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.
130 lines
3.4 KiB
Python
130 lines
3.4 KiB
Python
import pytest
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import sqlalchemy as sa
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from sqlalchemy_utils import aggregated
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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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@aggregated(
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'categories.sub_categories.products',
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sa.Column(sa.Integer, default=0)
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)
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def product_count(self):
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return sa.func.count('1')
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categories = sa.orm.relationship('Category', backref='catalog')
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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_categories = sa.orm.relationship(
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'SubCategory', 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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products = sa.orm.relationship('Product', backref='sub_category')
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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.Numeric)
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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_factory(Product, SubCategory, Category, Catalog, session):
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def catalog_factory():
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product = Product()
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sub_category = SubCategory(
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products=[product]
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)
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category = Category(sub_categories=[sub_category])
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catalog = Catalog(categories=[category])
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session.add(catalog)
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return catalog
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return catalog_factory
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@pytest.mark.usefixtures('postgresql_dsn')
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class Test3LevelDeepOneToMany(object):
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def test_assigns_aggregates(self, session, catalog_factory):
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catalog = catalog_factory()
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session.commit()
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session.refresh(catalog)
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assert catalog.product_count == 1
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def catalog_factory(
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self,
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session,
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Product,
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SubCategory,
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Category,
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Catalog
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):
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product = Product()
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sub_category = SubCategory(
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products=[product]
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)
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category = Category(sub_categories=[sub_category])
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catalog = Catalog(categories=[category])
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session.add(catalog)
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return catalog
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def test_only_updates_affected_aggregates(
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self,
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session,
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catalog_factory,
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Product
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):
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catalog = catalog_factory()
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catalog2 = catalog_factory()
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session.commit()
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# force set catalog2 product_count to zero in order to check if it gets
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# updated when the other catalog's product count gets updated
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session.execute(
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'UPDATE catalog SET product_count = 0 WHERE id = %d'
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% catalog2.id
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)
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catalog.categories[0].sub_categories[0].products.append(
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Product()
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)
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session.commit()
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session.refresh(catalog)
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session.refresh(catalog2)
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assert catalog.product_count == 2
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assert catalog2.product_count == 0
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