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""" core implementation of testing process: init, session, runtest loop. """ 

import imp 

import os 

import re 

import sys 

 

import _pytest 

import _pytest._code 

import py 

import pytest 

try: 

    from collections import MutableMapping as MappingMixin 

except ImportError: 

    from UserDict import DictMixin as MappingMixin 

 

from _pytest.runner import collect_one_node 

 

tracebackcutdir = py.path.local(_pytest.__file__).dirpath() 

 

# exitcodes for the command line 

EXIT_OK = 0 

EXIT_TESTSFAILED = 1 

EXIT_INTERRUPTED = 2 

EXIT_INTERNALERROR = 3 

EXIT_USAGEERROR = 4 

EXIT_NOTESTSCOLLECTED = 5 

 

name_re = re.compile("^[a-zA-Z_]\w*$") 

 

def pytest_addoption(parser): 

    parser.addini("norecursedirs", "directory patterns to avoid for recursion", 

        type="args", default=['.*', 'CVS', '_darcs', '{arch}', '*.egg']) 

    parser.addini("testpaths", "directories to search for tests when no files or directories are given in the command line.", 

        type="args", default=[]) 

    #parser.addini("dirpatterns", 

    #    "patterns specifying possible locations of test files", 

    #    type="linelist", default=["**/test_*.txt", 

    #            "**/test_*.py", "**/*_test.py"] 

    #) 

    group = parser.getgroup("general", "running and selection options") 

    group._addoption('-x', '--exitfirst', action="store_true", default=False, 

               dest="exitfirst", 

               help="exit instantly on first error or failed test."), 

    group._addoption('--maxfail', metavar="num", 

               action="store", type=int, dest="maxfail", default=0, 

               help="exit after first num failures or errors.") 

    group._addoption('--strict', action="store_true", 

               help="run pytest in strict mode, warnings become errors.") 

    group._addoption("-c", metavar="file", type=str, dest="inifilename", 

               help="load configuration from `file` instead of trying to locate one of the implicit configuration files.") 

 

    group = parser.getgroup("collect", "collection") 

    group.addoption('--collectonly', '--collect-only', action="store_true", 

        help="only collect tests, don't execute them."), 

    group.addoption('--pyargs', action="store_true", 

        help="try to interpret all arguments as python packages.") 

    group.addoption("--ignore", action="append", metavar="path", 

        help="ignore path during collection (multi-allowed).") 

    # when changing this to --conf-cut-dir, config.py Conftest.setinitial 

    # needs upgrading as well 

    group.addoption('--confcutdir', dest="confcutdir", default=None, 

        metavar="dir", 

        help="only load conftest.py's relative to specified dir.") 

    group.addoption('--noconftest', action="store_true", 

        dest="noconftest", default=False, 

        help="Don't load any conftest.py files.") 

 

    group = parser.getgroup("debugconfig", 

        "test session debugging and configuration") 

    group.addoption('--basetemp', dest="basetemp", default=None, metavar="dir", 

               help="base temporary directory for this test run.") 

 

 

def pytest_namespace(): 

    collect = dict(Item=Item, Collector=Collector, File=File, Session=Session) 

    return dict(collect=collect) 

 

def pytest_configure(config): 

    pytest.config = config # compatibiltiy 

81    if config.option.exitfirst: 

        config.option.maxfail = 1 

 

def wrap_session(config, doit): 

    """Skeleton command line program""" 

    session = Session(config) 

    session.exitstatus = EXIT_OK 

    initstate = 0 

    try: 

        try: 

            config._do_configure() 

            initstate = 1 

            config.hook.pytest_sessionstart(session=session) 

            initstate = 2 

            session.exitstatus = doit(config, session) or 0 

        except pytest.UsageError: 

            raise 

        except KeyboardInterrupt: 

            excinfo = _pytest._code.ExceptionInfo() 

            config.hook.pytest_keyboard_interrupt(excinfo=excinfo) 

            session.exitstatus = EXIT_INTERRUPTED 

        except: 

            excinfo = _pytest._code.ExceptionInfo() 

            config.notify_exception(excinfo, config.option) 

            session.exitstatus = EXIT_INTERNALERROR 

            if excinfo.errisinstance(SystemExit): 

                sys.stderr.write("mainloop: caught Spurious SystemExit!\n") 

 

    finally: 

        excinfo = None  # Explicitly break reference cycle. 

        session.startdir.chdir() 

115        if initstate >= 2: 

            config.hook.pytest_sessionfinish( 

                session=session, 

                exitstatus=session.exitstatus) 

        config._ensure_unconfigure() 

    return session.exitstatus 

 

def pytest_cmdline_main(config): 

    return wrap_session(config, _main) 

 

def _main(config, session): 

    """ default command line protocol for initialization, session, 

    running tests and reporting. """ 

    config.hook.pytest_collection(session=session) 

    config.hook.pytest_runtestloop(session=session) 

 

128    if session.testsfailed: 

        return EXIT_TESTSFAILED 

130    elif session.testscollected == 0: 

        return EXIT_NOTESTSCOLLECTED 

 

def pytest_collection(session): 

    return session.perform_collect() 

 

def pytest_runtestloop(session): 

137    if session.config.option.collectonly: 

        return True 

 

    def getnextitem(i): 

        # this is a function to avoid python2 

        # keeping sys.exc_info set when calling into a test 

        # python2 keeps sys.exc_info till the frame is left 

        try: 

            return session.items[i+1] 

        except IndexError: 

            return None 

 

    for i, item in enumerate(session.items): 

        nextitem = getnextitem(i) 

        item.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem) 

152        if session.shouldstop: 

            raise session.Interrupted(session.shouldstop) 

    return True 

 

def pytest_ignore_collect(path, config): 

    p = path.dirpath() 

    ignore_paths = config._getconftest_pathlist("collect_ignore", path=p) 

    ignore_paths = ignore_paths or [] 

    excludeopt = config.getoption("ignore") 

161    if excludeopt: 

        ignore_paths.extend([py.path.local(x) for x in excludeopt]) 

    return path in ignore_paths 

 

class FSHookProxy: 

    def __init__(self, fspath, pm, remove_mods): 

        self.fspath = fspath 

        self.pm = pm 

        self.remove_mods = remove_mods 

 

    def __getattr__(self, name): 

        x = self.pm.subset_hook_caller(name, remove_plugins=self.remove_mods) 

        self.__dict__[name] = x 

        return x 

 

def compatproperty(name): 

    def fget(self): 

        # deprecated - use pytest.name 

        return getattr(pytest, name) 

 

    return property(fget) 

 

class NodeKeywords(MappingMixin): 

    def __init__(self, node): 

        self.node = node 

        self.parent = node.parent 

        self._markers = {node.name: True} 

 

    def __getitem__(self, key): 

        try: 

            return self._markers[key] 

        except KeyError: 

            if self.parent is None: 

                raise 

            return self.parent.keywords[key] 

 

    def __setitem__(self, key, value): 

        self._markers[key] = value 

 

    def __delitem__(self, key): 

        raise ValueError("cannot delete key in keywords dict") 

 

    def __iter__(self): 

        seen = set(self._markers) 

        if self.parent is not None: 

            seen.update(self.parent.keywords) 

        return iter(seen) 

 

    def __len__(self): 

        return len(self.__iter__()) 

 

    def keys(self): 

        return list(self) 

 

    def __repr__(self): 

        return "<NodeKeywords for node %s>" % (self.node, ) 

 

 

class Node(object): 

    """ base class for Collector and Item the test collection tree. 

    Collector subclasses have children, Items are terminal nodes.""" 

 

    def __init__(self, name, parent=None, config=None, session=None): 

        #: a unique name within the scope of the parent node 

        self.name = name 

 

        #: the parent collector node. 

        self.parent = parent 

 

        #: the pytest config object 

        self.config = config or parent.config 

 

        #: the session this node is part of 

        self.session = session or parent.session 

 

        #: filesystem path where this node was collected from (can be None) 

        self.fspath = getattr(parent, 'fspath', None) 

 

        #: keywords/markers collected from all scopes 

        self.keywords = NodeKeywords(self) 

 

        #: allow adding of extra keywords to use for matching 

        self.extra_keyword_matches = set() 

 

        # used for storing artificial fixturedefs for direct parametrization 

        self._name2pseudofixturedef = {} 

 

    @property 

    def ihook(self): 

        """ fspath sensitive hook proxy used to call pytest hooks""" 

        return self.session.gethookproxy(self.fspath) 

 

    Module = compatproperty("Module") 

    Class = compatproperty("Class") 

    Instance = compatproperty("Instance") 

    Function = compatproperty("Function") 

    File = compatproperty("File") 

    Item = compatproperty("Item") 

 

    def _getcustomclass(self, name): 

        cls = getattr(self, name) 

        if cls != getattr(pytest, name): 

            py.log._apiwarn("2.0", "use of node.%s is deprecated, " 

                "use pytest_pycollect_makeitem(...) to create custom " 

                "collection nodes" % name) 

        return cls 

 

    def __repr__(self): 

        return "<%s %r>" %(self.__class__.__name__, 

                           getattr(self, 'name', None)) 

 

    def warn(self, code, message): 

        """ generate a warning with the given code and message for this 

        item. """ 

        assert isinstance(code, str) 

        fslocation = getattr(self, "location", None) 

        if fslocation is None: 

            fslocation = getattr(self, "fspath", None) 

        else: 

            fslocation = "%s:%s" % fslocation[:2] 

 

        self.ihook.pytest_logwarning.call_historic(kwargs=dict( 

            code=code, message=message, 

            nodeid=self.nodeid, fslocation=fslocation)) 

 

    # methods for ordering nodes 

    @property 

    def nodeid(self): 

        """ a ::-separated string denoting its collection tree address. """ 

        try: 

            return self._nodeid 

        except AttributeError: 

            self._nodeid = x = self._makeid() 

            return x 

 

    def _makeid(self): 

        return self.parent.nodeid + "::" + self.name 

 

    def __hash__(self): 

        return hash(self.nodeid) 

 

    def setup(self): 

        pass 

 

    def teardown(self): 

        pass 

 

    def _memoizedcall(self, attrname, function): 

        exattrname = "_ex_" + attrname 

        failure = getattr(self, exattrname, None) 

311        if failure is not None: 

            py.builtin._reraise(failure[0], failure[1], failure[2]) 

313        if hasattr(self, attrname): 

            return getattr(self, attrname) 

        try: 

            res = function() 

        except py.builtin._sysex: 

            raise 

        except: 

            failure = sys.exc_info() 

            setattr(self, exattrname, failure) 

            raise 

        setattr(self, attrname, res) 

        return res 

 

    def listchain(self): 

        """ return list of all parent collectors up to self, 

            starting from root of collection tree. """ 

        chain = [] 

        item = self 

        while item is not None: 

            chain.append(item) 

            item = item.parent 

        chain.reverse() 

        return chain 

 

    def add_marker(self, marker): 

        """ dynamically add a marker object to the node. 

 

        ``marker`` can be a string or pytest.mark.* instance. 

        """ 

        from _pytest.mark import MarkDecorator 

        if isinstance(marker, py.builtin._basestring): 

            marker = MarkDecorator(marker) 

        elif not isinstance(marker, MarkDecorator): 

            raise ValueError("is not a string or pytest.mark.* Marker") 

        self.keywords[marker.name] = marker 

 

    def get_marker(self, name): 

        """ get a marker object from this node or None if 

        the node doesn't have a marker with that name. """ 

        val = self.keywords.get(name, None) 

        if val is not None: 

            from _pytest.mark import MarkInfo, MarkDecorator 

            if isinstance(val, (MarkDecorator, MarkInfo)): 

                return val 

 

    def listextrakeywords(self): 

        """ Return a set of all extra keywords in self and any parents.""" 

        extra_keywords = set() 

        item = self 

        for item in self.listchain(): 

            extra_keywords.update(item.extra_keyword_matches) 

        return extra_keywords 

 

    def listnames(self): 

        return [x.name for x in self.listchain()] 

 

    def addfinalizer(self, fin): 

        """ register a function to be called when this node is finalized. 

 

        This method can only be called when this node is active 

        in a setup chain, for example during self.setup(). 

        """ 

        self.session._setupstate.addfinalizer(fin, self) 

 

    def getparent(self, cls): 

        """ get the next parent node (including ourself) 

        which is an instance of the given class""" 

        current = self 

        while current and not isinstance(current, cls): 

            current = current.parent 

        return current 

 

    def _prunetraceback(self, excinfo): 

        pass 

 

    def _repr_failure_py(self, excinfo, style=None): 

        fm = self.session._fixturemanager 

        if excinfo.errisinstance(fm.FixtureLookupError): 

            return excinfo.value.formatrepr() 

        tbfilter = True 

        if self.config.option.fulltrace: 

            style="long" 

        else: 

            self._prunetraceback(excinfo) 

            tbfilter = False  # prunetraceback already does it 

            if style == "auto": 

                style = "long" 

        # XXX should excinfo.getrepr record all data and toterminal() process it? 

        if style is None: 

            if self.config.option.tbstyle == "short": 

                style = "short" 

            else: 

                style = "long" 

 

        return excinfo.getrepr(funcargs=True, 

                               showlocals=self.config.option.showlocals, 

                               style=style, tbfilter=tbfilter) 

 

    repr_failure = _repr_failure_py 

 

class Collector(Node): 

    """ Collector instances create children through collect() 

        and thus iteratively build a tree. 

    """ 

 

    class CollectError(Exception): 

        """ an error during collection, contains a custom message. """ 

 

    def collect(self): 

        """ returns a list of children (items and collectors) 

            for this collection node. 

        """ 

        raise NotImplementedError("abstract") 

 

    def repr_failure(self, excinfo): 

        """ represent a collection failure. """ 

        if excinfo.errisinstance(self.CollectError): 

            exc = excinfo.value 

            return str(exc.args[0]) 

        return self._repr_failure_py(excinfo, style="short") 

 

    def _memocollect(self): 

        """ internal helper method to cache results of calling collect(). """ 

        return self._memoizedcall('_collected', lambda: list(self.collect())) 

 

    def _prunetraceback(self, excinfo): 

        if hasattr(self, 'fspath'): 

            traceback = excinfo.traceback 

            ntraceback = traceback.cut(path=self.fspath) 

            if ntraceback == traceback: 

                ntraceback = ntraceback.cut(excludepath=tracebackcutdir) 

            excinfo.traceback = ntraceback.filter() 

 

class FSCollector(Collector): 

    def __init__(self, fspath, parent=None, config=None, session=None): 

        fspath = py.path.local(fspath) # xxx only for test_resultlog.py? 

        name = fspath.basename 

        if parent is not None: 

            rel = fspath.relto(parent.fspath) 

453            if rel: 

                name = rel 

            name = name.replace(os.sep, "/") 

        super(FSCollector, self).__init__(name, parent, config, session) 

        self.fspath = fspath 

 

    def _makeid(self): 

        relpath = self.fspath.relto(self.config.rootdir) 

460        if os.sep != "/": 

            relpath = relpath.replace(os.sep, "/") 

        return relpath 

 

class File(FSCollector): 

    """ base class for collecting tests from a file. """ 

 

class Item(Node): 

    """ a basic test invocation item. Note that for a single function 

    there might be multiple test invocation items. 

    """ 

    nextitem = None 

 

    def __init__(self, name, parent=None, config=None, session=None): 

        super(Item, self).__init__(name, parent, config, session) 

        self._report_sections = [] 

 

    def add_report_section(self, when, key, content): 

478        if content: 

            self._report_sections.append((when, key, content)) 

 

    def reportinfo(self): 

        return self.fspath, None, "" 

 

    @property 

    def location(self): 

        try: 

            return self._location 

        except AttributeError: 

            location = self.reportinfo() 

            # bestrelpath is a quite slow function 

            cache = self.config.__dict__.setdefault("_bestrelpathcache", {}) 

            try: 

                fspath = cache[location[0]] 

            except KeyError: 

                fspath = self.session.fspath.bestrelpath(location[0]) 

                cache[location[0]] = fspath 

            location = (fspath, location[1], str(location[2])) 

            self._location = location 

            return location 

 

class NoMatch(Exception): 

    """ raised if matching cannot locate a matching names. """ 

 

class Interrupted(KeyboardInterrupt): 

    """ signals an interrupted test run. """ 

    __module__ = 'builtins' # for py3 

 

class Session(FSCollector): 

    Interrupted = Interrupted 

 

    def __init__(self, config): 

        FSCollector.__init__(self, config.rootdir, parent=None, 

                             config=config, session=self) 

        self._fs2hookproxy = {} 

        self.testsfailed = 0 

        self.testscollected = 0 

        self.shouldstop = False 

        self.trace = config.trace.root.get("collection") 

        self._norecursepatterns = config.getini("norecursedirs") 

        self.startdir = py.path.local() 

        self.config.pluginmanager.register(self, name="session") 

 

    def _makeid(self): 

        return "" 

 

    @pytest.hookimpl(tryfirst=True) 

    def pytest_collectstart(self): 

528        if self.shouldstop: 

            raise self.Interrupted(self.shouldstop) 

 

    @pytest.hookimpl(tryfirst=True) 

    def pytest_runtest_logreport(self, report): 

533        if report.failed and not hasattr(report, 'wasxfail'): 

            self.testsfailed += 1 

            maxfail = self.config.getvalue("maxfail") 

            if maxfail and self.testsfailed >= maxfail: 

                self.shouldstop = "stopping after %d failures" % ( 

                    self.testsfailed) 

    pytest_collectreport = pytest_runtest_logreport 

 

    def isinitpath(self, path): 

        return path in self._initialpaths 

 

    def gethookproxy(self, fspath): 

        try: 

            return self._fs2hookproxy[fspath] 

        except KeyError: 

            # check if we have the common case of running 

            # hooks with all conftest.py filesall conftest.py 

            pm = self.config.pluginmanager 

            my_conftestmodules = pm._getconftestmodules(fspath) 

            remove_mods = pm._conftest_plugins.difference(my_conftestmodules) 

554            if remove_mods: 

                # one or more conftests are not in use at this fspath 

                proxy = FSHookProxy(fspath, pm, remove_mods) 

            else: 

                # all plugis are active for this fspath 

                proxy = self.config.hook 

 

            self._fs2hookproxy[fspath] = proxy 

            return proxy 

 

    def perform_collect(self, args=None, genitems=True): 

        hook = self.config.hook 

        try: 

            items = self._perform_collect(args, genitems) 

            hook.pytest_collection_modifyitems(session=self, 

                config=self.config, items=items) 

        finally: 

            hook.pytest_collection_finish(session=self) 

        self.testscollected = len(items) 

        return items 

 

    def _perform_collect(self, args, genitems): 

576        if args is None: 

            args = self.config.args 

        self.trace("perform_collect", self, args) 

        self.trace.root.indent += 1 

        self._notfound = [] 

        self._initialpaths = set() 

        self._initialparts = [] 

        self.items = items = [] 

        for arg in args: 

            parts = self._parsearg(arg) 

            self._initialparts.append(parts) 

            self._initialpaths.add(parts[0]) 

        rep = collect_one_node(self) 

        self.ihook.pytest_collectreport(report=rep) 

        self.trace.root.indent -= 1 

590        if self._notfound: 

            errors = [] 

            for arg, exc in self._notfound: 

                line = "(no name %r in any of %r)" % (arg, exc.args[0]) 

                errors.append("not found: %s\n%s" % (arg, line)) 

                #XXX: test this 

            raise pytest.UsageError(*errors) 

597        if not genitems: 

            return rep.result 

        else: 

602            if rep.passed: 

                for node in rep.result: 

                    self.items.extend(self.genitems(node)) 

            return items 

 

    def collect(self): 

        for parts in self._initialparts: 

            arg = "::".join(map(str, parts)) 

            self.trace("processing argument", arg) 

            self.trace.root.indent += 1 

            try: 

                for x in self._collect(arg): 

                    yield x 

            except NoMatch: 

                # we are inside a make_report hook so 

                # we cannot directly pass through the exception 

                self._notfound.append((arg, sys.exc_info()[1])) 

 

            self.trace.root.indent -= 1 

 

    def _collect(self, arg): 

        names = self._parsearg(arg) 

        path = names.pop(0) 

629        if path.check(dir=1): 

            assert not names, "invalid arg %r" %(arg,) 

            for path in path.visit(fil=lambda x: x.check(file=1), 

                                   rec=self._recurse, bf=True, sort=True): 

                for x in self._collectfile(path): 

                    yield x 

        else: 

            assert path.check(file=1) 

            for x in self.matchnodes(self._collectfile(path), names): 

                yield x 

 

    def _collectfile(self, path): 

        ihook = self.gethookproxy(path) 

638        if not self.isinitpath(path): 

637            if ihook.pytest_ignore_collect(path=path, config=self.config): 

                return () 

        return ihook.pytest_collect_file(path=path, parent=self) 

 

    def _recurse(self, path): 

        ihook = self.gethookproxy(path.dirpath()) 

643        if ihook.pytest_ignore_collect(path=path, config=self.config): 

            return 

        for pat in self._norecursepatterns: 

646            if path.check(fnmatch=pat): 

                return False 

        ihook = self.gethookproxy(path) 

        ihook.pytest_collect_directory(path=path, parent=self) 

        return True 

 

    def _tryconvertpyarg(self, x): 

        mod = None 

        path = [os.path.abspath('.')] + sys.path 

        for name in x.split('.'): 

            # ignore anything that's not a proper name here 

            # else something like --pyargs will mess up '.' 

            # since imp.find_module will actually sometimes work for it 

            # but it's supposed to be considered a filesystem path 

            # not a package 

            if name_re.match(name) is None: 

                return x 

            try: 

                fd, mod, type_ = imp.find_module(name, path) 

            except ImportError: 

                return x 

            else: 

                if fd is not None: 

                    fd.close() 

 

            if type_[2] != imp.PKG_DIRECTORY: 

                path = [os.path.dirname(mod)] 

            else: 

                path = [mod] 

        return mod 

 

    def _parsearg(self, arg): 

        """ return (fspath, names) tuple after checking the file exists. """ 

        arg = str(arg) 

680        if self.config.option.pyargs: 

            arg = self._tryconvertpyarg(arg) 

        parts = str(arg).split("::") 

        relpath = parts[0].replace("/", os.sep) 

        path = self.config.invocation_dir.join(relpath, abs=True) 

685        if not path.check(): 

            if self.config.option.pyargs: 

                msg = "file or package not found: " 

            else: 

                msg = "file not found: " 

            raise pytest.UsageError(msg + arg) 

        parts[0] = path 

        return parts 

 

    def matchnodes(self, matching, names): 

        self.trace("matchnodes", matching, names) 

        self.trace.root.indent += 1 

        nodes = self._matchnodes(matching, names) 

        num = len(nodes) 

        self.trace("matchnodes finished -> ", num, "nodes") 

        self.trace.root.indent -= 1 

        if num == 0: 

            raise NoMatch(matching, names[:1]) 

        return nodes 

 

    def _matchnodes(self, matching, names): 

        if not matching or not names: 

            return matching 

        name = names[0] 

        assert name 

        nextnames = names[1:] 

        resultnodes = [] 

        for node in matching: 

            if isinstance(node, pytest.Item): 

                if not names: 

                    resultnodes.append(node) 

                continue 

            assert isinstance(node, pytest.Collector) 

            rep = collect_one_node(node) 

            if rep.passed: 

                has_matched = False 

                for x in rep.result: 

                    # TODO: remove parametrized workaround once collection structure contains parametrization 

                    if x.name == name or x.name.split("[")[0] == name: 

                        resultnodes.extend(self.matchnodes([x], nextnames)) 

                        has_matched = True 

                # XXX accept IDs that don't have "()" for class instances 

                if not has_matched and len(rep.result) == 1 and x.name == "()": 

                    nextnames.insert(0, name) 

                    resultnodes.extend(self.matchnodes([x], nextnames)) 

            node.ihook.pytest_collectreport(report=rep) 

        return resultnodes 

 

    def genitems(self, node): 

        self.trace("genitems", node) 

        if isinstance(node, pytest.Item): 

            node.ihook.pytest_itemcollected(item=node) 

            yield node 

        else: 

            assert isinstance(node, pytest.Collector) 

            rep = collect_one_node(node) 

744            if rep.passed: 

                for subnode in rep.result: 

                    for x in self.genitems(subnode): 

                        yield x 

            node.ihook.pytest_collectreport(report=rep)