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import sqlalchemy as sa
from sqlalchemy_utils.functions import (
mock_engine,
render_expression,
render_statement
)
from tests import TestCase
class TestRender(TestCase):
def create_models(self):
class User(self.Base):
__tablename__ = 'user'
id = sa.Column(sa.Integer, autoincrement=True, primary_key=True)
name = sa.Column(sa.Unicode(255))
self.User = User
def test_render_orm_query(self):
query = self.session.query(self.User).filter_by(id=3)
text = render_statement(query)
assert 'SELECT user.id, user.name' in text
assert 'FROM user' in text
assert 'WHERE user.id = 3' in text
def test_render_statement(self):
statement = self.User.__table__.select().where(self.User.id == 3)
text = render_statement(statement, bind=self.session.bind)
assert 'SELECT user.id, user.name' in text
assert 'FROM user' in text
assert 'WHERE user.id = 3' in text
def test_render_statement_without_mapper(self):
statement = sa.select([sa.text('1')])
text = render_statement(statement, bind=self.session.bind)
assert 'SELECT 1' in text
def test_render_ddl(self):
expression = 'self.User.__table__.create(engine)'
stream = render_expression(expression, self.engine)
text = stream.getvalue()
assert 'CREATE TABLE user' in text
assert 'PRIMARY KEY' in text
def test_render_mock_ddl(self):
with mock_engine('self.engine') as stream:
self.User.__table__.create(self.engine)
text = stream.getvalue()
assert 'CREATE TABLE user' in text
assert 'PRIMARY KEY' in text
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