790 lines
21 KiB
Python
790 lines
21 KiB
Python
# plugin/plugin_base.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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"""Testing extensions.
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this module is designed to work as a testing-framework-agnostic library,
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created so that multiple test frameworks can be supported at once
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(mostly so that we can migrate to new ones). The current target
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is pytest.
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"""
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from __future__ import absolute_import
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import abc
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import logging
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import re
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import sys
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# flag which indicates we are in the SQLAlchemy testing suite,
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# and not that of Alembic or a third party dialect.
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bootstrapped_as_sqlalchemy = False
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log = logging.getLogger("sqlalchemy.testing.plugin_base")
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py3k = sys.version_info >= (3, 0)
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if py3k:
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import configparser
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ABC = abc.ABC
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else:
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import ConfigParser as configparser
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import collections as collections_abc # noqa
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class ABC(object):
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__metaclass__ = abc.ABCMeta
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# late imports
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fixtures = None
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engines = None
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exclusions = None
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warnings = None
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profiling = None
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provision = None
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assertions = None
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requirements = None
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config = None
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testing = None
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util = None
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file_config = None
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logging = None
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include_tags = set()
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exclude_tags = set()
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options = None
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def setup_options(make_option):
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make_option(
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"--log-info",
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action="callback",
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type=str,
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callback=_log,
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help="turn on info logging for <LOG> (multiple OK)",
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)
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make_option(
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"--log-debug",
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action="callback",
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type=str,
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callback=_log,
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help="turn on debug logging for <LOG> (multiple OK)",
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)
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make_option(
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"--db",
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action="append",
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type=str,
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dest="db",
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help="Use prefab database uri. Multiple OK, "
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"first one is run by default.",
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)
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make_option(
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"--dbs",
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action="callback",
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zeroarg_callback=_list_dbs,
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help="List available prefab dbs",
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)
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make_option(
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"--dburi",
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action="append",
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type=str,
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dest="dburi",
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help="Database uri. Multiple OK, " "first one is run by default.",
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)
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make_option(
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"--dbdriver",
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action="append",
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type="string",
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dest="dbdriver",
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help="Additional database drivers to include in tests. "
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"These are linked to the existing database URLs by the "
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"provisioning system.",
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)
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make_option(
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"--dropfirst",
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action="store_true",
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dest="dropfirst",
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help="Drop all tables in the target database first",
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)
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make_option(
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"--disable-asyncio",
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action="store_true",
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help="disable test / fixtures / provisoning running in asyncio",
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)
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make_option(
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"--backend-only",
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action="store_true",
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dest="backend_only",
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help="Run only tests marked with __backend__ or __sparse_backend__",
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)
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make_option(
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"--nomemory",
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action="store_true",
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dest="nomemory",
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help="Don't run memory profiling tests",
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)
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make_option(
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"--notimingintensive",
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action="store_true",
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dest="notimingintensive",
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help="Don't run timing intensive tests",
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)
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make_option(
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"--profile-sort",
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type=str,
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default="cumulative",
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dest="profilesort",
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help="Type of sort for profiling standard output",
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)
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make_option(
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"--profile-dump",
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type=str,
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dest="profiledump",
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help="Filename where a single profile run will be dumped",
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)
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make_option(
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"--postgresql-templatedb",
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type=str,
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help="name of template database to use for PostgreSQL "
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"CREATE DATABASE (defaults to current database)",
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)
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make_option(
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"--low-connections",
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action="store_true",
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dest="low_connections",
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help="Use a low number of distinct connections - "
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"i.e. for Oracle TNS",
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)
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make_option(
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"--write-idents",
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type=str,
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dest="write_idents",
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help="write out generated follower idents to <file>, "
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"when -n<num> is used",
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)
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make_option(
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"--reversetop",
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action="store_true",
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dest="reversetop",
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default=False,
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help="Use a random-ordering set implementation in the ORM "
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"(helps reveal dependency issues)",
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)
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make_option(
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"--requirements",
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action="callback",
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type=str,
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callback=_requirements_opt,
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help="requirements class for testing, overrides setup.cfg",
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)
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make_option(
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"--with-cdecimal",
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action="store_true",
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dest="cdecimal",
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default=False,
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help="Monkeypatch the cdecimal library into Python 'decimal' "
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"for all tests",
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)
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make_option(
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"--include-tag",
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action="callback",
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callback=_include_tag,
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type=str,
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help="Include tests with tag <tag>",
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)
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make_option(
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"--exclude-tag",
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action="callback",
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callback=_exclude_tag,
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type=str,
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help="Exclude tests with tag <tag>",
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)
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make_option(
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"--write-profiles",
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action="store_true",
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dest="write_profiles",
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default=False,
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help="Write/update failing profiling data.",
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)
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make_option(
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"--force-write-profiles",
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action="store_true",
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dest="force_write_profiles",
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default=False,
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help="Unconditionally write/update profiling data.",
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)
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make_option(
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"--dump-pyannotate",
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type=str,
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dest="dump_pyannotate",
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help="Run pyannotate and dump json info to given file",
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)
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make_option(
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"--mypy-extra-test-path",
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type=str,
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action="append",
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default=[],
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dest="mypy_extra_test_paths",
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help="Additional test directories to add to the mypy tests. "
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"This is used only when running mypy tests. Multiple OK",
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)
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def configure_follower(follower_ident):
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"""Configure required state for a follower.
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This invokes in the parent process and typically includes
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database creation.
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"""
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from sqlalchemy.testing import provision
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provision.FOLLOWER_IDENT = follower_ident
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def memoize_important_follower_config(dict_):
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"""Store important configuration we will need to send to a follower.
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This invokes in the parent process after normal config is set up.
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This is necessary as pytest seems to not be using forking, so we
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start with nothing in memory, *but* it isn't running our argparse
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callables, so we have to just copy all of that over.
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"""
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dict_["memoized_config"] = {
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"include_tags": include_tags,
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"exclude_tags": exclude_tags,
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}
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def restore_important_follower_config(dict_):
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"""Restore important configuration needed by a follower.
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This invokes in the follower process.
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"""
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global include_tags, exclude_tags
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include_tags.update(dict_["memoized_config"]["include_tags"])
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exclude_tags.update(dict_["memoized_config"]["exclude_tags"])
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def read_config():
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global file_config
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file_config = configparser.ConfigParser()
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file_config.read(["setup.cfg", "test.cfg"])
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def pre_begin(opt):
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"""things to set up early, before coverage might be setup."""
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global options
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options = opt
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for fn in pre_configure:
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fn(options, file_config)
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def set_coverage_flag(value):
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options.has_coverage = value
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def post_begin():
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"""things to set up later, once we know coverage is running."""
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# Lazy setup of other options (post coverage)
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for fn in post_configure:
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fn(options, file_config)
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# late imports, has to happen after config.
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global util, fixtures, engines, exclusions, assertions, provision
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global warnings, profiling, config, testing
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from sqlalchemy import testing # noqa
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from sqlalchemy.testing import fixtures, engines, exclusions # noqa
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from sqlalchemy.testing import assertions, warnings, profiling # noqa
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from sqlalchemy.testing import config, provision # noqa
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from sqlalchemy import util # noqa
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warnings.setup_filters()
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def _log(opt_str, value, parser):
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global logging
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if not logging:
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import logging
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logging.basicConfig()
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if opt_str.endswith("-info"):
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logging.getLogger(value).setLevel(logging.INFO)
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elif opt_str.endswith("-debug"):
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logging.getLogger(value).setLevel(logging.DEBUG)
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def _list_dbs(*args):
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print("Available --db options (use --dburi to override)")
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for macro in sorted(file_config.options("db")):
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print("%20s\t%s" % (macro, file_config.get("db", macro)))
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sys.exit(0)
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def _requirements_opt(opt_str, value, parser):
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_setup_requirements(value)
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def _exclude_tag(opt_str, value, parser):
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exclude_tags.add(value.replace("-", "_"))
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def _include_tag(opt_str, value, parser):
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include_tags.add(value.replace("-", "_"))
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pre_configure = []
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post_configure = []
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def pre(fn):
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pre_configure.append(fn)
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return fn
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def post(fn):
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post_configure.append(fn)
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return fn
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@pre
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def _setup_options(opt, file_config):
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global options
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options = opt
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@pre
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def _set_nomemory(opt, file_config):
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if opt.nomemory:
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exclude_tags.add("memory_intensive")
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@pre
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def _set_notimingintensive(opt, file_config):
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if opt.notimingintensive:
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exclude_tags.add("timing_intensive")
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@pre
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def _monkeypatch_cdecimal(options, file_config):
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if options.cdecimal:
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import cdecimal
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sys.modules["decimal"] = cdecimal
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@post
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def _init_symbols(options, file_config):
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from sqlalchemy.testing import config
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config._fixture_functions = _fixture_fn_class()
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@post
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def _set_disable_asyncio(opt, file_config):
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if opt.disable_asyncio or not py3k:
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from sqlalchemy.testing import asyncio
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asyncio.ENABLE_ASYNCIO = False
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@post
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def _engine_uri(options, file_config):
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from sqlalchemy import testing
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from sqlalchemy.testing import config
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from sqlalchemy.testing import provision
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if options.dburi:
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db_urls = list(options.dburi)
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else:
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db_urls = []
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extra_drivers = options.dbdriver or []
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if options.db:
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for db_token in options.db:
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for db in re.split(r"[,\s]+", db_token):
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if db not in file_config.options("db"):
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raise RuntimeError(
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"Unknown URI specifier '%s'. "
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"Specify --dbs for known uris." % db
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)
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else:
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db_urls.append(file_config.get("db", db))
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if not db_urls:
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db_urls.append(file_config.get("db", "default"))
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config._current = None
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expanded_urls = list(provision.generate_db_urls(db_urls, extra_drivers))
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for db_url in expanded_urls:
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log.info("Adding database URL: %s", db_url)
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if options.write_idents and provision.FOLLOWER_IDENT: # != 'master':
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with open(options.write_idents, "a") as file_:
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file_.write(provision.FOLLOWER_IDENT + " " + db_url + "\n")
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cfg = provision.setup_config(
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db_url, options, file_config, provision.FOLLOWER_IDENT
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)
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if not config._current:
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cfg.set_as_current(cfg, testing)
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@post
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def _requirements(options, file_config):
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requirement_cls = file_config.get("sqla_testing", "requirement_cls")
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_setup_requirements(requirement_cls)
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def _setup_requirements(argument):
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from sqlalchemy.testing import config
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from sqlalchemy import testing
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if config.requirements is not None:
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return
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modname, clsname = argument.split(":")
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# importlib.import_module() only introduced in 2.7, a little
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# late
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mod = __import__(modname)
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for component in modname.split(".")[1:]:
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mod = getattr(mod, component)
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req_cls = getattr(mod, clsname)
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config.requirements = testing.requires = req_cls()
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config.bootstrapped_as_sqlalchemy = bootstrapped_as_sqlalchemy
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@post
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def _prep_testing_database(options, file_config):
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from sqlalchemy.testing import config
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if options.dropfirst:
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from sqlalchemy.testing import provision
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for cfg in config.Config.all_configs():
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provision.drop_all_schema_objects(cfg, cfg.db)
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@post
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def _reverse_topological(options, file_config):
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if options.reversetop:
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from sqlalchemy.orm.util import randomize_unitofwork
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randomize_unitofwork()
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@post
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def _post_setup_options(opt, file_config):
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from sqlalchemy.testing import config
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config.options = options
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config.file_config = file_config
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@post
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def _setup_profiling(options, file_config):
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from sqlalchemy.testing import profiling
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profiling._profile_stats = profiling.ProfileStatsFile(
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file_config.get("sqla_testing", "profile_file"),
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sort=options.profilesort,
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dump=options.profiledump,
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)
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def want_class(name, cls):
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if not issubclass(cls, fixtures.TestBase):
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return False
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elif name.startswith("_"):
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return False
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elif (
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config.options.backend_only
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and not getattr(cls, "__backend__", False)
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and not getattr(cls, "__sparse_backend__", False)
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and not getattr(cls, "__only_on__", False)
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):
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return False
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else:
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return True
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def want_method(cls, fn):
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if not fn.__name__.startswith("test_"):
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return False
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elif fn.__module__ is None:
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return False
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elif include_tags:
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return (
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hasattr(cls, "__tags__")
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and exclusions.tags(cls.__tags__).include_test(
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include_tags, exclude_tags
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)
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) or (
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hasattr(fn, "_sa_exclusion_extend")
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and fn._sa_exclusion_extend.include_test(
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include_tags, exclude_tags
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)
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)
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elif exclude_tags and hasattr(cls, "__tags__"):
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return exclusions.tags(cls.__tags__).include_test(
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include_tags, exclude_tags
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)
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elif exclude_tags and hasattr(fn, "_sa_exclusion_extend"):
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return fn._sa_exclusion_extend.include_test(include_tags, exclude_tags)
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else:
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return True
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def generate_sub_tests(cls, module):
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if getattr(cls, "__backend__", False) or getattr(
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cls, "__sparse_backend__", False
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):
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sparse = getattr(cls, "__sparse_backend__", False)
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for cfg in _possible_configs_for_cls(cls, sparse=sparse):
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orig_name = cls.__name__
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# we can have special chars in these names except for the
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# pytest junit plugin, which is tripped up by the brackets
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# and periods, so sanitize
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alpha_name = re.sub(r"[_\[\]\.]+", "_", cfg.name)
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alpha_name = re.sub(r"_+$", "", alpha_name)
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name = "%s_%s" % (cls.__name__, alpha_name)
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subcls = type(
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name,
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(cls,),
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{"_sa_orig_cls_name": orig_name, "__only_on_config__": cfg},
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)
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setattr(module, name, subcls)
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yield subcls
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else:
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yield cls
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def start_test_class_outside_fixtures(cls):
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_do_skips(cls)
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_setup_engine(cls)
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def stop_test_class(cls):
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# close sessions, immediate connections, etc.
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fixtures.stop_test_class_inside_fixtures(cls)
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# close outstanding connection pool connections, dispose of
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# additional engines
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engines.testing_reaper.stop_test_class_inside_fixtures()
|
|
|
|
|
|
def stop_test_class_outside_fixtures(cls):
|
|
engines.testing_reaper.stop_test_class_outside_fixtures()
|
|
provision.stop_test_class_outside_fixtures(config, config.db, cls)
|
|
try:
|
|
if not options.low_connections:
|
|
assertions.global_cleanup_assertions()
|
|
finally:
|
|
_restore_engine()
|
|
|
|
|
|
def _restore_engine():
|
|
if config._current:
|
|
config._current.reset(testing)
|
|
|
|
|
|
def final_process_cleanup():
|
|
engines.testing_reaper.final_cleanup()
|
|
assertions.global_cleanup_assertions()
|
|
_restore_engine()
|
|
|
|
|
|
def _setup_engine(cls):
|
|
if getattr(cls, "__engine_options__", None):
|
|
opts = dict(cls.__engine_options__)
|
|
opts["scope"] = "class"
|
|
eng = engines.testing_engine(options=opts)
|
|
config._current.push_engine(eng, testing)
|
|
|
|
|
|
def before_test(test, test_module_name, test_class, test_name):
|
|
|
|
# format looks like:
|
|
# "test.aaa_profiling.test_compiler.CompileTest.test_update_whereclause"
|
|
|
|
name = getattr(test_class, "_sa_orig_cls_name", test_class.__name__)
|
|
|
|
id_ = "%s.%s.%s" % (test_module_name, name, test_name)
|
|
|
|
profiling._start_current_test(id_)
|
|
|
|
|
|
def after_test(test):
|
|
fixtures.after_test()
|
|
engines.testing_reaper.after_test()
|
|
|
|
|
|
def after_test_fixtures(test):
|
|
engines.testing_reaper.after_test_outside_fixtures(test)
|
|
|
|
|
|
def _possible_configs_for_cls(cls, reasons=None, sparse=False):
|
|
all_configs = set(config.Config.all_configs())
|
|
|
|
if cls.__unsupported_on__:
|
|
spec = exclusions.db_spec(*cls.__unsupported_on__)
|
|
for config_obj in list(all_configs):
|
|
if spec(config_obj):
|
|
all_configs.remove(config_obj)
|
|
|
|
if getattr(cls, "__only_on__", None):
|
|
spec = exclusions.db_spec(*util.to_list(cls.__only_on__))
|
|
for config_obj in list(all_configs):
|
|
if not spec(config_obj):
|
|
all_configs.remove(config_obj)
|
|
|
|
if getattr(cls, "__only_on_config__", None):
|
|
all_configs.intersection_update([cls.__only_on_config__])
|
|
|
|
if hasattr(cls, "__requires__"):
|
|
requirements = config.requirements
|
|
for config_obj in list(all_configs):
|
|
for requirement in cls.__requires__:
|
|
check = getattr(requirements, requirement)
|
|
|
|
skip_reasons = check.matching_config_reasons(config_obj)
|
|
if skip_reasons:
|
|
all_configs.remove(config_obj)
|
|
if reasons is not None:
|
|
reasons.extend(skip_reasons)
|
|
break
|
|
|
|
if hasattr(cls, "__prefer_requires__"):
|
|
non_preferred = set()
|
|
requirements = config.requirements
|
|
for config_obj in list(all_configs):
|
|
for requirement in cls.__prefer_requires__:
|
|
check = getattr(requirements, requirement)
|
|
|
|
if not check.enabled_for_config(config_obj):
|
|
non_preferred.add(config_obj)
|
|
if all_configs.difference(non_preferred):
|
|
all_configs.difference_update(non_preferred)
|
|
|
|
if sparse:
|
|
# pick only one config from each base dialect
|
|
# sorted so we get the same backend each time selecting the highest
|
|
# server version info.
|
|
per_dialect = {}
|
|
for cfg in reversed(
|
|
sorted(
|
|
all_configs,
|
|
key=lambda cfg: (
|
|
cfg.db.name,
|
|
cfg.db.driver,
|
|
cfg.db.dialect.server_version_info,
|
|
),
|
|
)
|
|
):
|
|
db = cfg.db.name
|
|
if db not in per_dialect:
|
|
per_dialect[db] = cfg
|
|
return per_dialect.values()
|
|
|
|
return all_configs
|
|
|
|
|
|
def _do_skips(cls):
|
|
reasons = []
|
|
all_configs = _possible_configs_for_cls(cls, reasons)
|
|
|
|
if getattr(cls, "__skip_if__", False):
|
|
for c in getattr(cls, "__skip_if__"):
|
|
if c():
|
|
config.skip_test(
|
|
"'%s' skipped by %s" % (cls.__name__, c.__name__)
|
|
)
|
|
|
|
if not all_configs:
|
|
msg = "'%s' unsupported on any DB implementation %s%s" % (
|
|
cls.__name__,
|
|
", ".join(
|
|
"'%s(%s)+%s'"
|
|
% (
|
|
config_obj.db.name,
|
|
".".join(
|
|
str(dig)
|
|
for dig in exclusions._server_version(config_obj.db)
|
|
),
|
|
config_obj.db.driver,
|
|
)
|
|
for config_obj in config.Config.all_configs()
|
|
),
|
|
", ".join(reasons),
|
|
)
|
|
config.skip_test(msg)
|
|
elif hasattr(cls, "__prefer_backends__"):
|
|
non_preferred = set()
|
|
spec = exclusions.db_spec(*util.to_list(cls.__prefer_backends__))
|
|
for config_obj in all_configs:
|
|
if not spec(config_obj):
|
|
non_preferred.add(config_obj)
|
|
if all_configs.difference(non_preferred):
|
|
all_configs.difference_update(non_preferred)
|
|
|
|
if config._current not in all_configs:
|
|
_setup_config(all_configs.pop(), cls)
|
|
|
|
|
|
def _setup_config(config_obj, ctx):
|
|
config._current.push(config_obj, testing)
|
|
|
|
|
|
class FixtureFunctions(ABC):
|
|
@abc.abstractmethod
|
|
def skip_test_exception(self, *arg, **kw):
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def combinations(self, *args, **kw):
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def param_ident(self, *args, **kw):
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def fixture(self, *arg, **kw):
|
|
raise NotImplementedError()
|
|
|
|
def get_current_test_name(self):
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def mark_base_test_class(self):
|
|
raise NotImplementedError()
|
|
|
|
|
|
_fixture_fn_class = None
|
|
|
|
|
|
def set_fixture_functions(fixture_fn_class):
|
|
global _fixture_fn_class
|
|
_fixture_fn_class = fixture_fn_class
|