mit neuen venv und exe-Files

venv3_12/Lib/site-packages/gevent/tests/test__signal.py

@@ -0,0 +1,107 @@
+from __future__ import print_function
+import signal
+import gevent.testing as greentest
+import gevent
+
+class Expected(Exception):
+    pass
+
+
+def raise_Expected():
+    raise Expected('TestSignal')
+
+
+@greentest.skipUnless(hasattr(signal, 'SIGALRM'),
+                      "Uses SIGALRM")
+class TestSignal(greentest.TestCase):
+
+    error_fatal = False
+    __timeout__ = greentest.LARGE_TIMEOUT
+
+    def test_handler(self):
+        with self.assertRaises(TypeError):
+            gevent.signal_handler(signal.SIGALRM, 1)
+
+    def test_alarm(self):
+        sig = gevent.signal_handler(signal.SIGALRM, raise_Expected)
+        self.assertFalse(sig.ref)
+        sig.ref = True
+        self.assertTrue(sig.ref)
+        sig.ref = False
+
+        def test():
+            signal.alarm(1)
+            with self.assertRaises(Expected) as exc:
+                gevent.sleep(2)
+
+            ex = exc.exception
+            self.assertEqual(str(ex), 'TestSignal')
+
+        try:
+            test()
+            # also let's check that the handler stays installed.
+            test()
+        finally:
+            sig.cancel()
+
+    @greentest.ignores_leakcheck
+    def test_reload(self):
+        # The site module tries to set attributes
+        # on all the modules that are loaded (specifically, __file__).
+        # If gevent.signal is loaded, and is our compatibility shim,
+        # this used to fail on Python 2: sys.modules['gevent.signal'] has no
+        # __loader__ attribute, so site.py's main() function tries to do
+        # gevent.signal.__file__ = os.path.abspath(gevent.signal.__file__), which
+        # used to not be allowed. (Under Python 3, __loader__ is present so this
+        # doesn't happen). See
+        # https://github.com/gevent/gevent/issues/805
+
+        # This fails on Python 3.5 under linux (travis CI) but not
+        # locally on macOS with (for both libuv and libev cffi); sometimes it
+        # failed with libuv on Python 3.6 too, but not always:
+        #   AttributeError: cffi library 'gevent.libuv._corecffi' has no function,
+        #      constant or global variable named '__loader__'
+        # which in turn leads to:
+        #   SystemError: <built-in function getattr> returned a result with an error set
+
+        # It's not safe to continue after a SystemError, so we just skip the test there.
+
+        # As of Jan 2018 with CFFI 1.11.2 this happens reliably on macOS 3.6 and 3.7
+        # as well.
+
+        # See https://bitbucket.org/cffi/cffi/issues/352/systemerror-returned-a-result-with-an
+
+        # This is fixed in 1.11.3
+
+        import gevent.signal # make sure it's in sys.modules pylint:disable=redefined-outer-name
+        assert gevent.signal
+        import site
+        if greentest.PY3:
+            from importlib import reload as reload_module
+        else:
+            # builtin on py2
+            reload_module = reload # pylint:disable=undefined-variable
+
+        try:
+            reload_module(site)
+        except TypeError:
+            # Non-CFFI on Travis triggers this, for some reason,
+            # but only on 3.6, not 3.4 or 3.5, and not yet on 3.7.
+
+            # The only module seen to trigger this is __main__, i.e., this module.
+
+            # This is hard to trigger in a virtualenv since it appears they
+            # install their own site.py, different from the one that ships with
+            # Python 3.6., and at least the version I have doesn't mess with
+            # __cached__
+            assert greentest.PY36
+            import sys
+            for m in set(sys.modules.values()):
+                try:
+                    if m.__cached__ is None:
+                        print("Module has None __cached__", m, file=sys.stderr)
+                except AttributeError:
+                    continue
+
+if __name__ == '__main__':
+    greentest.main()