335 lines
12 KiB
Python
335 lines
12 KiB
Python
import unittest
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import pymongo
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from mongoengine.queryset import QuerySet
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from mongoengine import *
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class QuerySetTest(unittest.TestCase):
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def setUp(self):
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connect(db='mongoenginetest')
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class Person(Document):
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name = StringField()
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age = IntField()
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self.Person = Person
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def test_initialisation(self):
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"""Ensure that CollectionManager is correctly initialised.
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"""
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self.assertTrue(isinstance(self.Person.objects, QuerySet))
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self.assertEqual(self.Person.objects._collection.name(),
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self.Person._meta['collection'])
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self.assertTrue(isinstance(self.Person.objects._collection,
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pymongo.collection.Collection))
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def test_transform_query(self):
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"""Ensure that the _transform_query function operates correctly.
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"""
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self.assertEqual(QuerySet._transform_query(name='test', age=30),
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{'name': 'test', 'age': 30})
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self.assertEqual(QuerySet._transform_query(age__lt=30),
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{'age': {'$lt': 30}})
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self.assertEqual(QuerySet._transform_query(age__gt=20, age__lt=50),
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{'age': {'$gt': 20, '$lt': 50}})
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self.assertEqual(QuerySet._transform_query(age=20, age__gt=50),
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{'age': 20})
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self.assertEqual(QuerySet._transform_query(friend__age__gte=30),
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{'friend.age': {'$gte': 30}})
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self.assertEqual(QuerySet._transform_query(name__exists=True),
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{'name': {'$exists': True}})
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def test_find(self):
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"""Ensure that a query returns a valid set of results.
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"""
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person1 = self.Person(name="User A", age=20)
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person1.save()
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person2 = self.Person(name="User B", age=30)
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person2.save()
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# Find all people in the collection
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people = self.Person.objects
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self.assertEqual(len(people), 2)
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results = list(people)
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self.assertTrue(isinstance(results[0], self.Person))
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self.assertTrue(isinstance(results[0].id, (pymongo.objectid.ObjectId,
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str, unicode)))
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self.assertEqual(results[0].name, "User A")
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self.assertEqual(results[0].age, 20)
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self.assertEqual(results[1].name, "User B")
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self.assertEqual(results[1].age, 30)
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# Use a query to filter the people found to just person1
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people = self.Person.objects(age=20)
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self.assertEqual(len(people), 1)
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person = people.next()
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self.assertEqual(person.name, "User A")
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self.assertEqual(person.age, 20)
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# Test limit
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people = list(self.Person.objects.limit(1))
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self.assertEqual(len(people), 1)
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self.assertEqual(people[0].name, 'User A')
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# Test skip
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people = list(self.Person.objects.skip(1))
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self.assertEqual(len(people), 1)
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self.assertEqual(people[0].name, 'User B')
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person3 = self.Person(name="User C", age=40)
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person3.save()
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# Test slice limit
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people = list(self.Person.objects[:2])
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self.assertEqual(len(people), 2)
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self.assertEqual(people[0].name, 'User A')
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self.assertEqual(people[1].name, 'User B')
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# Test slice skip
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people = list(self.Person.objects[1:])
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self.assertEqual(len(people), 2)
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self.assertEqual(people[0].name, 'User B')
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self.assertEqual(people[1].name, 'User C')
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# Test slice limit and skip
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people = list(self.Person.objects[1:2])
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self.assertEqual(len(people), 1)
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self.assertEqual(people[0].name, 'User B')
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def test_find_one(self):
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"""Ensure that a query using find_one returns a valid result.
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"""
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person1 = self.Person(name="User A", age=20)
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person1.save()
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person2 = self.Person(name="User B", age=30)
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person2.save()
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# Retrieve the first person from the database
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person = self.Person.objects.first()
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self.assertTrue(isinstance(person, self.Person))
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self.assertEqual(person.name, "User A")
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self.assertEqual(person.age, 20)
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# Use a query to filter the people found to just person2
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person = self.Person.objects(age=30).first()
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self.assertEqual(person.name, "User B")
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person = self.Person.objects(age__lt=30).first()
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self.assertEqual(person.name, "User A")
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# Use array syntax
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person = self.Person.objects[0]
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self.assertEqual(person.name, "User A")
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person = self.Person.objects[1]
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self.assertEqual(person.name, "User B")
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self.assertRaises(IndexError, self.Person.objects.__getitem__, 2)
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# Find a document using just the object id
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person = self.Person.objects.with_id(person1.id)
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self.assertEqual(person.name, "User A")
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def test_find_embedded(self):
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"""Ensure that an embedded document is properly returned from a query.
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"""
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class User(EmbeddedDocument):
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name = StringField()
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class BlogPost(Document):
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content = StringField()
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author = EmbeddedDocumentField(User)
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post = BlogPost(content='Had a good coffee today...')
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post.author = User(name='Test User')
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post.save()
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result = BlogPost.objects.first()
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self.assertTrue(isinstance(result.author, User))
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self.assertEqual(result.author.name, 'Test User')
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BlogPost.drop_collection()
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def test_delete(self):
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"""Ensure that documents are properly deleted from the database.
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"""
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self.Person(name="User A", age=20).save()
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self.Person(name="User B", age=30).save()
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self.Person(name="User C", age=40).save()
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self.assertEqual(len(self.Person.objects), 3)
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self.Person.objects(age__lt=30).delete()
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self.assertEqual(len(self.Person.objects), 2)
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self.Person.objects.delete()
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self.assertEqual(len(self.Person.objects), 0)
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def test_order_by(self):
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"""Ensure that QuerySets may be ordered.
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"""
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self.Person(name="User A", age=20).save()
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self.Person(name="User B", age=40).save()
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self.Person(name="User C", age=30).save()
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names = [p.name for p in self.Person.objects.order_by('-age')]
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self.assertEqual(names, ['User B', 'User C', 'User A'])
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names = [p.name for p in self.Person.objects.order_by('+age')]
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self.assertEqual(names, ['User A', 'User C', 'User B'])
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names = [p.name for p in self.Person.objects.order_by('age')]
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self.assertEqual(names, ['User A', 'User C', 'User B'])
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ages = [p.age for p in self.Person.objects.order_by('-name')]
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self.assertEqual(ages, [30, 40, 20])
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def test_item_frequencies(self):
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"""Ensure that item frequencies are properly generated from lists.
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"""
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class BlogPost(Document):
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hits = IntField()
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tags = ListField(StringField(), name='blogTags')
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BlogPost.drop_collection()
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BlogPost(hits=1, tags=['music', 'film', 'actors']).save()
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BlogPost(hits=2, tags=['music']).save()
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BlogPost(hits=3, tags=['music', 'actors']).save()
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f = BlogPost.objects.item_frequencies('tags')
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f = dict((key, int(val)) for key, val in f.items())
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self.assertEqual(set(['music', 'film', 'actors']), set(f.keys()))
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self.assertEqual(f['music'], 3)
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self.assertEqual(f['actors'], 2)
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self.assertEqual(f['film'], 1)
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# Ensure query is taken into account
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f = BlogPost.objects(hits__gt=1).item_frequencies('tags')
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f = dict((key, int(val)) for key, val in f.items())
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self.assertEqual(set(['music', 'actors']), set(f.keys()))
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self.assertEqual(f['music'], 2)
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self.assertEqual(f['actors'], 1)
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# Check that normalization works
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f = BlogPost.objects.item_frequencies('tags', normalize=True)
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self.assertAlmostEqual(f['music'], 3.0/6.0)
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self.assertAlmostEqual(f['actors'], 2.0/6.0)
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self.assertAlmostEqual(f['film'], 1.0/6.0)
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BlogPost.drop_collection()
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def test_average(self):
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"""Ensure that field can be averaged correctly.
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"""
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ages = [23, 54, 12, 94, 27]
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for i, age in enumerate(ages):
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self.Person(name='test%s' % i, age=age).save()
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avg = float(sum(ages)) / len(ages)
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self.assertAlmostEqual(int(self.Person.objects.average('age')), avg)
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self.Person(name='ageless person').save()
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self.assertEqual(int(self.Person.objects.average('age')), avg)
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def test_sum(self):
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"""Ensure that field can be summed over correctly.
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"""
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ages = [23, 54, 12, 94, 27]
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for i, age in enumerate(ages):
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self.Person(name='test%s' % i, age=age).save()
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self.assertEqual(int(self.Person.objects.sum('age')), sum(ages))
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self.Person(name='ageless person').save()
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self.assertEqual(int(self.Person.objects.sum('age')), sum(ages))
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def test_custom_manager(self):
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"""Ensure that custom QuerySetManager instances work as expected.
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"""
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class BlogPost(Document):
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tags = ListField(StringField())
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@queryset_manager
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def music_posts(queryset):
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return queryset(tags='music')
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BlogPost.drop_collection()
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post1 = BlogPost(tags=['music', 'film'])
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post1.save()
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post2 = BlogPost(tags=['music'])
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post2.save()
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post3 = BlogPost(tags=['film', 'actors'])
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post3.save()
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self.assertEqual([p.id for p in BlogPost.objects],
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[post1.id, post2.id, post3.id])
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self.assertEqual([p.id for p in BlogPost.music_posts],
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[post1.id, post2.id])
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BlogPost.drop_collection()
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def test_query_field_name(self):
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"""Ensure that the correct field name is used when querying.
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"""
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class Comment(EmbeddedDocument):
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content = StringField(name='commentContent')
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class BlogPost(Document):
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title = StringField(name='postTitle')
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comments = ListField(EmbeddedDocumentField(Comment),
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name='postComments')
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BlogPost.drop_collection()
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data = {'title': 'Post 1', 'comments': [Comment(content='test')]}
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BlogPost(**data).save()
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self.assertTrue('postTitle' in
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BlogPost.objects(title=data['title'])._query)
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self.assertFalse('title' in
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BlogPost.objects(title=data['title'])._query)
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self.assertEqual(len(BlogPost.objects(title=data['title'])), 1)
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self.assertTrue('postComments.commentContent' in
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BlogPost.objects(comments__content='test')._query)
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self.assertEqual(len(BlogPost.objects(comments__content='test')), 1)
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BlogPost.drop_collection()
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def test_query_value_conversion(self):
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"""Ensure that query values are properly converted when necessary.
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"""
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class BlogPost(Document):
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author = ReferenceField(self.Person)
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BlogPost.drop_collection()
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person = self.Person(name='test', age=30)
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person.save()
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post = BlogPost(author=person)
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post.save()
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# Test that query may be performed by providing a document as a value
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# while using a ReferenceField's name - the document should be
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# converted to an DBRef, which is legal, unlike a Document object
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post_obj = BlogPost.objects(author=person).first()
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self.assertEqual(post.id, post_obj.id)
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# Test that lists of values work when using the 'in', 'nin' and 'all'
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post_obj = BlogPost.objects(author__in=[person]).first()
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self.assertEqual(post.id, post_obj.id)
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BlogPost.drop_collection()
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def tearDown(self):
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self.Person.drop_collection()
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if __name__ == '__main__':
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unittest.main()
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