# Copyright 2021-2024 Free Software Foundation, Inc.
# This program 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.
#
# 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, see <http://www.gnu.org/licenses/>.

# Testsuite self-tests for string_to_regexp/string_list_to_regexp.
# The former is not explicitly tested, assuming string_list_to_regexp uses
# string_to_regexp.

set test_nr 0

proc test_regexp { args } {
    global test_nr
    incr test_nr

    set fargs {}
    set farg 1
    foreach arg $args {
	if { $farg } {
	    if { $arg == "--" } {
		set farg 0
		continue
	    }
	    lappend fargs $arg
	} else {
	    set re $arg
	    break
	}
    }
    set res [string_list_to_regexp {*}$fargs]

    set test "#$test_nr: got expected re"
    if { $res eq $re } {
	pass $test
    } else {
	verbose -log "Expecting '$re'"
	verbose -log "Got '$res'"
	fail $test
    }

    set test "#$test_nr: re matches string"
    set str [join $fargs ""]
    if { [regexp $re $str] } {
	pass $test
    } else {
	verbose -log "Matching '$str'"
	verbose -log "Failed against '$re'"
	fail $test
    }
}

test_regexp abc -- abc
test_regexp abc def -- abcdef
test_regexp {\\} -- {\\\\}
test_regexp "\n" -- "\n"
test_regexp {\n} -- {\\n}
test_regexp {\\} n -- {\\\\n}