gdb/testsuite/gdb.tui/resize-2.exp

# Copyright 2023-2026 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 TUI resizing using maint screen info command.

require allow_tui_tests

tuiterm_env

Term::clean_restart 24 80
set screen_dim { 0 0 80 24 }

# Use a layout with just a command window.
gdb_test "tui new-layout command-layout cmd 1"

if {![Term::prepare_for_tui]} {
    unsupported "TUI not supported"
    return 0
}

# Enter TUI.
Term::command_no_prompt_prefix "layout command-layout"

proc check_width { what n } {
    set re "Number of characters $what thinks are in a line is $n"
    Term::check_region_contents "$what width $n" {*}$::screen_dim $re
}

# Check that curses has the correct notion of screen width.
Term::command "maint info screen"
check_width curses 80
check_width gdb 80

# Resize with TUI enabled, wait for the resize message.
Term::resize 40 90
set screen_dim { 0 0 90 40 }

# Check that curses has the correct notion of screen width after resize.
Term::command "maint info screen"
check_width curses 90
check_width gdb 90

# Temporarily disable TUI.
gdb_test_multiple "tui disable" "" {
    -re "$gdb_prompt $" {
	pass $gdb_test_name
    }
}

# Resize with TUI disabled, so don't wait for the resize message.  Instead,
# do it in two steps, and wait for a prompt redisplay for each.  If we do
# this in one step, it's unpredictable how may prompt redisplays we'll get.
Term::resize 24 90 0
set screen_dim { 0 0 90 24 }

gdb_test_multiple "" "prompt redisplays after first resize" {
    -re "\r.*$gdb_prompt $" {
	pass $gdb_test_name
    }
}

Term::resize 24 80 0
set screen_dim { 0 0 80 24 }

gdb_test_multiple "" "prompt redisplays after second resize" {
    -re "\r.*$gdb_prompt $" {
	pass $gdb_test_name
    }
}

# At this point, curses still thinks the width is 90.  This doesn't look
# harmful because TUI is disabled.
gdb_test "maint info screen" \
    "\r\nNumber of characters curses thinks are in a line is 90.\\r\n.*" \
    "curses width after resize with TUI disabled"

# Re-enable TUI.
send_gdb "tui enable\n"
# The "tui enable" command is issued on the CLI screen, on the TUI we have the
# last command issued there: "tui disable".
Term::wait_for "tui disable"

# Check that curses has the correct notion of screen width after screen resize
# with TUI disabled.
Term::command "maint info screen"
with_test_prefix again {
    check_width curses 80
    check_width gdb 80
}