view tests/failfilemerge.py @ 50931:a4ec7a92d2c5 stable

tests: avoid test environment affecting setup.py

In particular [RHG_FALLBACK_EXECUTABLE] is being set prematurely,
before rhg is built, but probably the rest of the env changes don't help,
either.

# 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)