view tests/failfilemerge.py @ 45048:2c0043977b6d stable

archival: abort if compression method is unavailable

`tarfile.CompressionError` is documented to be the "exception for unavailable
compression methods".

Also, make tests conditional on whether the lzma module is available or not.

# extension to emulate interrupting filemerge._filemerge

from __future__ import absolute_import

from mercurial import (
    error,
    extensions,
    filemerge,
)


def failfilemerge(
    filemergefn, premerge, repo, wctx, 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)