# This testcase is part of GDB, the GNU debugger.

# Copyright 2019-2021 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/>.

# Test the "default-args" arguments and completion of alias command.

load_lib completion-support.exp

standard_testfile .c

if {[build_executable "failed to prepare" $testfile $srcfile debug]} {
    return -1
}

clean_restart $binfile

# Basic/core tests using user-visible commands.
with_test_prefix "basics" {
    # Define an alias to pretty print something.
    gdb_test "print g_s" " = {a = 1, b = 2, c = 3}" "simple print"
    gdb_test_no_output "alias PP = print -pretty --" "alias PP"
    gdb_test "help PP" "print, PP, inspect, p\r\n  alias PP = print -pretty --\r\n.*"
    gdb_test "PP g_s" \
	[multi_line  \
	     " = {" \
	     "  a = 1," \
	     "  b = 2," \
	     "  c = 3" \
	     "}"]

    # Define an alias of frame apply all with some default args.
    gdb_test_no_output "alias frame apply tout = frame apply all -past-entry -past-main" \
	"alias frame apply tout"
    gdb_test "help frame apply tout" \
	"frame apply all, frame apply tout\r\n  alias frame apply tout = frame apply all -past-entry -past-main\r\n.*"

    # Show all aliases.
    gdb_test "help aliases" \
	[multi_line  \
	     "User-defined aliases of other commands." \
	     "" \
	     "List of commands:" \
	     "" \
	     "PP -- Print value of expression EXP." \
	     "  alias PP = print -pretty --" \
	     "frame apply tout -- Apply a command to all frames." \
	     "  alias frame apply tout = frame apply all -past-entry -past-main" \
	     ".*" ] \
	"help aliases"
}

# Check errors.
with_test_prefix "errors" {
    # Try an unknown root setting.
    gdb_test "alias wrong = xxxx yyyy -someoption" \
	"Undefined command: \"xxxx\".  Try \"help\"\\."

    # Try ambiguous command.
    gdb_test "alias wrong = a" \
	"Ambiguous command \"a\":.*" "ambiguous a"
    gdb_test "alias wrong = frame a" \
	"Ambiguous frame command \"a\":.*" "ambiguous frame a"
}


# Check completion.
with_test_prefix "completion" {
    test_gdb_complete_unique \
	"alias set pri" \
	"alias set print"

    test_gdb_complete_unique \
	"alias set print items = set pri" \
	"alias set print items = set print"

    test_gdb_complete_unique \
	"alias set print items = set print ele" \
	"alias set print items = set print elements"

   test_gdb_complete_unique \
	"alias btfu = backt" \
	"alias btfu = backtrace"

   test_gdb_complete_unique \
	"alias btfu = backtrace -fu" \
	"alias btfu = backtrace -full"

   test_gdb_complete_unique \
	"alias btfu = backtrace -full -past-e" \
	"alias btfu = backtrace -full -past-entry"

    gdb_test_no_output "alias btfu = backtrace -full -past-entry" \
	"alias btfu"

}

# Check alias of alias.
with_test_prefix "alias_of_alias" {
    # Verify we can alias an alias that has no default args.
    # We allow an alias of an alias, to be backward compatible with
    # GDB 9.1 .
    gdb_test_no_output "alias aaa = backtrace"
    gdb_test_no_output "alias bbb = backtrace"

    # Verify that we cannot define an alias of an alias that has default args.
    gdb_test_no_output "alias ccc = backtrace -full"
    gdb_test "alias ddd = ccc" \
	"Cannot define an alias of an alias that has default args"

}