Source code for _pytest.config

""" command line options, ini-file and conftest.py processing. """
from __future__ import absolute_import, division, print_function
import argparse
import shlex
import traceback
import types
import warnings

import py
# DON't import pytest here because it causes import cycle troubles
import sys
import os
import _pytest._code
import _pytest.hookspec  # the extension point definitions
import _pytest.assertion
from _pytest._pluggy import PluginManager, HookimplMarker, HookspecMarker
from _pytest.compat import safe_str

hookimpl = HookimplMarker("pytest")
hookspec = HookspecMarker("pytest")

# pytest startup
#


class ConftestImportFailure(Exception):
    def __init__(self, path, excinfo):
        Exception.__init__(self, path, excinfo)
        self.path = path
        self.excinfo = excinfo

    def __str__(self):
        etype, evalue, etb = self.excinfo
        formatted = traceback.format_tb(etb)
        # The level of the tracebacks we want to print is hand crafted :(
        return repr(evalue) + '\n' + ''.join(formatted[2:])


[docs]def main(args=None, plugins=None): """ 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: tw = py.io.TerminalWriter(sys.stderr) for line in traceback.format_exception(*e.excinfo): tw.line(line.rstrip(), red=True) tw.line("ERROR: could not load %s\n" % (e.path), red=True) return 4 else: try: return config.hook.pytest_cmdline_main(config=config) finally: config._ensure_unconfigure() except UsageError as e: for msg in e.args: sys.stderr.write("ERROR: %s\n" % (msg,)) return 4
class cmdline: # compatibility namespace main = staticmethod(main) class UsageError(Exception): """ error in pytest usage or invocation""" class PrintHelp(Exception): """Raised when pytest should print it's help to skip the rest of the argument parsing and validation.""" pass 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("{0} must be a filename, given: {1}".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("{0} must be a directory, given: {1}".format(optname, path)) return path _preinit = [] default_plugins = ( "mark main terminal runner python fixtures debugging unittest capture skipping " "tmpdir monkeypatch recwarn pastebin helpconfig nose assertion " "junitxml resultlog doctest cacheprovider freeze_support " "setuponly setupplan warnings").split() builtin_plugins = set(default_plugins) builtin_plugins.add("pytester") def _preloadplugins(): assert not _preinit _preinit.append(get_config()) def get_config(): if _preinit: return _preinit.pop(0) # subsequent calls to main will create a fresh instance pluginmanager = PytestPluginManager() config = Config(pluginmanager) for spec in default_plugins: pluginmanager.import_plugin(spec) return config
[docs]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=None, plugins=None): warning = None if args is None: args = sys.argv[1:] elif isinstance(args, py.path.local): args = [str(args)] elif not isinstance(args, (tuple, list)): if not isinstance(args, str): raise ValueError("not a string or argument list: %r" % (args,)) args = shlex.split(args, posix=sys.platform != "win32") from _pytest import deprecated warning = deprecated.MAIN_STR_ARGS config = get_config() pluginmanager = config.pluginmanager try: if plugins: for plugin in plugins: if isinstance(plugin, py.builtin._basestring): pluginmanager.consider_pluginarg(plugin) else: pluginmanager.register(plugin) if warning: config.warn('C1', warning) return pluginmanager.hook.pytest_cmdline_parse( pluginmanager=pluginmanager, args=args) except BaseException: config._ensure_unconfigure() raise
[docs]class PytestPluginManager(PluginManager): """ Overwrites :py:class:`pluggy.PluginManager <_pytest.vendored_packages.pluggy.PluginManager>` to add pytest-specific functionality: * loading plugins from the command line, ``PYTEST_PLUGIN`` env variable and ``pytest_plugins`` global variables found in plugins being loaded; * ``conftest.py`` loading during start-up; """ def __init__(self): super(PytestPluginManager, self).__init__("pytest", implprefix="pytest_") self._conftest_plugins = set() # state related to local conftest plugins self._path2confmods = {} self._conftestpath2mod = {} self._confcutdir = None self._noconftest = False self._duplicatepaths = set() 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()
[docs] def addhooks(self, module_or_class): """ .. deprecated:: 2.8 Use :py:meth:`pluggy.PluginManager.add_hookspecs <_pytest.vendored_packages.pluggy.PluginManager.add_hookspecs>` instead. """ warning = dict(code="I2", fslocation=_pytest._code.getfslineno(sys._getframe(1)), nodeid=None, message="use pluginmanager.add_hookspecs instead of " "deprecated addhooks() method.") self._warn(warning) return self.add_hookspecs(module_or_class)
[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 some historic special names which can not be hooks anyway if name == "pytest_plugins" or name.startswith("pytest_funcarg__"): return method = getattr(plugin, name) opts = super(PytestPluginManager, self).parse_hookimpl_opts(plugin, name) if opts is not None: for name in ("tryfirst", "trylast", "optionalhook", "hookwrapper"): opts.setdefault(name, hasattr(method, name)) return opts
[docs] def parse_hookspec_opts(self, module_or_class, name): opts = super(PytestPluginManager, self).parse_hookspec_opts( module_or_class, name) if opts is None: method = getattr(module_or_class, name) if name.startswith("pytest_"): opts = {"firstresult": hasattr(method, "firstresult"), "historic": hasattr(method, "historic")} return opts
def _verify_hook(self, hook, hookmethod): super(PytestPluginManager, self)._verify_hook(hook, hookmethod) if "__multicall__" in hookmethod.argnames: fslineno = _pytest._code.getfslineno(hookmethod.function) warning = dict(code="I1", fslocation=fslineno, nodeid=None, message="%r hook uses deprecated __multicall__ " "argument" % (hook.name)) self._warn(warning)
[docs] def register(self, plugin, name=None): ret = super(PytestPluginManager, self).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.")
def _warn(self, message): kwargs = message if isinstance(message, dict) else { 'code': 'I1', 'message': message, 'fslocation': None, 'nodeid': None, } self.hook.pytest_logwarning.call_historic(kwargs=kwargs) # # 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 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) def _getconftestmodules(self, path): if self._noconftest: return [] try: return self._path2confmods[path] except KeyError: if path.isfile(): clist = self._getconftestmodules(path.dirpath()) else: # 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 path.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._path2confmods[path] = 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): try: return self._conftestpath2mod[conftestpath] except KeyError: pkgpath = conftestpath.pypkgpath() if pkgpath is None: _ensure_removed_sysmodule(conftestpath.purebasename) try: mod = conftestpath.pyimport() except Exception: raise ConftestImportFailure(conftestpath, sys.exc_info()) self._conftest_plugins.add(mod) self._conftestpath2mod[conftestpath] = mod dirpath = conftestpath.dirpath() if dirpath in self._path2confmods: for path, mods in self._path2confmods.items(): if path and path.relto(dirpath) or path == dirpath: assert mod not in mods mods.append(mod) self.trace("loaded conftestmodule %r" % (mod)) self.consider_conftest(mod) return mod # # API for bootstrapping plugin loading # #
[docs] def consider_preparse(self, args): for opt1, opt2 in zip(args, args[1:]): if opt1 == "-p": self.consider_pluginarg(opt2)
[docs] def consider_pluginarg(self, arg): if arg.startswith("no:"): name = arg[3:] self.set_blocked(name) if not name.startswith("pytest_"): self.set_blocked("pytest_" + name) else: self.import_plugin(arg)
[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): # 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, (py.builtin.text, str)), "module name as text required, got %r" % modname modname = str(modname) if self.get_plugin(modname) is not None: return if modname in builtin_plugins: importspec = "_pytest." + modname else: importspec = modname self.rewrite_hook.mark_rewrite(importspec) try: __import__(importspec) except ImportError as e: new_exc = ImportError('Error importing plugin "%s": %s' % (modname, safe_str(e.args[0]))) # copy over name and path attributes for attr in ('name', 'path'): if hasattr(e, attr): setattr(new_exc, attr, getattr(e, attr)) raise new_exc except Exception as e: import pytest if not hasattr(pytest, 'skip') or not isinstance(e, pytest.skip.Exception): raise self._warn("skipped plugin %r: %s" % ((modname, e.msg))) 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: 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 []
[docs]class Parser: """ Parser for command line arguments and ini-file values. :ivar extra_info: dict of generic param -> value to display in case there's an error processing the command line arguments. """ def __init__(self, usage=None, processopt=None): self._anonymous = OptionGroup("custom options", parser=self) self._groups = [] self._processopt = processopt self._usage = usage self._inidict = {} self._ininames = [] self.extra_info = {} def processoption(self, option): if self._processopt: if option.dest: self._processopt(option)
[docs] def getgroup(self, name, description="", after=None): """ get (or create) a named option Group. :name: name of the option group. :description: long description for --help output. :after: name of other group, used for ordering --help output. The returned group object has an ``addoption`` method with the same signature as :py:func:`parser.addoption <_pytest.config.Parser.addoption>` but will be shown in the respective group in the output of ``pytest. --help``. """ for group in self._groups: if group.name == name: return group group = OptionGroup(name, description, parser=self) i = 0 for i, grp in enumerate(self._groups): if grp.name == after: break self._groups.insert(i + 1, group) return group
[docs] def addoption(self, *opts, **attrs): """ register a command line option. :opts: option names, can be short or long options. :attrs: same attributes which the ``add_option()`` function of the `argparse library <http://docs.python.org/2/library/argparse.html>`_ accepts. After command line parsing options are available on the pytest config object via ``config.option.NAME`` where ``NAME`` is usually set by passing a ``dest`` attribute, for example ``addoption("--long", dest="NAME", ...)``. """ self._anonymous.addoption(*opts, **attrs)
def parse(self, args, namespace=None): from _pytest._argcomplete import try_argcomplete self.optparser = self._getparser() try_argcomplete(self.optparser) return self.optparser.parse_args([str(x) for x in args], namespace=namespace) def _getparser(self): from _pytest._argcomplete import filescompleter optparser = MyOptionParser(self, self.extra_info) groups = self._groups + [self._anonymous] for group in groups: if group.options: desc = group.description or group.name arggroup = optparser.add_argument_group(desc) for option in group.options: n = option.names() a = option.attrs() arggroup.add_argument(*n, **a) # bash like autocompletion for dirs (appending '/') optparser.add_argument(FILE_OR_DIR, nargs='*').completer = filescompleter return optparser def parse_setoption(self, args, option, namespace=None): parsedoption = self.parse(args, namespace=namespace) for name, value in parsedoption.__dict__.items(): setattr(option, name, value) return getattr(parsedoption, FILE_OR_DIR)
[docs] def parse_known_args(self, args, namespace=None): """parses and returns a namespace object with known arguments at this point. """ return self.parse_known_and_unknown_args(args, namespace=namespace)[0]
[docs] def parse_known_and_unknown_args(self, args, namespace=None): """parses and returns a namespace object with known arguments, and the remaining arguments unknown at this point. """ optparser = self._getparser() args = [str(x) for x in args] return optparser.parse_known_args(args, namespace=namespace)
[docs] def addini(self, name, help, type=None, default=None): """ register an ini-file option. :name: name of the ini-variable :type: type of the variable, can be ``pathlist``, ``args``, ``linelist`` or ``bool``. :default: default value if no ini-file option exists but is queried. The value of ini-variables can be retrieved via a call to :py:func:`config.getini(name) <_pytest.config.Config.getini>`. """ assert type in (None, "pathlist", "args", "linelist", "bool") self._inidict[name] = (help, type, default) self._ininames.append(name)
class ArgumentError(Exception): """ Raised if an Argument instance is created with invalid or inconsistent arguments. """ def __init__(self, msg, option): self.msg = msg self.option_id = str(option) def __str__(self): if self.option_id: return "option %s: %s" % (self.option_id, self.msg) else: return self.msg class Argument: """class that mimics the necessary behaviour of optparse.Option its currently a least effort implementation and ignoring choices and integer prefixes https://docs.python.org/3/library/optparse.html#optparse-standard-option-types """ _typ_map = { 'int': int, 'string': str, 'float': float, 'complex': complex, } def __init__(self, *names, **attrs): """store parms in private vars for use in add_argument""" self._attrs = attrs self._short_opts = [] self._long_opts = [] self.dest = attrs.get('dest') if '%default' in (attrs.get('help') or ''): warnings.warn( 'pytest now uses argparse. "%default" should be' ' changed to "%(default)s" ', DeprecationWarning, stacklevel=3) try: typ = attrs['type'] except KeyError: pass else: # this might raise a keyerror as well, don't want to catch that if isinstance(typ, py.builtin._basestring): if typ == 'choice': warnings.warn( 'type argument to addoption() is a string %r.' ' For parsearg this is optional and when supplied' ' should be a type.' ' (options: %s)' % (typ, names), DeprecationWarning, stacklevel=3) # argparse expects a type here take it from # the type of the first element attrs['type'] = type(attrs['choices'][0]) else: warnings.warn( 'type argument to addoption() is a string %r.' ' For parsearg this should be a type.' ' (options: %s)' % (typ, names), DeprecationWarning, stacklevel=3) attrs['type'] = Argument._typ_map[typ] # used in test_parseopt -> test_parse_defaultgetter self.type = attrs['type'] else: self.type = typ try: # attribute existence is tested in Config._processopt self.default = attrs['default'] except KeyError: pass self._set_opt_strings(names) if not self.dest: if self._long_opts: self.dest = self._long_opts[0][2:].replace('-', '_') else: try: self.dest = self._short_opts[0][1:] except IndexError: raise ArgumentError( 'need a long or short option', self) def names(self): return self._short_opts + self._long_opts def attrs(self): # update any attributes set by processopt attrs = 'default dest help'.split() if self.dest: attrs.append(self.dest) for attr in attrs: try: self._attrs[attr] = getattr(self, attr) except AttributeError: pass if self._attrs.get('help'): a = self._attrs['help'] a = a.replace('%default', '%(default)s') # a = a.replace('%prog', '%(prog)s') self._attrs['help'] = a return self._attrs def _set_opt_strings(self, opts): """directly from optparse might not be necessary as this is passed to argparse later on""" for opt in opts: if len(opt) < 2: raise ArgumentError( "invalid option string %r: " "must be at least two characters long" % opt, self) elif len(opt) == 2: if not (opt[0] == "-" and opt[1] != "-"): raise ArgumentError( "invalid short option string %r: " "must be of the form -x, (x any non-dash char)" % opt, self) self._short_opts.append(opt) else: if not (opt[0:2] == "--" and opt[2] != "-"): raise ArgumentError( "invalid long option string %r: " "must start with --, followed by non-dash" % opt, self) self._long_opts.append(opt) def __repr__(self): args = [] if self._short_opts: args += ['_short_opts: ' + repr(self._short_opts)] if self._long_opts: args += ['_long_opts: ' + repr(self._long_opts)] args += ['dest: ' + repr(self.dest)] if hasattr(self, 'type'): args += ['type: ' + repr(self.type)] if hasattr(self, 'default'): args += ['default: ' + repr(self.default)] return 'Argument({0})'.format(', '.join(args)) class OptionGroup: def __init__(self, name, description="", parser=None): self.name = name self.description = description self.options = [] self.parser = parser def addoption(self, *optnames, **attrs): """ add an option to this group. if a shortened version of a long option is specified it will be suppressed in the help. addoption('--twowords', '--two-words') results in help showing '--two-words' only, but --twowords gets accepted **and** the automatic destination is in args.twowords """ conflict = set(optnames).intersection( name for opt in self.options for name in opt.names()) if conflict: raise ValueError("option names %s already added" % conflict) option = Argument(*optnames, **attrs) self._addoption_instance(option, shortupper=False) def _addoption(self, *optnames, **attrs): option = Argument(*optnames, **attrs) self._addoption_instance(option, shortupper=True) def _addoption_instance(self, option, shortupper=False): if not shortupper: for opt in option._short_opts: if opt[0] == '-' and opt[1].islower(): raise ValueError("lowercase shortoptions reserved") if self.parser: self.parser.processoption(option) self.options.append(option) class MyOptionParser(argparse.ArgumentParser): def __init__(self, parser, extra_info=None): if not extra_info: extra_info = {} self._parser = parser argparse.ArgumentParser.__init__(self, usage=parser._usage, add_help=False, formatter_class=DropShorterLongHelpFormatter) # extra_info is a dict of (param -> value) to display if there's # an usage error to provide more contextual information to the user self.extra_info = extra_info def parse_args(self, args=None, namespace=None): """allow splitting of positional arguments""" args, argv = self.parse_known_args(args, namespace) if argv: for arg in argv: if arg and arg[0] == '-': lines = ['unrecognized arguments: %s' % (' '.join(argv))] for k, v in sorted(self.extra_info.items()): lines.append(' %s: %s' % (k, v)) self.error('\n'.join(lines)) getattr(args, FILE_OR_DIR).extend(argv) return args class DropShorterLongHelpFormatter(argparse.HelpFormatter): """shorten help for long options that differ only in extra hyphens - collapse **long** options that are the same except for extra hyphens - special action attribute map_long_option allows surpressing additional long options - shortcut if there are only two options and one of them is a short one - cache result on action object as this is called at least 2 times """ def _format_action_invocation(self, action): orgstr = argparse.HelpFormatter._format_action_invocation(self, action) if orgstr and orgstr[0] != '-': # only optional arguments return orgstr res = getattr(action, '_formatted_action_invocation', None) if res: return res options = orgstr.split(', ') if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2): # a shortcut for '-h, --help' or '--abc', '-a' action._formatted_action_invocation = orgstr return orgstr return_list = [] option_map = getattr(action, 'map_long_option', {}) if option_map is None: option_map = {} short_long = {} for option in options: if len(option) == 2 or option[2] == ' ': continue if not option.startswith('--'): raise ArgumentError('long optional argument without "--": [%s]' % (option), self) xxoption = option[2:] if xxoption.split()[0] not in option_map: shortened = xxoption.replace('-', '') if shortened not in short_long or \ len(short_long[shortened]) < len(xxoption): short_long[shortened] = xxoption # now short_long has been filled out to the longest with dashes # **and** we keep the right option ordering from add_argument for option in options: if len(option) == 2 or option[2] == ' ': return_list.append(option) if option[2:] == short_long.get(option.replace('-', '')): return_list.append(option.replace(' ', '=', 1)) action._formatted_action_invocation = ', '.join(return_list) return action._formatted_action_invocation def _ensure_removed_sysmodule(modname): try: del sys.modules[modname] except KeyError: pass class CmdOptions(object): """ holds cmdline options as attributes.""" def __init__(self, values=()): self.__dict__.update(values) def __repr__(self): return "<CmdOptions %r>" % (self.__dict__,) def copy(self): return CmdOptions(self.__dict__) class Notset: def __repr__(self): return "<NOTSET>" notset = Notset() FILE_OR_DIR = 'file_or_dir' def _iter_rewritable_modules(package_files): 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) yield module_name elif is_package: package_name = os.path.dirname(fn) yield package_name
[docs]class Config(object): """ access to configuration values, pluginmanager and plugin hooks. """ def __init__(self, pluginmanager): #: access to command line option as attributes. #: (deprecated), use :py:func:`getoption() <_pytest.config.Config.getoption>` instead self.option = CmdOptions() _a = FILE_OR_DIR self._parser = Parser( usage="%%(prog)s [options] [%s] [%s] [...]" % (_a, _a), processopt=self._processopt, ) #: a pluginmanager instance self.pluginmanager = pluginmanager self.trace = self.pluginmanager.trace.root.get("config") self.hook = self.pluginmanager.hook self._inicache = {} self._override_ini = () self._opt2dest = {} self._cleanup = [] self._warn = self.pluginmanager._warn self.pluginmanager.register(self, "pytestconfig") self._configured = False def do_setns(dic): import pytest setns(pytest, dic) self.hook.pytest_namespace.call_historic(do_setns, {}) self.hook.pytest_addoption.call_historic(kwargs=dict(parser=self._parser))
[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 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()
[docs] def warn(self, code, message, fslocation=None, nodeid=None): """ generate a warning for this test session. """ self.hook.pytest_logwarning.call_historic(kwargs=dict( code=code, message=message, fslocation=fslocation, nodeid=nodeid))
def get_terminal_writer(self): return self.pluginmanager.get_plugin("terminalreporter")._tw def pytest_cmdline_parse(self, pluginmanager, args): # REF1 assert self == pluginmanager.config, (self, pluginmanager.config) self.parse(args) return self def notify_exception(self, excinfo, option=None): if option and option.fulltrace: 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 py.builtin.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
[docs] def fromdictargs(cls, option_dict, args): """ constructor useable for subprocesses. """ config = get_config() 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): for name in opt._short_opts + opt._long_opts: self._opt2dest[name] = opt.dest if hasattr(opt, 'default') and opt.dest: 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): ns, unknown_args = self._parser.parse_known_and_unknown_args(args, namespace=self.option.copy()) r = determine_setup(ns.inifilename, ns.file_or_dir + unknown_args, warnfunc=self.warn) self.rootdir, self.inifile, self.inicfg = r self._parser.extra_info['rootdir'] = self.rootdir self._parser.extra_info['inifile'] = self.inifile self.invocation_dir = py.path.local() 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): """Install the PEP 302 import hook if using assertion re-writing. Needs to parse the --assert=<mode> option from the commandline and find all the installed plugins to mark them for re-writing by the importhook. """ ns, unknown_args = self._parser.parse_known_and_unknown_args(args) mode = ns.assertmode if mode == 'rewrite': try: hook = _pytest.assertion.install_importhook(self) except SystemError: mode = 'plain' else: self._mark_plugins_for_rewrite(hook) self._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. """ import pkg_resources self.pluginmanager.rewrite_hook = hook # 'RECORD' available for plugins installed normally (pip install) # 'SOURCES.txt' available for plugins installed in dev mode (pip install -e) # for installed plugins 'SOURCES.txt' returns an empty list, and vice-versa # so it shouldn't be an issue metadata_files = 'RECORD', 'SOURCES.txt' package_files = ( entry.split(',')[0] for entrypoint in pkg_resources.iter_entry_points('pytest11') for metadata in metadata_files for entry in entrypoint.dist._get_metadata(metadata) ) for name in _iter_rewritable_modules(package_files): hook.mark_rewrite(name) def _warn_about_missing_assertion(self, mode): try: assert False except AssertionError: pass else: 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 _preparse(self, args, addopts=True): self._initini(args) if addopts: args[:] = shlex.split(os.environ.get('PYTEST_ADDOPTS', '')) + args args[:] = self.getini("addopts") + args self._checkversion() self._consider_importhook(args) self.pluginmanager.consider_preparse(args) self.pluginmanager.load_setuptools_entrypoints('pytest11') self.pluginmanager.consider_env() self.known_args_namespace = ns = self._parser.parse_known_args(args, namespace=self.option.copy()) 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: e = sys.exc_info()[1] 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 self._warn("could not load initial conftests (%s)\n" % e.path) else: raise def _checkversion(self): import pytest minver = self.inicfg.get('minversion', None) if minver: ver = minver.split(".") myver = pytest.__version__.split(".") if myver < ver: 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, addopts=True): # 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._origargs = args 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 try: args = self._parser.parse_setoption(args, self.option, namespace=self.option) if not args: cwd = os.getcwd() if cwd == self.rootdir: args = self.getini('testpaths') if not args: args = [cwd] 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): """ 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.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): try: description, type, default = self._parser._inidict[name] except KeyError: raise ValueError("unknown configuration value: %r" % (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() l = [] for relpath in shlex.split(value): l.append(dp.join(relpath, abs=True)) return l 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() l = [] for relroot in relroots: if not isinstance(relroot, py.path.local): relroot = relroot.replace("/", py.path.local.sep) relroot = modpath.join(relroot, abs=True) l.append(relroot) return l def _get_override_ini_value(self, name): value = None # override_ini is a list of list, to support both -o foo1=bar1 foo2=bar2 and # and -o foo1=bar1 -o foo2=bar2 options # always use the last item if multiple value set for same ini-name, # e.g. -o foo=bar1 -o foo=bar2 will set foo to bar2 for ini_config_list in self._override_ini: for ini_config in ini_config_list: try: (key, user_ini_value) = ini_config.split("=", 1) except ValueError: raise UsageError("-o/--override-ini expects option=value style.") if key == name: value = user_ini_value return value
[docs] def getoption(self, name, default=notset, skip=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" % (name,)) raise ValueError("no option named %r" % (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 exists(path, ignore=EnvironmentError): try: return path.check() except ignore: return False def getcfg(args, warnfunc=None): """ Search the list of arguments for a valid ini-file for pytest, and return a tuple of (rootdir, inifile, cfg-dict). note: warnfunc is an optional function used to warn about ini-files that use deprecated features. This parameter should be removed when pytest adopts standard deprecation warnings (#1804). """ from _pytest.deprecated import SETUP_CFG_PYTEST inibasenames = ["pytest.ini", "tox.ini", "setup.cfg"] args = [x for x in args if not str(x).startswith("-")] if not args: args = [py.path.local()] for arg in args: arg = py.path.local(arg) for base in arg.parts(reverse=True): for inibasename in inibasenames: p = base.join(inibasename) if exists(p): iniconfig = py.iniconfig.IniConfig(p) if 'pytest' in iniconfig.sections: if inibasename == 'setup.cfg' and warnfunc: warnfunc('C1', SETUP_CFG_PYTEST) return base, p, iniconfig['pytest'] if inibasename == 'setup.cfg' and 'tool:pytest' in iniconfig.sections: return base, p, iniconfig['tool:pytest'] elif inibasename == "pytest.ini": # allowed to be empty return base, p, {} return None, None, None def get_common_ancestor(paths): common_ancestor = None for path in paths: if not path.exists(): continue if common_ancestor is None: common_ancestor = path else: if path.relto(common_ancestor) or path == common_ancestor: continue elif common_ancestor.relto(path): common_ancestor = path else: shared = path.common(common_ancestor) if shared is not None: common_ancestor = shared if common_ancestor is None: common_ancestor = py.path.local() elif common_ancestor.isfile(): common_ancestor = common_ancestor.dirpath() return common_ancestor def get_dirs_from_args(args): def is_option(x): return str(x).startswith('-') def get_file_part_from_node_id(x): return str(x).split('::')[0] def get_dir_from_path(path): if path.isdir(): return path return py.path.local(path.dirname) # These look like paths but may not exist possible_paths = ( py.path.local(get_file_part_from_node_id(arg)) for arg in args if not is_option(arg) ) return [ get_dir_from_path(path) for path in possible_paths if path.exists() ] def determine_setup(inifile, args, warnfunc=None): dirs = get_dirs_from_args(args) if inifile: iniconfig = py.iniconfig.IniConfig(inifile) try: inicfg = iniconfig["pytest"] except KeyError: inicfg = None rootdir = get_common_ancestor(dirs) else: ancestor = get_common_ancestor(dirs) rootdir, inifile, inicfg = getcfg([ancestor], warnfunc=warnfunc) if rootdir is None: for rootdir in ancestor.parts(reverse=True): if rootdir.join("setup.py").exists(): break else: rootdir, inifile, inicfg = getcfg(dirs, warnfunc=warnfunc) if rootdir is None: rootdir = get_common_ancestor([py.path.local(), ancestor]) is_fs_root = os.path.splitdrive(str(rootdir))[1] == '/' if is_fs_root: rootdir = ancestor return rootdir, inifile, inicfg or {} def setns(obj, dic): import pytest for name, value in dic.items(): if isinstance(value, dict): mod = getattr(obj, name, None) if mod is None: modname = "pytest.%s" % name mod = types.ModuleType(modname) sys.modules[modname] = mod mod.__all__ = [] setattr(obj, name, mod) obj.__all__.append(name) setns(mod, value) else: setattr(obj, name, value) obj.__all__.append(name) # if obj != pytest: # pytest.__all__.append(name) setattr(pytest, name, value) def create_terminal_writer(config, *args, **kwargs): """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 = py.io.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" % (val,))