mirror of https://github.com/python/cpython
85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
"""Test cases for traceback module"""
|
|
|
|
import unittest
|
|
from test.test_support import run_unittest, is_jython
|
|
|
|
import traceback
|
|
|
|
class TracebackCases(unittest.TestCase):
|
|
# For now, a very minimal set of tests. I want to be sure that
|
|
# formatting of SyntaxErrors works based on changes for 2.1.
|
|
|
|
def get_exception_format(self, func, exc):
|
|
try:
|
|
func()
|
|
except exc as value:
|
|
return traceback.format_exception_only(exc, value)
|
|
else:
|
|
raise ValueError("call did not raise exception")
|
|
|
|
def syntax_error_with_caret(self):
|
|
compile("def fact(x):\n\treturn x!\n", "?", "exec")
|
|
|
|
def syntax_error_without_caret(self):
|
|
# XXX why doesn't compile raise the same traceback?
|
|
import test.badsyntax_nocaret
|
|
|
|
def syntax_error_bad_indentation(self):
|
|
compile("def spam():\n print(1)\n print(2)", "?", "exec")
|
|
|
|
def test_caret(self):
|
|
err = self.get_exception_format(self.syntax_error_with_caret,
|
|
SyntaxError)
|
|
self.assertEqual(len(err), 4)
|
|
self.assert_(err[1].strip() == "return x!")
|
|
self.assert_("^" in err[2]) # third line has caret
|
|
self.assertEqual(err[1].find("!"), err[2].find("^")) # in the right place
|
|
|
|
def test_nocaret(self):
|
|
if is_jython:
|
|
# jython adds a caret in this case (why shouldn't it?)
|
|
return
|
|
err = self.get_exception_format(self.syntax_error_without_caret,
|
|
SyntaxError)
|
|
self.assertEqual(len(err), 3)
|
|
self.assert_(err[1].strip() == "[x for x in x] = x")
|
|
|
|
def test_bad_indentation(self):
|
|
err = self.get_exception_format(self.syntax_error_bad_indentation,
|
|
IndentationError)
|
|
self.assertEqual(len(err), 4)
|
|
self.assertEqual(err[1].strip(), "print(2)")
|
|
self.assert_("^" in err[2])
|
|
self.assertEqual(err[1].find(")"), err[2].find("^"))
|
|
|
|
def test_base_exception(self):
|
|
# Test that exceptions derived from BaseException are formatted right
|
|
e = KeyboardInterrupt()
|
|
lst = traceback.format_exception_only(e.__class__, e)
|
|
self.assertEqual(lst, ['KeyboardInterrupt\n'])
|
|
|
|
def test_format_exception_only_bad__str__(self):
|
|
class X(Exception):
|
|
def __str__(self):
|
|
1/0
|
|
err = traceback.format_exception_only(X, X())
|
|
self.assertEqual(len(err), 1)
|
|
str_value = '<unprintable %s object>' % X.__name__
|
|
if X.__module__ in ('__main__', 'builtins'):
|
|
str_name = X.__name__
|
|
else:
|
|
str_name = '.'.join([X.__module__, X.__name__])
|
|
self.assertEqual(err[0], "%s: %s\n" % (str_name, str_value))
|
|
|
|
def test_without_exception(self):
|
|
err = traceback.format_exception_only(None, None)
|
|
self.assertEqual(err, ['None\n'])
|
|
|
|
|
|
def test_main():
|
|
run_unittest(TracebackCases)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|