815f07d6c1
Also: Allow override of database name and user in tests (important for me as I would have to mess with my PSQL and MySQL database users otherwise) Use dict.items instead of six.iteritems as it sporadically caused RuntimeError: dictionary changed size during iteration in Python 2.6 tests. Fix typo DNS to DSN Adds Python 3.5 to tox.ini Added an .editorconfig Import babel.dates in sqlalchemy_utils.i18n as an exception would be raised when using the latest versions of babel.
122 lines
3.1 KiB
Python
122 lines
3.1 KiB
Python
from decimal import Decimal
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import pytest
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import sqlalchemy as sa
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from sqlalchemy_utils.aggregates import aggregated
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@pytest.fixture
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def Product(Base):
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class Product(Base):
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__tablename__ = 'product'
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id = sa.Column(sa.Integer, primary_key=True)
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name = sa.Column(sa.Unicode(255))
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price = sa.Column(sa.Numeric)
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catalog_id = sa.Column(sa.Integer, sa.ForeignKey('catalog.id'))
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return Product
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@pytest.fixture
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def Catalog(Base, Product):
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class Catalog(Base):
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__tablename__ = 'catalog'
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id = sa.Column(sa.Integer, primary_key=True)
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name = sa.Column(sa.Unicode(255))
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type = sa.Column(sa.Unicode(255))
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__mapper_args__ = {
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'polymorphic_on': type
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}
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@aggregated('products', sa.Column(sa.Numeric, default=0))
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def net_worth(self):
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return sa.func.sum(Product.price)
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products = sa.orm.relationship('Product', backref='catalog')
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return Catalog
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@pytest.fixture
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def CostumeCatalog(Catalog):
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class CostumeCatalog(Catalog):
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__tablename__ = 'costume_catalog'
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id = sa.Column(
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sa.Integer, sa.ForeignKey(Catalog.id), primary_key=True
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)
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__mapper_args__ = {
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'polymorphic_identity': 'costumes',
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}
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return CostumeCatalog
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@pytest.fixture
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def CarCatalog(Catalog):
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class CarCatalog(Catalog):
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__tablename__ = 'car_catalog'
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id = sa.Column(
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sa.Integer, sa.ForeignKey(Catalog.id), primary_key=True
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)
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__mapper_args__ = {
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'polymorphic_identity': 'cars',
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}
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return CarCatalog
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@pytest.fixture
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def init_models(Product, Catalog, CostumeCatalog, CarCatalog):
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pass
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@pytest.mark.usefixtures('postgresql_dsn')
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class TestLazyEvaluatedSelectExpressionsForAggregates(object):
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def test_columns_inherited_from_parent(
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self,
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Catalog,
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CarCatalog,
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CostumeCatalog
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):
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assert CarCatalog.net_worth
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assert CostumeCatalog.net_worth
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assert Catalog.net_worth
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assert not hasattr(CarCatalog.__table__.c, 'net_worth')
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assert not hasattr(CostumeCatalog.__table__.c, 'net_worth')
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def test_assigns_aggregates_on_insert(self, session, Product, Catalog):
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catalog = Catalog(
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name=u'Some catalog'
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)
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session.add(catalog)
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session.commit()
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product = Product(
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name=u'Some product',
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price=Decimal('1000'),
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catalog=catalog
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)
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session.add(product)
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session.commit()
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session.refresh(catalog)
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assert catalog.net_worth == Decimal('1000')
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def test_assigns_aggregates_on_update(self, session, Catalog, Product):
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catalog = Catalog(
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name=u'Some catalog'
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)
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session.add(catalog)
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session.commit()
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product = Product(
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name=u'Some product',
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price=Decimal('1000'),
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catalog=catalog
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)
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session.add(product)
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session.commit()
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product.price = Decimal('500')
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session.commit()
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session.refresh(catalog)
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assert catalog.net_worth == Decimal('500')
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