deb-python-sqlalchemy-utils/tests/functions/test_get_type.py

50 lines
1.3 KiB
Python

import pytest
import sqlalchemy as sa
from sqlalchemy_utils import get_type
@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(object):
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 = sa.select([Article.id]).as_scalar()
assert isinstance(get_type(query), sa.Integer)