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import pytest
import sqlalchemy as sa
import sqlalchemy.orm
from sqlalchemy_utils.compat import _select_args
from sqlalchemy_utils.functions.sort_query import make_order_by_deterministic
from .. import assert_contains
@pytest.fixture
def Article(Base):
class Article(Base):
__tablename__ = 'article'
id = sa.Column(sa.Integer, primary_key=True)
author_id = sa.Column(sa.Integer, sa.ForeignKey('user.id'))
author = sa.orm.relationship('User')
return Article
@pytest.fixture
def User(Base, Article):
class User(Base):
__tablename__ = 'user'
id = sa.Column(sa.Integer, primary_key=True)
name = sa.Column(sa.Unicode)
email = sa.Column(sa.Unicode, unique=True)
email_lower = sa.orm.column_property(
sa.func.lower(name)
)
User.article_count = sa.orm.column_property(
sa.select(*_select_args(sa.func.count()))
.select_from(Article)
.where(Article.author_id == User.id)
.label('article_count')
)
return User
@pytest.fixture
def init_models(Article, User):
pass
class TestMakeOrderByDeterministic:
def test_column_property(self, session, User):
query = session.query(User).order_by(User.email_lower)
query = make_order_by_deterministic(query)
assert_contains('lower(user.name) AS lower_1', query)
assert_contains('lower_1, user.id ASC', query)
def test_unique_column(self, session, User):
query = session.query(User).order_by(User.email)
query = make_order_by_deterministic(query)
assert str(query).endswith('ORDER BY user.email')
def test_non_unique_column(self, session, User):
query = session.query(User).order_by(User.name)
query = make_order_by_deterministic(query)
assert_contains('ORDER BY user.name, user.id ASC', query)
def test_descending_order_by(self, session, User):
query = session.query(User).order_by(
sa.desc(User.name)
)
query = make_order_by_deterministic(query)
assert_contains('ORDER BY user.name DESC, user.id DESC', query)
def test_ascending_order_by(self, session, User):
query = session.query(User).order_by(
sa.asc(User.name)
)
query = make_order_by_deterministic(query)
assert_contains('ORDER BY user.name ASC, user.id ASC', query)
def test_string_order_by(self, session, User):
query = session.query(User).order_by('name')
query = make_order_by_deterministic(query)
assert_contains('ORDER BY user.name, user.id ASC', query)
def test_annotated_label(self, session, User):
query = session.query(User).order_by(User.article_count)
query = make_order_by_deterministic(query)
assert_contains('article_count, user.id ASC', query)
def test_annotated_label_with_descending_order(self, session, User):
query = session.query(User).order_by(
sa.desc(User.article_count)
)
query = make_order_by_deterministic(query)
assert_contains('ORDER BY article_count DESC, user.id DESC', query)
def test_query_without_order_by(self, session, User):
query = session.query(User)
query = make_order_by_deterministic(query)
assert 'ORDER BY user.id' in str(query)
def test_alias(self, session, User):
alias = sa.orm.aliased(User.__table__)
query = session.query(alias).order_by(alias.c.name)
query = make_order_by_deterministic(query)
assert str(query).endswith('ORDER BY user_1.name, user.id ASC')
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