# Copyright (C) 2023-2024 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/>.

# Test that GDB correctly deallocates the window factory object (a)
# when a window factory is replaced, and (b) during GDB shutdown.
#
# This test also ensures that when a new window is registered (via the
# Python API) with the same name as an existing window, then the
# previous window is replaced.

load_lib gdb-python.exp

tuiterm_env

clean_restart

require allow_tui_tests allow_python_tests

set pyfile [gdb_remote_download host \
		${srcdir}/${subdir}/${gdb_test_file_name}.py]

Term::clean_restart 24 80
if { ![Term::prepare_for_tui] } {
    unsupported "TUI not supported"
    return
}

gdb_test "source ${pyfile}" "Python script imported" \
    "import python scripts"

gdb_test "python register_window_factory('msg_1')" \
    "Entering TestWindowFactory\\.__init__: msg_1"

gdb_test "python register_window_factory('msg_2')" \
    [multi_line \
	 "Entering TestWindowFactory\\.__init__: msg_2" \
	 "Entering TestWindowFactory\\.__del__: msg_1"]

gdb_test_no_output "tui new-layout test test_window 1 cmd 1 status 1"

# Load the custom window layout and ensure that the correct window
# factory was used.
with_test_prefix "msg_2" {
    Term::command_no_prompt_prefix "layout test"
    Term::check_box_contents "check test_window box" 0 0 80 15 \
	"TestWindow \\(msg_2\\)"
}

# Replace the existing window factory with a new one, then switch
# layouts so that GDB recreates the window, and check that the new
# window factory was used.
with_test_prefix "msg_3" {
    Term::command "python register_window_factory('msg_3')"
    Term::check_region_contents "check for python output" \
	0 18 80 2 \
	[multi_line \
	     "Entering TestWindowFactory.__init__: msg_3\\s+" \
	     "Entering TestWindowFactory.__del__: msg_2"]
    Term::command "layout src"
    Term::command "layout test"

    Term::check_box_contents "check test_window box" 0 0 80 15 \
	"TestWindow \\(msg_3\\)"
}

# Restart GDB, setup a TUI window factory, and then check that the
# Python object is deallocated when GDB exits.
with_test_prefix "call __del__ at exit" {
    clean_restart

    gdb_test "source ${pyfile}" "Python script imported" \
	"import python scripts"

    gdb_test "python register_window_factory('msg_1')" \
	"Entering TestWindowFactory\\.__init__: msg_1"

    gdb_test "python register_window_factory('msg_2')" \
	[multi_line \
	     "Entering TestWindowFactory\\.__init__: msg_2" \
	     "Entering TestWindowFactory\\.__del__: msg_1"]

    set saw_window_factory_del 0
    gdb_test_multiple "quit" "" {
	-re "^quit\r\n" {
	    exp_continue
	}
	-re "^Entering TestWindowFactory.__del__: msg_2\r\n" {
	    incr saw_window_factory_del
	    exp_continue
	}
	eof {
	    gdb_assert { $saw_window_factory_del == 1 }
	    pass $gdb_test_name
	}
    }
}