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import pytest
import sqlalchemy as sa
import sqlalchemy.orm
from sqlalchemy_utils import get_type
from sqlalchemy_utils.compat import _select_args, get_scalar_subquery
@pytest.fixture
def User(Base):
class User(Base):
__tablename__ = 'user'
id = sa.Column(sa.Integer, primary_key=True)
return User
@pytest.fixture
def Article(Base, User):
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)
some_property = sa.orm.column_property(
sa.func.coalesce(id, 1)
)
return Article
class TestGetType:
def test_instrumented_attribute(self, Article):
assert isinstance(get_type(Article.id), sa.Integer)
def test_column_property(self, Article):
assert isinstance(get_type(Article.id.property), sa.Integer)
def test_column(self, Article):
assert isinstance(get_type(Article.__table__.c.id), sa.Integer)
def test_calculated_column_property(self, Article):
assert isinstance(get_type(Article.some_property), sa.Integer)
def test_relationship_property(self, Article, User):
assert get_type(Article.author) == User
def test_scalar_select(self, Article):
query = get_scalar_subquery(sa.select(*_select_args(Article.id)))
assert isinstance(get_type(query), sa.Integer)
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