# This file is part of GNU Rush. 
# Copyright (C) 2019-2024 Sergey Poznyakoff
#
# GNU Rush 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, or (at your option)
# any later version.
#
# GNU Rush 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 Rush.  If not, see <http://www.gnu.org/licenses/>.

AT_SETUP([expanding undefined variables])
AT_KEYWORDS([undef])

m4_pushdef([RUSH_ENVIRON],[-i])
AT_RUSH_TEST([
rush 2.0
rule first
  set command = \$COMMAND
],
[cmdline],
[ls],
[1],
[],
[rush: Error: undefined variable: COMMAND
])

AT_RUSH_TEST([
rush 2.0
rule first
  set command = \${COMMAND:-\$command}
],
[cmdline],
[ls],
[0],
[{
    "cmdline":"ls"
}
],
[])

AT_RUSH_TEST([
rush 2.0
global
  expand-undefined true

rule first
  set command = \$COMMAND
],
[cmdline],
[ls],
[0],
[{
    "cmdline":""
}
],
[])
m4_popdef([RUSH_ENVIRON])

AT_CLEANUP
