""" command line options, ini-file and conftest.py processing. """
import argparse
import copy
import enum
import inspect
import os
import shlex
import sys
import types
import warnings
from functools import lru_cache
from types import TracebackType
from typing import Any
from typing import Callable
from typing import Dict
from typing import List
from typing import Optional
from typing import Sequence
from typing import Set
from typing import Tuple
from typing import Union
import attr
import py
from packaging.version import Version
from pluggy import HookimplMarker
from pluggy import HookspecMarker
from pluggy import PluginManager
import _pytest._code
import _pytest.deprecated
import _pytest.hookspec # the extension point definitions
from .exceptions import PrintHelp
from .exceptions import UsageError
from .findpaths import determine_setup
from .findpaths import exists
from _pytest._code import ExceptionInfo
from _pytest._code import filter_traceback
from _pytest._io import TerminalWriter
from _pytest.compat import importlib_metadata
from _pytest.compat import TYPE_CHECKING
from _pytest.outcomes import fail
from _pytest.outcomes import Skipped
from _pytest.pathlib import Path
from _pytest.store import Store
from _pytest.warning_types import PytestConfigWarning
if TYPE_CHECKING:
from typing import Type
from .argparsing import Argument
_PluggyPlugin = object
"""A type to represent plugin objects.
Plugins can be any namespace, so we can't narrow it down much, but we use an
alias to make the intent clear.
Ideally this type would be provided by pluggy itself."""
hookimpl = HookimplMarker("pytest")
hookspec = HookspecMarker("pytest")
class ExitCode(enum.IntEnum):
"""
.. versionadded:: 5.0
Encodes the valid exit codes by pytest.
Currently users and plugins may supply other exit codes as well.
"""
#: tests passed
OK = 0
#: tests failed
TESTS_FAILED = 1
#: pytest was interrupted
INTERRUPTED = 2
#: an internal error got in the way
INTERNAL_ERROR = 3
#: pytest was misused
USAGE_ERROR = 4
#: pytest couldn't find tests
NO_TESTS_COLLECTED = 5
class ConftestImportFailure(Exception):
def __init__(self, path, excinfo):
Exception.__init__(self, path, excinfo)
self.path = path
self.excinfo = excinfo # type: Tuple[Type[Exception], Exception, TracebackType]
def main(args=None, plugins=None) -> Union[int, ExitCode]:
""" return exit code, after performing an in-process test run.
:arg args: list of command line arguments.
:arg plugins: list of plugin objects to be auto-registered during
initialization.
"""
try:
try:
config = _prepareconfig(args, plugins)
except ConftestImportFailure as e:
exc_info = ExceptionInfo(e.excinfo)
tw = TerminalWriter(sys.stderr)
tw.line(
"ImportError while loading conftest '{e.path}'.".format(e=e), red=True
)
exc_info.traceback = exc_info.traceback.filter(filter_traceback)
exc_repr = (
exc_info.getrepr(style="short", chain=False)
if exc_info.traceback
else exc_info.exconly()
)
formatted_tb = str(exc_repr)
for line in formatted_tb.splitlines():
tw.line(line.rstrip(), red=True)
return ExitCode.USAGE_ERROR
else:
try:
ret = config.hook.pytest_cmdline_main(
config=config
) # type: Union[ExitCode, int]
try:
return ExitCode(ret)
except ValueError:
return ret
finally:
config._ensure_unconfigure()
except UsageError as e:
tw = TerminalWriter(sys.stderr)
for msg in e.args:
tw.line("ERROR: {}\n".format(msg), red=True)
return ExitCode.USAGE_ERROR
class cmdline: # compatibility namespace
main = staticmethod(main)
def filename_arg(path, optname):
""" Argparse type validator for filename arguments.
:path: path of filename
:optname: name of the option
"""
if os.path.isdir(path):
raise UsageError("{} must be a filename, given: {}".format(optname, path))
return path
def directory_arg(path, optname):
"""Argparse type validator for directory arguments.
:path: path of directory
:optname: name of the option
"""
if not os.path.isdir(path):
raise UsageError("{} must be a directory, given: {}".format(optname, path))
return path
# Plugins that cannot be disabled via "-p no:X" currently.
essential_plugins = (
"mark",
"main",
"runner",
"fixtures",
"helpconfig", # Provides -p.
)
default_plugins = essential_plugins + (
"python",
"terminal",
"debugging",
"unittest",
"capture",
"skipping",
"tmpdir",
"monkeypatch",
"recwarn",
"pastebin",
"nose",
"assertion",
"junitxml",
"resultlog",
"doctest",
"cacheprovider",
"freeze_support",
"setuponly",
"setupplan",
"stepwise",
"warnings",
"logging",
"reports",
"faulthandler",
)
builtin_plugins = set(default_plugins)
builtin_plugins.add("pytester")
def get_config(args=None, plugins=None):
# subsequent calls to main will create a fresh instance
pluginmanager = PytestPluginManager()
config = Config(
pluginmanager,
invocation_params=Config.InvocationParams(
args=args or (), plugins=plugins, dir=Path().resolve()
),
)
if args is not None:
# Handle any "-p no:plugin" args.
pluginmanager.consider_preparse(args, exclude_only=True)
for spec in default_plugins:
pluginmanager.import_plugin(spec)
return config
def get_plugin_manager():
"""
Obtain a new instance of the
:py:class:`_pytest.config.PytestPluginManager`, with default plugins
already loaded.
This function can be used by integration with other tools, like hooking
into pytest to run tests into an IDE.
"""
return get_config().pluginmanager
def _prepareconfig(
args: Optional[Union[py.path.local, List[str]]] = None, plugins=None
):
if args is None:
args = sys.argv[1:]
elif isinstance(args, py.path.local):
args = [str(args)]
elif not isinstance(args, list):
msg = "`args` parameter expected to be a list of strings, got: {!r} (type: {})"
raise TypeError(msg.format(args, type(args)))
config = get_config(args, plugins)
pluginmanager = config.pluginmanager
try:
if plugins:
for plugin in plugins:
if isinstance(plugin, str):
pluginmanager.consider_pluginarg(plugin)
else:
pluginmanager.register(plugin)
return pluginmanager.hook.pytest_cmdline_parse(
pluginmanager=pluginmanager, args=args
)
except BaseException:
config._ensure_unconfigure()
raise
def _fail_on_non_top_pytest_plugins(conftestpath, confcutdir):
msg = (
"Defining 'pytest_plugins' in a non-top-level conftest is no longer supported:\n"
"It affects the entire test suite instead of just below the conftest as expected.\n"
" {}\n"
"Please move it to a top level conftest file at the rootdir:\n"
" {}\n"
"For more information, visit:\n"
" https://docs.pytest.org/en/latest/deprecations.html#pytest-plugins-in-non-top-level-conftest-files"
)
fail(msg.format(conftestpath, confcutdir), pytrace=False)
class PytestPluginManager(PluginManager):
"""
Overwrites :py:class:`pluggy.PluginManager <pluggy.PluginManager>` to add pytest-specific
functionality:
* loading plugins from the command line, ``PYTEST_PLUGINS`` env variable and
``pytest_plugins`` global variables found in plugins being loaded;
* ``conftest.py`` loading during start-up;
"""
def __init__(self):
import _pytest.assertion
super().__init__("pytest")
# The objects are module objects, only used generically.
self._conftest_plugins = set() # type: Set[object]
# state related to local conftest plugins
# Maps a py.path.local to a list of module objects.
self._dirpath2confmods = {} # type: Dict[Any, List[object]]
# Maps a py.path.local to a module object.
self._conftestpath2mod = {} # type: Dict[Any, object]
self._confcutdir = None
self._noconftest = False
# Set of py.path.local's.
self._duplicatepaths = set() # type: Set[Any]
self.add_hookspecs(_pytest.hookspec)
self.register(self)
if os.environ.get("PYTEST_DEBUG"):
err = sys.stderr
encoding = getattr(err, "encoding", "utf8")
try:
err = py.io.dupfile(err, encoding=encoding)
except Exception:
pass
self.trace.root.setwriter(err.write)
self.enable_tracing()
# Config._consider_importhook will set a real object if required.
self.rewrite_hook = _pytest.assertion.DummyRewriteHook()
# Used to know when we are importing conftests after the pytest_configure stage
self._configured = False
def parse_hookimpl_opts(self, plugin, name):
# pytest hooks are always prefixed with pytest_
# so we avoid accessing possibly non-readable attributes
# (see issue #1073)
if not name.startswith("pytest_"):
return
# ignore names which can not be hooks
if name == "pytest_plugins":
return
method = getattr(plugin, name)
opts = super().parse_hookimpl_opts(plugin, name)
# consider only actual functions for hooks (#3775)
if not inspect.isroutine(method):
return
# collect unmarked hooks as long as they have the `pytest_' prefix
if opts is None and name.startswith("pytest_"):
opts = {}
if opts is not None:
# TODO: DeprecationWarning, people should use hookimpl
# https://github.com/pytest-dev/pytest/issues/4562
known_marks = {m.name for m in getattr(method, "pytestmark", [])}
for name in ("tryfirst", "trylast", "optionalhook", "hookwrapper"):
opts.setdefault(name, hasattr(method, name) or name in known_marks)
return opts
def parse_hookspec_opts(self, module_or_class, name):
opts = super().parse_hookspec_opts(module_or_class, name)
if opts is None:
method = getattr(module_or_class, name)
if name.startswith("pytest_"):
# todo: deprecate hookspec hacks
# https://github.com/pytest-dev/pytest/issues/4562
known_marks = {m.name for m in getattr(method, "pytestmark", [])}
opts = {
"firstresult": hasattr(method, "firstresult")
or "firstresult" in known_marks,
"historic": hasattr(method, "historic")
or "historic" in known_marks,
}
return opts
def register(self, plugin, name=None):
if name in _pytest.deprecated.DEPRECATED_EXTERNAL_PLUGINS:
warnings.warn(
PytestConfigWarning(
"{} plugin has been merged into the core, "
"please remove it from your requirements.".format(
name.replace("_", "-")
)
)
)
return
ret = super().register(plugin, name)
if ret:
self.hook.pytest_plugin_registered.call_historic(
kwargs=dict(plugin=plugin, manager=self)
)
if isinstance(plugin, types.ModuleType):
self.consider_module(plugin)
return ret
def getplugin(self, name):
# support deprecated naming because plugins (xdist e.g.) use it
return self.get_plugin(name)
def hasplugin(self, name):
"""Return True if the plugin with the given name is registered."""
return bool(self.get_plugin(name))
def pytest_configure(self, config):
# XXX now that the pluginmanager exposes hookimpl(tryfirst...)
# we should remove tryfirst/trylast as markers
config.addinivalue_line(
"markers",
"tryfirst: mark a hook implementation function such that the "
"plugin machinery will try to call it first/as early as possible.",
)
config.addinivalue_line(
"markers",
"trylast: mark a hook implementation function such that the "
"plugin machinery will try to call it last/as late as possible.",
)
self._configured = True
#
# internal API for local conftest plugin handling
#
def _set_initial_conftests(self, namespace):
""" load initial conftest files given a preparsed "namespace".
As conftest files may add their own command line options
which have arguments ('--my-opt somepath') we might get some
false positives. All builtin and 3rd party plugins will have
been loaded, however, so common options will not confuse our logic
here.
"""
current = py.path.local()
self._confcutdir = (
current.join(namespace.confcutdir, abs=True)
if namespace.confcutdir
else None
)
self._noconftest = namespace.noconftest
self._using_pyargs = namespace.pyargs
testpaths = namespace.file_or_dir
foundanchor = False
for path in testpaths:
path = str(path)
# remove node-id syntax
i = path.find("::")
if i != -1:
path = path[:i]
anchor = current.join(path, abs=1)
if exists(anchor): # we found some file object
self._try_load_conftest(anchor)
foundanchor = True
if not foundanchor:
self._try_load_conftest(current)
def _try_load_conftest(self, anchor):
self._getconftestmodules(anchor)
# let's also consider test* subdirs
if anchor.check(dir=1):
for x in anchor.listdir("test*"):
if x.check(dir=1):
self._getconftestmodules(x)
@lru_cache(maxsize=128)
def _getconftestmodules(self, path):
if self._noconftest:
return []
if path.isfile():
directory = path.dirpath()
else:
directory = path
# XXX these days we may rather want to use config.rootdir
# and allow users to opt into looking into the rootdir parent
# directories instead of requiring to specify confcutdir
clist = []
for parent in directory.realpath().parts():
if self._confcutdir and self._confcutdir.relto(parent):
continue
conftestpath = parent.join("conftest.py")
if conftestpath.isfile():
mod = self._importconftest(conftestpath)
clist.append(mod)
self._dirpath2confmods[directory] = clist
return clist
def _rget_with_confmod(self, name, path):
modules = self._getconftestmodules(path)
for mod in reversed(modules):
try:
return mod, getattr(mod, name)
except AttributeError:
continue
raise KeyError(name)
def _importconftest(self, conftestpath):
# Use a resolved Path object as key to avoid loading the same conftest twice
# with build systems that create build directories containing
# symlinks to actual files.
# Using Path().resolve() is better than py.path.realpath because
# it resolves to the correct path/drive in case-insensitive file systems (#5792)
key = Path(str(conftestpath)).resolve()
try:
return self._conftestpath2mod[key]
except KeyError:
pkgpath = conftestpath.pypkgpath()
if pkgpath is None:
_ensure_removed_sysmodule(conftestpath.purebasename)
try:
mod = conftestpath.pyimport()
if (
hasattr(mod, "pytest_plugins")
and self._configured
and not self._using_pyargs
):
_fail_on_non_top_pytest_plugins(conftestpath, self._confcutdir)
except Exception:
raise ConftestImportFailure(conftestpath, sys.exc_info())
self._conftest_plugins.add(mod)
self._conftestpath2mod[key] = mod
dirpath = conftestpath.dirpath()
if dirpath in self._dirpath2confmods:
for path, mods in self._dirpath2confmods.items():
if path and path.relto(dirpath) or path == dirpath:
assert mod not in mods
mods.append(mod)
self.trace("loading conftestmodule {!r}".format(mod))
self.consider_conftest(mod)
return mod
#
# API for bootstrapping plugin loading
#
#
def consider_preparse(self, args, *, exclude_only=False):
i = 0
n = len(args)
while i < n:
opt = args[i]
i += 1
if isinstance(opt, str):
if opt == "-p":
try:
parg = args[i]
except IndexError:
return
i += 1
elif opt.startswith("-p"):
parg = opt[2:]
else:
continue
if exclude_only and not parg.startswith("no:"):
continue
self.consider_pluginarg(parg)
def consider_pluginarg(self, arg):
if arg.startswith("no:"):
name = arg[3:]
if name in essential_plugins:
raise UsageError("plugin %s cannot be disabled" % name)
# PR #4304 : remove stepwise if cacheprovider is blocked
if name == "cacheprovider":
self.set_blocked("stepwise")
self.set_blocked("pytest_stepwise")
self.set_blocked(name)
if not name.startswith("pytest_"):
self.set_blocked("pytest_" + name)
else:
name = arg
# Unblock the plugin. None indicates that it has been blocked.
# There is no interface with pluggy for this.
if self._name2plugin.get(name, -1) is None:
del self._name2plugin[name]
if not name.startswith("pytest_"):
if self._name2plugin.get("pytest_" + name, -1) is None:
del self._name2plugin["pytest_" + name]
self.import_plugin(arg, consider_entry_points=True)
def consider_conftest(self, conftestmodule):
self.register(conftestmodule, name=conftestmodule.__file__)
def consider_env(self):
self._import_plugin_specs(os.environ.get("PYTEST_PLUGINS"))
def consider_module(self, mod):
self._import_plugin_specs(getattr(mod, "pytest_plugins", []))
def _import_plugin_specs(self, spec):
plugins = _get_plugin_specs_as_list(spec)
for import_spec in plugins:
self.import_plugin(import_spec)
def import_plugin(self, modname, consider_entry_points=False):
"""
Imports a plugin with ``modname``. If ``consider_entry_points`` is True, entry point
names are also considered to find a plugin.
"""
# most often modname refers to builtin modules, e.g. "pytester",
# "terminal" or "capture". Those plugins are registered under their
# basename for historic purposes but must be imported with the
# _pytest prefix.
assert isinstance(modname, str), (
"module name as text required, got %r" % modname
)
modname = str(modname)
if self.is_blocked(modname) or self.get_plugin(modname) is not None:
return
importspec = "_pytest." + modname if modname in builtin_plugins else modname
self.rewrite_hook.mark_rewrite(importspec)
if consider_entry_points:
loaded = self.load_setuptools_entrypoints("pytest11", name=modname)
if loaded:
return
try:
__import__(importspec)
except ImportError as e:
raise ImportError(
'Error importing plugin "{}": {}'.format(modname, str(e.args[0]))
).with_traceback(e.__traceback__)
except Skipped as e:
from _pytest.warnings import _issue_warning_captured
_issue_warning_captured(
PytestConfigWarning("skipped plugin {!r}: {}".format(modname, e.msg)),
self.hook,
stacklevel=2,
)
else:
mod = sys.modules[importspec]
self.register(mod, modname)
def _get_plugin_specs_as_list(specs):
"""
Parses a list of "plugin specs" and returns a list of plugin names.
Plugin specs can be given as a list of strings separated by "," or already as a list/tuple in
which case it is returned as a list. Specs can also be `None` in which case an
empty list is returned.
"""
if specs is not None and not isinstance(specs, types.ModuleType):
if isinstance(specs, str):
specs = specs.split(",") if specs else []
if not isinstance(specs, (list, tuple)):
raise UsageError(
"Plugin specs must be a ','-separated string or a "
"list/tuple of strings for plugin names. Given: %r" % specs
)
return list(specs)
return []
def _ensure_removed_sysmodule(modname):
try:
del sys.modules[modname]
except KeyError:
pass
class Notset:
def __repr__(self):
return "<NOTSET>"
notset = Notset()
def _iter_rewritable_modules(package_files):
"""
Given an iterable of file names in a source distribution, return the "names" that should
be marked for assertion rewrite (for example the package "pytest_mock/__init__.py" should
be added as "pytest_mock" in the assertion rewrite mechanism.
This function has to deal with dist-info based distributions and egg based distributions
(which are still very much in use for "editable" installs).
Here are the file names as seen in a dist-info based distribution:
pytest_mock/__init__.py
pytest_mock/_version.py
pytest_mock/plugin.py
pytest_mock.egg-info/PKG-INFO
Here are the file names as seen in an egg based distribution:
src/pytest_mock/__init__.py
src/pytest_mock/_version.py
src/pytest_mock/plugin.py
src/pytest_mock.egg-info/PKG-INFO
LICENSE
setup.py
We have to take in account those two distribution flavors in order to determine which
names should be considered for assertion rewriting.
More information:
https://github.com/pytest-dev/pytest-mock/issues/167
"""
package_files = list(package_files)
seen_some = False
for fn in package_files:
is_simple_module = "/" not in fn and fn.endswith(".py")
is_package = fn.count("/") == 1 and fn.endswith("__init__.py")
if is_simple_module:
module_name, _ = os.path.splitext(fn)
# we ignore "setup.py" at the root of the distribution
if module_name != "setup":
seen_some = True
yield module_name
elif is_package:
package_name = os.path.dirname(fn)
seen_some = True
yield package_name
if not seen_some:
# at this point we did not find any packages or modules suitable for assertion
# rewriting, so we try again by stripping the first path component (to account for
# "src" based source trees for example)
# this approach lets us have the common case continue to be fast, as egg-distributions
# are rarer
new_package_files = []
for fn in package_files:
parts = fn.split("/")
new_fn = "/".join(parts[1:])
if new_fn:
new_package_files.append(new_fn)
if new_package_files:
yield from _iter_rewritable_modules(new_package_files)
class Config:
"""
Access to configuration values, pluginmanager and plugin hooks.
:ivar PytestPluginManager pluginmanager: the plugin manager handles plugin registration and hook invocation.
:ivar argparse.Namespace option: access to command line option as attributes.
:ivar InvocationParams invocation_params:
Object containing the parameters regarding the ``pytest.main``
invocation.
Contains the following read-only attributes:
* ``args``: tuple of command-line arguments as passed to ``pytest.main()``.
* ``plugins``: list of extra plugins, might be None.
* ``dir``: directory where ``pytest.main()`` was invoked from.
"""
@attr.s(frozen=True)
class InvocationParams:
"""Holds parameters passed during ``pytest.main()``
.. versionadded:: 5.1
.. note::
Note that the environment variable ``PYTEST_ADDOPTS`` and the ``addopts``
ini option are handled by pytest, not being included in the ``args`` attribute.
Plugins accessing ``InvocationParams`` must be aware of that.
"""
args = attr.ib(converter=tuple)
plugins = attr.ib()
dir = attr.ib(type=Path)
def __init__(self, pluginmanager, *, invocation_params=None) -> None:
from .argparsing import Parser, FILE_OR_DIR
if invocation_params is None:
invocation_params = self.InvocationParams(
args=(), plugins=None, dir=Path().resolve()
)
self.option = argparse.Namespace()
self.invocation_params = invocation_params
_a = FILE_OR_DIR
self._parser = Parser(
usage="%(prog)s [options] [{}] [{}] [...]".format(_a, _a),
processopt=self._processopt,
)
self.pluginmanager = pluginmanager
self.trace = self.pluginmanager.trace.root.get("config")
self.hook = self.pluginmanager.hook
self._inicache = {} # type: Dict[str, Any]
self._override_ini = () # type: Sequence[str]
self._opt2dest = {} # type: Dict[str, str]
self._cleanup = [] # type: List[Callable[[], None]]
# A place where plugins can store information on the config for their
# own use. Currently only intended for internal plugins.
self._store = Store()
self.pluginmanager.register(self, "pytestconfig")
self._configured = False
self.hook.pytest_addoption.call_historic(
kwargs=dict(parser=self._parser, pluginmanager=self.pluginmanager)
)
if TYPE_CHECKING:
from _pytest.cacheprovider import Cache
self.cache = None # type: Optional[Cache]
@property
def invocation_dir(self):
"""Backward compatibility"""
return py.path.local(str(self.invocation_params.dir))
def add_cleanup(self, func):
""" Add a function to be called when the config object gets out of
use (usually coninciding with pytest_unconfigure)."""
self._cleanup.append(func)
def _do_configure(self):
assert not self._configured
self._configured = True
with warnings.catch_warnings():
warnings.simplefilter("default")
self.hook.pytest_configure.call_historic(kwargs=dict(config=self))
def _ensure_unconfigure(self):
if self._configured:
self._configured = False
self.hook.pytest_unconfigure(config=self)
self.hook.pytest_configure._call_history = []
while self._cleanup:
fin = self._cleanup.pop()
fin()
def get_terminal_writer(self):
return self.pluginmanager.get_plugin("terminalreporter")._tw
def pytest_cmdline_parse(self, pluginmanager, args):
try:
self.parse(args)
except UsageError:
# Handle --version and --help here in a minimal fashion.
# This gets done via helpconfig normally, but its
# pytest_cmdline_main is not called in case of errors.
if getattr(self.option, "version", False) or "--version" in args:
from _pytest.helpconfig import showversion
showversion(self)
elif (
getattr(self.option, "help", False) or "--help" in args or "-h" in args
):
self._parser._getparser().print_help()
sys.stdout.write(
"\nNOTE: displaying only minimal help due to UsageError.\n\n"
)
raise
return self
def notify_exception(self, excinfo, option=None):
if option and getattr(option, "fulltrace", False):
style = "long"
else:
style = "native"
excrepr = excinfo.getrepr(
funcargs=True, showlocals=getattr(option, "showlocals", False), style=style
)
res = self.hook.pytest_internalerror(excrepr=excrepr, excinfo=excinfo)
if not any(res):
for line in str(excrepr).split("\n"):
sys.stderr.write("INTERNALERROR> %s\n" % line)
sys.stderr.flush()
def cwd_relative_nodeid(self, nodeid):
# nodeid's are relative to the rootpath, compute relative to cwd
if self.invocation_dir != self.rootdir:
fullpath = self.rootdir.join(nodeid)
nodeid = self.invocation_dir.bestrelpath(fullpath)
return nodeid
@classmethod
def fromdictargs(cls, option_dict, args):
""" constructor usable for subprocesses. """
config = get_config(args)
config.option.__dict__.update(option_dict)
config.parse(args, addopts=False)
for x in config.option.plugins:
config.pluginmanager.consider_pluginarg(x)
return config
def _processopt(self, opt: "Argument") -> None:
for name in opt._short_opts + opt._long_opts:
self._opt2dest[name] = opt.dest
if hasattr(opt, "default"):
if not hasattr(self.option, opt.dest):
setattr(self.option, opt.dest, opt.default)
@hookimpl(trylast=True)
def pytest_load_initial_conftests(self, early_config):
self.pluginmanager._set_initial_conftests(early_config.known_args_namespace)
def _initini(self, args: Sequence[str]) -> None:
ns, unknown_args = self._parser.parse_known_and_unknown_args(
args, namespace=copy.copy(self.option)
)
r = determine_setup(
ns.inifilename,
ns.file_or_dir + unknown_args,
rootdir_cmd_arg=ns.rootdir or None,
config=self,
)
self.rootdir, self.inifile, self.inicfg = r
self._parser.extra_info["rootdir"] = self.rootdir
self._parser.extra_info["inifile"] = self.inifile
self._parser.addini("addopts", "extra command line options", "args")
self._parser.addini("minversion", "minimally required pytest version")
self._override_ini = ns.override_ini or ()
def _consider_importhook(self, args: Sequence[str]) -> None:
"""Install the PEP 302 import hook if using assertion rewriting.
Needs to parse the --assert=<mode> option from the commandline
and find all the installed plugins to mark them for rewriting
by the importhook.
"""
ns, unknown_args = self._parser.parse_known_and_unknown_args(args)
mode = getattr(ns, "assertmode", "plain")
if mode == "rewrite":
import _pytest.assertion
try:
hook = _pytest.assertion.install_importhook(self)
except SystemError:
mode = "plain"
else:
self._mark_plugins_for_rewrite(hook)
_warn_about_missing_assertion(mode)
def _mark_plugins_for_rewrite(self, hook):
"""
Given an importhook, mark for rewrite any top-level
modules or packages in the distribution package for
all pytest plugins.
"""
self.pluginmanager.rewrite_hook = hook
if os.environ.get("PYTEST_DISABLE_PLUGIN_AUTOLOAD"):
# We don't autoload from setuptools entry points, no need to continue.
return
package_files = (
str(file)
for dist in importlib_metadata.distributions()
if any(ep.group == "pytest11" for ep in dist.entry_points)
for file in dist.files or []
)
for name in _iter_rewritable_modules(package_files):
hook.mark_rewrite(name)
def _validate_args(self, args: List[str], via: str) -> List[str]:
"""Validate known args."""
self._parser._config_source_hint = via # type: ignore
try:
self._parser.parse_known_and_unknown_args(
args, namespace=copy.copy(self.option)
)
finally:
del self._parser._config_source_hint # type: ignore
return args
def _preparse(self, args: List[str], addopts: bool = True) -> None:
if addopts:
env_addopts = os.environ.get("PYTEST_ADDOPTS", "")
if len(env_addopts):
args[:] = (
self._validate_args(shlex.split(env_addopts), "via PYTEST_ADDOPTS")
+ args
)
self._initini(args)
if addopts:
args[:] = (
self._validate_args(self.getini("addopts"), "via addopts config") + args
)
self._checkversion()
self._consider_importhook(args)
self.pluginmanager.consider_preparse(args, exclude_only=False)
if not os.environ.get("PYTEST_DISABLE_PLUGIN_AUTOLOAD"):
# Don't autoload from setuptools entry point. Only explicitly specified
# plugins are going to be loaded.
self.pluginmanager.load_setuptools_entrypoints("pytest11")
self.pluginmanager.consider_env()
self.known_args_namespace = ns = self._parser.parse_known_args(
args, namespace=copy.copy(self.option)
)
if self.known_args_namespace.confcutdir is None and self.inifile:
confcutdir = py.path.local(self.inifile).dirname
self.known_args_namespace.confcutdir = confcutdir
try:
self.hook.pytest_load_initial_conftests(
early_config=self, args=args, parser=self._parser
)
except ConftestImportFailure as e:
if ns.help or ns.version:
# we don't want to prevent --help/--version to work
# so just let is pass and print a warning at the end
from _pytest.warnings import _issue_warning_captured
_issue_warning_captured(
PytestConfigWarning(
"could not load initial conftests: {}".format(e.path)
),
self.hook,
stacklevel=2,
)
else:
raise
def _checkversion(self):
import pytest
minver = self.inicfg.get("minversion", None)
if minver:
if Version(minver) > Version(pytest.__version__):
raise pytest.UsageError(
"%s:%d: requires pytest-%s, actual pytest-%s'"
% (
self.inicfg.config.path,
self.inicfg.lineof("minversion"),
minver,
pytest.__version__,
)
)
def parse(self, args: List[str], addopts: bool = True) -> None:
# parse given cmdline arguments into this config object.
assert not hasattr(
self, "args"
), "can only parse cmdline args at most once per Config object"
self.hook.pytest_addhooks.call_historic(
kwargs=dict(pluginmanager=self.pluginmanager)
)
self._preparse(args, addopts=addopts)
# XXX deprecated hook:
self.hook.pytest_cmdline_preparse(config=self, args=args)
self._parser.after_preparse = True # type: ignore
try:
args = self._parser.parse_setoption(
args, self.option, namespace=self.option
)
if not args:
if self.invocation_dir == self.rootdir:
args = self.getini("testpaths")
if not args:
args = [str(self.invocation_dir)]
self.args = args
except PrintHelp:
pass
def addinivalue_line(self, name, line):
""" add a line to an ini-file option. The option must have been
declared but might not yet be set in which case the line becomes the
the first line in its value. """
x = self.getini(name)
assert isinstance(x, list)
x.append(line) # modifies the cached list inline
def getini(self, name: str):
""" return configuration value from an :ref:`ini file <inifiles>`. If the
specified name hasn't been registered through a prior
:py:func:`parser.addini <_pytest.config.argparsing.Parser.addini>`
call (usually from a plugin), a ValueError is raised. """
try:
return self._inicache[name]
except KeyError:
self._inicache[name] = val = self._getini(name)
return val
def _getini(self, name: str) -> Any:
try:
description, type, default = self._parser._inidict[name]
except KeyError:
raise ValueError("unknown configuration value: {!r}".format(name))
value = self._get_override_ini_value(name)
if value is None:
try:
value = self.inicfg[name]
except KeyError:
if default is not None:
return default
if type is None:
return ""
return []
if type == "pathlist":
dp = py.path.local(self.inicfg.config.path).dirpath()
values = []
for relpath in shlex.split(value):
values.append(dp.join(relpath, abs=True))
return values
elif type == "args":
return shlex.split(value)
elif type == "linelist":
return [t for t in map(lambda x: x.strip(), value.split("\n")) if t]
elif type == "bool":
return bool(_strtobool(value.strip()))
else:
assert type is None
return value
def _getconftest_pathlist(self, name, path):
try:
mod, relroots = self.pluginmanager._rget_with_confmod(name, path)
except KeyError:
return None
modpath = py.path.local(mod.__file__).dirpath()
values = []
for relroot in relroots:
if not isinstance(relroot, py.path.local):
relroot = relroot.replace("/", py.path.local.sep)
relroot = modpath.join(relroot, abs=True)
values.append(relroot)
return values
def _get_override_ini_value(self, name: str) -> Optional[str]:
value = None
# override_ini is a list of "ini=value" options
# always use the last item if multiple values are set for same ini-name,
# e.g. -o foo=bar1 -o foo=bar2 will set foo to bar2
for ini_config in self._override_ini:
try:
key, user_ini_value = ini_config.split("=", 1)
except ValueError:
raise UsageError(
"-o/--override-ini expects option=value style (got: {!r}).".format(
ini_config
)
)
else:
if key == name:
value = user_ini_value
return value
def getoption(self, name: str, default=notset, skip: bool = False):
""" return command line option value.
:arg name: name of the option. You may also specify
the literal ``--OPT`` option instead of the "dest" option name.
:arg default: default value if no option of that name exists.
:arg skip: if True raise pytest.skip if option does not exists
or has a None value.
"""
name = self._opt2dest.get(name, name)
try:
val = getattr(self.option, name)
if val is None and skip:
raise AttributeError(name)
return val
except AttributeError:
if default is not notset:
return default
if skip:
import pytest
pytest.skip("no {!r} option found".format(name))
raise ValueError("no option named {!r}".format(name))
def getvalue(self, name, path=None):
""" (deprecated, use getoption()) """
return self.getoption(name)
def getvalueorskip(self, name, path=None):
""" (deprecated, use getoption(skip=True)) """
return self.getoption(name, skip=True)
def _assertion_supported():
try:
assert False
except AssertionError:
return True
else:
return False
def _warn_about_missing_assertion(mode):
if not _assertion_supported():
if mode == "plain":
sys.stderr.write(
"WARNING: ASSERTIONS ARE NOT EXECUTED"
" and FAILING TESTS WILL PASS. Are you"
" using python -O?"
)
else:
sys.stderr.write(
"WARNING: assertions not in test modules or"
" plugins will be ignored"
" because assert statements are not executed "
"by the underlying Python interpreter "
"(are you using python -O?)\n"
)
def create_terminal_writer(config: Config, *args, **kwargs) -> TerminalWriter:
"""Create a TerminalWriter instance configured according to the options
in the config object. Every code which requires a TerminalWriter object
and has access to a config object should use this function.
"""
tw = TerminalWriter(*args, **kwargs)
if config.option.color == "yes":
tw.hasmarkup = True
if config.option.color == "no":
tw.hasmarkup = False
return tw
def _strtobool(val):
"""Convert a string representation of truth to true (1) or false (0).
True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values
are 'n', 'no', 'f', 'false', 'off', and '0'. Raises ValueError if
'val' is anything else.
.. note:: copied from distutils.util
"""
val = val.lower()
if val in ("y", "yes", "t", "true", "on", "1"):
return 1
elif val in ("n", "no", "f", "false", "off", "0"):
return 0
else:
raise ValueError("invalid truth value {!r}".format(val))