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"""Misc. exception related tests
Made for Jython.
"""
import sys
import unittest
from javatests import StackOverflowErrorTest
from test import test_support
class C:
def __str__(self):
raise Exception("E")
def __repr__(self):
raise Exception("S")
class ExceptionsTestCase(unittest.TestCase):
def test_keyerror_str(self):
self.assertEquals(str(KeyError()), '')
# Is actually repr(args[0])
self.assertEquals(str(KeyError('')), "''")
self.assertEquals(str(KeyError('', '')), "('', '')")
#From bugtests/test076.py
def test_raise_no_arg(self):
r = None
try:
try:
raise RuntimeError("dummy")
except RuntimeError:
raise
except RuntimeError, e:
r = str(e)
self.assertEquals(r, "dummy")
def testBugFix1149372(self):
try:
c = C()
str(c)
except Exception, e:
assert e.args[0] == "E"
return
unittest.fail("if __str__ raises an exception, re-raise")
def test_wrap_StackOverflowError(self):
with self.assertRaises(RuntimeError) as cm:
StackOverflowErrorTest.throwStackOverflowError()
self.assertEqual(
cm.exception.message,
"maximum recursion depth exceeded (Java StackOverflowError)")
with self.assertRaises(RuntimeError) as cm:
StackOverflowErrorTest.causeStackOverflowError()
self.assertEqual(
cm.exception.message,
"maximum recursion depth exceeded (Java StackOverflowError)")
def test_unicode_args(self):
e = RuntimeError(u"Drink \u2615") # coffee emoji
# Can take the repr of any object
self.assertEqual(repr(e), "RuntimeError(u'Drink \u2615',)")
# Cannot of course turn a non-ascii Unicode object into a str, even if it's an exception object
with self.assertRaises(UnicodeEncodeError) as cm:
str(e)
self.assertEqual(
str(cm.exception),
"'ascii' codec can't encode character u'\u2615' in position 6: ordinal not in range(128)")
# But the exception hook, via Py#displayException, does not fail when attempting to __str__ the exception args
with test_support.captured_stderr() as s:
sys.excepthook(RuntimeError, u"Drink \u2615", None)
# At minimum, it tells us what kind of exception it was
self.assertEqual(s.getvalue()[:12], "RuntimeError")
# It is fine with ascii values, of course
with test_support.captured_stderr() as s:
sys.excepthook(RuntimeError, u"Drink java", None)
self.assertEqual(s.getvalue(), "RuntimeError: Drink java\n")
def test_main():
test_support.run_unittest(ExceptionsTestCase)
if __name__ == '__main__':
test_main()
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