def test_list_item_dereference(self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User))
User.drop_collection()
Group.drop_collection()
for i in range(1, 51):
user = User(name="user %s" % i)
user.save()
group = Group(members=User.objects)
group.save()
group = Group(members=User.objects)
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
len(group_obj._data["members"])
self.assertEqual(q, 1)
len(group_obj.members)
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
User.drop_collection()
Group.drop_collection()
def test_list_item_dereference(self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User))
User.drop_collection()
Group.drop_collection()
for i in xrange(1, 51):
user = User(name="user %s" % i)
user.save()
group = Group(members=User.objects)
group.save()
group = Group(members=User.objects)
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
len(group_obj._data["members"])
self.assertEqual(q, 1)
len(group_obj.members)
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
User.drop_collection()
Group.drop_collection()
def test_list_item_dereference_dref_false(self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User, dbref=False))
User.drop_collection()
Group.drop_collection()
for i in range(1, 51):
user = User(name="user %s" % i)
user.save()
group = Group(members=User.objects)
group.save()
group.reload() # Confirm reload works
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data["members"]._dereferenced)
# verifies that no additional queries gets executed
# if we re-iterate over the ListField once it is
# dereferenced
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data["members"]._dereferenced)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
def test_list_item_dereference_dref_false(self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User, dbref=False))
User.drop_collection()
Group.drop_collection()
for i in range(1, 51):
user = User(name='user %s' % i)
user.save()
group = Group(members=User.objects)
group.save()
group.reload() # Confirm reload works
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data['members']._dereferenced)
# verifies that no additional queries gets executed
# if we re-iterate over the ListField once it is
# dereferenced
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data['members']._dereferenced)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
def test_datetime(self):
resp = self.app.post(
"/datetime/",
data=json.dumps({
"datetime": "2010-01-01T00:00:00",
}),
)
response_success(resp)
datetime = resp_json(resp)
self.assertEqual(datetime["datetime"], "2010-01-01T00:00:00")
with query_counter() as c:
resp = self.app.put(
"/datetime/%s/" % datetime["id"],
data=json.dumps({
"datetime": "2010-01-02T00:00:00",
}),
)
response_success(resp)
datetime = resp_json(resp)
self.assertEqual(datetime["datetime"], "2010-01-02T00:00:00")
self.assertEqual(c, 3) # query, update, query (reload)
with query_counter() as c:
resp = self.app.put(
"/datetime/%s/" % datetime["id"],
data=json.dumps({
"datetime": "2010-01-02T00:00:00",
}),
)
response_success(resp)
datetime = resp_json(resp)
self.assertEqual(datetime["datetime"], "2010-01-02T00:00:00")
# Ideally this would be one query since we're not modifying, but
# in the generic case the save method may have other side effects
# and we don't know if the object was modified, so we currently
# always reload.
self.assertEqual(c, 2) # 2x query (with reload)
# Same as above, with no body
with query_counter() as c:
resp = self.app.put("/datetime/%s/" % datetime["id"],
data=json.dumps({}))
response_success(resp)
datetime = resp_json(resp)
self.assertEqual(datetime["datetime"], "2010-01-02T00:00:00")
self.assertEqual(c, 2) # 2x query (with reload)
def test_list_item_dereference_dref_false(self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User, dbref=False))
User.drop_collection()
Group.drop_collection()
for i in xrange(1, 51):
user = User(name='user %s' % i)
user.save()
group = Group(members=User.objects)
group.save()
group.reload() # Confirm reload works
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
User.drop_collection()
Group.drop_collection()
def test_list_item_dereference_dref_true_save_doesnt_cause_extra_queries(
self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
name = StringField()
members = ListField(ReferenceField(User, dbref=True))
User.drop_collection()
Group.drop_collection()
for i in range(1, 51):
User(name='user %s' % i).save()
Group(name="Test", members=User.objects).save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
group_obj.name = "new test"
group_obj.save()
self.assertEqual(q, 2)
def test_collision(self):
"""
Make sure that the right object is returned, even in case of a hash
collision.
"""
faux_obj = self.BlogPost.objects.get(title='Second Title')
with query_counter() as q:
obj1 = self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
# manually override the data in First Post's cache_key to point to
# the Second Title's object, simulating a collision
cache_key, flag_key = self.mongo_cache.get_keys(
self.BlogPost, 'title', 'First Title')
self.mongo_cache.redis.set(cache_key,
self.mongo_cache.serialize(faux_obj))
obj2 = self.mongo_cache.get(
self.BlogPost, 'title', 'First Title'
) # this should return the valid obj and invalidate the cache
obj3 = self.mongo_cache.get(
self.BlogPost, 'title',
'First Title') # this should cache the right obj
obj4 = self.mongo_cache.get(
self.BlogPost, 'title',
'First Title') # this should already have the valid obj cached
self.assertEqual(obj1, obj2)
self.assertEqual(obj1, obj3)
self.assertEqual(obj1, obj4)
self.assertEqual(
q, 3
) # 1st query + query after a cache collision + query that cached the right obj
def test_select_related_follows_embedded_referencefields(self):
class Song(Document):
title = StringField()
class PlaylistItem(EmbeddedDocument):
song = ReferenceField("Song")
class Playlist(Document):
items = ListField(EmbeddedDocumentField("PlaylistItem"))
Playlist.drop_collection()
Song.drop_collection()
songs = [Song.objects.create(title="song %d" % i) for i in range(3)]
items = [PlaylistItem(song=song) for song in songs]
playlist = Playlist.objects.create(items=items)
with query_counter() as q:
self.assertEqual(q, 0)
playlist = Playlist.objects.first().select_related()
songs = [item.song for item in playlist.items]
self.assertEqual(q, 2)
def test_list_item_dereference_dref_true_save_doesnt_cause_extra_queries(self):
"""Ensure that DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
name = StringField()
members = ListField(ReferenceField(User, dbref=True))
User.drop_collection()
Group.drop_collection()
for i in xrange(1, 51):
User(name='user %s' % i).save()
Group(name="Test", members=User.objects).save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
group_obj.name = "new test"
group_obj.save()
self.assertEqual(q, 2)
def test_collision(self):
"""
Make sure that the right object is returned, even in case of a hash
collision.
"""
faux_obj = self.BlogPost.objects.get(title='Second Title')
with query_counter() as q:
obj1 = self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
# manually override the data in First Post's cache_key to point to
# the Second Title's object, simulating a collision
cache_key, flag_key = self.mongo_cache.get_keys(
self.BlogPost,'title', 'First Title'
)
self.mongo_cache.redis.set(
cache_key,
self.mongo_cache.serialize(faux_obj)
)
obj2 = self.mongo_cache.get(self.BlogPost, 'title', 'First Title') # this should return the valid obj and invalidate the cache
obj3 = self.mongo_cache.get(self.BlogPost, 'title', 'First Title') # this should cache the right obj
obj4 = self.mongo_cache.get(self.BlogPost, 'title', 'First Title') # this should already have the valid obj cached
self.assertEqual(obj1, obj2)
self.assertEqual(obj1, obj3)
self.assertEqual(obj1, obj4)
self.assertEqual(q, 3) # 1st query + query after a cache collision + query that cached the right obj
def test_query_counter(self):
connect('mongoenginetest')
db = get_db()
collection = db.query_counter
collection.drop()
def issue_1_count_query():
collection.find({}).count()
def issue_1_insert_query():
collection.insert_one({'test': 'garbage'})
def issue_1_find_query():
collection.find_one()
counter = 0
with query_counter() as q:
self.assertEqual(q, counter)
self.assertEqual(q, counter) # Ensures previous count query did not get counted
for _ in range(10):
issue_1_insert_query()
counter += 1
self.assertEqual(q, counter)
for _ in range(4):
issue_1_find_query()
counter += 1
self.assertEqual(q, counter)
for _ in range(3):
issue_1_count_query()
counter += 1
self.assertEqual(q, counter)
def test_select_related_follows_embedded_referencefields(self):
class Song(Document):
title = StringField()
class PlaylistItem(EmbeddedDocument):
song = ReferenceField("Song")
class Playlist(Document):
items = ListField(EmbeddedDocumentField("PlaylistItem"))
Playlist.drop_collection()
Song.drop_collection()
songs = [Song.objects.create(title="song %d" % i) for i in range(3)]
items = [PlaylistItem(song=song) for song in songs]
playlist = Playlist.objects.create(items=items)
with query_counter() as q:
self.assertEqual(q, 0)
playlist = Playlist.objects.first().select_related()
songs = [item.song for item in playlist.items]
self.assertEqual(q, 2)
def test_datetime(self):
resp = self.app.post('/datetime/',
data=json.dumps({
'datetime': '2010-01-01T00:00:00',
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-01T00:00:00+00:00')
with query_counter() as c:
resp = self.app.put('/datetime/%s/' % datetime['id'],
data=json.dumps({
'datetime':
'2010-01-02T00:00:00',
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-02T00:00:00+00:00')
self.assertEqual(c, 3) # query, update, query (reload)
with query_counter() as c:
resp = self.app.put('/datetime/%s/' % datetime['id'],
data=json.dumps({
'datetime':
'2010-01-02T00:00:00',
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-02T00:00:00+00:00')
# Ideally this would be one query since we're not modifying, but
# in the generic case the save method may have other side effects
# and we don't know if the object was modified, so we currently
# always reload.
self.assertEqual(c, 2) # 2x query (with reload)
# Same as above, with no body
with query_counter() as c:
resp = self.app.put('/datetime/%s/' % datetime['id'],
data=json.dumps({}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-02T00:00:00+00:00')
self.assertEqual(c, 2) # 2x query (with reload)
def test_query_counter_alias(self):
"""query_counter works properly with db aliases?"""
clear_document_registry()
# Register a connection with db_alias testdb-1
register_connection("testdb-1", "mongoenginetest2")
class A(Document):
"""Uses default db_alias"""
name = StringField()
class B(Document):
"""Uses testdb-1 db_alias"""
name = StringField()
meta = {"db_alias": "testdb-1"}
A.drop_collection()
B.drop_collection()
with query_counter() as q:
assert q == 0
A.objects.create(name="A")
assert q == 1
a = A.objects.first()
assert q == 2
a.name = "Test A"
a.save()
assert q == 3
# querying the other db should'nt alter the counter
B.objects().first()
assert q == 3
with query_counter(alias="testdb-1") as q:
assert q == 0
B.objects.create(name="B")
assert q == 1
b = B.objects.first()
assert q == 2
b.name = "Test B"
b.save()
assert b.name == "Test B"
assert q == 3
# querying the other db should'nt alter the counter
A.objects().first()
assert q == 3
def test_generic_reference_orphan_dbref(self):
"""Ensure that generic orphan DBRef items in ListFields are dereferenced.
"""
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
members = ListField(GenericReferenceField())
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in range(1, 51):
a = UserA(name='User A %s' % i)
a.save()
b = UserB(name='User B %s' % i)
b.save()
c = UserC(name='User C %s' % i)
c.save()
members += [a, b, c]
group = Group(members=members)
group.save()
# Delete one UserA instance so that there is
# an orphan DBRef in the GenericReference ListField
UserA.objects[0].delete()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 4)
self.assertTrue(group_obj._data['members']._dereferenced)
[m for m in group_obj.members]
self.assertEqual(q, 4)
self.assertTrue(group_obj._data['members']._dereferenced)
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
def test_generic_reference_orphan_dbref(self):
"""Ensure that generic orphan DBRef items in ListFields are dereferenced.
"""
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
members = ListField(GenericReferenceField())
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in range(1, 51):
a = UserA(name="User A %s" % i)
a.save()
b = UserB(name="User B %s" % i)
b.save()
c = UserC(name="User C %s" % i)
c.save()
members += [a, b, c]
group = Group(members=members)
group.save()
# Delete one UserA instance so that there is
# an orphan DBRef in the GenericReference ListField
UserA.objects[0].delete()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 4)
self.assertTrue(group_obj._data["members"]._dereferenced)
[m for m in group_obj.members]
self.assertEqual(q, 4)
self.assertTrue(group_obj._data["members"]._dereferenced)
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
def test_invalidate(self):
"""Make sure simple cache invalidation works."""
with query_counter() as q:
self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.mongo_cache.invalidate(self.BlogPost, 'title', 'First Title')
bp = self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.mongo_cache.invalidate(bp.__class__, 'title', bp.title)
self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.assertEqual(q, 3)
def test_invalidate(self):
"""Make sure simple cache invalidation works."""
with query_counter() as q:
self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.mongo_cache.invalidate(self.BlogPost, 'title', 'First Title')
bp = self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.mongo_cache.invalidate(bp.__class__, 'title', bp.title)
self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.assertEqual(q, 3)
def test_datetime(self):
resp = self.app.post('/datetime/', data=json.dumps({
'datetime': '2010-01-01T00:00:00',
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-01T00:00:00+00:00')
with query_counter() as c:
resp = self.app.put('/datetime/%s/' % datetime['id'], data=json.dumps({
'datetime': '2010-01-02T00:00:00',
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-02T00:00:00+00:00')
self.assertEqual(c, 3) # query, update, query (reload)
with query_counter() as c:
resp = self.app.put('/datetime/%s/' % datetime['id'], data=json.dumps({
'datetime': '2010-01-02T00:00:00',
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-02T00:00:00+00:00')
# Ideally this would be one query since we're not modifying, but
# in the generic case the save method may have other side effects
# and we don't know if the object was modified, so we currently
# always reload.
self.assertEqual(c, 2) # 2x query (with reload)
# Same as above, with no body
with query_counter() as c:
resp = self.app.put('/datetime/%s/' % datetime['id'], data=json.dumps({
}))
response_success(resp)
datetime = json.loads(resp.data)
self.assertEqual(datetime['datetime'], '2010-01-02T00:00:00+00:00')
self.assertEqual(c, 2) # 2x query (with reload)
def test_query_counter(self):
connect('mongoenginetest')
db = get_db()
db.test.find({})
with query_counter() as q:
self.assertEqual(0, q)
for i in xrange(1, 51):
db.test.find({}).count()
self.assertEqual(50, q)
def test_query_counter(self):
connect('mongoenginetest')
db = get_db()
db.test.find({})
with query_counter() as q:
self.assertEqual(0, q)
for i in range(1, 51):
db.test.find({}).count()
self.assertEqual(50, q)
def test_query_counter_counts_getmore_queries(self):
connect('mongoenginetest')
db = get_db()
collection = db.query_counter
collection.drop()
many_docs = [{'test': 'garbage %s' % i} for i in range(150)]
collection.insert_many(many_docs) # first batch of documents contains 101 documents
with query_counter() as q:
self.assertEqual(q, 0)
list(collection.find())
self.assertEqual(q, 2) # 1st select + 1 getmore
def test_get_db_queries(self):
"""
Make sure consecutive calls to mongo_cache.get don't hit the database
for the same doc.
"""
with query_counter() as q:
for i in range(3):
self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.mongo_cache.get(self.BlogPost, 'title', 'Second Title')
# Only 2 queries to Mongo should be performed - one for caching
# First Title and one for Second Title
self.assertEqual(q, 2)
def test_query_counter_counts_getmore_queries(self):
connect('mongoenginetest')
db = get_db()
collection = db.query_counter
collection.drop()
many_docs = [{'test': 'garbage %s' % i} for i in range(150)]
collection.insert_many(many_docs) # first batch of documents contains 101 documents
with query_counter() as q:
self.assertEqual(q, 0)
list(collection.find())
self.assertEqual(q, 2) # 1st select + 1 getmore
def test_get_db_queries(self):
"""
Make sure consecutive calls to mongo_cache.get don't hit the database
for the same doc.
"""
with query_counter() as q:
for i in range(3):
self.mongo_cache.get(self.BlogPost, 'title', 'First Title')
self.mongo_cache.get(self.BlogPost, 'title', 'Second Title')
# Only 2 queries to Mongo should be performed - one for caching
# First Title and one for Second Title
self.assertEqual(q, 2)
def test_query_counter_counts_getmore_queries(self):
connect("mongoenginetest")
db = get_db()
collection = db.query_counter
collection.drop()
many_docs = [{"test": "garbage %s" % i} for i in range(150)]
collection.insert_many(
many_docs) # first batch of documents contains 101 documents
with query_counter() as q:
assert q == 0
list(collection.find())
assert q == 2 # 1st select + 1 getmore
def test_model_instance_dereference(self):
class TestDocument(Document):
user = ModelField()
timestamp = DateTimeField(required=True, default=timezone.now)
TestDocument.drop_collection()
document = TestDocument(user=self.user)
document.save()
with query_counter() as count:
self.assertEqual(count, 0)
instance = TestDocument.objects.order_by('-timestamp').first()
self.assertEqual(count, 1)
def test_query_counter_temporarily_modifies_profiling_level(self):
connect('mongoenginetest')
db = get_db()
initial_profiling_level = db.profiling_level()
try:
NEW_LEVEL = 1
db.set_profiling_level(NEW_LEVEL)
self.assertEqual(db.profiling_level(), NEW_LEVEL)
with query_counter() as q:
self.assertEqual(db.profiling_level(), 2)
self.assertEqual(db.profiling_level(), NEW_LEVEL)
except Exception:
db.set_profiling_level(initial_profiling_level) # Ensures it gets reseted no matter the outcome of the test
raise
def test_query_counter_temporarily_modifies_profiling_level(self):
connect('mongoenginetest')
db = get_db()
initial_profiling_level = db.profiling_level()
try:
NEW_LEVEL = 1
db.set_profiling_level(NEW_LEVEL)
self.assertEqual(db.profiling_level(), NEW_LEVEL)
with query_counter() as q:
self.assertEqual(db.profiling_level(), 2)
self.assertEqual(db.profiling_level(), NEW_LEVEL)
except Exception:
db.set_profiling_level(initial_profiling_level) # Ensures it gets reseted no matter the outcome of the test
raise
def test_query_counter_temporarily_modifies_profiling_level(self):
connect("mongoenginetest")
db = get_db()
initial_profiling_level = db.profiling_level()
try:
new_level = 1
db.set_profiling_level(new_level)
assert db.profiling_level() == new_level
with query_counter():
assert db.profiling_level() == 2
assert db.profiling_level() == new_level
except Exception:
db.set_profiling_level(
initial_profiling_level
) # Ensures it gets reseted no matter the outcome of the test
raise
def test_query_counter_ignores_particular_queries(self):
connect('mongoenginetest')
db = get_db()
collection = db.query_counter
collection.insert_many([{'test': 'garbage %s' % i} for i in range(10)])
with query_counter() as q:
self.assertEqual(q, 0)
cursor = collection.find()
self.assertEqual(q, 0) # cursor wasn't opened yet
_ = next(cursor) # opens the cursor and fires the find query
self.assertEqual(q, 1)
cursor.close() # issues a `killcursors` query that is ignored by the context
self.assertEqual(q, 1)
_ = db.system.indexes.find_one() # queries on db.system.indexes are ignored as well
self.assertEqual(q, 1)
def test_query_counter_ignores_particular_queries(self):
connect('mongoenginetest')
db = get_db()
collection = db.query_counter
collection.insert_many([{'test': 'garbage %s' % i} for i in range(10)])
with query_counter() as q:
self.assertEqual(q, 0)
cursor = collection.find()
self.assertEqual(q, 0) # cursor wasn't opened yet
_ = next(cursor) # opens the cursor and fires the find query
self.assertEqual(q, 1)
cursor.close() # issues a `killcursors` query that is ignored by the context
self.assertEqual(q, 1)
_ = db.system.indexes.find_one() # queries on db.system.indexes are ignored as well
self.assertEqual(q, 1)
def test_query_counter(self):
connect("mongoenginetest")
db = get_db()
collection = db.query_counter
collection.drop()
def issue_1_count_query():
count_documents(collection, {})
def issue_1_insert_query():
collection.insert_one({"test": "garbage"})
def issue_1_find_query():
collection.find_one()
counter = 0
with query_counter() as q:
self.assertEqual(q, counter)
self.assertEqual(
q, counter) # Ensures previous count query did not get counted
for _ in range(10):
issue_1_insert_query()
counter += 1
self.assertEqual(q, counter)
for _ in range(4):
issue_1_find_query()
counter += 1
self.assertEqual(q, counter)
for _ in range(3):
issue_1_count_query()
counter += 1
self.assertEqual(q, counter)
self.assertEqual(int(q), counter) # test __int__
self.assertEqual(repr(q), str(int(q))) # test __repr__
self.assertGreater(q, -1) # test __gt__
self.assertGreaterEqual(q, int(q)) # test __gte__
self.assertNotEqual(q, -1)
self.assertLess(q, 1000)
self.assertLessEqual(q, int(q))
def test_query_counter(self):
connect("mongoenginetest")
db = get_db()
collection = db.query_counter
collection.drop()
def issue_1_count_query():
count_documents(collection, {})
def issue_1_insert_query():
collection.insert_one({"test": "garbage"})
def issue_1_find_query():
collection.find_one()
counter = 0
with query_counter() as q:
assert q == counter
assert q == counter # Ensures previous count query did not get counted
for _ in range(10):
issue_1_insert_query()
counter += 1
assert q == counter
for _ in range(4):
issue_1_find_query()
counter += 1
assert q == counter
for _ in range(3):
issue_1_count_query()
counter += 1
assert q == counter
assert int(q) == counter # test __int__
assert repr(q) == str(int(q)) # test __repr__
assert q > -1 # test __gt__
assert q >= int(q) # test __gte__
assert q != -1
assert q < 1000
assert q <= int(q)
def test_lazy_reference_embedded_dereferencing(self):
# Test case for #2375
# -- Test documents
class Author(Document):
name = StringField()
class AuthorReference(EmbeddedDocument):
author = LazyReferenceField(Author)
class Book(Document):
authors = EmbeddedDocumentListField(AuthorReference)
# -- Cleanup
Author.drop_collection()
Book.drop_collection()
# -- Create test data
author_1 = Author(name="A1").save()
author_2 = Author(name="A2").save()
author_3 = Author(name="A3").save()
book = Book(
authors=[
AuthorReference(author=author_1),
AuthorReference(author=author_2),
AuthorReference(author=author_3),
]
).save()
with query_counter() as qc:
book = Book.objects.first()
# Accessing the list must not trigger dereferencing.
book.authors
assert qc == 1
for ref in book.authors:
with pytest.raises(AttributeError):
ref["author"].name
assert isinstance(ref.author, LazyReference)
assert isinstance(ref.author.id, ObjectId)
def test_list_item_dereference_orphan_dbref(self):
"""Ensure that orphan DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User, dbref=False))
User.drop_collection()
Group.drop_collection()
for i in range(1, 51):
user = User(name="user %s" % i)
user.save()
group = Group(members=User.objects)
group.save()
group.reload() # Confirm reload works
# Delete one User so one of the references in the
# Group.members list is an orphan DBRef
User.objects[0].delete()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data["members"]._dereferenced)
# verifies that no additional queries gets executed
# if we re-iterate over the ListField once it is
# dereferenced
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data["members"]._dereferenced)
User.drop_collection()
Group.drop_collection()
def test_list_item_dereference_orphan_dbref(self):
"""Ensure that orphan DBRef items in ListFields are dereferenced.
"""
class User(Document):
name = StringField()
class Group(Document):
members = ListField(ReferenceField(User, dbref=False))
User.drop_collection()
Group.drop_collection()
for i in range(1, 51):
user = User(name='user %s' % i)
user.save()
group = Group(members=User.objects)
group.save()
group.reload() # Confirm reload works
# Delete one User so one of the references in the
# Group.members list is an orphan DBRef
User.objects[0].delete()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data['members']._dereferenced)
# verifies that no additional queries gets executed
# if we re-iterate over the ListField once it is
# dereferenced
[m for m in group_obj.members]
self.assertEqual(q, 2)
self.assertTrue(group_obj._data['members']._dereferenced)
User.drop_collection()
Group.drop_collection()
def test_query_counter_ignores_particular_queries(self):
connect("mongoenginetest")
db = get_db()
collection = db.query_counter
collection.insert_many([{"test": "garbage %s" % i} for i in range(10)])
with query_counter() as q:
assert q == 0
cursor = collection.find()
assert q == 0 # cursor wasn't opened yet
_ = next(cursor) # opens the cursor and fires the find query
assert q == 1
cursor.close(
) # issues a `killcursors` query that is ignored by the context
assert q == 1
_ = (db.system.indexes.find_one()
) # queries on db.system.indexes are ignored as well
assert q == 1
def test_generic_reference_save_doesnt_cause_extra_queries(self):
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
name = StringField()
members = ListField(GenericReferenceField())
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in xrange(1, 51):
a = UserA(name='User A %s' % i).save()
b = UserB(name='User B %s' % i).save()
c = UserC(name='User C %s' % i).save()
members += [a, b, c]
Group(name="test", members=members).save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
group_obj.name = "new test"
group_obj.save()
self.assertEqual(q, 2)
def test_generic_reference_save_doesnt_cause_extra_queries(self):
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
name = StringField()
members = ListField(GenericReferenceField())
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in xrange(1, 51):
a = UserA(name='User A %s' % i).save()
b = UserB(name='User B %s' % i).save()
c = UserC(name='User C %s' % i).save()
members += [a, b, c]
Group(name="test", members=members).save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
group_obj.name = "new test"
group_obj.save()
self.assertEqual(q, 2)
def test_query_counter_temporarily_modifies_profiling_level(self):
connect("mongoenginetest")
db = get_db()
def _current_profiling_level():
return db.command({"profile": -1})["was"]
def _set_profiling_level(lvl):
db.command({"profile": lvl})
initial_profiling_level = _current_profiling_level()
try:
new_level = 1
_set_profiling_level(new_level)
assert _current_profiling_level() == new_level
with query_counter():
assert _current_profiling_level() == 2
assert _current_profiling_level() == new_level
except Exception:
_set_profiling_level(
initial_profiling_level
) # Ensures it gets reseted no matter the outcome of the test
raise
def test_dict_field(self):
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
members = DictField()
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in range(1, 51):
a = UserA(name='User A %s' % i)
a.save()
b = UserB(name='User B %s' % i)
b.save()
c = UserC(name='User C %s' % i)
c.save()
members += [a, b, c]
group = Group(members={str(u.id): u for u in members})
group.save()
group = Group(members={str(u.id): u for u in members})
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in group_obj.members.iteritems():
self.assertIn('User', m.__class__.__name__)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in group_obj.members.iteritems():
self.assertIn('User', m.__class__.__name__)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 4)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in group_obj.members.iteritems():
self.assertIn('User', m.__class__.__name__)
Group.objects.delete()
Group().save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 1)
self.assertEqual(group_obj.members, {})
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
def test_generic_reference_map_field(self):
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
members = MapField(GenericReferenceField())
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in xrange(1, 51):
a = UserA(name='User A %s' % i)
a.save()
b = UserB(name='User B %s' % i)
b.save()
c = UserC(name='User C %s' % i)
c.save()
members += [a, b, c]
group = Group(members=dict([(str(u.id), u) for u in members]))
group.save()
group = Group(members=dict([(str(u.id), u) for u in members]))
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in group_obj.members.iteritems():
self.assertTrue('User' in m.__class__.__name__)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in group_obj.members.iteritems():
self.assertTrue('User' in m.__class__.__name__)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 4)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in group_obj.members.iteritems():
self.assertTrue('User' in m.__class__.__name__)
Group.objects.delete()
Group().save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 1)
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
def test_dict_field_no_field_inheritance(self):
class UserA(Document):
name = StringField()
meta = {'allow_inheritance': False}
class Group(Document):
members = DictField()
UserA.drop_collection()
Group.drop_collection()
members = []
for i in xrange(1, 51):
a = UserA(name='User A %s' % i)
a.save()
members += [a]
group = Group(members=dict([(str(u.id), u) for u in members]))
group.save()
group = Group(members=dict([(str(u.id), u) for u in members]))
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in group_obj.members.iteritems():
self.assertTrue(isinstance(m, UserA))
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in group_obj.members.iteritems():
self.assertTrue(isinstance(m, UserA))
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in group_obj.members.iteritems():
self.assertTrue(isinstance(m, UserA))
UserA.drop_collection()
Group.drop_collection()
def test_map_field_reference(self):
class User(Document):
name = StringField()
class Group(Document):
members = MapField(ReferenceField(User))
User.drop_collection()
Group.drop_collection()
members = []
for i in xrange(1, 51):
user = User(name='user %s' % i)
user.save()
members.append(user)
group = Group(members=dict([(str(u.id), u) for u in members]))
group.save()
group = Group(members=dict([(str(u.id), u) for u in members]))
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in group_obj.members.iteritems():
self.assertTrue(isinstance(m, User))
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in group_obj.members.iteritems():
self.assertTrue(isinstance(m, User))
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in group_obj.members.iteritems():
self.assertTrue(isinstance(m, User))
User.drop_collection()
Group.drop_collection()
def test_list_field_complex(self):
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
members = ListField()
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in xrange(1, 51):
a = UserA(name='User A %s' % i)
a.save()
b = UserB(name='User B %s' % i)
b.save()
c = UserC(name='User C %s' % i)
c.save()
members += [a, b, c]
group = Group(members=members)
group.save()
group = Group(members=members)
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for m in group_obj.members:
self.assertTrue('User' in m.__class__.__name__)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for m in group_obj.members:
self.assertTrue('User' in m.__class__.__name__)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 4)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for m in group_obj.members:
self.assertTrue('User' in m.__class__.__name__)
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
def test_recursive_reference(self):
"""Ensure that ReferenceFields can reference their own documents.
"""
class Employee(Document):
name = StringField()
boss = ReferenceField('self')
friends = ListField(ReferenceField('self'))
Employee.drop_collection()
bill = Employee(name='Bill Lumbergh')
bill.save()
michael = Employee(name='Michael Bolton')
michael.save()
samir = Employee(name='Samir Nagheenanajar')
samir.save()
friends = [michael, samir]
peter = Employee(name='Peter Gibbons', boss=bill, friends=friends)
peter.save()
Employee(name='Funky Gibbon', boss=bill, friends=friends).save()
Employee(name='Funky Gibbon', boss=bill, friends=friends).save()
Employee(name='Funky Gibbon', boss=bill, friends=friends).save()
with query_counter() as q:
self.assertEqual(q, 0)
peter = Employee.objects.with_id(peter.id)
self.assertEqual(q, 1)
peter.boss
self.assertEqual(q, 2)
peter.friends
self.assertEqual(q, 3)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
peter = Employee.objects.with_id(peter.id).select_related()
self.assertEqual(q, 2)
self.assertEqual(peter.boss, bill)
self.assertEqual(q, 2)
self.assertEqual(peter.friends, friends)
self.assertEqual(q, 2)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
employees = Employee.objects(boss=bill).select_related()
self.assertEqual(q, 2)
for employee in employees:
self.assertEqual(employee.boss, bill)
self.assertEqual(q, 2)
self.assertEqual(employee.friends, friends)
self.assertEqual(q, 2)
def test_generic_reference_map_field(self):
class UserA(Document):
name = StringField()
class UserB(Document):
name = StringField()
class UserC(Document):
name = StringField()
class Group(Document):
members = MapField(GenericReferenceField())
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
members = []
for i in range(1, 51):
a = UserA(name='User A %s' % i)
a.save()
b = UserB(name='User B %s' % i)
b.save()
c = UserC(name='User C %s' % i)
c.save()
members += [a, b, c]
group = Group(members={str(u.id): u for u in members})
group.save()
group = Group(members={str(u.id): u for u in members})
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in iteritems(group_obj.members):
self.assertIn('User', m.__class__.__name__)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in iteritems(group_obj.members):
self.assertIn('User', m.__class__.__name__)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 4)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 4)
[m for m in group_obj.members]
self.assertEqual(q, 4)
for k, m in iteritems(group_obj.members):
self.assertIn('User', m.__class__.__name__)
Group.objects.delete()
Group().save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 1)
UserA.drop_collection()
UserB.drop_collection()
UserC.drop_collection()
Group.drop_collection()
def test_dict_field_no_field_inheritance(self):
class UserA(Document):
name = StringField()
meta = {'allow_inheritance': False}
class Group(Document):
members = DictField()
UserA.drop_collection()
Group.drop_collection()
members = []
for i in range(1, 51):
a = UserA(name='User A %s' % i)
a.save()
members += [a]
group = Group(members={str(u.id): u for u in members})
group.save()
group = Group(members={str(u.id): u for u in members})
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in iteritems(group_obj.members):
self.assertIsInstance(m, UserA)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in iteritems(group_obj.members):
self.assertIsInstance(m, UserA)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in iteritems(group_obj.members):
self.assertIsInstance(m, UserA)
UserA.drop_collection()
Group.drop_collection()
def test_map_field_reference(self):
class User(Document):
name = StringField()
class Group(Document):
members = MapField(ReferenceField(User))
User.drop_collection()
Group.drop_collection()
members = []
for i in range(1, 51):
user = User(name='user %s' % i)
user.save()
members.append(user)
group = Group(members={str(u.id): u for u in members})
group.save()
group = Group(members={str(u.id): u for u in members})
group.save()
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first()
self.assertEqual(q, 1)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in iteritems(group_obj.members):
self.assertIsInstance(m, User)
# Document select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_obj = Group.objects.first().select_related()
self.assertEqual(q, 2)
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in iteritems(group_obj.members):
self.assertIsInstance(m, User)
# Queryset select_related
with query_counter() as q:
self.assertEqual(q, 0)
group_objs = Group.objects.select_related()
self.assertEqual(q, 2)
for group_obj in group_objs:
[m for m in group_obj.members]
self.assertEqual(q, 2)
for k, m in iteritems(group_obj.members):
self.assertIsInstance(m, User)
User.drop_collection()
Group.drop_collection()
def test_query_counter_does_not_swallow_exception(self):
with self.assertRaises(TypeError):
with query_counter() as q:
raise TypeError()
