308 lines
10 KiB
Python
308 lines
10 KiB
Python
"""
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test collection nodes, forming a tree, Items are leafs.
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"""
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import py
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__all__ = ['Collector', 'Item', 'File', 'Directory']
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def configproperty(name):
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def fget(self):
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#print "retrieving %r property from %s" %(name, self.fspath)
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return self.config._getcollectclass(name, self.fspath)
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return property(fget)
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class HookProxy:
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def __init__(self, node):
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self.node = node
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def __getattr__(self, name):
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if name[0] == "_":
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raise AttributeError(name)
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hookmethod = getattr(self.node.config.hook, name)
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def call_matching_hooks(**kwargs):
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plugins = self.node.config._getmatchingplugins(self.node.fspath)
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return hookmethod.pcall(plugins, **kwargs)
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return call_matching_hooks
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class Node(object):
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""" base class for all Nodes in the collection tree.
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Collector subclasses have children, Items are terminal nodes."""
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def __init__(self, name, parent=None, config=None, collection=None):
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#: a unique name with the scope of the parent
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self.name = name
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#: the parent collector node.
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self.parent = parent
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#: the test config object
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self.config = config or parent.config
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#: the collection this node is part of.
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self.collection = collection or getattr(parent, 'collection', None)
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#: the file where this item is contained/collected from.
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self.fspath = getattr(parent, 'fspath', None)
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self.ihook = HookProxy(self)
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self.keywords = self.readkeywords()
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def __repr__(self):
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if getattr(self.config.option, 'debug', False):
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return "<%s %r %0x>" %(self.__class__.__name__,
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getattr(self, 'name', None), id(self))
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else:
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return "<%s %r>" %(self.__class__.__name__,
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getattr(self, 'name', None))
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# methods for ordering nodes
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def __eq__(self, other):
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if not isinstance(other, Node):
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return False
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return self.__class__ == other.__class__ and \
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self.name == other.name and self.parent == other.parent
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash((self.name, self.parent))
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def setup(self):
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pass
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def teardown(self):
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pass
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def _memoizedcall(self, attrname, function):
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exattrname = "_ex_" + attrname
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failure = getattr(self, exattrname, None)
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if failure is not None:
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py.builtin._reraise(failure[0], failure[1], failure[2])
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if hasattr(self, attrname):
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return getattr(self, attrname)
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try:
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res = function()
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except py.builtin._sysex:
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raise
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except:
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failure = py.std.sys.exc_info()
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setattr(self, exattrname, failure)
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raise
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setattr(self, attrname, res)
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return res
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def listchain(self):
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""" return list of all parent collectors up to self,
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starting from root of collection tree. """
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l = [self]
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while 1:
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x = l[0]
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if x.parent is not None: # and x.parent.parent is not None:
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l.insert(0, x.parent)
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else:
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return l
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def listnames(self):
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return [x.name for x in self.listchain()]
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def getparent(self, cls):
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current = self
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while current and not isinstance(current, cls):
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current = current.parent
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return current
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def readkeywords(self):
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return dict([(x, True) for x in self._keywords()])
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def _keywords(self):
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return [self.name]
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def _prunetraceback(self, traceback):
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return traceback
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def _repr_failure_py(self, excinfo, style=None):
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if self.config.option.fulltrace:
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style="long"
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else:
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excinfo.traceback = self._prunetraceback(excinfo.traceback)
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# XXX should excinfo.getrepr record all data and toterminal()
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# process it?
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if style is None:
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if self.config.option.tbstyle == "short":
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style = "short"
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else:
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style = "long"
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return excinfo.getrepr(funcargs=True,
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showlocals=self.config.option.showlocals,
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style=style)
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repr_failure = _repr_failure_py
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class Collector(Node):
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""" Collector instances create children through collect()
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and thus iteratively build a tree.
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"""
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Directory = configproperty('Directory')
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Module = configproperty('Module')
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class CollectError(Exception):
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""" an error during collection, contains a custom message. """
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def collect(self):
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""" returns a list of children (items and collectors)
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for this collection node.
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"""
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raise NotImplementedError("abstract")
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def collect_by_name(self, name):
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""" return a child matching the given name, else None. """
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for colitem in self._memocollect():
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if colitem.name == name:
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return colitem
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def repr_failure(self, excinfo):
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""" represent a failure. """
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if excinfo.errisinstance(self.CollectError):
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exc = excinfo.value
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return str(exc.args[0])
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return self._repr_failure_py(excinfo, style="short")
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def _memocollect(self):
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""" internal helper method to cache results of calling collect(). """
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return self._memoizedcall('_collected', self.collect)
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def _prunetraceback(self, traceback):
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if hasattr(self, 'fspath'):
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path = self.fspath
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ntraceback = traceback.cut(path=self.fspath)
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if ntraceback == traceback:
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ntraceback = ntraceback.cut(excludepath=py._pydir)
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traceback = ntraceback.filter()
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return traceback
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# **********************************************************************
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# DEPRECATED METHODS
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# **********************************************************************
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def _deprecated_collect(self):
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# avoid recursion:
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# collect -> _deprecated_collect -> custom run() ->
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# super().run() -> collect
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attrname = '_depcollectentered'
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if hasattr(self, attrname):
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return
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setattr(self, attrname, True)
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method = getattr(self.__class__, 'run', None)
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if method is not None and method != Collector.run:
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warnoldcollect(function=method)
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names = self.run()
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return [x for x in [self.join(name) for name in names] if x]
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def run(self):
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""" DEPRECATED: returns a list of names available from this collector.
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You can return an empty list. Callers of this method
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must take care to catch exceptions properly.
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"""
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return [colitem.name for colitem in self._memocollect()]
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def join(self, name):
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""" DEPRECATED: return a child collector or item for the given name.
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If the return value is None there is no such child.
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"""
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return self.collect_by_name(name)
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class FSCollector(Collector):
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def __init__(self, fspath, parent=None, config=None, collection=None):
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fspath = py.path.local(fspath)
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super(FSCollector, self).__init__(fspath.basename,
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parent, config, collection)
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self.fspath = fspath
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class File(FSCollector):
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""" base class for collecting tests from a file. """
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class Directory(FSCollector):
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def recfilter(self, path):
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if path.check(dir=1, dotfile=0):
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return path.basename not in ('CVS', '_darcs', '{arch}')
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def collect(self):
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l = self._deprecated_collect()
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if l is not None:
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return l
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l = []
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for path in self.fspath.listdir(sort=True):
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res = self.consider(path)
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if res is not None:
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if isinstance(res, (list, tuple)):
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l.extend(res)
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else:
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l.append(res)
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return l
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def consider(self, path):
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if self.ihook.pytest_ignore_collect(path=path, config=self.config):
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return
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if path.check(file=1):
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res = self.consider_file(path)
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elif path.check(dir=1):
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res = self.consider_dir(path)
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else:
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res = None
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if isinstance(res, list):
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# throw out identical results
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l = []
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for x in res:
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if x not in l:
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assert x.parent == self, (x.parent, self)
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assert x.fspath == path, (x.fspath, path)
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l.append(x)
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res = l
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return res
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def consider_file(self, path):
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return self.ihook.pytest_collect_file(path=path, parent=self)
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def consider_dir(self, path, usefilters=None):
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if usefilters is not None:
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py.log._apiwarn("0.99", "usefilters argument not needed")
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return self.ihook.pytest_collect_directory(path=path, parent=self)
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class Item(Node):
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""" a basic test invocation item. Note that for a single function
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there might be multiple test invocation items. Attributes:
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"""
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def _deprecated_testexecution(self):
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if self.__class__.run != Item.run:
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warnoldtestrun(function=self.run)
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elif self.__class__.execute != Item.execute:
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warnoldtestrun(function=self.execute)
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else:
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return False
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self.run()
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return True
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def run(self):
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""" deprecated, here because subclasses might call it. """
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return self.execute(self.obj)
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def execute(self, obj):
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""" deprecated, here because subclasses might call it. """
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return obj()
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def reportinfo(self):
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return self.fspath, None, ""
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def warnoldcollect(function=None):
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py.log._apiwarn("1.0",
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"implement collector.collect() instead of "
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"collector.run() and collector.join()",
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stacklevel=2, function=function)
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def warnoldtestrun(function=None):
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py.log._apiwarn("1.0",
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"implement item.runtest() instead of "
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"item.run() and item.execute()",
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stacklevel=2, function=function)
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