Commit cd7e271e authored by Russell Keith-Magee's avatar Russell Keith-Magee
Browse files

[1.2.X] Migrated fixtures_regress doctests. Thanks to David Brenneman 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
parent 49544ffb

AUTHORS

+1 −0
Original line number Diff line number Diff line
@@ -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

tests/regressiontests/fixtures_regress/models.py

+29 −220
Original line number Diff line number Diff line 
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)
@@ -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)
@@ -40,6 +36,7 @@ class Stuff(models.Model): 
            name = None

        return unicode(name) + u' is owned by ' + unicode(self.owner)





class Absolute(models.Model):

    name = models.CharField(max_length=40)
@@ -49,19 +46,23 @@ class Absolute(models.Model): 
        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)
@@ -69,6 +70,7 @@ class Article(models.Model): 
    class Meta:

        ordering = ('id',)





# Models to regression test #11428

class Widget(models.Model):

    name = models.CharField(max_length=255)
@@ -79,16 +81,18 @@ class Widget(models.Model): 
    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)
@@ -102,6 +106,7 @@ class Store(models.Model): 
    def natural_key(self):

        return (self.name,)





class Person(models.Model):

    objects = TestManager()

    name = models.CharField(max_length=255)
@@ -118,6 +123,7 @@ class Person(models.Model): 
        return (self.name,)

    natural_key.dependencies = ['fixtures_regress.store']





class Book(models.Model):

    name = models.CharField(max_length=255)

    author = models.ForeignKey(Person)
@@ -133,10 +139,12 @@ class Book(models.Model): 
            ', '.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()
@@ -147,6 +155,7 @@ class NKChild(Parent): 
    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')
@@ -159,260 +168,60 @@ class RefToNKChild(models.Model): 
            ', '.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)>]



"""}

tests/regressiontests/fixtures_regress/tests.py

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