layouts: fix crash when importing hgsubversion itself (issue #402) Mercurial extensions are a bit weird: they aren't normally in sys.path, so you can't assume that "import hgsubversion" works. Luckily, Mercurial sneaks a little treat into sys.modules so that "import hgext_hgsubversion" does work. In fact, to get things working *as a Mercurial extension*, all that's needed is that trivial change to two import lines, in layouts/detect.py and layouts/standard.py. Unfortunately, hgsubversion is also imported as a Python module, in its own test suite. In that context, there is no "hgext_" trick -- unless we do it in ourselves, which I've done in TestBase.setUp(). That would work fine ... except that test_util imports from hgsubversion, which ends up importing hgsubversion.layouts.{detect,standard}, which want the "hgext_" trick to work. But it hasn't been done yet when we're still importing; it doesn't happen until setUp() runs. So make those two imports happen late, in the functions that need them. Incidentally, this is only necessary to support Mercurial <= 2.7. Mercurial got a bit smarter in 2.8: http://selenic.com/repo/hg/rev/621a26eb3a99

#!/bin/bash
#-*- coding: utf-8 -*-
#
# Generate invalid_utf8.svndump
#

#check svnadmin version, must be >= 1.7
SVNVERSION=$(svnadmin --version | head -n 1 | cut -d \  -f 3)
if [[ "$SVNVERSION" < '1.7' ]] ; then
    echo "You MUST have svn 1.7 or above to use this script"
    exit 1
fi

set -x

TMPDIR=$(mktemp -d)
WD=$(pwd)

cd $TMPDIR

svnadmin create failrepo
svn co file://$PWD/failrepo fail
(
   cd fail
   touch A
   svn add A
   svn ci -m blabargrod
)
svnadmin --pre-1.6-compatible create invalid_utf8
svnadmin dump failrepo | \
    sed "s/blabargrod/$(echo blåbærgrød | iconv -f utf-8 -t latin1)/g" | \
    svnadmin load --bypass-prop-validation invalid_utf8

tar cz -C invalid_utf8 -f "$WD"/invalid_utf8.tar.gz .