view tests/failfilemerge.py @ 51916:7ff35f1290c0 stable

run-tests: ensure that --no-rust do not use rust

Since having a valid value in HGWITHRUSTEXT is enough to trigger the use of
rust, we need to unset it before install to be sure.

# 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)