488 lines
17 KiB
Python
488 lines
17 KiB
Python
""" core implementation of testing process: init, collection, runtest loop. """
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import py
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import pytest
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import os, sys
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tracebackcutdir = py.path.local(pytest.__file__).dirpath()
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# exitcodes for the command line
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EXIT_OK = 0
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EXIT_TESTSFAILED = 1
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EXIT_INTERRUPTED = 2
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EXIT_INTERNALERROR = 3
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def pytest_addoption(parser):
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parser.addini("norecursedirs", "directory patterns to avoid for recursion",
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type="args", default=('.*', 'CVS', '_darcs', '{arch}'))
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#parser.addini("dirpatterns",
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# "patterns specifying possible locations of test files",
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# type="linelist", default=["**/test_*.txt",
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# "**/test_*.py", "**/*_test.py"]
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#)
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group = parser.getgroup("general", "running and selection options")
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group._addoption('-x', '--exitfirst', action="store_true", default=False,
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dest="exitfirst",
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help="exit instantly on first error or failed test."),
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group._addoption('--maxfail', metavar="num",
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action="store", type="int", dest="maxfail", default=0,
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help="exit after first num failures or errors.")
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group = parser.getgroup("collect", "collection")
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group.addoption('--collectonly',
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action="store_true", dest="collectonly",
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help="only collect tests, don't execute them."),
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group.addoption("--ignore", action="append", metavar="path",
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help="ignore path during collection (multi-allowed).")
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group.addoption('--confcutdir', dest="confcutdir", default=None,
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metavar="dir",
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help="only load conftest.py's relative to specified dir.")
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group = parser.getgroup("debugconfig",
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"test process debugging and configuration")
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group.addoption('--basetemp', dest="basetemp", default=None, metavar="dir",
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help="base temporary directory for this test run.")
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def pytest_namespace():
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return dict(collect=dict(Item=Item, Collector=Collector, File=File))
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def pytest_configure(config):
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py.test.config = config # compatibiltiy
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if config.option.exitfirst:
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config.option.maxfail = 1
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def pytest_cmdline_main(config):
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""" default command line protocol for initialization, collection,
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running tests and reporting. """
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session = Session(config)
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session.exitstatus = EXIT_OK
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try:
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config.pluginmanager.do_configure(config)
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config.hook.pytest_sessionstart(session=session)
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config.hook.pytest_collection(session=session)
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config.hook.pytest_runtestloop(session=session)
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except pytest.UsageError:
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raise
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except KeyboardInterrupt:
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excinfo = py.code.ExceptionInfo()
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config.hook.pytest_keyboard_interrupt(excinfo=excinfo)
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session.exitstatus = EXIT_INTERRUPTED
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except:
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excinfo = py.code.ExceptionInfo()
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config.pluginmanager.notify_exception(excinfo)
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session.exitstatus = EXIT_INTERNALERROR
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if excinfo.errisinstance(SystemExit):
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sys.stderr.write("mainloop: caught Spurious SystemExit!\n")
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if not session.exitstatus and session._testsfailed:
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session.exitstatus = EXIT_TESTSFAILED
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config.hook.pytest_sessionfinish(session=session,
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exitstatus=session.exitstatus)
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config.pluginmanager.do_unconfigure(config)
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return session.exitstatus
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def pytest_collection(session):
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collection = session.collection
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assert not hasattr(collection, 'items')
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collection.perform_collect()
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hook = session.config.hook
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items = collection.items
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hook.pytest_collection_modifyitems(config=session.config, items=items)
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hook.pytest_collection_finish(collection=collection)
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return True
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def pytest_runtestloop(session):
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if session.config.option.collectonly:
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return True
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for item in session.collection.items:
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item.config.hook.pytest_runtest_protocol(item=item)
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if session.shouldstop:
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raise session.Interrupted(session.shouldstop)
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return True
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def pytest_ignore_collect(path, config):
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p = path.dirpath()
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ignore_paths = config._getconftest_pathlist("collect_ignore", path=p)
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ignore_paths = ignore_paths or []
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excludeopt = config.getvalue("ignore")
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if excludeopt:
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ignore_paths.extend([py.path.local(x) for x in excludeopt])
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return path in ignore_paths
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class Session(object):
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class Interrupted(KeyboardInterrupt):
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""" signals an interrupted test run. """
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__module__ = 'builtins' # for py3
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def __init__(self, config):
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self.config = config
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self.config.pluginmanager.register(self, name="session", prepend=True)
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self._testsfailed = 0
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self.shouldstop = False
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self.collection = Collection(config) # XXX move elswehre
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def pytest_collectstart(self):
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if self.shouldstop:
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raise self.Interrupted(self.shouldstop)
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def pytest_runtest_logreport(self, report):
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if report.failed and 'xfail' not in getattr(report, 'keywords', []):
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self._testsfailed += 1
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maxfail = self.config.getvalue("maxfail")
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if maxfail and self._testsfailed >= maxfail:
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self.shouldstop = "stopping after %d failures" % (
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self._testsfailed)
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pytest_collectreport = pytest_runtest_logreport
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class NoMatch(Exception):
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""" raised if matching cannot locate a matching names. """
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class HookProxy:
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def __init__(self, fspath, config):
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self.fspath = fspath
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self.config = config
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def __getattr__(self, name):
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hookmethod = getattr(self.config.hook, name)
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def call_matching_hooks(**kwargs):
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plugins = self.config._getmatchingplugins(self.fspath)
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return hookmethod.pcall(plugins, **kwargs)
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return call_matching_hooks
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def compatproperty(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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py.log._apiwarn("2.0", "use py.test.collect.%s for "
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"Collection classes" % name)
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return getattr(pytest.collect, name)
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return property(fget)
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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 parent.collection
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#: filesystem path where this node was collected from
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self.fspath = getattr(parent, 'fspath', None)
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self.ihook = self.collection.gethookproxy(self.fspath)
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self.keywords = {self.name: True}
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Module = compatproperty("Module")
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Class = compatproperty("Class")
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Function = compatproperty("Function")
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File = compatproperty("File")
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Item = compatproperty("Item")
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def __repr__(self):
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return "<%s %r>" %(self.__class__.__name__, getattr(self, 'name', None))
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# methods for ordering nodes
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@property
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def nodeid(self):
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try:
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return self._nodeid
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except AttributeError:
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self._nodeid = x = self._makeid()
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return x
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def _makeid(self):
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return self.parent.nodeid + "::" + self.name
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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 _prunetraceback(self, excinfo):
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pass
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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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self._prunetraceback(excinfo)
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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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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 repr_failure(self, excinfo):
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""" represent a collection 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', lambda: list(self.collect()))
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def _prunetraceback(self, excinfo):
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if hasattr(self, 'fspath'):
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path = self.fspath
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traceback = excinfo.traceback
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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=tracebackcutdir)
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excinfo.traceback = ntraceback.filter()
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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) # xxx only for test_resultlog.py?
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name = parent and fspath.relto(parent.fspath) or fspath.basename
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super(FSCollector, self).__init__(name, parent, config, collection)
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self.fspath = fspath
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def _makeid(self):
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if self == self.collection:
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return "."
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relpath = self.collection.fspath.bestrelpath(self.fspath)
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if os.sep != "/":
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relpath = str(path).replace(os.sep, "/")
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return relpath
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class File(FSCollector):
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""" base class for collecting tests from a file. """
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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.
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"""
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def reportinfo(self):
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return self.fspath, None, ""
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@property
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def location(self):
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try:
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return self._location
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except AttributeError:
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location = self.reportinfo()
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location = (str(location[0]), location[1], str(location[2]))
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self._location = location
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return location
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class Collection(FSCollector):
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def __init__(self, config):
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super(Collection, self).__init__(py.path.local(), parent=None,
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config=config, collection=self)
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self.trace = config.trace.root.get("collection")
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self._norecursepatterns = config.getini("norecursedirs")
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def isinitpath(self, path):
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return path in self._initialpaths
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def gethookproxy(self, fspath):
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return HookProxy(fspath, self.config)
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def perform_collect(self, args=None, genitems=True):
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if args is None:
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args = self.config.args
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self.trace("perform_collect", self, args)
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self.trace.root.indent += 1
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self._notfound = []
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self._initialpaths = set()
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self._initialargs = args
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for arg in args:
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parts = self._parsearg(arg)
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self._initialpaths.add(parts[0])
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self.ihook.pytest_collectstart(collector=self)
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rep = self.ihook.pytest_make_collect_report(collector=self)
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self.ihook.pytest_collectreport(report=rep)
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self.trace.root.indent -= 1
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if self._notfound:
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for arg, exc in self._notfound:
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line = "no name %r in any of %r" % (exc.args[1], exc.args[0])
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raise pytest.UsageError("not found: %s\n%s" %(arg, line))
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if not genitems:
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return rep.result
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else:
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self.items = items = []
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if rep.passed:
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for node in rep.result:
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self.items.extend(self.genitems(node))
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return items
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def collect(self):
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for arg in self._initialargs:
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self.trace("processing arg", arg)
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self.trace.root.indent += 1
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try:
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for x in self._collect(arg):
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yield x
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except NoMatch:
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# we are inside a make_report hook so
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# we cannot directly pass through the exception
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self._notfound.append((arg, sys.exc_info()[1]))
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self.trace.root.indent -= 1
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break
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self.trace.root.indent -= 1
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def _collect(self, arg):
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names = self._parsearg(arg)
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path = names.pop(0)
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if path.check(dir=1):
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assert not names, "invalid arg %r" %(arg,)
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for path in path.visit(rec=self._recurse, bf=True, sort=True):
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for x in self._collectfile(path):
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yield x
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else:
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assert path.check(file=1)
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for x in self.matchnodes(self._collectfile(path), names):
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yield x
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def _collectfile(self, path):
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ihook = self.gethookproxy(path)
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if ihook.pytest_ignore_collect(path=path, config=self.config):
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return ()
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return ihook.pytest_collect_file(path=path, parent=self)
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def _recurse(self, path):
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ihook = self.gethookproxy(path)
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if ihook.pytest_ignore_collect(path=path, config=self.config):
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return
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for pat in self._norecursepatterns:
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if path.check(fnmatch=pat):
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return False
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ihook.pytest_collect_directory(path=path, parent=self)
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return True
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def _parsearg(self, arg):
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""" return (fspath, names) tuple after checking the file exists. """
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parts = str(arg).split("::")
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path = self.fspath.join(parts[0], abs=True)
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if not path.check():
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raise pytest.UsageError("file not found: %s" %(path,))
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parts[0] = path
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return parts
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def matchnodes(self, matching, names):
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self.trace("matchnodes", matching, names)
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self.trace.root.indent += 1
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nodes = self._matchnodes(matching, names)
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num = len(nodes)
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self.trace("matchnodes finished -> ", num, "nodes")
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self.trace.root.indent -= 1
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if num == 0:
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raise NoMatch(matching, names[:1])
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return nodes
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def _matchnodes(self, matching, names):
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if not matching or not names:
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return matching
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name = names[0]
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assert name
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nextnames = names[1:]
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resultnodes = []
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for node in matching:
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if isinstance(node, pytest.collect.Item):
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resultnodes.append(node)
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continue
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assert isinstance(node, pytest.collect.Collector)
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node.ihook.pytest_collectstart(collector=node)
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rep = node.ihook.pytest_make_collect_report(collector=node)
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if rep.passed:
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for x in rep.result:
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if x.name == name:
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resultnodes.extend(self.matchnodes([x], nextnames))
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node.ihook.pytest_collectreport(report=rep)
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return resultnodes
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def genitems(self, node):
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self.trace("genitems", node)
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if isinstance(node, pytest.collect.Item):
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node.ihook.pytest_itemcollected(item=node)
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yield node
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else:
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assert isinstance(node, pytest.collect.Collector)
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node.ihook.pytest_collectstart(collector=node)
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rep = node.ihook.pytest_make_collect_report(collector=node)
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if rep.passed:
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for subnode in rep.result:
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for x in self.genitems(subnode):
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yield x
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node.ihook.pytest_collectreport(report=rep)
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