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import sys
import unittest
import StringIO
import atexit
from test import test_support
class TestCase(unittest.TestCase):
def test_args(self):
# be sure args are handled properly
s = StringIO.StringIO()
sys.stdout = sys.stderr = s
save_handlers = atexit._exithandlers
atexit._exithandlers = []
try:
atexit.register(self.h1)
atexit.register(self.h4)
atexit.register(self.h4, 4, kw="abc")
atexit._run_exitfuncs()
finally:
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
atexit._exithandlers = save_handlers
self.assertEqual(s.getvalue(), "h4 (4,) {'kw': 'abc'}\nh4 () {}\nh1\n")
def test_order(self):
# be sure handlers are executed in reverse order
s = StringIO.StringIO()
sys.stdout = sys.stderr = s
save_handlers = atexit._exithandlers
atexit._exithandlers = []
try:
atexit.register(self.h1)
atexit.register(self.h2)
atexit.register(self.h3)
atexit._run_exitfuncs()
finally:
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
atexit._exithandlers = save_handlers
self.assertEqual(s.getvalue(), "h3\nh2\nh1\n")
def test_sys_override(self):
# be sure a preset sys.exitfunc is handled properly
s = StringIO.StringIO()
sys.stdout = sys.stderr = s
save_handlers = atexit._exithandlers
atexit._exithandlers = []
exfunc = sys.exitfunc
sys.exitfunc = self.h1
reload(atexit)
try:
atexit.register(self.h2)
atexit._run_exitfuncs()
finally:
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
atexit._exithandlers = save_handlers
sys.exitfunc = exfunc
self.assertEqual(s.getvalue(), "h2\nh1\n")
def test_raise(self):
# be sure raises are handled properly
s = StringIO.StringIO()
sys.stdout = sys.stderr = s
save_handlers = atexit._exithandlers
atexit._exithandlers = []
try:
atexit.register(self.raise1)
atexit.register(self.raise2)
self.assertRaises(TypeError, atexit._run_exitfuncs)
finally:
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
atexit._exithandlers = save_handlers
### helpers
def h1(self):
print("h1")
def h2(self):
print("h2")
def h3(self):
print("h3")
def h4(self, *args, **kwargs):
print("h4", args, kwargs)
def raise1(self):
raise TypeError
def raise2(self):
raise SystemError
def test_main():
test_support.run_unittest(TestCase)
if __name__ == "__main__":
test_main()
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