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[1.2.X] Migrated fixtures_regress doctests. Thanks to David Brenneman…
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… for the patch.

Backport of r13954 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@13955 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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@freakboy3742
freakboy3742 committed Sep 28, 2010
1 parent 49544ff commit cd7e271
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1 change: 1 addition & 0 deletions AUTHORS
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Expand Up @@ -82,6 +82,7 @@ answer newbie questions, and generally made Django that much better:
Matías Bordese
Sean Brant
Andrew Brehaut <http://brehaut.net/blog>
David Brennenman <http://davidbrenneman.com>
brut.alll@gmail.com
bthomas
btoll@bestweb.net
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249 changes: 29 additions & 220 deletions tests/regressiontests/fixtures_regress/models.py
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@@ -1,7 +1,7 @@
from django.db import models, DEFAULT_DB_ALIAS
from django.contrib.auth.models import User
from django.conf import settings
import os


class Animal(models.Model):
name = models.CharField(max_length=150)
Expand All @@ -15,10 +15,6 @@ class Animal(models.Model):
def __unicode__(self):
return self.name

def animal_pre_save_check(signal, sender, instance, **kwargs):
"A signal that is used to check the type of data loaded from fixtures"
print 'Count = %s (%s)' % (instance.count, type(instance.count))
print 'Weight = %s (%s)' % (instance.weight, type(instance.weight))

class Plant(models.Model):
name = models.CharField(max_length=150)
Expand All @@ -40,6 +36,7 @@ def __unicode__(self):
name = None
return unicode(name) + u' is owned by ' + unicode(self.owner)


class Absolute(models.Model):
name = models.CharField(max_length=40)

Expand All @@ -49,26 +46,31 @@ def __init__(self, *args, **kwargs):
super(Absolute, self).__init__(*args, **kwargs)
Absolute.load_count += 1


class Parent(models.Model):
name = models.CharField(max_length=10)

class Meta:
ordering = ('id',)


class Child(Parent):
data = models.CharField(max_length=10)


# Models to regression test #7572
class Channel(models.Model):
name = models.CharField(max_length=255)


class Article(models.Model):
title = models.CharField(max_length=255)
channels = models.ManyToManyField(Channel)

class Meta:
ordering = ('id',)


# Models to regression test #11428
class Widget(models.Model):
name = models.CharField(max_length=255)
Expand All @@ -79,16 +81,18 @@ class Meta:
def __unicode__(self):
return self.name


class WidgetProxy(Widget):
class Meta:
proxy = True

# Check for forward references in FKs and M2Ms with natural keys

# Check for forward references in FKs and M2Ms with natural keys
class TestManager(models.Manager):
def get_by_natural_key(self, key):
return self.get(name=key)


class Store(models.Model):
objects = TestManager()
name = models.CharField(max_length=255)
Expand All @@ -102,6 +106,7 @@ def __unicode__(self):
def natural_key(self):
return (self.name,)


class Person(models.Model):
objects = TestManager()
name = models.CharField(max_length=255)
Expand All @@ -118,6 +123,7 @@ def natural_key(self):
return (self.name,)
natural_key.dependencies = ['fixtures_regress.store']


class Book(models.Model):
name = models.CharField(max_length=255)
author = models.ForeignKey(Person)
Expand All @@ -133,10 +139,12 @@ def __unicode__(self):
', '.join(s.name for s in self.stores.all())
)


class NKManager(models.Manager):
def get_by_natural_key(self, data):
return self.get(data=data)


class NKChild(Parent):
data = models.CharField(max_length=10, unique=True)
objects = NKManager()
Expand All @@ -147,6 +155,7 @@ def natural_key(self):
def __unicode__(self):
return u'NKChild %s:%s' % (self.name, self.data)


class RefToNKChild(models.Model):
text = models.CharField(max_length=10)
nk_fk = models.ForeignKey(NKChild, related_name='ref_fks')
Expand All @@ -159,260 +168,60 @@ def __unicode__(self):
', '.join(str(o) for o in self.nk_m2m.all())
)


# ome models with pathological circular dependencies
class Circle1(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.circle2']


class Circle2(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.circle1']


class Circle3(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.circle3']


class Circle4(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.circle5']


class Circle5(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.circle6']


class Circle6(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.circle4']


class ExternalDependency(models.Model):
name = models.CharField(max_length=255)

def natural_key(self):
return self.name
natural_key.dependencies = ['fixtures_regress.book']

__test__ = {'API_TESTS':"""
>>> from django.core import management
# Load a fixture that uses PK=1
>>> management.call_command('loaddata', 'sequence', verbosity=0)
# Create a new animal. Without a sequence reset, this new object
# will take a PK of 1 (on Postgres), and the save will fail.
# This is a regression test for ticket #3790.
>>> animal = Animal(name='Platypus', latin_name='Ornithorhynchus anatinus', count=2, weight=2.2)
>>> animal.save()
###############################################
# Regression test for ticket #4558 -- pretty printing of XML fixtures
# doesn't affect parsing of None values.
# Load a pretty-printed XML fixture with Nulls.
>>> management.call_command('loaddata', 'pretty.xml', verbosity=0)
>>> Stuff.objects.all()
[<Stuff: None is owned by None>]
###############################################
# Regression test for ticket #6436 --
# os.path.join will throw away the initial parts of a path if it encounters
# an absolute path. This means that if a fixture is specified as an absolute path,
# we need to make sure we don't discover the absolute path in every fixture directory.
>>> load_absolute_path = os.path.join(os.path.dirname(__file__), 'fixtures', 'absolute.json')
>>> management.call_command('loaddata', load_absolute_path, verbosity=0)
>>> Absolute.load_count
1
###############################################
# Test for ticket #4371 -- fixture loading fails silently in testcases
# Validate that error conditions are caught correctly
# redirect stderr for the next few tests...
>>> import sys
>>> savestderr = sys.stderr
>>> sys.stderr = sys.stdout
# Loading data of an unknown format should fail
>>> management.call_command('loaddata', 'bad_fixture1.unkn', verbosity=0)
Problem installing fixture 'bad_fixture1': unkn is not a known serialization format.
# Loading a fixture file with invalid data using explicit filename
>>> management.call_command('loaddata', 'bad_fixture2.xml', verbosity=0)
No fixture data found for 'bad_fixture2'. (File format may be invalid.)
# Loading a fixture file with invalid data without file extension
>>> management.call_command('loaddata', 'bad_fixture2', verbosity=0)
No fixture data found for 'bad_fixture2'. (File format may be invalid.)
# Loading a fixture file with no data returns an error
>>> management.call_command('loaddata', 'empty', verbosity=0)
No fixture data found for 'empty'. (File format may be invalid.)
# If any of the fixtures contain an error, loading is aborted
# (Regression for #9011 - error message is correct)
>>> management.call_command('loaddata', 'bad_fixture2', 'animal', verbosity=0)
No fixture data found for 'bad_fixture2'. (File format may be invalid.)
>>> sys.stderr = savestderr
###############################################
# Test for ticket #7565 -- PostgreSQL sequence resetting checks shouldn't
# ascend to parent models when inheritance is used (since they are treated
# individually).
>>> management.call_command('loaddata', 'model-inheritance.json', verbosity=0)
###############################################
# Test for ticket #13030 -- natural keys deserialize with fk to inheriting model
# load data with natural keys
>>> management.call_command('loaddata', 'nk-inheritance.json', verbosity=0)
>>> NKChild.objects.get(pk=1)
<NKChild: NKChild fred:apple>
>>> RefToNKChild.objects.get(pk=1)
<RefToNKChild: my text: Reference to NKChild fred:apple [NKChild fred:apple]>
# ... and again in XML
>>> management.call_command('loaddata', 'nk-inheritance2.xml', verbosity=0)
>>> NKChild.objects.get(pk=2)
<NKChild: NKChild james:banana>
>>> RefToNKChild.objects.get(pk=2)
<RefToNKChild: other text: Reference to NKChild fred:apple [NKChild fred:apple, NKChild james:banana]>
###############################################
# Test for ticket #7572 -- MySQL has a problem if the same connection is
# used to create tables, load data, and then query over that data.
# To compensate, we close the connection after running loaddata.
# This ensures that a new connection is opened when test queries are issued.
>>> management.call_command('loaddata', 'big-fixture.json', verbosity=0)
>>> articles = Article.objects.exclude(id=9)
>>> articles.values_list('id', flat=True)
[1, 2, 3, 4, 5, 6, 7, 8]
# Just for good measure, run the same query again. Under the influence of
# ticket #7572, this will give a different result to the previous call.
>>> articles.values_list('id', flat=True)
[1, 2, 3, 4, 5, 6, 7, 8]
###############################################
# Test for tickets #8298, #9942 - Field values should be coerced into the
# correct type by the deserializer, not as part of the database write.
>>> models.signals.pre_save.connect(animal_pre_save_check)
>>> management.call_command('loaddata', 'animal.xml', verbosity=0)
Count = 42 (<type 'int'>)
Weight = 1.2 (<type 'float'>)
>>> models.signals.pre_save.disconnect(animal_pre_save_check)
###############################################
# Regression for #11286 -- Ensure that dumpdata honors the default manager
# Dump the current contents of the database as a JSON fixture
>>> management.call_command('dumpdata', 'fixtures_regress.animal', format='json')
[{"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"}}]
###############################################
# Regression for #11428 - Proxy models aren't included when you dumpdata
# Flush out the database first
>>> management.call_command('reset', 'fixtures_regress', interactive=False, verbosity=0)
# Create an instance of the concrete class
>>> Widget(name='grommet').save()
# Dump data for the entire app. The proxy class shouldn't be included
>>> management.call_command('dumpdata', 'fixtures_regress.widget', 'fixtures_regress.widgetproxy', format='json')
[{"pk": 1, "model": "fixtures_regress.widget", "fields": {"name": "grommet"}}]
###############################################
# Check that natural key requirements are taken into account
# when serializing models
>>> management.call_command('loaddata', 'forward_ref_lookup.json', verbosity=0)
>>> management.call_command('dumpdata', 'fixtures_regress.book', 'fixtures_regress.person', 'fixtures_regress.store', verbosity=0, use_natural_keys=True)
[{"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"]}}]
# Now lets check the dependency sorting explicitly
# It doesn't matter what order you mention the models
# Store *must* be serialized before then Person, and both
# must be serialized before Book.
>>> from django.core.management.commands.dumpdata import sort_dependencies
>>> sort_dependencies([('fixtures_regress', [Book, Person, Store])])
[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
>>> sort_dependencies([('fixtures_regress', [Book, Store, Person])])
[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
>>> sort_dependencies([('fixtures_regress', [Store, Book, Person])])
[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
>>> sort_dependencies([('fixtures_regress', [Store, Person, Book])])
[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
>>> sort_dependencies([('fixtures_regress', [Person, Book, Store])])
[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
>>> sort_dependencies([('fixtures_regress', [Person, Store, Book])])
[<class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
# A dangling dependency - assume the user knows what they are doing.
>>> sort_dependencies([('fixtures_regress', [Person, Circle1, Store, Book])])
[<class 'regressiontests.fixtures_regress.models.Circle1'>, <class 'regressiontests.fixtures_regress.models.Store'>, <class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>]
# A tight circular dependency
>>> sort_dependencies([('fixtures_regress', [Person, Circle2, Circle1, Store, Book])])
Traceback (most recent call last):
...
CommandError: Can't resolve dependencies for fixtures_regress.Circle1, fixtures_regress.Circle2 in serialized app list.
>>> sort_dependencies([('fixtures_regress', [Circle1, Book, Circle2])])
Traceback (most recent call last):
...
CommandError: Can't resolve dependencies for fixtures_regress.Circle1, fixtures_regress.Circle2 in serialized app list.
# A self referential dependency
>>> sort_dependencies([('fixtures_regress', [Book, Circle3])])
Traceback (most recent call last):
...
CommandError: Can't resolve dependencies for fixtures_regress.Circle3 in serialized app list.
# A long circular dependency
>>> sort_dependencies([('fixtures_regress', [Person, Circle2, Circle1, Circle3, Store, Book])])
Traceback (most recent call last):
...
CommandError: Can't resolve dependencies for fixtures_regress.Circle1, fixtures_regress.Circle2, fixtures_regress.Circle3 in serialized app list.
# A dependency on a normal, non-natural-key model
>>> sort_dependencies([('fixtures_regress', [Person, ExternalDependency, Book])])
[<class 'regressiontests.fixtures_regress.models.Person'>, <class 'regressiontests.fixtures_regress.models.Book'>, <class 'regressiontests.fixtures_regress.models.ExternalDependency'>]
###############################################
# Check that normal primary keys still work
# on a model with natural key capabilities
>>> management.call_command('loaddata', 'non_natural_1.json', verbosity=0)
>>> management.call_command('loaddata', 'non_natural_2.xml', verbosity=0)
>>> Book.objects.all()
[<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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