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"""
Tests for some Ironpython peculiarities.
Pyro - Python Remote Objects. Copyright by Irmen de Jong (irmen@razorvine.net).
"""
import sys
import pickle
import unittest
import Pyro4.util
if sys.platform == "cli":
class IronPythonWeirdnessTests(unittest.TestCase):
def testExceptionWithAttrsPickle(self):
# ironpython doesn't pickle exception attributes
# Bug report is at https://github.com/IronLanguages/main/issues/943
# Bug is still present in Ironpython 2.7.7
ex = ValueError("some exception")
ex.custom_attribute = 42
ex2 = pickle.loads(pickle.dumps(ex))
self.assertTrue(hasattr(ex, "custom_attribute"))
self.assertFalse(hasattr(ex2, "custom_attribute")) # custom attribute will be gone after pickling
self.assertNotEqual(ex2, ex) # the object won't be equal
def testExceptionReduce(self):
# ironpython doesn't pickle exception attributes
# Bug report is at https://github.com/IronLanguages/main/issues/943
# Bug is still present in Ironpython 2.7.7
ex = ValueError("some exception")
ex.custom_attribute = 42
r = ex.__reduce__()
# the reduce result should be:
# (ValueError, ("some exception",), {"custom_attribute": 42})
# but in Ironpython the custom attributes are not returned.
self.assertNotEqual((ValueError, ("some exception",), {"custom_attribute": 42}), r)
self.assertEqual((ValueError, ("some exception",)), r)
def testTbFrame(self):
# there's some stuff missing on traceback frames
# this prevents a detailed stack trace to be printed by
# the functions in util.py, for instance.
def crash():
a = 1
b = 0
return a // b
try:
crash()
except:
ex_t, ex_v, ex_tb = sys.exc_info()
while ex_tb.tb_next:
ex_tb = ex_tb.tb_next
self.assertIsNone(ex_tb.tb_frame.f_back) # should not be none... :(
def testExceptionArgs(self):
x = ZeroDivisionError("division by zero", "arg1", "arg2")
x.customattribute = 42
Pyro4.util.fixIronPythonExceptionForPickle(x, True)
arg = x.args[-1]
self.assertIsInstance(arg, dict)
self.assertTrue(arg["__ironpythonargs__"])
self.assertEqual(42, arg["customattribute"])
x = ZeroDivisionError("division by zero", "arg1", "arg2")
x.args += ({"__ironpythonargs__": True, "customattribute2": 99},)
Pyro4.util.fixIronPythonExceptionForPickle(x, False)
self.assertEqual(99, x.customattribute2)
if __name__ == "__main__":
unittest.main()
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