view tests/failfilemerge.py @ 29185:28e7f590be2d

test: extract develwarn transaction testing in its own command

The lack of locking for a transation is about to change from a warning to an
error. We first extract the test decidated to this warning to make the next
changeset clearer.

# extension to emulate interupting filemerge._filemerge

from __future__ import absolute_import

from mercurial import (
    error,
    extensions,
    filemerge,
)

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)