repoview: do not crash when localtags refers to non existing revisions
This fixes a crash that may happen when using mercurial 3.0.x.
The _gethiddenblockers function assumed that the output of tags.readlocaltags()
was a dict mapping tags to of valid nodes. However this was not necessarily the
case. When a repository had obsolete revisions and had local tag pointing to a
non existing revision was found, many mercurial commands would crash.
This revision fixes the problem by removing any tags from the output of
tags.readlocaltags() which point to invalid nodes.
We may want to add a warning when this happens (although it might be
annoying to get that warning for every command, possibly even more than once per
command).
A test for this problem has been added to test-obsolete.t. Without this fix the
test would output:
$ hg tags
abort: 00changelog.i@3816541e5485: no node!
[255]
Instead of:
$ hg tags
tiptag 2:3816541e5485
tip 2:3816541e5485
visible 0:193e9254ce7e
"""test line matching with some failing examples and some which warn
run-test.t only checks positive matches and can not see warnings
(both by design)
"""
import os, re
# this is hack to make sure no escape characters are inserted into the output
if 'TERM' in os.environ:
del os.environ['TERM']
import doctest
run_tests = __import__('run-tests')
def lm(expected, output):
r"""check if output matches expected
does it generally work?
>>> lm('H*e (glob)\n', 'Here\n')
True
fail on bad test data
>>> try: lm('a\n','a')
... except AssertionError, ex: print ex
missing newline
>>> try: lm('single backslash\n', 'single \backslash\n')
... except AssertionError, ex: print ex
single backslash or unknown char
"""
assert expected.endswith('\n') and output.endswith('\n'), 'missing newline'
assert not re.search(r'[^ \w\\/\r\n()*?]', expected + output), \
'single backslash or unknown char'
match = run_tests.linematch(expected, output)
if isinstance(match, str):
return 'special: ' + match
else:
return bool(match) # do not return match object
def wintests():
r"""test matching like running on windows
enable windows matching on any os
>>> _osaltsep = os.altsep
>>> os.altsep = True
valid match on windows
>>> lm('g/a*/d (glob)\n', 'g\\abc/d\n')
True
direct matching, glob unnecessary
>>> lm('g/b (glob)\n', 'g/b\n')
'special: -glob'
missing glob
>>> lm('/g/c/d/fg\n', '\\g\\c\\d/fg\n')
'special: +glob'
restore os.altsep
>>> os.altsep = _osaltsep
"""
pass
def otherostests():
r"""test matching like running on non-windows os
disable windows matching on any os
>>> _osaltsep = os.altsep
>>> os.altsep = False
backslash does not match slash
>>> lm('h/a* (glob)\n', 'h\\ab\n')
False
direct matching glob can not be recognized
>>> lm('h/b (glob)\n', 'h/b\n')
True
missing glob can not not be recognized
>>> lm('/h/c/df/g/\n', '\\h/c\\df/g\\\n')
False
restore os.altsep
>>> os.altsep = _osaltsep
"""
pass
if __name__ == '__main__':
doctest.testmod()