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import pytest
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql
from sqlalchemy_utils import Asterisk, row_to_json
from sqlalchemy_utils.compat import _declarative_base
@pytest.fixture
def assert_startswith(session):
def assert_startswith(query, query_part):
assert str(
query.compile(dialect=postgresql.dialect())
).startswith(query_part)
# Check that query executes properly
session.execute(query)
return assert_startswith
@pytest.fixture
def Article(Base):
class Article(Base):
__tablename__ = 'article'
id = sa.Column(sa.Integer, primary_key=True)
name = sa.Column(sa.Unicode(255))
content = sa.Column(sa.UnicodeText)
return Article
class TestAsterisk:
def test_with_table_object(self):
Base = _declarative_base()
class Article(Base):
__tablename__ = 'article'
id = sa.Column(sa.Integer, primary_key=True)
assert str(Asterisk(Article.__table__)) == 'article.*'
def test_with_quoted_identifier(self):
Base = _declarative_base()
class User(Base):
__tablename__ = 'user'
id = sa.Column(sa.Integer, primary_key=True)
assert str(Asterisk(User.__table__).compile(
dialect=postgresql.dialect()
)) == '"user".*'
class TestRowToJson:
def test_compiler_with_default_dialect(self):
assert str(row_to_json(sa.text('article.*'))) == (
'row_to_json(article.*)'
)
def test_compiler_with_postgresql(self):
assert str(row_to_json(sa.text('article.*')).compile(
dialect=postgresql.dialect()
)) == 'row_to_json(article.*)'
def test_type(self):
assert isinstance(
sa.func.row_to_json(sa.text('article.*')).type,
postgresql.JSON
)
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