427 lines
13 KiB
Python
427 lines
13 KiB
Python
try:
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# installed by bootstrap.py
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import sqla_plugin_base as plugin_base
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except ImportError:
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# assume we're a package, use traditional import
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from . import plugin_base
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import argparse
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import collections
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import inspect
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import itertools
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import operator
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import os
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import re
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import sys
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import pytest
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try:
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import xdist # noqa
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has_xdist = True
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except ImportError:
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has_xdist = False
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def pytest_addoption(parser):
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group = parser.getgroup("sqlalchemy")
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def make_option(name, **kw):
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callback_ = kw.pop("callback", None)
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if callback_:
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class CallableAction(argparse.Action):
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def __call__(
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self, parser, namespace, values, option_string=None
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):
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callback_(option_string, values, parser)
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kw["action"] = CallableAction
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zeroarg_callback = kw.pop("zeroarg_callback", None)
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if zeroarg_callback:
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class CallableAction(argparse.Action):
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def __init__(
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self,
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option_strings,
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dest,
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default=False,
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required=False,
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help=None, # noqa
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):
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super(CallableAction, self).__init__(
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option_strings=option_strings,
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dest=dest,
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nargs=0,
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const=True,
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default=default,
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required=required,
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help=help,
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)
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def __call__(
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self, parser, namespace, values, option_string=None
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):
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zeroarg_callback(option_string, values, parser)
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kw["action"] = CallableAction
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group.addoption(name, **kw)
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plugin_base.setup_options(make_option)
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plugin_base.read_config()
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def pytest_configure(config):
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pytest.register_assert_rewrite("sqlalchemy.testing.assertions")
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if hasattr(config, "slaveinput"):
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plugin_base.restore_important_follower_config(config.slaveinput)
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plugin_base.configure_follower(config.slaveinput["follower_ident"])
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else:
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if config.option.write_idents and os.path.exists(
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config.option.write_idents
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):
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os.remove(config.option.write_idents)
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plugin_base.pre_begin(config.option)
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plugin_base.set_coverage_flag(
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bool(getattr(config.option, "cov_source", False))
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)
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plugin_base.set_fixture_functions(PytestFixtureFunctions)
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def pytest_sessionstart(session):
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plugin_base.post_begin()
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def pytest_sessionfinish(session):
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plugin_base.final_process_cleanup()
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if has_xdist:
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import uuid
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def pytest_configure_node(node):
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# the master for each node fills slaveinput dictionary
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# which pytest-xdist will transfer to the subprocess
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plugin_base.memoize_important_follower_config(node.slaveinput)
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node.slaveinput["follower_ident"] = "test_%s" % uuid.uuid4().hex[0:12]
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from sqlalchemy.testing import provision
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provision.create_follower_db(node.slaveinput["follower_ident"])
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def pytest_testnodedown(node, error):
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from sqlalchemy.testing import provision
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provision.drop_follower_db(node.slaveinput["follower_ident"])
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def pytest_collection_modifyitems(session, config, items):
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# look for all those classes that specify __backend__ and
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# expand them out into per-database test cases.
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# this is much easier to do within pytest_pycollect_makeitem, however
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# pytest is iterating through cls.__dict__ as makeitem is
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# called which causes a "dictionary changed size" error on py3k.
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# I'd submit a pullreq for them to turn it into a list first, but
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# it's to suit the rather odd use case here which is that we are adding
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# new classes to a module on the fly.
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rebuilt_items = collections.defaultdict(
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lambda: collections.defaultdict(list)
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)
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items[:] = [
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item
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for item in items
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if isinstance(item.parent, pytest.Instance)
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and not item.parent.parent.name.startswith("_")
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]
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test_classes = set(item.parent for item in items)
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for test_class in test_classes:
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for sub_cls in plugin_base.generate_sub_tests(
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test_class.cls, test_class.parent.module
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):
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if sub_cls is not test_class.cls:
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per_cls_dict = rebuilt_items[test_class.cls]
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for inst in pytest.Class(
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sub_cls.__name__, parent=test_class.parent.parent
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).collect():
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for t in inst.collect():
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per_cls_dict[t.name].append(t)
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newitems = []
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for item in items:
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if item.parent.cls in rebuilt_items:
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newitems.extend(rebuilt_items[item.parent.cls][item.name])
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else:
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newitems.append(item)
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# seems like the functions attached to a test class aren't sorted already?
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# is that true and why's that? (when using unittest, they're sorted)
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items[:] = sorted(
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newitems,
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key=lambda item: (
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item.parent.parent.parent.name,
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item.parent.parent.name,
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item.name,
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),
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)
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def pytest_pycollect_makeitem(collector, name, obj):
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if inspect.isclass(obj) and plugin_base.want_class(name, obj):
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return [
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pytest.Class(parametrize_cls.__name__, parent=collector)
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for parametrize_cls in _parametrize_cls(collector.module, obj)
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]
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elif (
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inspect.isfunction(obj)
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and isinstance(collector, pytest.Instance)
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and plugin_base.want_method(collector.cls, obj)
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):
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# None means, fall back to default logic, which includes
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# method-level parametrize
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return None
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else:
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# empty list means skip this item
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return []
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_current_class = None
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def _parametrize_cls(module, cls):
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"""implement a class-based version of pytest parametrize."""
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if "_sa_parametrize" not in cls.__dict__:
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return [cls]
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_sa_parametrize = cls._sa_parametrize
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classes = []
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for full_param_set in itertools.product(
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*[params for argname, params in _sa_parametrize]
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):
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cls_variables = {}
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for argname, param in zip(
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[_sa_param[0] for _sa_param in _sa_parametrize], full_param_set
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):
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if not argname:
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raise TypeError("need argnames for class-based combinations")
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argname_split = re.split(r",\s*", argname)
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for arg, val in zip(argname_split, param.values):
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cls_variables[arg] = val
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parametrized_name = "_".join(
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# token is a string, but in py2k py.test is giving us a unicode,
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# so call str() on it.
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str(re.sub(r"\W", "", token))
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for param in full_param_set
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for token in param.id.split("-")
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)
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name = "%s_%s" % (cls.__name__, parametrized_name)
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newcls = type.__new__(type, name, (cls,), cls_variables)
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setattr(module, name, newcls)
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classes.append(newcls)
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return classes
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def pytest_runtest_setup(item):
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# here we seem to get called only based on what we collected
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# in pytest_collection_modifyitems. So to do class-based stuff
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# we have to tear that out.
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global _current_class
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if not isinstance(item, pytest.Function):
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return
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# ... so we're doing a little dance here to figure it out...
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if _current_class is None:
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class_setup(item.parent.parent)
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_current_class = item.parent.parent
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# this is needed for the class-level, to ensure that the
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# teardown runs after the class is completed with its own
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# class-level teardown...
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def finalize():
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global _current_class
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class_teardown(item.parent.parent)
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_current_class = None
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item.parent.parent.addfinalizer(finalize)
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test_setup(item)
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def pytest_runtest_teardown(item):
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# ...but this works better as the hook here rather than
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# using a finalizer, as the finalizer seems to get in the way
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# of the test reporting failures correctly (you get a bunch of
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# py.test assertion stuff instead)
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test_teardown(item)
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def test_setup(item):
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plugin_base.before_test(
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item, item.parent.module.__name__, item.parent.cls, item.name
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)
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def test_teardown(item):
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plugin_base.after_test(item)
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def class_setup(item):
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plugin_base.start_test_class(item.cls)
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def class_teardown(item):
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plugin_base.stop_test_class(item.cls)
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def getargspec(fn):
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if sys.version_info.major == 3:
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return inspect.getfullargspec(fn)
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else:
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return inspect.getargspec(fn)
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class PytestFixtureFunctions(plugin_base.FixtureFunctions):
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def skip_test_exception(self, *arg, **kw):
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return pytest.skip.Exception(*arg, **kw)
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_combination_id_fns = {
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"i": lambda obj: obj,
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"r": repr,
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"s": str,
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"n": operator.attrgetter("__name__"),
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}
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def combinations(self, *arg_sets, **kw):
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"""facade for pytest.mark.paramtrize.
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Automatically derives argument names from the callable which in our
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case is always a method on a class with positional arguments.
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ids for parameter sets are derived using an optional template.
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"""
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from sqlalchemy.testing import exclusions
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if sys.version_info.major == 3:
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if len(arg_sets) == 1 and hasattr(arg_sets[0], "__next__"):
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arg_sets = list(arg_sets[0])
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else:
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if len(arg_sets) == 1 and hasattr(arg_sets[0], "next"):
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arg_sets = list(arg_sets[0])
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argnames = kw.pop("argnames", None)
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exclusion_combinations = []
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def _filter_exclusions(args):
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result = []
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gathered_exclusions = []
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for a in args:
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if isinstance(a, exclusions.compound):
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gathered_exclusions.append(a)
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else:
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result.append(a)
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exclusion_combinations.extend(
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[(exclusion, result) for exclusion in gathered_exclusions]
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)
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return result
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id_ = kw.pop("id_", None)
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if id_:
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_combination_id_fns = self._combination_id_fns
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# because itemgetter is not consistent for one argument vs.
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# multiple, make it multiple in all cases and use a slice
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# to omit the first argument
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_arg_getter = operator.itemgetter(
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0,
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*[
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idx
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for idx, char in enumerate(id_)
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if char in ("n", "r", "s", "a")
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]
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)
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fns = [
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(operator.itemgetter(idx), _combination_id_fns[char])
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for idx, char in enumerate(id_)
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if char in _combination_id_fns
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]
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arg_sets = [
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pytest.param(
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*_arg_getter(_filter_exclusions(arg))[1:],
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id="-".join(
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comb_fn(getter(arg)) for getter, comb_fn in fns
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)
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)
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for arg in [
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(arg,) if not isinstance(arg, tuple) else arg
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for arg in arg_sets
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]
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]
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else:
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# ensure using pytest.param so that even a 1-arg paramset
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# still needs to be a tuple. otherwise paramtrize tries to
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# interpret a single arg differently than tuple arg
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arg_sets = [
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pytest.param(*_filter_exclusions(arg))
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for arg in [
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(arg,) if not isinstance(arg, tuple) else arg
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for arg in arg_sets
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]
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]
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def decorate(fn):
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if inspect.isclass(fn):
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if "_sa_parametrize" not in fn.__dict__:
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fn._sa_parametrize = []
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fn._sa_parametrize.append((argnames, arg_sets))
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return fn
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else:
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if argnames is None:
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_argnames = getargspec(fn).args[1:]
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else:
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_argnames = argnames
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if exclusion_combinations:
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for exclusion, combination in exclusion_combinations:
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combination_by_kw = {
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argname: val
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for argname, val in zip(_argnames, combination)
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}
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exclusion = exclusion.with_combination(
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**combination_by_kw
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)
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fn = exclusion(fn)
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return pytest.mark.parametrize(_argnames, arg_sets)(fn)
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return decorate
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def param_ident(self, *parameters):
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ident = parameters[0]
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return pytest.param(*parameters[1:], id=ident)
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def fixture(self, *arg, **kw):
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return pytest.fixture(*arg, **kw)
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def get_current_test_name(self):
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return os.environ.get("PYTEST_CURRENT_TEST")
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