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.
99 lines
2.6 KiB
Python
99 lines
2.6 KiB
Python
import pytest
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import sqlalchemy as sa
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from sqlalchemy_utils.observer import observes
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@pytest.fixture
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def Catalog(Base):
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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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product_price = sa.Column(sa.Integer)
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@observes('category.sub_category.product')
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def product_observer(self, product):
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self.product_price = product.price if product else None
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category = sa.orm.relationship(
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'Category',
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uselist=False,
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backref='catalog'
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)
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return Catalog
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@pytest.fixture
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def Category(Base):
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class Category(Base):
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__tablename__ = 'category'
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id = sa.Column(sa.Integer, primary_key=True)
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catalog_id = sa.Column(sa.Integer, sa.ForeignKey('catalog.id'))
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sub_category = sa.orm.relationship(
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'SubCategory',
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uselist=False,
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backref='category'
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)
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return Category
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@pytest.fixture
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def SubCategory(Base):
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class SubCategory(Base):
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__tablename__ = 'sub_category'
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id = sa.Column(sa.Integer, primary_key=True)
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category_id = sa.Column(sa.Integer, sa.ForeignKey('category.id'))
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product = sa.orm.relationship(
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'Product',
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uselist=False,
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backref='sub_category'
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)
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return SubCategory
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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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price = sa.Column(sa.Integer)
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sub_category_id = sa.Column(
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sa.Integer, sa.ForeignKey('sub_category.id')
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)
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return Product
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@pytest.fixture
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def init_models(Catalog, Category, SubCategory, Product):
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pass
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@pytest.fixture
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def catalog(session, Catalog, Category, SubCategory, Product):
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sub_category = SubCategory(product=Product(price=123))
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category = Category(sub_category=sub_category)
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catalog = Catalog(category=category)
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session.add(catalog)
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session.flush()
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return catalog
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@pytest.mark.usefixtures('postgresql_dsn')
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class TestObservesForOneToOneToOneToOne(object):
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def test_simple_insert(self, catalog):
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assert catalog.product_price == 123
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def test_replace_leaf_object(self, catalog, session, Product):
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product = Product(price=44)
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catalog.category.sub_category.product = product
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session.flush()
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assert catalog.product_price == 44
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def test_delete_leaf_object(self, catalog, session):
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session.delete(catalog.category.sub_category.product)
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session.flush()
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assert catalog.product_price is None
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