tests/failfilemerge.py

tests: rename 'test-module-import.t' into 'test-check-module-import.t'

This test is checking our source code to ensure style and correct behavior (eg:
no cycle). Current convention is that such tests starts with 'test-check-' so we
flock this on back with the others.

# extension to emulate interupting filemerge._filemerge

from __future__ import absolute_import

from mercurial import (
    filemerge,
    extensions,
    error,
)

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)