new file mode 100755
--- /dev/null
+++ b/tests/test-tree-decomposition
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+# Fails for some reason, need to investigate
+# "$TESTDIR/hghave" git || exit 80
+
+# bail early if the user is already running git-daemon
+echo hi | nc localhost 9418 && exit 80
+
+echo "[extensions]" >> $HGRCPATH
+echo "hggit=$(echo $(dirname $(dirname $0)))" >> $HGRCPATH
+echo 'hgext.bookmarks =' >> $HGRCPATH
+
+GIT_AUTHOR_NAME='test'; export GIT_AUTHOR_NAME
+GIT_AUTHOR_EMAIL='test@example.org'; export GIT_AUTHOR_EMAIL
+GIT_AUTHOR_DATE="2007-01-01 00:00:00 +0000"; export GIT_AUTHOR_DATE
+GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"; export GIT_COMMITTER_NAME
+GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"; export GIT_COMMITTER_EMAIL
+GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"; export GIT_COMMITTER_DATE
+
+count=10
+commit()
+{
+    GIT_AUTHOR_DATE="2007-01-01 00:00:$count +0000"
+    GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
+    git commit "$@" >/dev/null 2>/dev/null || echo "git commit error"
+    count=`expr $count + 1`
+}
+
+mkdir gitrepo
+cd gitrepo
+git init | python -c "import sys; print sys.stdin.read().replace('$(dirname $(pwd))/', '')"
+
+mkdir d1
+touch d1/f1 d1/f2
+git add d1/f1 d1/f2
+git commit -m initial
+
+mkdir d2
+git mv d1/f2 d2/f2
+git commit -m 'rename'
+
+# dulwich does not presently support local git repos, workaround
+cd ..
+git daemon --base-path="$(pwd)"\
+ --listen=localhost\
+ --export-all\
+  --pid-file=gitdaemon.pid \
+ --detach --reuseaddr
+
+hg gclone git://localhost/gitrepo hgrepo
+cd hgrepo
+hg log -r tip --template 'adds: {file_adds}\ndels: {file_dels}\n'
+
+cd ..
+kill `cat gitdaemon.pid`