diff --git a/venv/Lib/site-packages/greenlet/tests/test_tracing.py b/venv/Lib/site-packages/greenlet/tests/test_tracing.py new file mode 100644 index 0000000..ebb50cf --- /dev/null +++ b/venv/Lib/site-packages/greenlet/tests/test_tracing.py @@ -0,0 +1,298 @@ +import sys +import sysconfig +import greenlet +import unittest + +from . import TestCase +from . import PY312 + +# https://discuss.python.org/t/cpython-3-12-greenlet-and-tracing-profiling-how-to-not-crash-and-get-correct-results/33144/2 +# When build variables are available, OPT is the best way of detecting +# the build with assertions enabled. Otherwise, fallback to detecting PyDEBUG +# build. +ASSERTION_BUILD_PY312 = ( + PY312 and ( + "-DNDEBUG" not in sysconfig.get_config_var("OPT").split() + if sysconfig.get_config_var("OPT") is not None + else hasattr(sys, 'gettotalrefcount') + ), + "Broken on assertion-enabled builds of Python 3.12" +) + +class SomeError(Exception): + pass + +class GreenletTracer(object): + oldtrace = None + + def __init__(self, error_on_trace=False): + self.actions = [] + self.error_on_trace = error_on_trace + + def __call__(self, *args): + self.actions.append(args) + if self.error_on_trace: + raise SomeError + + def __enter__(self): + self.oldtrace = greenlet.settrace(self) + return self.actions + + def __exit__(self, *args): + greenlet.settrace(self.oldtrace) + + +class TestGreenletTracing(TestCase): + """ + Tests of ``greenlet.settrace()`` + """ + + def test_a_greenlet_tracing(self): + main = greenlet.getcurrent() + def dummy(): + pass + def dummyexc(): + raise SomeError() + + with GreenletTracer() as actions: + g1 = greenlet.greenlet(dummy) + g1.switch() + g2 = greenlet.greenlet(dummyexc) + self.assertRaises(SomeError, g2.switch) + + self.assertEqual(actions, [ + ('switch', (main, g1)), + ('switch', (g1, main)), + ('switch', (main, g2)), + ('throw', (g2, main)), + ]) + + def test_b_exception_disables_tracing(self): + main = greenlet.getcurrent() + def dummy(): + main.switch() + g = greenlet.greenlet(dummy) + g.switch() + with GreenletTracer(error_on_trace=True) as actions: + self.assertRaises(SomeError, g.switch) + self.assertEqual(greenlet.gettrace(), None) + + self.assertEqual(actions, [ + ('switch', (main, g)), + ]) + + def test_set_same_tracer_twice(self): + # https://github.com/python-greenlet/greenlet/issues/332 + # Our logic in asserting that the tracefunction should + # gain a reference was incorrect if the same tracefunction was set + # twice. + tracer = GreenletTracer() + with tracer: + greenlet.settrace(tracer) + + +class PythonTracer(object): + oldtrace = None + + def __init__(self): + self.actions = [] + + def __call__(self, frame, event, arg): + # Record the co_name so we have an idea what function we're in. + self.actions.append((event, frame.f_code.co_name)) + + def __enter__(self): + self.oldtrace = sys.setprofile(self) + return self.actions + + def __exit__(self, *args): + sys.setprofile(self.oldtrace) + +def tpt_callback(): + return 42 + +class TestPythonTracing(TestCase): + """ + Tests of the interaction of ``sys.settrace()`` + with greenlet facilities. + + NOTE: Most of this is probably CPython specific. + """ + + maxDiff = None + + def test_trace_events_trivial(self): + with PythonTracer() as actions: + tpt_callback() + # If we use the sys.settrace instead of setprofile, we get + # this: + + # self.assertEqual(actions, [ + # ('call', 'tpt_callback'), + # ('call', '__exit__'), + # ]) + + self.assertEqual(actions, [ + ('return', '__enter__'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('call', '__exit__'), + ('c_call', '__exit__'), + ]) + + def _trace_switch(self, glet): + with PythonTracer() as actions: + glet.switch() + return actions + + def _check_trace_events_func_already_set(self, glet): + actions = self._trace_switch(glet) + self.assertEqual(actions, [ + ('return', '__enter__'), + ('c_call', '_trace_switch'), + ('call', 'run'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('return', 'run'), + ('c_return', '_trace_switch'), + ('call', '__exit__'), + ('c_call', '__exit__'), + ]) + + def test_trace_events_into_greenlet_func_already_set(self): + def run(): + return tpt_callback() + + self._check_trace_events_func_already_set(greenlet.greenlet(run)) + + def test_trace_events_into_greenlet_subclass_already_set(self): + class X(greenlet.greenlet): + def run(self): + return tpt_callback() + self._check_trace_events_func_already_set(X()) + + def _check_trace_events_from_greenlet_sets_profiler(self, g, tracer): + g.switch() + tpt_callback() + tracer.__exit__() + self.assertEqual(tracer.actions, [ + ('return', '__enter__'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('return', 'run'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('call', '__exit__'), + ('c_call', '__exit__'), + ]) + + + def test_trace_events_from_greenlet_func_sets_profiler(self): + tracer = PythonTracer() + def run(): + tracer.__enter__() + return tpt_callback() + + self._check_trace_events_from_greenlet_sets_profiler(greenlet.greenlet(run), + tracer) + + def test_trace_events_from_greenlet_subclass_sets_profiler(self): + tracer = PythonTracer() + class X(greenlet.greenlet): + def run(self): + tracer.__enter__() + return tpt_callback() + + self._check_trace_events_from_greenlet_sets_profiler(X(), tracer) + + @unittest.skipIf(*ASSERTION_BUILD_PY312) + def test_trace_events_multiple_greenlets_switching(self): + tracer = PythonTracer() + + g1 = None + g2 = None + + def g1_run(): + tracer.__enter__() + tpt_callback() + g2.switch() + tpt_callback() + return 42 + + def g2_run(): + tpt_callback() + tracer.__exit__() + tpt_callback() + g1.switch() + + g1 = greenlet.greenlet(g1_run) + g2 = greenlet.greenlet(g2_run) + + x = g1.switch() + self.assertEqual(x, 42) + tpt_callback() # ensure not in the trace + self.assertEqual(tracer.actions, [ + ('return', '__enter__'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('c_call', 'g1_run'), + ('call', 'g2_run'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('call', '__exit__'), + ('c_call', '__exit__'), + ]) + + @unittest.skipIf(*ASSERTION_BUILD_PY312) + def test_trace_events_multiple_greenlets_switching_siblings(self): + # Like the first version, but get both greenlets running first + # as "siblings" and then establish the tracing. + tracer = PythonTracer() + + g1 = None + g2 = None + + def g1_run(): + greenlet.getcurrent().parent.switch() + tracer.__enter__() + tpt_callback() + g2.switch() + tpt_callback() + return 42 + + def g2_run(): + greenlet.getcurrent().parent.switch() + + tpt_callback() + tracer.__exit__() + tpt_callback() + g1.switch() + + g1 = greenlet.greenlet(g1_run) + g2 = greenlet.greenlet(g2_run) + + # Start g1 + g1.switch() + # And it immediately returns control to us. + # Start g2 + g2.switch() + # Which also returns. Now kick of the real part of the + # test. + x = g1.switch() + self.assertEqual(x, 42) + + tpt_callback() # ensure not in the trace + self.assertEqual(tracer.actions, [ + ('return', '__enter__'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('c_call', 'g1_run'), + ('call', 'tpt_callback'), + ('return', 'tpt_callback'), + ('call', '__exit__'), + ('c_call', '__exit__'), + ]) + + +if __name__ == '__main__': + unittest.main() diff --git a/venv/Lib/site-packages/greenlet/tests/test_version.py b/venv/Lib/site-packages/greenlet/tests/test_version.py new file mode 100644 index 0000000..f302355 --- /dev/null +++ b/venv/Lib/site-packages/greenlet/tests/test_version.py @@ -0,0 +1,46 @@ +#! /usr/bin/env python + +import sys +import os +from unittest import TestCase as NonLeakingTestCase + +import greenlet + +# No reason to run this multiple times under leakchecks, +# it doesn't do anything. +class VersionTests(NonLeakingTestCase): + def test_version(self): + def find_dominating_file(name): + if os.path.exists(name): + return name + + tried = [] + here = os.path.abspath(os.path.dirname(__file__)) + for i in range(10): + up = ['..'] * i + path = [here] + up + [name] + fname = os.path.join(*path) + fname = os.path.abspath(fname) + tried.append(fname) + if os.path.exists(fname): + return fname + raise AssertionError("Could not find file " + name + "; checked " + str(tried)) + + try: + setup_py = find_dominating_file('setup.py') + except AssertionError as e: + self.skipTest("Unable to find setup.py; must be out of tree. " + str(e)) + + + invoke_setup = "%s %s --version" % (sys.executable, setup_py) + with os.popen(invoke_setup) as f: + sversion = f.read().strip() + + if not sversion or not sversion[0].isdigit(): + self.skipTest( + "setup.py --version did not return a version string " + "(likely a setuptools compatibility issue): " + + repr(sversion[:80]) + ) + + self.assertEqual(sversion, greenlet.__version__) diff --git a/venv/Lib/site-packages/greenlet/tests/test_weakref.py b/venv/Lib/site-packages/greenlet/tests/test_weakref.py new file mode 100644 index 0000000..07beda1 --- /dev/null +++ b/venv/Lib/site-packages/greenlet/tests/test_weakref.py @@ -0,0 +1,35 @@ +import gc +import weakref + + +import greenlet +from . import TestCase + +class WeakRefTests(TestCase): + def test_dead_weakref(self): + def _dead_greenlet(): + g = greenlet.greenlet(lambda: None) + g.switch() + return g + o = weakref.ref(_dead_greenlet()) + gc.collect() + self.assertEqual(o(), None) + + def test_inactive_weakref(self): + o = weakref.ref(greenlet.greenlet()) + gc.collect() + self.assertEqual(o(), None) + + def test_dealloc_weakref(self): + seen = [] + def worker(): + try: + greenlet.getcurrent().parent.switch() + finally: + seen.append(g()) + g = greenlet.greenlet(worker) + g.switch() + g2 = greenlet.greenlet(lambda: None, g) + g = weakref.ref(g2) + g2 = None + self.assertEqual(seen, [None])