tests/hgweberror.py

remotefilelog: actually fix (and test this time) a bytes vs str issue

I attempted this in 94670e124d29 but we didn't actually have any tests for this
function it seems, and I mistook "it works now" for it being fixed (when what
had actually happened was that my cache had populated enough that I didn't
trigger the minimum threshold on my reattempts).

Differential Revision: https://phab.mercurial-scm.org/D7785

# 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')