#! /bin/sh -e
# tup - A file-based build system
#
# Copyright (C) 2009-2018  Mike Shal <marfey@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# Make sure things work when a command tries to read from a ghost node, and
# then later a command is created that writes to that node. We should get
# yelled at that the input was unspecified.

. ./tup.sh
cat > ok.sh << HERE
cat ghost 2>/dev/null || echo nofile
HERE
chmod +x ok.sh

cat > Tupfile << HERE
: |> ./ok.sh > %o |> output.txt
HERE
tup touch Tupfile
update
echo nofile | diff - output.txt

cat > Tupfile << HERE
: |> echo yo > %o |> ghost
: |> ./ok.sh > %o |> output.txt
HERE
tup touch Tupfile
update_fail

cat > Tupfile << HERE
: |> echo yo > %o |> ghost
: ghost |> ./ok.sh > %o |> output.txt
HERE
tup touch Tupfile
update
echo yo | diff - output.txt

eotup
