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How to use matches_with_reason method in tox

Best Python code snippet using tox_python

venv.py

Source:venv.py

...64                alwayscopy,65            )66        except Exception:67            return None68    def matches_with_reason(self, other, deps_matches_subset=False):69        for attr in (70            "base_resolved_python_md5",71            "base_resolved_python_path",72            "tox_version",73            "sitepackages",74            "usedevelop",75            "alwayscopy",76        ):77            left = getattr(self, attr)78            right = getattr(other, attr)79            if left != right:80                return False, "attr {} {!r}!={!r}".format(attr, left, right)81        self_deps = set(self.deps)82        other_deps = set(other.deps)83        if self_deps != other_deps:84            if deps_matches_subset:85                diff = other_deps - self_deps86                if diff:87                    return False, "missing in previous {!r}".format(diff)88            else:89                return False, "{!r}!={!r}".format(self_deps, other_deps)90        return True, None91    def matches(self, other, deps_matches_subset=False):92        outcome, _ = self.matches_with_reason(other, deps_matches_subset)93        return outcome94class VirtualEnv(object):95    def __init__(self, envconfig=None, session=None):96        self.envconfig = envconfig97        self.session = session98    @property99    def hook(self):100        return self.envconfig.config.pluginmanager.hook101    @property102    def path(self):103        """ Path to environment base dir. """104        return self.envconfig.envdir105    @property106    def path_config(self):107        return self.path.join(".tox-config1")108    @property109    def name(self):110        """ test environment name. """111        return self.envconfig.envname112    def __repr__(self):113        return "<VirtualEnv at {!r}>".format(self.path)114    def getcommandpath(self, name, venv=True, cwd=None):115        """ Return absolute path (str or localpath) for specified command name.116        - If it's a local path we will rewrite it as as a relative path.117        - If venv is True we will check if the command is coming from the venv118          or is whitelisted to come from external.119        """120        name = str(name)121        if os.path.isabs(name):122            return name123        if os.path.split(name)[0] == ".":124            path = cwd.join(name)125            if path.check():126                return str(path)127        if venv:128            path = self._venv_lookup_and_check_external_whitelist(name)129        else:130            path = self._normal_lookup(name)131        if path is None:132            raise tox.exception.InvocationError("could not find executable {!r}".format(name))133        return str(path)  # will not be rewritten for reporting134    def _venv_lookup_and_check_external_whitelist(self, name):135        path = self._venv_lookup(name)136        if path is None:137            path = self._normal_lookup(name)138            if path is not None:139                self._check_external_allowed_and_warn(path)140        return path141    def _venv_lookup(self, name):142        return py.path.local.sysfind(name, paths=[self.envconfig.envbindir])143    def _normal_lookup(self, name):144        return py.path.local.sysfind(name)145    def _check_external_allowed_and_warn(self, path):146        if not self.is_allowed_external(path):147            self.session.report.warning(148                "test command found but not installed in testenv\n"149                "  cmd: {}\n"150                "  env: {}\n"151                "Maybe you forgot to specify a dependency? "152                "See also the whitelist_externals envconfig setting.".format(153                    path, self.envconfig.envdir154                )155            )156    def is_allowed_external(self, p):157        tryadd = [""]158        if tox.INFO.IS_WIN:159            tryadd += [os.path.normcase(x) for x in os.environ["PATHEXT"].split(os.pathsep)]160            p = py.path.local(os.path.normcase(str(p)))161        for x in self.envconfig.whitelist_externals:162            for add in tryadd:163                if p.fnmatch(x + add):164                    return True165        return False166    def update(self, action):167        """ return status string for updating actual venv to match configuration.168            if status string is empty, all is ok.169        """170        rconfig = CreationConfig.readconfig(self.path_config)171        if self.envconfig.recreate:172            reason = "-r flag"173        else:174            if rconfig is None:175                reason = "no previous config {}".format(self.path_config)176            else:177                live_config = self._getliveconfig()178                deps_subset_match = getattr(self.envconfig, "deps_matches_subset", False)179                outcome, reason = rconfig.matches_with_reason(live_config, deps_subset_match)180        if reason is None:181            action.info("reusing", self.envconfig.envdir)182            return183        action.info("cannot reuse", reason)184        if rconfig is None:185            action.setactivity("create", self.envconfig.envdir)186        else:187            action.setactivity("recreate", self.envconfig.envdir)188        try:189            self.hook.tox_testenv_create(action=action, venv=self)190            self.just_created = True191        except tox.exception.UnsupportedInterpreter as exception:192            return exception193        try:...

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