight = models.FloatField()
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# use a non-default name for the default manager
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specimens = models.Manager()
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def __unicode__(self):
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return self.name
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def animal_pre_save_check(signal, sender, instance, **kwargs):
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"A signal that is used to check the type of data loaded from fixtures"
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print 'Count = %s (%s)' % (instance.count, type(instance.count))
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print 'Weight = %s (%s)' % (instance.weight, type(instance.weight))
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class Plant(models.Model):
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name = models.CharField(max_length=150)
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class Meta:
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# For testing when upper case letter in app name; regression for #4057
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db_table = "Fixtures_regress_plant"
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class Stuff(models.Model):
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name = models.CharField(max_length=20, null=True)
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owner = models.ForeignKey(User, null=True)
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def __unicode__(self):
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# Oracle doesn't distinguish between None and the empty string.
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# This hack makes the test case pass using Oracle.
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name = self.name
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if (settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] == 'django.db.backends.oracle'
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and name == u''):
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name = None
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return unicode(name) + u' is owned by ' + unicode(self.owner)
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class Absolute(models.Model):
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name = models.CharField(max_length=40)
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load_count = 0
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def __init__(self, *args, **kwargs):
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super(Absolute, self).__init__(*args, **kwargs)
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Absolute.load_count += 1
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class Parent(models.Model):
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name = models.CharField(max_length=10)
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class Child(Parent):
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data = models.CharField(max_length=10)
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# Models to regression test #7572
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class Channel(models.Model):
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name = models.CharField(max_length=255)
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class Article(models.Model):
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title = models.CharField(max_length=255)
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channels = models.ManyToManyField(Channel)
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class Meta:
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ordering = ('id',)
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# Models to regression test #11428
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class Widget(models.Model):
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name = models.CharField(max_length=255)
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class Meta:
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ordering = ('name',)
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def __unicode__(self):
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return self.name
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class WidgetProxy(Widget):
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class Meta:
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proxy = True
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# Check for forward references in FKs and M2Ms with natural keys
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class TestManager(models.Manager):
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def get_by_natural_key(self, key):
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return self.get(name=key)
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class Store(models.Model):
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objects = TestManager()
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name = models.CharField(max_length=255)
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class Meta:
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ordering = ('name',)
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def __unicode__(self):
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return self.name
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def natural_key(self):
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return (self.name,)
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class Person(models.Model):
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objects = TestManager()
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name = models.CharField(max_length=255)
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class Meta:
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ordering = ('name',)
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def __unicode__(self):
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return self.name
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# Person doesn't actually have a dependency on store, but we need to define
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# one to test the behaviour of the dependency resolution algorithm.
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def natural_key(self):
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return (self.name,)
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natural_key.dependencies = ['fixtures_regress.store']
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class Book(models.Model):
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name = models.CharField(max_length=255)
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author = models.ForeignKey(Person)
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stores = models.ManyToManyField(Store)
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class Meta:
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ordering = ('name',)
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def __unicode__(self):
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return u'%s by %s (available at %s)' % (
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self.name,
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self.author.name,
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', '.join(s.name for s in self.stores.all())
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)
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# ome models with pathological circular dependencies
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class Circle1(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.circle2']
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class Circle2(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.circle1']
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class Circle3(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.circle3']
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class Circle4(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.circle5']
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class Circle5(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.circle6']
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class Circle6(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.circle4']
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class ExternalDependency(models.Model):
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name = models.CharField(max_length=255)
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def natural_key(self):
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return self.name
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natural_key.dependencies = ['fixtures_regress.book']
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__test__ = {'API_TESTS':"""
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>>> from django.core import management
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# Load a fixture that uses PK=1
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>>> management.call_command('loaddata', 'sequence', verbosity=0)
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# Create a new animal. Without a sequence reset, this new object
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# will take a PK of 1 (on Postgres), and the save will fail.
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# This is a regression test for ticket #3790.
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>>> animal = Animal(name='Platypus', latin_name='Ornithorhynchus anatinus', count=2, weight=2.2)
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>>> animal.save()
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###############################################
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# Regression test for ticket #4558 -- pretty printing of XML fixtures
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# doesn't affect parsing of None values.
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# Load a pretty-printed XML fixture with Nulls.
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>>> management.call_command('loaddata', 'pretty.xml', verbosity=0)
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>>> Stuff.objects.all()
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[<Stuff: None is owned by None>]
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###############################################
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# Regression test for ticket #6436 --
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# os.path.join will throw away the initial parts of a path if it encounters
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# an absolute path. This means that if a fixture is specified as an absolute path,
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# we need to make sure we don't discover the absolute path in every fixture directory.
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>>> load_absolute_path = os.path.join(os.path.dirname(__file__), 'fixtures', 'absolute.json')
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>>> management.call_command('loaddata', load_absolute_path, verbosity=0)
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>>> Absolute.load_count
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1
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###############################################
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# Test for ticket #4371 -- fixture loading fails silently in testcases
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# Validate that error conditions are caught correctly
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# redirect stderr for the next few tests...
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>>> import sys
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>>> savestderr = sys.stderr
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>>> sys.stderr = sys.stdout
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# Loading data of an unknown format should fail
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>>> management.call_command('loaddata', 'bad_fixture1.unkn', verbosity=0)
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Problem installing fixture 'bad_fixture1': unkn is not a known serialization format.
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# Loading a fixture file with invalid data using explicit filename
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>>> management.call_command('loaddata', 'bad_fixture2.xml', verbosity=0)
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No fixture data found for 'bad_fixture2'. (File format may be invalid.)
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# Loading a fixture file with invalid data without file extension
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>>> management.call_command('loaddata', 'bad_fixture2', verbosity=0)
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No fixture data found for 'bad_fixture2'. (File format may be invalid.)
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# Loading a fixture file with no data returns an error
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>>> management.call_command('loaddata', 'empty', verbosity=0)
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No fixture data found for 'empty'. (File format may be invalid.)
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# If any of the fixtures contain an error, loading is aborted
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# (Regression for #9011 - error message is correct)
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>>> management.call_command('loaddata', 'bad_fixture2', 'animal', verbosity=0)
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No fixture data found for 'bad_fixture2'. (File format may be invalid.)
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>>> sys.stderr = savestderr
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###############################################
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# Test for ticket #7565 -- PostgreSQL sequence resetting checks shouldn't
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# ascend to parent models when inheritance is used (since they are treated
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# individually).
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>>> management.call_command('loaddata', 'model-inheritance.json', verbosity=0)
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###############################################
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# Test for ticket #7572 -- MySQL has a problem if the same connection is
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# used to create tables, load data, and then query over that data.
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# To compensate, we close the connection after running loaddata.
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# This ensures that a new connection is opened when test queries are issued.
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>>> management.call_command('loaddata', 'big-fixture.json', verbosity=0)
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>>> articles = Article.objects.exclude(id=9)
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>>> articles.values_list('id', flat=True)
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[1, 2, 3, 4, 5, 6, 7, 8]
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# Just for good measure, run the same query again. Under the influence of
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# ticket #7572, this will give a different result to the previous call.
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>>> articles.values_list('id', flat=True)
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[1, 2, 3, 4, 5, 6, 7, 8]
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###############################################
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# Test for tickets #8298, #9942 - Field values should be coerced into the
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# correct type by the deserializer, not as part of the database write.
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>>> models.signals.pre_save.connect(animal_pre_save_check)
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>>> management.call_command('loaddata', 'animal.xml', verbosity=0)
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Count = 42 (<type 'int'>)
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Weight = 1.2 (<type 'float'>)
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>>> models.signals.pre_save.disconnect(animal_pre_save_check)
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###############################################
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# Regression for #11286 -- Ensure that dumpdata honors the default manager
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# Dump the current contents of the database as a JSON fixture
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>>> management.call_command('dumpdata', 'fixtures_regress.animal', format='json')
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[{"pk": 1, "model": "fixtures_regress.animal", "fields": {"count": 3, "weight": 1.2, "name": "Lion", "latin_name": "Panthera leo"}}, {"pk": 2, "model": "fixtures_regress.animal", "fields": {"count": 2, "weight": 2.2, "name": "Platypus", "latin_name": "Ornithorhynchus anatinus"}}, {"pk": 10, "model": "fixtures_regress.animal", "fields": {"count": 42, "weight": 1.2, "name": "Emu", "latin_name": "Dromaius novaehollandiae"}}]
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###############################################
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# Regression for #11428 - Proxy models aren't included when you dumpdata
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# Flush out the database first
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>>> management.call_command('reset', 'fixtures_regress', interactive=False, verbosity=0)
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# Create an instance of the concrete class
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>>> Widget(name='grommet').save()
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# Dump data for the entire app. The proxy class shouldn't be included
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>>> management.call_command('dumpdata', 'fixtures_regress.widget', 'fixtures_regress.widgetproxy', format='json')
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[{"pk": 1, "model": "fixtures_regress.widget", "fields": {"name": "grommet"}}]
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###############################################
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# Check that natural key requirements are taken into account
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# when serializing models
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>>> management.call_command('loaddata', 'forward_ref_lookup.json', verbosity=0)
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>>> management.call_command('dumpdata', 'fixtures_regress.book', 'fixtures_regress.person', 'fixtures_regress.store', verbosity=0, use_natural_keys=True)
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[{"pk": 2, "model": "fixtures_regress.store", "fields": {"name": "Amazon"}}, {"pk": 3, "model": "fixtures_regress.store", "fields": {"name": "Borders"}}, {"pk": 4, "model": "fixtures_regress.person", "fields": {"name": "Neal Stephenson"}}, {"pk": 1, "model": "fixtures_regress.book", "fields": {"stores": [["Amazon"], ["Borders"]], "name": "Cryptonomicon", "author": ["Neal Stephenson"]}}]
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# Now lets check the dependency sorting explicitly
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# It doesn't matter what order you mention the models
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# Store *must* be serialized before then Person, and both
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# must be serialized before Book.
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>>> from django.core.management.commands.dumpdata import sort_dependencies
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>>> sort_dependencies([('fixtures_regress', [Book, Person, Store])])
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[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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>>> sort_dependencies([('fixtures_regress', [Book, Store, Person])])
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[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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>>> sort_dependencies([('fixtures_regress', [Store, Book, Person])])
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[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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>>> sort_dependencies([('fixtures_regress', [Store, Person, Book])])
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[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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>>> sort_dependencies([('fixtures_regress', [Person, Book, Store])])
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[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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>>> sort_dependencies([('fixtures_regress', [Person, Store, Book])])
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[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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# A dangling dependency - assume the user knows what they are doing.
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>>> sort_dependencies([('fixtures_regress', [Person, Circle1, Store, Book])])
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[<class 'regressiontests.fixtures_regress.models.Circle1'>, <class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
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# A tight circular dependency
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>>> sort_dependencies([('fixtures_regress', [Person, Circle2, Circle1, Store, Book])])
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Traceback (most recent call last):
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...
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CommandError: Can't resolve dependencies for fixtures_regress.Circle1, fixtures_regress.Circle2 in serialized app list.
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>>> sort_dependencies([('fixtures_regress', [Circle1, Book, Circle2])])
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Traceback (most recent call last):
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...
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CommandError: Can't resolve dependencies for fixtures_regress.Circle1, fixtures_regress.Circle2 in serialized app list.
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# A self referential dependency
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>>> sort_dependencies([('fixtures_regress', [Book, Circle3])])
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Traceback (most recent call last):
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...
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CommandError: Can't resolve dependencies for fixtures_regress.Circle3 in serialized app list.
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# A long circular dependency
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>>> sort_dependencies([('fixtures_regress', [Person, Circle2, Circle1, Circle3, Store, Book])])
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Traceback (most recent call last):
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...
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CommandError: Can't resolve dependencies for fixtures_regress.Circle1, fixtures_regress.Circle2, fixtures_regress.Circle3 in serialized app list.
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# A dependency on a normal, non-natural-key model
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>>> sort_dependencies([('fixtures_regress', [Person, ExternalDependency, Book])])
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[<class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>, <class 'regressiontests.fixtures_regress.models.ExternalDependency'>]
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###############################################
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# Check that normal primary keys still work
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# on a model with natural key capabilities
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>>> management.call_command('loaddata', 'non_natural_1.json', verbosity=0)
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>>> management.call_command('loaddata', 'non_natural_2.xml', verbosity=0)
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>>> Book.objects.all()
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[<Book: Cryptonomicon by Neal Stephenson (available at Amazon, Borders)>, <Book: Ender's Game by Orson Scott Card (available at Collins Bookstore)>, <Book: Permutation City by Greg Egan (available at Angus and Robertson)>]
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"""}
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