#!/bin/sh

# GNU Guix --- Functional package management for GNU
# Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
#
# This file is part of GNU Guix.
#
# GNU Guix is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

# Usage: ./test-env COMMAND ARG...
#
# Run the daemon in the build directory, and run COMMAND within
# `pre-inst-env'.  This is used to run unit tests with the just-built
# daemon, unless `--disable-daemon' was passed at configure time.

if [ -x "@abs_top_builddir@/guix-daemon" ]
then
    NIX_SUBSTITUTERS=""		# don't resort to substituters
    NIX_SETUID_HELPER="@abs_top_builddir@/nix-setuid-helper" # normally unused
    NIX_IGNORE_SYMLINK_STORE=1	# in case the store is a symlink
    NIX_STORE_DIR="@GUIX_TEST_ROOT@/store"
    NIX_LOCALSTATE_DIR="@GUIX_TEST_ROOT@/var"
    NIX_LOG_DIR="@GUIX_TEST_ROOT@/var/log/nix"
    NIX_DB_DIR="@GUIX_TEST_ROOT@/db"
    NIX_ROOT_FINDER="@abs_top_builddir@/nix/scripts/list-runtime-roots"

    # Choose a PID-dependent name to allow for parallel builds.  Note
    # that the directory name must be chosen so that the socket's file
    # name is less than 108-char long (the size of `sun_path' in glibc).
    # Currently, in Nix builds, we're at ~106 chars...
    NIX_STATE_DIR="@GUIX_TEST_ROOT@/var/$$" # allow for parallel tests

    export NIX_SUBSTITUTERS NIX_IGNORE_SYMLINK_STORE NIX_STORE_DIR	\
	NIX_LOCALSTATE_DIR NIX_LOG_DIR NIX_STATE_DIR NIX_DB_DIR		\
	NIX_ROOT_FINDER NIX_SETUID_HELPER

    # Do that because store.scm calls `canonicalize-path' on it.
    mkdir -p "$NIX_STORE_DIR"

    # Launch the daemon without chroot support because is may be
    # unavailable, for instance if we're not running as root.
    "@abs_top_builddir@/guix-daemon" --disable-chroot &

    daemon_pid=$!
    trap "kill $daemon_pid ; rm -rf $NIX_STATE_DIR" EXIT
fi

"@abs_top_builddir@/pre-inst-env" "$@"
exit $?
