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import pytest
import sqlalchemy as sa
from sqlalchemy_utils import get_tables
from sqlalchemy_utils.functions.orm import _get_query_compile_state
@pytest.fixture
def TextItem(Base):
class TextItem(Base):
__tablename__ = 'text_item'
id = sa.Column(sa.Integer, primary_key=True)
name = sa.Column(sa.Unicode(255))
type = sa.Column(sa.Unicode(255))
__mapper_args__ = {
'polymorphic_on': type,
'with_polymorphic': '*'
}
return TextItem
@pytest.fixture
def Article(TextItem):
class Article(TextItem):
__tablename__ = 'article'
id = sa.Column(
sa.Integer, sa.ForeignKey(TextItem.id), primary_key=True
)
__mapper_args__ = {
'polymorphic_identity': 'article'
}
return Article
@pytest.fixture
def init_models(TextItem, Article):
pass
class TestGetTables:
def test_child_class_using_join_table_inheritance(self, TextItem, Article):
assert get_tables(Article) == [
TextItem.__table__,
Article.__table__
]
def test_entity_using_with_polymorphic(self, TextItem, Article):
assert get_tables(TextItem) == [
TextItem.__table__,
Article.__table__
]
def test_instrumented_attribute(self, TextItem):
assert get_tables(TextItem.name) == [
TextItem.__table__,
]
def test_polymorphic_instrumented_attribute(self, TextItem, Article):
assert get_tables(Article.id) == [
TextItem.__table__,
Article.__table__
]
def test_column(self, Article):
assert get_tables(Article.__table__.c.id) == [
Article.__table__
]
def test_mapper_entity_with_class(self, session, TextItem, Article):
query = session.query(Article)
entity = _get_query_compile_state(query)._entities[0]
assert get_tables(entity) == [TextItem.__table__, Article.__table__]
def test_mapper_entity_with_mapper(self, session, TextItem, Article):
query = session.query(sa.inspect(Article))
entity = _get_query_compile_state(query)._entities[0]
assert get_tables(entity) == [TextItem.__table__, Article.__table__]
def test_column_entity(self, session, TextItem, Article):
query = session.query(Article.id)
entity = _get_query_compile_state(query)._entities[0]
assert get_tables(entity) == [TextItem.__table__, Article.__table__]
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