view tests/failfilemerge.py @ 50000:1f28172cfce9

debugrebuilddirstate: double check that no transaction is open

Since transaction impact dirstate write, we make sure nobody is trying anything
strange with this internal command.

# extension to emulate interrupting filemerge._filemerge


from mercurial import (
    error,
    extensions,
    filemerge,
)


def failfilemerge(*args, **kwargs):
    raise error.Abort(b"^C")


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