summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_traceback.py
blob: 759cc98c177c40e1fe9b2a83183aed529ec3796f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
"""Test cases for traceback module"""

import unittest
from test_support import run_unittest

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, 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 nocaret

    def test_caret(self):
        err = self.get_exception_format(self.syntax_error_with_caret,
                                        SyntaxError)
        self.assert_(len(err) == 4)
        self.assert_("^" in err[2]) # third line has caret
        self.assert_(err[1].strip() == "return x!")

    def test_nocaret(self):
        err = self.get_exception_format(self.syntax_error_without_caret,
                                        SyntaxError)
        self.assert_(len(err) == 3)
        self.assert_(err[1].strip() == "[x for x in x] = x")

run_unittest(TracebackCases)