Source code for _pytest.config

""" command line options, ini-file and 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 import Store
from _pytest.warning_types import PytestConfigWarning

    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")

[docs]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]
[docs]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" "" ) fail(msg.format(conftestpath, confcutdir), pytrace=False)
[docs]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; * ```` 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 =, 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
[docs] 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 # known_marks = { 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
[docs] 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 # known_marks = { 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
[docs] 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
[docs] def getplugin(self, name): # support deprecated naming because plugins (xdist e.g.) use it return self.get_plugin(name)
[docs] def hasplugin(self, name): """Return True if the plugin with the given name is registered.""" return bool(self.get_plugin(name))
[docs] 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("") 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 # #
[docs] 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)
[docs] 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)
[docs] def consider_conftest(self, conftestmodule): self.register(conftestmodule, name=conftestmodule.__file__)
[docs] def consider_env(self): self._import_plugin_specs(os.environ.get("PYTEST_PLUGINS"))
[docs] 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)
[docs] 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/" 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/ pytest_mock/ pytest_mock/ pytest_mock.egg-info/PKG-INFO Here are the file names as seen in an egg based distribution: src/pytest_mock/ src/pytest_mock/ src/pytest_mock/ src/pytest_mock.egg-info/PKG-INFO LICENSE We have to take in account those two distribution flavors in order to determine which names should be considered for assertion rewriting. More information: """ 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("") if is_simple_module: module_name, _ = os.path.splitext(fn) # we ignore "" 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)
[docs]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. """
[docs] @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))
[docs] 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
[docs] @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( == "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 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
[docs] 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
[docs] 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
[docs] 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))
[docs] def getvalue(self, name, path=None): """ (deprecated, use getoption()) """ return self.getoption(name)
[docs] 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))