809 lines
25 KiB
Python
809 lines
25 KiB
Python
# testing/fixtures.py
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# Copyright (C) 2005-2021 the SQLAlchemy authors and contributors
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# <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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import contextlib
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import re
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import sys
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import sqlalchemy as sa
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from . import assertions
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from . import config
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from . import schema
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from .entities import BasicEntity
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from .entities import ComparableEntity
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from .entities import ComparableMixin # noqa
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from .util import adict
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from .util import drop_all_tables_from_metadata
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from .. import event
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from .. import util
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from ..orm import declarative_base
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from ..orm import registry
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from ..orm.decl_api import DeclarativeMeta
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from ..schema import sort_tables_and_constraints
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@config.mark_base_test_class()
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class TestBase(object):
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# A sequence of requirement names matching testing.requires decorators
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__requires__ = ()
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# A sequence of dialect names to exclude from the test class.
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__unsupported_on__ = ()
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# If present, test class is only runnable for the *single* specified
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# dialect. If you need multiple, use __unsupported_on__ and invert.
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__only_on__ = None
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# A sequence of no-arg callables. If any are True, the entire testcase is
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# skipped.
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__skip_if__ = None
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# if True, the testing reaper will not attempt to touch connection
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# state after a test is completed and before the outer teardown
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# starts
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__leave_connections_for_teardown__ = False
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def assert_(self, val, msg=None):
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assert val, msg
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@config.fixture()
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def connection_no_trans(self):
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eng = getattr(self, "bind", None) or config.db
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with eng.connect() as conn:
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yield conn
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@config.fixture()
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def connection(self):
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global _connection_fixture_connection
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eng = getattr(self, "bind", None) or config.db
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conn = eng.connect()
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trans = conn.begin()
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_connection_fixture_connection = conn
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yield conn
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_connection_fixture_connection = None
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if trans.is_active:
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trans.rollback()
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# trans would not be active here if the test is using
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# the legacy @provide_metadata decorator still, as it will
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# run a close all connections.
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conn.close()
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@config.fixture()
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def registry(self, metadata):
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reg = registry(metadata=metadata)
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yield reg
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reg.dispose()
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@config.fixture()
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def future_connection(self, future_engine, connection):
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# integrate the future_engine and connection fixtures so
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# that users of the "connection" fixture will get at the
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# "future" connection
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yield connection
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@config.fixture()
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def future_engine(self):
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eng = getattr(self, "bind", None) or config.db
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with _push_future_engine(eng):
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yield
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@config.fixture()
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def testing_engine(self):
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from . import engines
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def gen_testing_engine(
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url=None,
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options=None,
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future=None,
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asyncio=False,
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transfer_staticpool=False,
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):
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if options is None:
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options = {}
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options["scope"] = "fixture"
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return engines.testing_engine(
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url=url,
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options=options,
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future=future,
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asyncio=asyncio,
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transfer_staticpool=transfer_staticpool,
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)
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yield gen_testing_engine
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engines.testing_reaper._drop_testing_engines("fixture")
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@config.fixture()
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def async_testing_engine(self, testing_engine):
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def go(**kw):
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kw["asyncio"] = True
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return testing_engine(**kw)
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return go
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@config.fixture()
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def metadata(self, request):
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"""Provide bound MetaData for a single test, dropping afterwards."""
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from ..sql import schema
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metadata = schema.MetaData()
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request.instance.metadata = metadata
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yield metadata
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del request.instance.metadata
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if (
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_connection_fixture_connection
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and _connection_fixture_connection.in_transaction()
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):
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trans = _connection_fixture_connection.get_transaction()
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trans.rollback()
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with _connection_fixture_connection.begin():
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drop_all_tables_from_metadata(
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metadata, _connection_fixture_connection
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)
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else:
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drop_all_tables_from_metadata(metadata, config.db)
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@config.fixture(
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params=[
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(rollback, second_operation, begin_nested)
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for rollback in (True, False)
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for second_operation in ("none", "execute", "begin")
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for begin_nested in (
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True,
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False,
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)
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]
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)
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def trans_ctx_manager_fixture(self, request, metadata):
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rollback, second_operation, begin_nested = request.param
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from sqlalchemy import Table, Column, Integer, func, select
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from . import eq_
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t = Table("test", metadata, Column("data", Integer))
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eng = getattr(self, "bind", None) or config.db
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t.create(eng)
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def run_test(subject, trans_on_subject, execute_on_subject):
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with subject.begin() as trans:
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if begin_nested:
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if not config.requirements.savepoints.enabled:
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config.skip_test("savepoints not enabled")
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if execute_on_subject:
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nested_trans = subject.begin_nested()
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else:
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nested_trans = trans.begin_nested()
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with nested_trans:
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if execute_on_subject:
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subject.execute(t.insert(), {"data": 10})
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else:
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trans.execute(t.insert(), {"data": 10})
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# for nested trans, we always commit/rollback on the
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# "nested trans" object itself.
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# only Session(future=False) will affect savepoint
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# transaction for session.commit/rollback
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if rollback:
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nested_trans.rollback()
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else:
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nested_trans.commit()
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if second_operation != "none":
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with assertions.expect_raises_message(
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sa.exc.InvalidRequestError,
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"Can't operate on closed transaction "
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"inside context "
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"manager. Please complete the context "
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"manager "
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"before emitting further commands.",
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):
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if second_operation == "execute":
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if execute_on_subject:
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subject.execute(
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t.insert(), {"data": 12}
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)
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else:
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trans.execute(t.insert(), {"data": 12})
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elif second_operation == "begin":
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if execute_on_subject:
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subject.begin_nested()
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else:
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trans.begin_nested()
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# outside the nested trans block, but still inside the
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# transaction block, we can run SQL, and it will be
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# committed
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if execute_on_subject:
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subject.execute(t.insert(), {"data": 14})
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else:
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trans.execute(t.insert(), {"data": 14})
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else:
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if execute_on_subject:
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subject.execute(t.insert(), {"data": 10})
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else:
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trans.execute(t.insert(), {"data": 10})
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if trans_on_subject:
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if rollback:
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subject.rollback()
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else:
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subject.commit()
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else:
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if rollback:
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trans.rollback()
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else:
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trans.commit()
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if second_operation != "none":
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with assertions.expect_raises_message(
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sa.exc.InvalidRequestError,
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"Can't operate on closed transaction inside "
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"context "
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"manager. Please complete the context manager "
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"before emitting further commands.",
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):
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if second_operation == "execute":
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if execute_on_subject:
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subject.execute(t.insert(), {"data": 12})
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else:
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trans.execute(t.insert(), {"data": 12})
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elif second_operation == "begin":
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if hasattr(trans, "begin"):
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trans.begin()
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else:
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subject.begin()
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elif second_operation == "begin_nested":
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if execute_on_subject:
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subject.begin_nested()
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else:
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trans.begin_nested()
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expected_committed = 0
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if begin_nested:
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# begin_nested variant, we inserted a row after the nested
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# block
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expected_committed += 1
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if not rollback:
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# not rollback variant, our row inserted in the target
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# block itself would be committed
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expected_committed += 1
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if execute_on_subject:
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eq_(
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subject.scalar(select(func.count()).select_from(t)),
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expected_committed,
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)
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else:
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with subject.connect() as conn:
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eq_(
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conn.scalar(select(func.count()).select_from(t)),
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expected_committed,
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)
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return run_test
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_connection_fixture_connection = None
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@contextlib.contextmanager
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def _push_future_engine(engine):
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from ..future.engine import Engine
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from sqlalchemy import testing
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facade = Engine._future_facade(engine)
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config._current.push_engine(facade, testing)
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yield facade
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config._current.pop(testing)
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class FutureEngineMixin(object):
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@config.fixture(autouse=True, scope="class")
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def _push_future_engine(self):
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eng = getattr(self, "bind", None) or config.db
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with _push_future_engine(eng):
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yield
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class TablesTest(TestBase):
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# 'once', None
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run_setup_bind = "once"
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# 'once', 'each', None
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run_define_tables = "once"
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# 'once', 'each', None
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run_create_tables = "once"
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# 'once', 'each', None
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run_inserts = "each"
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# 'each', None
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run_deletes = "each"
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# 'once', None
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run_dispose_bind = None
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bind = None
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_tables_metadata = None
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tables = None
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other = None
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sequences = None
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@config.fixture(autouse=True, scope="class")
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def _setup_tables_test_class(self):
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cls = self.__class__
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cls._init_class()
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cls._setup_once_tables()
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cls._setup_once_inserts()
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yield
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cls._teardown_once_metadata_bind()
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@config.fixture(autouse=True, scope="function")
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def _setup_tables_test_instance(self):
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self._setup_each_tables()
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self._setup_each_inserts()
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yield
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self._teardown_each_tables()
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@property
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def tables_test_metadata(self):
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return self._tables_metadata
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@classmethod
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def _init_class(cls):
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if cls.run_define_tables == "each":
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if cls.run_create_tables == "once":
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cls.run_create_tables = "each"
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assert cls.run_inserts in ("each", None)
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cls.other = adict()
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cls.tables = adict()
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cls.sequences = adict()
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cls.bind = cls.setup_bind()
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cls._tables_metadata = sa.MetaData()
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@classmethod
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def _setup_once_inserts(cls):
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if cls.run_inserts == "once":
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cls._load_fixtures()
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with cls.bind.begin() as conn:
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cls.insert_data(conn)
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@classmethod
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def _setup_once_tables(cls):
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if cls.run_define_tables == "once":
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cls.define_tables(cls._tables_metadata)
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if cls.run_create_tables == "once":
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cls._tables_metadata.create_all(cls.bind)
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cls.tables.update(cls._tables_metadata.tables)
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cls.sequences.update(cls._tables_metadata._sequences)
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def _setup_each_tables(self):
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if self.run_define_tables == "each":
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self.define_tables(self._tables_metadata)
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if self.run_create_tables == "each":
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self._tables_metadata.create_all(self.bind)
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self.tables.update(self._tables_metadata.tables)
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self.sequences.update(self._tables_metadata._sequences)
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elif self.run_create_tables == "each":
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self._tables_metadata.create_all(self.bind)
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def _setup_each_inserts(self):
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if self.run_inserts == "each":
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self._load_fixtures()
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with self.bind.begin() as conn:
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self.insert_data(conn)
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def _teardown_each_tables(self):
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if self.run_define_tables == "each":
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self.tables.clear()
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if self.run_create_tables == "each":
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drop_all_tables_from_metadata(self._tables_metadata, self.bind)
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self._tables_metadata.clear()
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elif self.run_create_tables == "each":
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drop_all_tables_from_metadata(self._tables_metadata, self.bind)
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# no need to run deletes if tables are recreated on setup
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if (
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self.run_define_tables != "each"
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and self.run_create_tables != "each"
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and self.run_deletes == "each"
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):
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with self.bind.begin() as conn:
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for table in reversed(
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[
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t
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for (t, fks) in sort_tables_and_constraints(
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self._tables_metadata.tables.values()
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)
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if t is not None
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]
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):
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try:
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conn.execute(table.delete())
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except sa.exc.DBAPIError as ex:
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util.print_(
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("Error emptying table %s: %r" % (table, ex)),
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file=sys.stderr,
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)
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@classmethod
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def _teardown_once_metadata_bind(cls):
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if cls.run_create_tables:
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drop_all_tables_from_metadata(cls._tables_metadata, cls.bind)
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if cls.run_dispose_bind == "once":
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cls.dispose_bind(cls.bind)
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cls._tables_metadata.bind = None
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if cls.run_setup_bind is not None:
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cls.bind = None
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@classmethod
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def setup_bind(cls):
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return config.db
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@classmethod
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def dispose_bind(cls, bind):
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if hasattr(bind, "dispose"):
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bind.dispose()
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elif hasattr(bind, "close"):
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bind.close()
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@classmethod
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def define_tables(cls, metadata):
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pass
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@classmethod
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def fixtures(cls):
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return {}
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@classmethod
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def insert_data(cls, connection):
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pass
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def sql_count_(self, count, fn):
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self.assert_sql_count(self.bind, fn, count)
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def sql_eq_(self, callable_, statements):
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self.assert_sql(self.bind, callable_, statements)
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@classmethod
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def _load_fixtures(cls):
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"""Insert rows as represented by the fixtures() method."""
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headers, rows = {}, {}
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for table, data in cls.fixtures().items():
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if len(data) < 2:
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continue
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if isinstance(table, util.string_types):
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table = cls.tables[table]
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headers[table] = data[0]
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rows[table] = data[1:]
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for table, fks in sort_tables_and_constraints(
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cls._tables_metadata.tables.values()
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):
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if table is None:
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continue
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if table not in headers:
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continue
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with cls.bind.begin() as conn:
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conn.execute(
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table.insert(),
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[
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dict(zip(headers[table], column_values))
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for column_values in rows[table]
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],
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)
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class RemovesEvents(object):
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@util.memoized_property
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def _event_fns(self):
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return set()
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def event_listen(self, target, name, fn, **kw):
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self._event_fns.add((target, name, fn))
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event.listen(target, name, fn, **kw)
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@config.fixture(autouse=True, scope="function")
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def _remove_events(self):
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yield
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for key in self._event_fns:
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event.remove(*key)
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_fixture_sessions = set()
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def fixture_session(**kw):
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kw.setdefault("autoflush", True)
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kw.setdefault("expire_on_commit", True)
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sess = sa.orm.Session(config.db, **kw)
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_fixture_sessions.add(sess)
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return sess
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def _close_all_sessions():
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# will close all still-referenced sessions
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sa.orm.session.close_all_sessions()
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_fixture_sessions.clear()
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def stop_test_class_inside_fixtures(cls):
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_close_all_sessions()
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sa.orm.clear_mappers()
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def after_test():
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if _fixture_sessions:
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_close_all_sessions()
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class ORMTest(TestBase):
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pass
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class MappedTest(TablesTest, assertions.AssertsExecutionResults):
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# 'once', 'each', None
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run_setup_classes = "once"
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# 'once', 'each', None
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run_setup_mappers = "each"
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classes = None
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@config.fixture(autouse=True, scope="class")
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def _setup_tables_test_class(self):
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cls = self.__class__
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cls._init_class()
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if cls.classes is None:
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|
cls.classes = adict()
|
|
|
|
cls._setup_once_tables()
|
|
cls._setup_once_classes()
|
|
cls._setup_once_mappers()
|
|
cls._setup_once_inserts()
|
|
|
|
yield
|
|
|
|
cls._teardown_once_class()
|
|
cls._teardown_once_metadata_bind()
|
|
|
|
@config.fixture(autouse=True, scope="function")
|
|
def _setup_tables_test_instance(self):
|
|
self._setup_each_tables()
|
|
self._setup_each_classes()
|
|
self._setup_each_mappers()
|
|
self._setup_each_inserts()
|
|
|
|
yield
|
|
|
|
sa.orm.session.close_all_sessions()
|
|
self._teardown_each_mappers()
|
|
self._teardown_each_classes()
|
|
self._teardown_each_tables()
|
|
|
|
@classmethod
|
|
def _teardown_once_class(cls):
|
|
cls.classes.clear()
|
|
|
|
@classmethod
|
|
def _setup_once_classes(cls):
|
|
if cls.run_setup_classes == "once":
|
|
cls._with_register_classes(cls.setup_classes)
|
|
|
|
@classmethod
|
|
def _setup_once_mappers(cls):
|
|
if cls.run_setup_mappers == "once":
|
|
cls.mapper = cls._generate_mapper()
|
|
cls._with_register_classes(cls.setup_mappers)
|
|
|
|
def _setup_each_mappers(self):
|
|
if self.run_setup_mappers == "each":
|
|
self.__class__.mapper = self._generate_mapper()
|
|
self._with_register_classes(self.setup_mappers)
|
|
|
|
def _setup_each_classes(self):
|
|
if self.run_setup_classes == "each":
|
|
self._with_register_classes(self.setup_classes)
|
|
|
|
@classmethod
|
|
def _generate_mapper(cls):
|
|
decl = registry()
|
|
return decl.map_imperatively
|
|
|
|
@classmethod
|
|
def _with_register_classes(cls, fn):
|
|
"""Run a setup method, framing the operation with a Base class
|
|
that will catch new subclasses to be established within
|
|
the "classes" registry.
|
|
|
|
"""
|
|
cls_registry = cls.classes
|
|
|
|
assert cls_registry is not None
|
|
|
|
class FindFixture(type):
|
|
def __init__(cls, classname, bases, dict_):
|
|
cls_registry[classname] = cls
|
|
type.__init__(cls, classname, bases, dict_)
|
|
|
|
class _Base(util.with_metaclass(FindFixture, object)):
|
|
pass
|
|
|
|
class Basic(BasicEntity, _Base):
|
|
pass
|
|
|
|
class Comparable(ComparableEntity, _Base):
|
|
pass
|
|
|
|
cls.Basic = Basic
|
|
cls.Comparable = Comparable
|
|
fn()
|
|
|
|
def _teardown_each_mappers(self):
|
|
# some tests create mappers in the test bodies
|
|
# and will define setup_mappers as None -
|
|
# clear mappers in any case
|
|
if self.run_setup_mappers != "once":
|
|
sa.orm.clear_mappers()
|
|
|
|
def _teardown_each_classes(self):
|
|
if self.run_setup_classes != "once":
|
|
self.classes.clear()
|
|
|
|
@classmethod
|
|
def setup_classes(cls):
|
|
pass
|
|
|
|
@classmethod
|
|
def setup_mappers(cls):
|
|
pass
|
|
|
|
|
|
class DeclarativeMappedTest(MappedTest):
|
|
run_setup_classes = "once"
|
|
run_setup_mappers = "once"
|
|
|
|
@classmethod
|
|
def _setup_once_tables(cls):
|
|
pass
|
|
|
|
@classmethod
|
|
def _with_register_classes(cls, fn):
|
|
cls_registry = cls.classes
|
|
|
|
class FindFixtureDeclarative(DeclarativeMeta):
|
|
def __init__(cls, classname, bases, dict_):
|
|
cls_registry[classname] = cls
|
|
DeclarativeMeta.__init__(cls, classname, bases, dict_)
|
|
|
|
class DeclarativeBasic(object):
|
|
__table_cls__ = schema.Table
|
|
|
|
_DeclBase = declarative_base(
|
|
metadata=cls._tables_metadata,
|
|
metaclass=FindFixtureDeclarative,
|
|
cls=DeclarativeBasic,
|
|
)
|
|
|
|
cls.DeclarativeBasic = _DeclBase
|
|
|
|
# sets up cls.Basic which is helpful for things like composite
|
|
# classes
|
|
super(DeclarativeMappedTest, cls)._with_register_classes(fn)
|
|
|
|
if cls._tables_metadata.tables and cls.run_create_tables:
|
|
cls._tables_metadata.create_all(config.db)
|
|
|
|
|
|
class ComputedReflectionFixtureTest(TablesTest):
|
|
run_inserts = run_deletes = None
|
|
|
|
__backend__ = True
|
|
__requires__ = ("computed_columns", "table_reflection")
|
|
|
|
regexp = re.compile(r"[\[\]\(\)\s`'\"]*")
|
|
|
|
def normalize(self, text):
|
|
return self.regexp.sub("", text).lower()
|
|
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
from .. import Integer
|
|
from .. import testing
|
|
from ..schema import Column
|
|
from ..schema import Computed
|
|
from ..schema import Table
|
|
|
|
Table(
|
|
"computed_default_table",
|
|
metadata,
|
|
Column("id", Integer, primary_key=True),
|
|
Column("normal", Integer),
|
|
Column("computed_col", Integer, Computed("normal + 42")),
|
|
Column("with_default", Integer, server_default="42"),
|
|
)
|
|
|
|
t = Table(
|
|
"computed_column_table",
|
|
metadata,
|
|
Column("id", Integer, primary_key=True),
|
|
Column("normal", Integer),
|
|
Column("computed_no_flag", Integer, Computed("normal + 42")),
|
|
)
|
|
|
|
if testing.requires.schemas.enabled:
|
|
t2 = Table(
|
|
"computed_column_table",
|
|
metadata,
|
|
Column("id", Integer, primary_key=True),
|
|
Column("normal", Integer),
|
|
Column("computed_no_flag", Integer, Computed("normal / 42")),
|
|
schema=config.test_schema,
|
|
)
|
|
|
|
if testing.requires.computed_columns_virtual.enabled:
|
|
t.append_column(
|
|
Column(
|
|
"computed_virtual",
|
|
Integer,
|
|
Computed("normal + 2", persisted=False),
|
|
)
|
|
)
|
|
if testing.requires.schemas.enabled:
|
|
t2.append_column(
|
|
Column(
|
|
"computed_virtual",
|
|
Integer,
|
|
Computed("normal / 2", persisted=False),
|
|
)
|
|
)
|
|
if testing.requires.computed_columns_stored.enabled:
|
|
t.append_column(
|
|
Column(
|
|
"computed_stored",
|
|
Integer,
|
|
Computed("normal - 42", persisted=True),
|
|
)
|
|
)
|
|
if testing.requires.schemas.enabled:
|
|
t2.append_column(
|
|
Column(
|
|
"computed_stored",
|
|
Integer,
|
|
Computed("normal * 42", persisted=True),
|
|
)
|
|
)
|