view tests/test-run-tests.py @ 47321:9a3aa54774ff

persistent-nodemap: add a way to make the picked uid predictable

This will make the test less volatile and therefore easier to maintain. I am
setting this is for the persistent nodemap docket first, but my target is to use
similar logic for the revlogv2 (and co) test.

For persisent nodemap, they are too many different in how each test variants (with rust, without rust, etc) needs new uid for this be really useful (right now). However it will be directly useful for the revlogv2 logic.

Differential Revision: https://phab.mercurial-scm.org/D10753

"""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)
"""
from __future__ import absolute_import, print_function

import doctest
import os
import re

# this is hack to make sure no escape characters are inserted into the output
if 'TERM' in os.environ:
    del os.environ['TERM']
run_tests = __import__('run-tests')


def prn(ex):
    m = ex.args[0]
    if isinstance(m, str):
        print(m)
    else:
        print(m.decode('utf-8'))


def lm(expected, output):
    r"""check if output matches expected

    does it generally work?
        >>> lm(b'H*e (glob)\n', b'Here\n')
        True

    fail on bad test data
        >>> try: lm(b'a\n',b'a')
        ... except AssertionError as ex: print(ex)
        missing newline
        >>> try: lm(b'single backslash\n', b'single \backslash\n')
        ... except AssertionError as ex: prn(ex)
        single backslash or unknown char
    """
    assert expected.endswith(b'\n') and output.endswith(
        b'\n'
    ), 'missing newline'
    assert not re.search(
        br'[^ \w\\/\r\n()*?]', expected + output
    ), b'single backslash or unknown char'
    test = run_tests.TTest(b'test-run-test.t', b'.', b'.')
    match, exact = test.linematch(expected, output)
    if isinstance(match, str):
        return 'special: ' + match
    elif isinstance(match, bytes):
        return 'special: ' + match.decode('utf-8')
    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
        >>> _osname = os.name
        >>> os.name = 'nt'

    valid match on windows
        >>> lm(b'g/a*/d (glob)\n', b'g\\abc/d\n')
        True

    direct matching, glob unnecessary
        >>> lm(b'g/b (glob)\n', b'g/b\n')
        'special: -glob'

    missing glob
        >>> lm(b'/g/c/d/fg\n', b'\\g\\c\\d/fg\n')
        True
        >>> lm(b'/g/c/d/fg\n', b'\\g\\c\\d\\fg\r\n')
        True

    restore os.altsep
        >>> os.altsep = _osaltsep
        >>> os.name = _osname
    """
    pass


def otherostests():
    r"""test matching like running on non-windows os

    disable windows matching on any os
        >>> _osaltsep = os.altsep
        >>> os.altsep = False
        >>> _osname = os.name
        >>> os.name = 'nt'

    backslash does not match slash
        >>> lm(b'h/a* (glob)\n', b'h\\ab\n')
        False

    direct matching glob can not be recognized
        >>> lm(b'h/b (glob)\n', b'h/b\n')
        True

    missing glob can not not be recognized
        >>> lm(b'/h/c/df/g/\n', b'\\h/c\\df/g\\\n')
        False

    restore os.altsep
        >>> os.altsep = _osaltsep
        >>> os.name = _osname
    """
    pass


if __name__ == '__main__':
    doctest.testmod()