447 lines
14 KiB
Python
447 lines
14 KiB
Python
"""
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pytes plugin for easing testing of pytest runs themselves.
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"""
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import py
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from py.__.test import event
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from py.__.test.config import Config as pytestConfig
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class PytesterPlugin:
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def pytest_pyfuncarg_linecomp(self, pyfuncitem):
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return LineComp()
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def pytest_pyfuncarg_LineMatcher(self, pyfuncitem):
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return LineMatcher
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def pytest_pyfuncarg_testdir(self, pyfuncitem):
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tmptestdir = TmpTestdir(pyfuncitem)
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pyfuncitem.addfinalizer(tmptestdir.finalize)
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return tmptestdir
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def pytest_pyfuncarg_EventRecorder(self, pyfuncitem):
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return EventRecorder
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def pytest_pyfuncarg_eventrecorder(self, pyfuncitem):
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evrec = EventRecorder(py._com.pyplugins)
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pyfuncitem.addfinalizer(lambda: evrec.pyplugins.unregister(evrec))
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return evrec
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def test_generic(plugintester):
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plugintester.apicheck(PytesterPlugin)
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class RunResult:
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def __init__(self, ret, outlines, errlines):
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self.ret = ret
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self.outlines = outlines
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self.errlines = errlines
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self.stdout = LineMatcher(outlines)
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self.stderr = LineMatcher(errlines)
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class TmpTestdir:
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def __init__(self, pyfuncitem):
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self.pyfuncitem = pyfuncitem
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# XXX remove duplication with tmpdir plugin
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basetmp = pyfuncitem.config.ensuretemp("testdir")
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name = pyfuncitem.name
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for i in range(100):
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try:
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tmpdir = basetmp.mkdir(name + str(i))
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except py.error.EEXIST:
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continue
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break
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# we need to create another subdir
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# because Directory.collect() currently loads
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# conftest.py from sibling directories
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self.tmpdir = tmpdir.mkdir(name)
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self.plugins = []
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self._syspathremove = []
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def Config(self, pyplugins=None, topdir=None):
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if topdir is None:
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topdir = self.tmpdir.dirpath()
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return pytestConfig(pyplugins, topdir=topdir)
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def finalize(self):
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for p in self._syspathremove:
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py.std.sys.path.remove(p)
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if hasattr(self, '_olddir'):
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self._olddir.chdir()
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def chdir(self):
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old = self.testdir.chdir()
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if not hasattr(self, '_olddir'):
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self._olddir = old
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def _makefile(self, ext, args, kwargs):
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items = kwargs.items()
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if args:
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source = "\n".join(map(str, args))
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basename = self.pyfuncitem.name
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items.insert(0, (basename, source))
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ret = None
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for name, value in items:
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p = self.tmpdir.join(name).new(ext=ext)
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source = py.code.Source(value)
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p.write(str(py.code.Source(value)).lstrip())
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if ret is None:
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ret = p
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return ret
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def makefile(self, ext, *args, **kwargs):
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return self._makefile(ext, args, kwargs)
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def makeconftest(self, source):
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return self.makepyfile(conftest=source)
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def makepyfile(self, *args, **kwargs):
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return self._makefile('.py', args, kwargs)
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def maketxtfile(self, *args, **kwargs):
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return self._makefile('.txt', args, kwargs)
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def syspathinsert(self, path=None):
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if path is None:
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path = self.tmpdir
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py.std.sys.path.insert(0, str(path))
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self._syspathremove.append(str(path))
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def mkdir(self, name):
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return self.tmpdir.mkdir(name)
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def chdir(self):
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return self.tmpdir.chdir()
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def genitems(self, colitems):
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return list(self.session.genitems(colitems))
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def inline_genitems(self, *args):
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#config = self.parseconfig(*args)
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config = self.parseconfig(*args)
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session = config.initsession()
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rec = EventRecorder(config.bus)
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colitems = [config.getfsnode(arg) for arg in config.args]
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items = list(session.genitems(colitems))
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return items, rec
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def runitem(self, source, **runnerargs):
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# used from runner functional tests
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item = self.getitem(source)
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# the test class where we are called from wants to provide the runner
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testclassinstance = self.pyfuncitem.obj.im_self
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runner = testclassinstance.getrunner()
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return runner(item, **runnerargs)
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def inline_runsource(self, source, *cmdlineargs):
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p = self.makepyfile(source)
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l = list(cmdlineargs) + [p]
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return self.inline_run(*l)
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def inline_run(self, *args):
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config = self.parseconfig(*args)
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config.pytestplugins.do_configure(config)
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session = config.initsession()
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sorter = EventRecorder(config.bus)
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session.main()
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config.pytestplugins.do_unconfigure(config)
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return sorter
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def config_preparse(self):
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config = self.Config()
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for plugin in self.plugins:
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if isinstance(plugin, str):
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config.pytestplugins.import_plugin(plugin)
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else:
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config.pytestplugins.register(plugin)
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return config
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def parseconfig(self, *args):
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if not args:
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args = (self.tmpdir,)
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config = self.config_preparse()
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args = list(args) + ["--basetemp=%s" % self.tmpdir.dirpath('basetemp')]
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config.parse(args)
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return config
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def getitem(self, source, funcname="test_func"):
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modcol = self.getmodulecol(source)
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item = modcol.join(funcname)
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assert item is not None, "%r item not found in module:\n%s" %(funcname, source)
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return item
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def getitems(self, source):
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modcol = self.getmodulecol(source)
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return list(modcol.config.initsession().genitems([modcol]))
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#assert item is not None, "%r item not found in module:\n%s" %(funcname, source)
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#return item
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def getfscol(self, path, configargs=()):
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self.config = self.parseconfig(path, *configargs)
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self.session = self.config.initsession()
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return self.config.getfsnode(path)
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def getmodulecol(self, source, configargs=(), withinit=False):
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kw = {self.pyfuncitem.name: py.code.Source(source).strip()}
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path = self.makepyfile(**kw)
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if withinit:
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self.makepyfile(__init__ = "#")
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self.config = self.parseconfig(path, *configargs)
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self.session = self.config.initsession()
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return self.config.getfsnode(path)
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def prepare(self):
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p = self.tmpdir.join("conftest.py")
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if not p.check():
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plugins = [x for x in self.plugins if isinstance(x, str)]
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if not plugins:
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return
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p.write("import py ; pytest_plugins = %r" % plugins)
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else:
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if self.plugins:
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print "warning, ignoring reusing existing con", p
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def popen(self, cmdargs, stdout, stderr, **kw):
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if not hasattr(py.std, 'subprocess'):
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py.test.skip("no subprocess module")
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return py.std.subprocess.Popen(cmdargs, stdout=stdout, stderr=stderr, **kw)
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def run(self, *cmdargs):
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self.prepare()
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old = self.tmpdir.chdir()
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#print "chdir", self.tmpdir
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try:
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return self._run(*cmdargs)
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finally:
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old.chdir()
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def _run(self, *cmdargs):
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cmdargs = map(str, cmdargs)
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p1 = py.path.local("stdout")
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p2 = py.path.local("stderr")
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print "running", cmdargs, "curdir=", py.path.local()
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popen = self.popen(cmdargs, stdout=p1.open("w"), stderr=p2.open("w"))
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ret = popen.wait()
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out, err = p1.readlines(cr=0), p2.readlines(cr=0)
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if err:
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for line in err:
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print >>py.std.sys.stderr, line
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if out:
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for line in out:
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print >>py.std.sys.stdout, line
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return RunResult(ret, out, err)
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def runpybin(self, scriptname, *args):
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bindir = py.path.local(py.__file__).dirpath("bin")
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script = bindir.join(scriptname)
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assert script.check()
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return self.run(py.std.sys.executable, script, *args)
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def runpytest(self, *args):
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p = py.path.local.make_numbered_dir(prefix="runpytest-",
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keep=None, rootdir=self.tmpdir)
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args = ('--basetemp=%s' % p, ) + args
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return self.runpybin("py.test", *args)
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class Event:
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def __init__(self, name, args, kwargs):
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self.name = name
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self.args = args
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self.kwargs = kwargs
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def __repr__(self):
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return "<Event %r %r>" %(self.name, self.args)
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class EventRecorder(object):
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def __init__(self, pyplugins, debug=False): # True):
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self.events = []
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self.pyplugins = pyplugins
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self.debug = debug
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pyplugins.register(self)
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def pyevent(self, name, *args, **kwargs):
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if name == "plugin_registered" and args == (self,):
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return
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if self.debug:
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print "[event: %s]: %s **%s" %(name, ", ".join(map(str, args)), kwargs,)
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self.events.append(Event(name, args, kwargs))
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def popevent(self, name):
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for i, event in py.builtin.enumerate(self.events):
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if event.name == name:
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del self.events[i]
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return event
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raise KeyError("popevent: %r not found in %r" %(name, self.events))
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def get(self, cls):
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l = []
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for event in self.events:
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value = event.args[0]
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if isinstance(value, cls):
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l.append(value)
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return l
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def getnamed(self, *names):
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l = []
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for event in self.events:
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if event.name in names:
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l.append(event.args[0])
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return l
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def getfirstnamed(self, name):
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for event in self.events:
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if event.name == name:
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return event.args[0]
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def getfailures(self, names='itemtestreport collectionreport'):
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l = []
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for ev in self.getnamed(*names.split()):
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if ev.failed:
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l.append(ev)
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return l
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def getfailedcollections(self):
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return self.getfailures('collectionreport')
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def listoutcomes(self):
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passed = []
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skipped = []
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failed = []
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for ev in self.getnamed('itemtestreport'): # , 'collectionreport'):
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if ev.passed:
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passed.append(ev)
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elif ev.skipped:
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skipped.append(ev)
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elif ev.failed:
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failed.append(ev)
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return passed, skipped, failed
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def countoutcomes(self):
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return map(len, self.listoutcomes())
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def assertoutcome(self, passed=0, skipped=0, failed=0):
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realpassed, realskipped, realfailed = self.listoutcomes()
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assert passed == len(realpassed)
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assert skipped == len(realskipped)
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assert failed == len(realfailed)
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def getreport(self, inamepart):
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""" return a testreport whose dotted import path matches """
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__tracebackhide__ = True
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l = []
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for rep in self.get(event.ItemTestReport):
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if inamepart in rep.colitem.listnames():
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l.append(rep)
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if not l:
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raise ValueError("could not find test report matching %r: no test reports at all!" %
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(inamepart,))
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if len(l) > 1:
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raise ValueError("found more than one testreport matching %r: %s" %(
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inamepart, l))
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return l[0]
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def clear(self):
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self.events[:] = []
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def unregister(self):
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self.pyplugins.unregister(self)
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def test_eventrecorder():
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bus = py._com.PyPlugins()
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recorder = EventRecorder(bus)
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bus.notify("anonymous", event.NOP())
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assert recorder.events
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assert not recorder.getfailures()
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rep = event.ItemTestReport(None, None)
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rep.passed = False
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rep.failed = True
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bus.notify("itemtestreport", rep)
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failures = recorder.getfailures()
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assert failures == [rep]
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failures = recorder.get(event.ItemTestReport)
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assert failures == [rep]
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failures = recorder.getnamed("itemtestreport")
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assert failures == [rep]
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rep = event.ItemTestReport(None, None)
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rep.passed = False
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rep.skipped = True
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bus.notify("itemtestreport", rep)
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rep = event.CollectionReport(None, None)
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rep.passed = False
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rep.failed = True
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bus.notify("itemtestreport", rep)
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passed, skipped, failed = recorder.listoutcomes()
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assert not passed and skipped and failed
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numpassed, numskipped, numfailed = recorder.countoutcomes()
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assert numpassed == 0
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assert numskipped == 1
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assert numfailed == 2
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recorder.unregister()
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recorder.clear()
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assert not recorder.events
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assert not recorder.getfailures()
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bus.notify("itemtestreport", rep)
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assert not recorder.events
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assert not recorder.getfailures()
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class LineComp:
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def __init__(self):
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self.stringio = py.std.StringIO.StringIO()
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def assert_contains_lines(self, lines2):
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""" assert that lines2 are contained (linearly) in lines1.
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return a list of extralines found.
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"""
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__tracebackhide__ = True
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val = self.stringio.getvalue()
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self.stringio.truncate(0) # remove what we got
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lines1 = val.split("\n")
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return LineMatcher(lines1).fnmatch_lines(lines2)
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class LineMatcher:
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def __init__(self, lines):
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self.lines = lines
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def str(self):
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return "\n".join(self.lines)
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def fnmatch_lines(self, lines2):
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if isinstance(lines2, str):
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lines2 = py.code.Source(lines2)
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if isinstance(lines2, py.code.Source):
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lines2 = lines2.strip().lines
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from fnmatch import fnmatch
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__tracebackhide__ = True
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lines1 = self.lines[:]
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nextline = None
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extralines = []
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for line in lines2:
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nomatchprinted = False
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while lines1:
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nextline = lines1.pop(0)
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if line == nextline:
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print "exact match:", repr(line)
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break
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elif fnmatch(nextline, line):
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print "fnmatch:", repr(line)
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print " with:", repr(nextline)
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break
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else:
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if not nomatchprinted:
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print "nomatch:", repr(line)
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nomatchprinted = True
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print " and:", repr(nextline)
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extralines.append(nextline)
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else:
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if line != nextline:
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#__tracebackhide__ = True
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raise AssertionError("expected line not found: %r" % line)
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extralines.extend(lines1)
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return extralines
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