view tests/hgweberror.py @ 46885:fc8a5c9ecee0

win32: enable legacy I/O mode to fix missing pager output on Windows with py3

The equivalent interpreter option is set by wrapper.exe, but this *.bat file is
what gets installed in a venv.  Without this mode, any command that spins up a
pager has no output, unless the pager is explicitly disabled.  The variable is
set inside the `setlocal` scope to keep it from leaking into the environment
after the bat file exits.

We should probably still figure out how to ship a compiled hg.exe when
installing with `pip`, because the binary does other things like enable long
filename support.  But this avoids the dangerous and confusing lack of output in
the meantime.

Differential Revision: https://phab.mercurial-scm.org/D10354

# A dummy extension that installs an hgweb command that throws an Exception.

from __future__ import absolute_import

from mercurial.hgweb import webcommands


def raiseerror(web):
    '''Dummy web command that raises an uncaught Exception.'''

    # Simulate an error after partial response.
    if b'partialresponse' in web.req.qsparams:
        web.res.status = b'200 Script output follows'
        web.res.headers[b'Content-Type'] = b'text/plain'
        web.res.setbodywillwrite()
        list(web.res.sendresponse())
        web.res.getbodyfile().write(b'partial content\n')

    raise AttributeError('I am an uncaught error!')


def extsetup(ui):
    setattr(webcommands, 'raiseerror', raiseerror)
    webcommands.__all__.append(b'raiseerror')