# 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/>.

# Ensure that CLI "display"s aren't double-emitted in MI mode.

load_lib mi-support.exp
set MIFLAGS "-i=mi2"

if {[mi_gdb_start]} {
    continue
}

standard_testfile

if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
    untested "failed to compile"
    return -1
}

mi_delete_breakpoints
mi_gdb_reinitialize_dir $srcdir/$subdir
mi_gdb_load ${binfile}

mi_runto do_tests

# A helper procedure that checks for the display and the line number,
# and the following *stopped.  X is the expected value of "x" and is
# also used in test names.
proc check_cli_display {x show_source} {
    global mi_gdb_prompt

    # Now check for the display and the source line.  We don't check
    # the source line too closely, since it's not really important
    # here, but we do check that the stop happened.
    set stop "\\*stopped,reason=.*\r\n$mi_gdb_prompt$"
    if {$show_source} {
	set src "~\"\[0-9\]+\[^\"\]*\\\\n\"\r\n"
    } else {
	set src ""
    }
    set display "~\"1: x = $x\\\\n\"\r\n"
    gdb_expect {
	-re "^${display}${src}${display}${stop}" {
	    # This case is the bug: the display is shown twice.
	    fail "check display and source line x=$x"
	}
	-re "^${src}${display}${stop}" {
	    verbose -log "got <<<$expect_out(buffer)>>>"
	    pass "check display and source line x=$x"
	}
	-re ".*\r\n$mi_gdb_prompt$" {
	    verbose -log "got <<<$expect_out(buffer)>>>"
	    fail "check display and source line x=$x (unexpected output)"
	}
	timeout {
	    fail "check display and source line x=$x (timeout)"
	}
    }
}

mi_gdb_test "display x" \
    "&\"display x\\\\n\"\r\n~\"1: x = 23\\\\n\"\r\n\\^done" \
    "display x"

if {![mi_send_resuming_command "interpreter-exec console next" next]} {
    pass "next"
}
check_cli_display 24 1

# Also check that displays are shown for -exec-next.
if {![mi_send_resuming_command exec-next exec-next]} {
    pass "-exec-next"
}
check_cli_display 25 0