#!/bin/bash

#

# Copyright (C) 2014 Owen Taylor <otaylor@redhat.com>

#

# SPDX-License-Identifier: LGPL-2.0+

#

# This library is free software; you can redistribute it and/or

# modify it under the terms of the GNU Lesser General Public

# License as published by the Free Software Foundation; either

# version 2 of the License, or (at your option) any later version.

#

# This library 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

# Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public

# License along with this library; if not, write to the

# Free Software Foundation, Inc., 59 Temple Place - Suite 330,

# Boston, MA 02111-1307, USA.

set -euo pipefail

. $(dirname $0)/libtest.sh

echo "1..1"

test_usage_output() {

    file=$1; shift

    cmd=$1; shift

    assert_file_has_content $file '^Usage'

    # check that it didn't print twice somehow

    if [ "$(grep --count '^Usage' $file)" != 1 ]; then

      _fatal_print_file "$file" "File '$file' has '^Usage' more than once."

    fi

    assert_file_has_content $file "$cmd"

}

# check that we found at least one command with subcommands

found_subcommands=0

test_recursive() {

    local cmd=$1

    echo "$cmd" 1>&2

    $cmd --help 1>out 2>err

    # --help message goes to standard output

    test_usage_output out "$cmd"

    assert_file_empty err

    # Select the list of commands, for each line, remove the leading spaces, and take the first word(command) of each line

    builtins=`sed -n '/^Builtin \("[^"]*" \)\?Commands:$/,/^$/p' 

    if [ "$builtins" != "" ] ; then

        found_subcommands=1

        # A command with subcommands

        # Running the command without a subcommand should produce the help output, but fail

        rc=0

        $cmd 1>out 2>err || rc=$?

        if [ $rc = 0 ] ; then

            assert_not_reached "missing subcommand but 0 exit status"

        fi

        # error message and usage goes to standard error

        test_usage_output err "$cmd"

        assert_file_has_content err 'No \("[^"]*" sub\)\?command specified'

        assert_file_empty out

        rc=0

        $cmd non-existent-subcommand 1>out 2>err || rc=$?

        if [ $rc = 0 ] ; then

            assert_not_reached "non-existent subcommand but 0 exit status"

        fi

        test_usage_output err "$cmd"

        assert_file_has_content err 'Unknown \("[^"]*" sub\)\?command'

        assert_file_empty out

        for subcmd in $builtins; do

            case "$subcmd" in

                (trivial-httpd)

                    # Skip trivial-httpd if enabled, it doesn't work

                    # uninstalled (and also doesn't produce the output

                    # we expect).

                    ;;

                (*)

                    test_recursive "$cmd $subcmd"

                    ;;

            esac

        done

    fi

}

test_recursive ostree

if [ $found_subcommands != 1 ]; then

  assert_not_reached "no ostree commands with subcommands found!"

fi

echo "ok help option is properly supported"