572 lines
19 KiB
Python
572 lines
19 KiB
Python
""" basic collect and runtest protocol implementations """
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import bdb
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import sys
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from time import time
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import py
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import pytest
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from _pytest._code.code import TerminalRepr, ExceptionInfo
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def pytest_namespace():
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return {
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'fail' : fail,
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'skip' : skip,
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'importorskip' : importorskip,
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'exit' : exit,
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}
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#
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# pytest plugin hooks
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def pytest_addoption(parser):
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group = parser.getgroup("terminal reporting", "reporting", after="general")
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group.addoption('--durations',
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action="store", type=int, default=None, metavar="N",
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help="show N slowest setup/test durations (N=0 for all)."),
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def pytest_terminal_summary(terminalreporter):
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durations = terminalreporter.config.option.durations
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if durations is None:
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return
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tr = terminalreporter
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dlist = []
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for replist in tr.stats.values():
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for rep in replist:
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if hasattr(rep, 'duration'):
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dlist.append(rep)
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if not dlist:
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return
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dlist.sort(key=lambda x: x.duration)
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dlist.reverse()
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if not durations:
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tr.write_sep("=", "slowest test durations")
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else:
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tr.write_sep("=", "slowest %s test durations" % durations)
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dlist = dlist[:durations]
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for rep in dlist:
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nodeid = rep.nodeid.replace("::()::", "::")
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tr.write_line("%02.2fs %-8s %s" %
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(rep.duration, rep.when, nodeid))
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def pytest_sessionstart(session):
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session._setupstate = SetupState()
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def pytest_sessionfinish(session):
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session._setupstate.teardown_all()
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class NodeInfo:
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def __init__(self, location):
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self.location = location
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def pytest_runtest_protocol(item, nextitem):
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item.ihook.pytest_runtest_logstart(
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nodeid=item.nodeid, location=item.location,
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)
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runtestprotocol(item, nextitem=nextitem)
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return True
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def runtestprotocol(item, log=True, nextitem=None):
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hasrequest = hasattr(item, "_request")
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if hasrequest and not item._request:
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item._initrequest()
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rep = call_and_report(item, "setup", log)
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reports = [rep]
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if rep.passed:
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if item.config.option.setupshow:
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show_test_item(item)
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if not item.config.option.setuponly:
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reports.append(call_and_report(item, "call", log))
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reports.append(call_and_report(item, "teardown", log,
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nextitem=nextitem))
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# after all teardown hooks have been called
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# want funcargs and request info to go away
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if hasrequest:
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item._request = False
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item.funcargs = None
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return reports
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def show_test_item(item):
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"""Show test function, parameters and the fixtures of the test item."""
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tw = item.config.get_terminal_writer()
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tw.line()
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tw.write(' ' * 8)
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tw.write(item._nodeid)
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used_fixtures = sorted(item._fixtureinfo.name2fixturedefs.keys())
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if used_fixtures:
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tw.write(' (fixtures used: {0})'.format(', '.join(used_fixtures)))
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def pytest_runtest_setup(item):
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item.session._setupstate.prepare(item)
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def pytest_runtest_call(item):
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try:
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item.runtest()
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except Exception:
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# Store trace info to allow postmortem debugging
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type, value, tb = sys.exc_info()
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tb = tb.tb_next # Skip *this* frame
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sys.last_type = type
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sys.last_value = value
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sys.last_traceback = tb
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del tb # Get rid of it in this namespace
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raise
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def pytest_runtest_teardown(item, nextitem):
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item.session._setupstate.teardown_exact(item, nextitem)
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def pytest_report_teststatus(report):
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if report.when in ("setup", "teardown"):
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if report.failed:
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# category, shortletter, verbose-word
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return "error", "E", "ERROR"
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elif report.skipped:
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return "skipped", "s", "SKIPPED"
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else:
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return "", "", ""
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#
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# Implementation
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def call_and_report(item, when, log=True, **kwds):
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call = call_runtest_hook(item, when, **kwds)
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hook = item.ihook
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report = hook.pytest_runtest_makereport(item=item, call=call)
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if log:
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hook.pytest_runtest_logreport(report=report)
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if check_interactive_exception(call, report):
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hook.pytest_exception_interact(node=item, call=call, report=report)
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return report
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def check_interactive_exception(call, report):
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return call.excinfo and not (
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hasattr(report, "wasxfail") or
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call.excinfo.errisinstance(skip.Exception) or
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call.excinfo.errisinstance(bdb.BdbQuit))
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def call_runtest_hook(item, when, **kwds):
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hookname = "pytest_runtest_" + when
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ihook = getattr(item.ihook, hookname)
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return CallInfo(lambda: ihook(item=item, **kwds), when=when)
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class CallInfo:
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""" Result/Exception info a function invocation. """
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#: None or ExceptionInfo object.
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excinfo = None
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def __init__(self, func, when):
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#: context of invocation: one of "setup", "call",
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#: "teardown", "memocollect"
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self.when = when
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self.start = time()
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try:
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self.result = func()
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except KeyboardInterrupt:
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self.stop = time()
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raise
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except:
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self.excinfo = ExceptionInfo()
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self.stop = time()
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def __repr__(self):
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if self.excinfo:
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status = "exception: %s" % str(self.excinfo.value)
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else:
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status = "result: %r" % (self.result,)
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return "<CallInfo when=%r %s>" % (self.when, status)
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def getslaveinfoline(node):
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try:
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return node._slaveinfocache
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except AttributeError:
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d = node.slaveinfo
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ver = "%s.%s.%s" % d['version_info'][:3]
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node._slaveinfocache = s = "[%s] %s -- Python %s %s" % (
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d['id'], d['sysplatform'], ver, d['executable'])
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return s
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class BaseReport(object):
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def __init__(self, **kw):
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self.__dict__.update(kw)
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def toterminal(self, out):
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if hasattr(self, 'node'):
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out.line(getslaveinfoline(self.node))
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longrepr = self.longrepr
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if longrepr is None:
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return
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if hasattr(longrepr, 'toterminal'):
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longrepr.toterminal(out)
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else:
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try:
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out.line(longrepr)
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except UnicodeEncodeError:
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out.line("<unprintable longrepr>")
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def get_sections(self, prefix):
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for name, content in self.sections:
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if name.startswith(prefix):
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yield prefix, content
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@property
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def longreprtext(self):
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"""
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Read-only property that returns the full string representation
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of ``longrepr``.
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.. versionadded:: 3.0
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"""
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tw = py.io.TerminalWriter(stringio=True)
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tw.hasmarkup = False
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self.toterminal(tw)
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exc = tw.stringio.getvalue()
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return exc.strip()
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@property
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def capstdout(self):
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"""Return captured text from stdout, if capturing is enabled
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.. versionadded:: 3.0
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"""
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return ''.join(content for (prefix, content) in self.get_sections('Captured stdout'))
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@property
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def capstderr(self):
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"""Return captured text from stderr, if capturing is enabled
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.. versionadded:: 3.0
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"""
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return ''.join(content for (prefix, content) in self.get_sections('Captured stderr'))
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passed = property(lambda x: x.outcome == "passed")
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failed = property(lambda x: x.outcome == "failed")
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skipped = property(lambda x: x.outcome == "skipped")
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@property
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def fspath(self):
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return self.nodeid.split("::")[0]
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def pytest_runtest_makereport(item, call):
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when = call.when
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duration = call.stop-call.start
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keywords = dict([(x,1) for x in item.keywords])
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excinfo = call.excinfo
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sections = []
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if not call.excinfo:
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outcome = "passed"
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longrepr = None
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else:
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if not isinstance(excinfo, ExceptionInfo):
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outcome = "failed"
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longrepr = excinfo
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elif excinfo.errisinstance(pytest.skip.Exception):
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outcome = "skipped"
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r = excinfo._getreprcrash()
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longrepr = (str(r.path), r.lineno, r.message)
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else:
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outcome = "failed"
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if call.when == "call":
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longrepr = item.repr_failure(excinfo)
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else: # exception in setup or teardown
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longrepr = item._repr_failure_py(excinfo,
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style=item.config.option.tbstyle)
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for rwhen, key, content in item._report_sections:
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sections.append(("Captured %s %s" %(key, rwhen), content))
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return TestReport(item.nodeid, item.location,
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keywords, outcome, longrepr, when,
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sections, duration)
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class TestReport(BaseReport):
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""" Basic test report object (also used for setup and teardown calls if
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they fail).
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"""
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def __init__(self, nodeid, location, keywords, outcome,
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longrepr, when, sections=(), duration=0, **extra):
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#: normalized collection node id
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self.nodeid = nodeid
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#: a (filesystempath, lineno, domaininfo) tuple indicating the
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#: actual location of a test item - it might be different from the
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#: collected one e.g. if a method is inherited from a different module.
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self.location = location
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#: a name -> value dictionary containing all keywords and
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#: markers associated with a test invocation.
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self.keywords = keywords
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#: test outcome, always one of "passed", "failed", "skipped".
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self.outcome = outcome
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#: None or a failure representation.
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self.longrepr = longrepr
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#: one of 'setup', 'call', 'teardown' to indicate runtest phase.
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self.when = when
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#: list of pairs ``(str, str)`` of extra information which needs to
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#: marshallable. Used by pytest to add captured text
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#: from ``stdout`` and ``stderr``, but may be used by other plugins
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#: to add arbitrary information to reports.
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self.sections = list(sections)
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#: time it took to run just the test
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self.duration = duration
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self.__dict__.update(extra)
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def __repr__(self):
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return "<TestReport %r when=%r outcome=%r>" % (
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self.nodeid, self.when, self.outcome)
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class TeardownErrorReport(BaseReport):
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outcome = "failed"
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when = "teardown"
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def __init__(self, longrepr, **extra):
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self.longrepr = longrepr
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self.sections = []
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self.__dict__.update(extra)
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def pytest_make_collect_report(collector):
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call = CallInfo(collector._memocollect, "memocollect")
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longrepr = None
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if not call.excinfo:
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outcome = "passed"
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else:
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from _pytest import nose
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skip_exceptions = (Skipped,) + nose.get_skip_exceptions()
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if call.excinfo.errisinstance(skip_exceptions):
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outcome = "skipped"
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r = collector._repr_failure_py(call.excinfo, "line").reprcrash
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longrepr = (str(r.path), r.lineno, r.message)
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else:
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outcome = "failed"
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errorinfo = collector.repr_failure(call.excinfo)
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if not hasattr(errorinfo, "toterminal"):
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errorinfo = CollectErrorRepr(errorinfo)
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longrepr = errorinfo
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rep = CollectReport(collector.nodeid, outcome, longrepr,
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getattr(call, 'result', None))
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rep.call = call # see collect_one_node
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return rep
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class CollectReport(BaseReport):
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def __init__(self, nodeid, outcome, longrepr, result,
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sections=(), **extra):
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self.nodeid = nodeid
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self.outcome = outcome
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self.longrepr = longrepr
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self.result = result or []
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self.sections = list(sections)
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self.__dict__.update(extra)
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@property
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def location(self):
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return (self.fspath, None, self.fspath)
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def __repr__(self):
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return "<CollectReport %r lenresult=%s outcome=%r>" % (
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self.nodeid, len(self.result), self.outcome)
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class CollectErrorRepr(TerminalRepr):
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def __init__(self, msg):
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self.longrepr = msg
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def toterminal(self, out):
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out.line(self.longrepr, red=True)
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class SetupState(object):
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""" shared state for setting up/tearing down test items or collectors. """
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def __init__(self):
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self.stack = []
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self._finalizers = {}
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def addfinalizer(self, finalizer, colitem):
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""" attach a finalizer to the given colitem.
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if colitem is None, this will add a finalizer that
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is called at the end of teardown_all().
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"""
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assert colitem and not isinstance(colitem, tuple)
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assert py.builtin.callable(finalizer)
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#assert colitem in self.stack # some unit tests don't setup stack :/
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self._finalizers.setdefault(colitem, []).append(finalizer)
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def _pop_and_teardown(self):
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colitem = self.stack.pop()
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self._teardown_with_finalization(colitem)
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def _callfinalizers(self, colitem):
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finalizers = self._finalizers.pop(colitem, None)
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exc = None
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while finalizers:
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fin = finalizers.pop()
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try:
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fin()
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except Exception:
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# XXX Only first exception will be seen by user,
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# ideally all should be reported.
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if exc is None:
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exc = sys.exc_info()
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if exc:
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py.builtin._reraise(*exc)
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def _teardown_with_finalization(self, colitem):
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self._callfinalizers(colitem)
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if hasattr(colitem, "teardown"):
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colitem.teardown()
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for colitem in self._finalizers:
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assert colitem is None or colitem in self.stack \
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or isinstance(colitem, tuple)
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def teardown_all(self):
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while self.stack:
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self._pop_and_teardown()
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for key in list(self._finalizers):
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self._teardown_with_finalization(key)
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assert not self._finalizers
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def teardown_exact(self, item, nextitem):
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needed_collectors = nextitem and nextitem.listchain() or []
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self._teardown_towards(needed_collectors)
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def _teardown_towards(self, needed_collectors):
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while self.stack:
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if self.stack == needed_collectors[:len(self.stack)]:
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break
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self._pop_and_teardown()
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def prepare(self, colitem):
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""" setup objects along the collector chain to the test-method
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and teardown previously setup objects."""
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needed_collectors = colitem.listchain()
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self._teardown_towards(needed_collectors)
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# check if the last collection node has raised an error
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for col in self.stack:
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if hasattr(col, '_prepare_exc'):
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py.builtin._reraise(*col._prepare_exc)
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for col in needed_collectors[len(self.stack):]:
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self.stack.append(col)
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try:
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col.setup()
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except Exception:
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col._prepare_exc = sys.exc_info()
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raise
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def collect_one_node(collector):
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ihook = collector.ihook
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ihook.pytest_collectstart(collector=collector)
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rep = ihook.pytest_make_collect_report(collector=collector)
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call = rep.__dict__.pop("call", None)
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if call and check_interactive_exception(call, rep):
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ihook.pytest_exception_interact(node=collector, call=call, report=rep)
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return rep
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# =============================================================
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# Test OutcomeExceptions and helpers for creating them.
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class OutcomeException(Exception):
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""" OutcomeException and its subclass instances indicate and
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contain info about test and collection outcomes.
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"""
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def __init__(self, msg=None, pytrace=True):
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Exception.__init__(self, msg)
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self.msg = msg
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self.pytrace = pytrace
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def __repr__(self):
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if self.msg:
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val = self.msg
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if isinstance(val, bytes):
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val = py._builtin._totext(val, errors='replace')
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return val
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return "<%s instance>" %(self.__class__.__name__,)
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__str__ = __repr__
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class Skipped(OutcomeException):
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# XXX hackish: on 3k we fake to live in the builtins
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# in order to have Skipped exception printing shorter/nicer
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__module__ = 'builtins'
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def __init__(self, msg=None, pytrace=True, allow_module_level=False):
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OutcomeException.__init__(self, msg=msg, pytrace=pytrace)
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self.allow_module_level = allow_module_level
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class Failed(OutcomeException):
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""" raised from an explicit call to pytest.fail() """
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__module__ = 'builtins'
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class Exit(KeyboardInterrupt):
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""" raised for immediate program exits (no tracebacks/summaries)"""
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def __init__(self, msg="unknown reason"):
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self.msg = msg
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KeyboardInterrupt.__init__(self, msg)
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# exposed helper methods
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def exit(msg):
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""" exit testing process as if KeyboardInterrupt was triggered. """
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__tracebackhide__ = True
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raise Exit(msg)
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exit.Exception = Exit
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def skip(msg=""):
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""" skip an executing test with the given message. Note: it's usually
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better to use the pytest.mark.skipif marker to declare a test to be
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|
skipped under certain conditions like mismatching platforms or
|
|
dependencies. See the pytest_skipping plugin for details.
|
|
"""
|
|
__tracebackhide__ = True
|
|
raise Skipped(msg=msg)
|
|
skip.Exception = Skipped
|
|
|
|
def fail(msg="", pytrace=True):
|
|
""" explicitly fail an currently-executing test with the given Message.
|
|
|
|
:arg pytrace: if false the msg represents the full failure information
|
|
and no python traceback will be reported.
|
|
"""
|
|
__tracebackhide__ = True
|
|
raise Failed(msg=msg, pytrace=pytrace)
|
|
fail.Exception = Failed
|
|
|
|
|
|
def importorskip(modname, minversion=None):
|
|
""" return imported module if it has at least "minversion" as its
|
|
__version__ attribute. If no minversion is specified the a skip
|
|
is only triggered if the module can not be imported.
|
|
"""
|
|
__tracebackhide__ = True
|
|
compile(modname, '', 'eval') # to catch syntaxerrors
|
|
should_skip = False
|
|
try:
|
|
__import__(modname)
|
|
except ImportError:
|
|
# Do not raise chained exception here(#1485)
|
|
should_skip = True
|
|
if should_skip:
|
|
raise Skipped("could not import %r" %(modname,), allow_module_level=True)
|
|
mod = sys.modules[modname]
|
|
if minversion is None:
|
|
return mod
|
|
verattr = getattr(mod, '__version__', None)
|
|
if minversion is not None:
|
|
try:
|
|
from pkg_resources import parse_version as pv
|
|
except ImportError:
|
|
raise Skipped("we have a required version for %r but can not import "
|
|
"pkg_resources to parse version strings." % (modname,),
|
|
allow_module_level=True)
|
|
if verattr is None or pv(verattr) < pv(minversion):
|
|
raise Skipped("module %r has __version__ %r, required is: %r" %(
|
|
modname, verattr, minversion), allow_module_level=True)
|
|
return mod
|
|
|