view tests/failfilemerge.py @ 28248:851c41a21869

blackbox: properly replace ui class

Without this, anyone creating a ui object using: uimod.ui()
skips the blackbox.

Also, anyone doing ui.copy() skipped the blackbox.

Unfortunately, the ui object lifestyle is a bit messy,
the first one that's created is never actually initialized
with subclasses, instead pieces of the subclass are adopted
into the primal ui object. In order to handle this, a
_partialinit method will be called to ensure that the
blackboxui is properly initialized.

# extension to emulate interupting filemerge._filemerge

from __future__ import absolute_import

from mercurial import (
    filemerge,
    extensions,
    error,
)

def failfilemerge(filemergefn,
        premerge, repo, mynode, orig, fcd, fco, fca, labels=None):
    raise error.Abort("^C")
    return filemergefn(premerge, repo, mynode, orig, fcd, fco, fca, labels)

def extsetup(ui):
    extensions.wrapfunction(filemerge, '_filemerge',
                            failfilemerge)