268 lines
10 KiB
Python
268 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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import sys
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sys.path[0:0] = [""]
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import unittest
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from mongoengine import *
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from mongoengine import signals
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signal_output = []
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class SignalTests(unittest.TestCase):
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"""
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Testing signals before/after saving and deleting.
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"""
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def get_signal_output(self, fn, *args, **kwargs):
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# Flush any existing signal output
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global signal_output
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signal_output = []
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fn(*args, **kwargs)
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return signal_output
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def setUp(self):
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connect(db='mongoenginetest')
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class Author(Document):
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name = StringField()
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def __unicode__(self):
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return self.name
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@classmethod
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def pre_init(cls, sender, document, *args, **kwargs):
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signal_output.append('pre_init signal, %s' % cls.__name__)
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signal_output.append(str(kwargs['values']))
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@classmethod
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def post_init(cls, sender, document, **kwargs):
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signal_output.append('post_init signal, %s' % document)
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@classmethod
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def pre_save(cls, sender, document, **kwargs):
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signal_output.append('pre_save signal, %s' % document)
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@classmethod
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def post_save(cls, sender, document, **kwargs):
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signal_output.append('post_save signal, %s' % document)
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if 'created' in kwargs:
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if kwargs['created']:
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signal_output.append('Is created')
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else:
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signal_output.append('Is updated')
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@classmethod
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def pre_delete(cls, sender, document, **kwargs):
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signal_output.append('pre_delete signal, %s' % document)
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@classmethod
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def post_delete(cls, sender, document, **kwargs):
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signal_output.append('post_delete signal, %s' % document)
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@classmethod
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def pre_bulk_insert(cls, sender, documents, **kwargs):
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signal_output.append('pre_bulk_insert signal, %s' % documents)
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@classmethod
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def post_bulk_insert(cls, sender, documents, **kwargs):
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signal_output.append('post_bulk_insert signal, %s' % documents)
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if kwargs.get('loaded', False):
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signal_output.append('Is loaded')
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else:
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signal_output.append('Not loaded')
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self.Author = Author
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Author.drop_collection()
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class Another(Document):
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name = StringField()
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def __unicode__(self):
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return self.name
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@classmethod
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def pre_init(cls, sender, document, **kwargs):
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signal_output.append('pre_init Another signal, %s' % cls.__name__)
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signal_output.append(str(kwargs['values']))
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@classmethod
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def post_init(cls, sender, document, **kwargs):
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signal_output.append('post_init Another signal, %s' % document)
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@classmethod
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def pre_save(cls, sender, document, **kwargs):
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signal_output.append('pre_save Another signal, %s' % document)
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@classmethod
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def post_save(cls, sender, document, **kwargs):
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signal_output.append('post_save Another signal, %s' % document)
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if 'created' in kwargs:
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if kwargs['created']:
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signal_output.append('Is created')
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else:
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signal_output.append('Is updated')
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@classmethod
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def pre_delete(cls, sender, document, **kwargs):
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signal_output.append('pre_delete Another signal, %s' % document)
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@classmethod
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def post_delete(cls, sender, document, **kwargs):
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signal_output.append('post_delete Another signal, %s' % document)
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self.Another = Another
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Another.drop_collection()
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class ExplicitId(Document):
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id = IntField(primary_key=True)
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@classmethod
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def post_save(cls, sender, document, **kwargs):
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if 'created' in kwargs:
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if kwargs['created']:
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signal_output.append('Is created')
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else:
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signal_output.append('Is updated')
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self.ExplicitId = ExplicitId
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ExplicitId.drop_collection()
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# Save up the number of connected signals so that we can check at the
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# end that all the signals we register get properly unregistered
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self.pre_signals = (
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len(signals.pre_init.receivers),
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len(signals.post_init.receivers),
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len(signals.pre_save.receivers),
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len(signals.post_save.receivers),
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len(signals.pre_delete.receivers),
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len(signals.post_delete.receivers),
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len(signals.pre_bulk_insert.receivers),
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len(signals.post_bulk_insert.receivers),
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)
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signals.pre_init.connect(Author.pre_init, sender=Author)
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signals.post_init.connect(Author.post_init, sender=Author)
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signals.pre_save.connect(Author.pre_save, sender=Author)
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signals.post_save.connect(Author.post_save, sender=Author)
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signals.pre_delete.connect(Author.pre_delete, sender=Author)
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signals.post_delete.connect(Author.post_delete, sender=Author)
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signals.pre_bulk_insert.connect(Author.pre_bulk_insert, sender=Author)
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signals.post_bulk_insert.connect(Author.post_bulk_insert, sender=Author)
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signals.pre_init.connect(Another.pre_init, sender=Another)
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signals.post_init.connect(Another.post_init, sender=Another)
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signals.pre_save.connect(Another.pre_save, sender=Another)
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signals.post_save.connect(Another.post_save, sender=Another)
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signals.pre_delete.connect(Another.pre_delete, sender=Another)
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signals.post_delete.connect(Another.post_delete, sender=Another)
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signals.post_save.connect(ExplicitId.post_save, sender=ExplicitId)
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def tearDown(self):
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signals.pre_init.disconnect(self.Author.pre_init)
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signals.post_init.disconnect(self.Author.post_init)
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signals.post_delete.disconnect(self.Author.post_delete)
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signals.pre_delete.disconnect(self.Author.pre_delete)
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signals.post_save.disconnect(self.Author.post_save)
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signals.pre_save.disconnect(self.Author.pre_save)
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signals.pre_bulk_insert.disconnect(self.Author.pre_bulk_insert)
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signals.post_bulk_insert.disconnect(self.Author.post_bulk_insert)
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signals.pre_init.disconnect(self.Another.pre_init)
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signals.post_init.disconnect(self.Another.post_init)
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signals.post_delete.disconnect(self.Another.post_delete)
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signals.pre_delete.disconnect(self.Another.pre_delete)
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signals.post_save.disconnect(self.Another.post_save)
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signals.pre_save.disconnect(self.Another.pre_save)
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signals.post_save.disconnect(self.ExplicitId.post_save)
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# Check that all our signals got disconnected properly.
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post_signals = (
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len(signals.pre_init.receivers),
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len(signals.post_init.receivers),
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len(signals.pre_save.receivers),
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len(signals.post_save.receivers),
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len(signals.pre_delete.receivers),
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len(signals.post_delete.receivers),
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len(signals.pre_bulk_insert.receivers),
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len(signals.post_bulk_insert.receivers),
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)
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self.ExplicitId.objects.delete()
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self.assertEqual(self.pre_signals, post_signals)
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def test_model_signals(self):
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""" Model saves should throw some signals. """
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def create_author():
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self.Author(name='Bill Shakespeare')
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def bulk_create_author_with_load():
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a1 = self.Author(name='Bill Shakespeare')
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self.Author.objects.insert([a1], load_bulk=True)
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def bulk_create_author_without_load():
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a1 = self.Author(name='Bill Shakespeare')
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self.Author.objects.insert([a1], load_bulk=False)
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self.assertEqual(self.get_signal_output(create_author), [
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"pre_init signal, Author",
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"{'name': 'Bill Shakespeare'}",
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"post_init signal, Bill Shakespeare",
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])
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a1 = self.Author(name='Bill Shakespeare')
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self.assertEqual(self.get_signal_output(a1.save), [
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"pre_save signal, Bill Shakespeare",
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"post_save signal, Bill Shakespeare",
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"Is created"
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])
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a1.reload()
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a1.name = 'William Shakespeare'
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self.assertEqual(self.get_signal_output(a1.save), [
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"pre_save signal, William Shakespeare",
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"post_save signal, William Shakespeare",
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"Is updated"
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])
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self.assertEqual(self.get_signal_output(a1.delete), [
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'pre_delete signal, William Shakespeare',
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'post_delete signal, William Shakespeare',
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])
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signal_output = self.get_signal_output(bulk_create_author_with_load)
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# The output of this signal is not entirely deterministic. The reloaded
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# object will have an object ID. Hence, we only check part of the output
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self.assertEqual(signal_output[3],
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"pre_bulk_insert signal, [<Author: Bill Shakespeare>]")
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self.assertEqual(signal_output[-2:],
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["post_bulk_insert signal, [<Author: Bill Shakespeare>]",
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"Is loaded",])
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self.assertEqual(self.get_signal_output(bulk_create_author_without_load), [
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"pre_init signal, Author",
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"{'name': 'Bill Shakespeare'}",
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"post_init signal, Bill Shakespeare",
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"pre_bulk_insert signal, [<Author: Bill Shakespeare>]",
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"post_bulk_insert signal, [<Author: Bill Shakespeare>]",
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"Not loaded",
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])
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self.Author.objects.delete()
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def test_signals_with_explicit_doc_ids(self):
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""" Model saves must have a created flag the first time."""
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ei = self.ExplicitId(id=123)
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# post save must received the created flag, even if there's already
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# an object id present
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self.assertEqual(self.get_signal_output(ei.save), ['Is created'])
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# second time, it must be an update
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self.assertEqual(self.get_signal_output(ei.save), ['Is updated'])
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if __name__ == '__main__':
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unittest.main()
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