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293 lines
8.9 KiB
Plaintext
293 lines
8.9 KiB
Plaintext
# Copyright 2015-2023 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the gdb testsuite.
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# Test the setting of "history size" via $HOME/.gdbinit
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# This test depends on being able to set $HOME and $GDBHISTSIZE.
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# We cannot expect remote hosts to see environment variables set on the
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# local machine.
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# Do not run if gdb debug is enabled - it interferes with the command history.
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require !gdb_debug_enabled
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if { [is_remote host] } {
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unsupported "can't set environment variables on remote host"
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return -1
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}
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# Check that the history size is properly set to SIZE when reading the .gdbinit
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# file located in HOME with the environment variable GDBHISTSIZE optionally
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# set to GDBHISTSIZE_VAL.
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proc test_gdbinit_history_setting { home size { gdbhistsize_val "-" } } {
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global env
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global INTERNAL_GDBFLAGS
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global srcdir
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global subdir
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save_vars { INTERNAL_GDBFLAGS env(GDBHISTFILE) env(GDBHISTSIZE) env(HOME) } {
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set env(HOME) "$srcdir/$subdir/$home"
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# These environment variables take precedence over whatever
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# history size is set in .gdbinit. Make sure the former is not
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# set.
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unset -nocomplain env(GDBHISTFILE)
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unset -nocomplain env(GDBHISTSIZE)
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if { $gdbhistsize_val != "-" } {
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set env(GDBHISTSIZE) $gdbhistsize_val
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}
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set INTERNAL_GDBFLAGS [string map {"-nx" ""} $INTERNAL_GDBFLAGS]
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set prefix "home=$home"
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if { $gdbhistsize_val != "-" } {
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append prefix " gdbhistsize=$gdbhistsize_val"
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}
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with_test_prefix $prefix {
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gdb_exit
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gdb_start
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gdb_test "show history size" "The size of the command history is $size."
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if { $size == "0" } {
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gdb_test_no_output "show commands"
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} elseif { $size != "1" } {
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gdb_test "show commands" " . show history size\r\n . show commands"
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}
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}
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}
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}
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# Check that the history file does not get truncated to zero when a gdbinit
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# file sets the history size to unlimited.
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proc test_no_truncation_of_unlimited_history_file { } {
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global env
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global INTERNAL_GDBFLAGS
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save_vars { INTERNAL_GDBFLAGS env(GDBHISTFILE) env(GDBHISTSIZE) } {
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# These environment variables take precedence over whatever
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# history size is set in .gdbinit. Make sure the former is not
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# set.
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unset -nocomplain env(GDBHISTFILE)
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unset -nocomplain env(GDBHISTSIZE)
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set temp_gdbinit [standard_output_file "gdbinit-history.gdbinit"]
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set temp_histfile [standard_output_file "gdbinit-history.gdb_history"]
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file delete $temp_gdbinit
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file delete $temp_histfile
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set fd [open $temp_gdbinit "w"]
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puts $fd "set history size unlimited\n"
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puts $fd "set history filename $temp_histfile\n"
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puts $fd "set history save\n"
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close $fd
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append INTERNAL_GDBFLAGS " -x $temp_gdbinit"
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# We have to start then exit GDB twice: the first time to test the creation
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# of the initial history file, and the second time to test appending to it.
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# In either case the initial "print 1" command should persist through the
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# history file.
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with_test_prefix "truncation" {
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gdb_exit
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gdb_start
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gdb_test "print 1"
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with_test_prefix "creating" {
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gdb_exit
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gdb_start
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gdb_test "server show commands" " . print 1.*"
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}
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with_test_prefix "appending" {
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gdb_exit
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gdb_start
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gdb_test "server show commands" " . print 1.*"
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}
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}
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}
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}
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# Check that the current command history matches HIST, which is a list
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# of commands, oldest fist.
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proc check_history { hist } {
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# The show commands we issue here always appears last in the
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# commands list.
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lappend hist "show commands"
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# Number all of the entries in the HIST list and convert the list
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# into a pattern to match against GDB.
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set hist_lines [list]
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set idx 1
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foreach h $hist {
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lappend hist_lines " $idx $h"
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incr idx
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}
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if { [llength $hist_lines] == 1 } {
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set pattern [lindex $hist_lines 0]
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} else {
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set pattern [eval multi_line $hist_lines]
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}
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# Check the history.
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gdb_test "show commands" "$pattern.*"
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}
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# Run 'show history filename' and check the output contains the
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# filename matching PATTERN, unless, PATTERN is the empty string, in
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# which case match a different output that GDB will give if the
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# history filename is the empty string.
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#
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# TESTNAME is the name for the test, which defaults to the command run
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# in the test.
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proc check_history_filename { pattern {testname ""} } {
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set cmd "show history filename"
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if { $testname == "" } {
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set testname $cmd
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}
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if { $pattern == "" } {
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gdb_test $cmd \
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"There is no filename currently set for recording the command history in." \
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$testname
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} else {
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gdb_test $cmd \
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"The filename in which to record the command history is \"$pattern\"\." \
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$testname
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}
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}
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# Tests for how GDB handles setting the history filename to the empty
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# string.
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proc test_empty_history_filename { } {
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global env
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global gdb_prompt
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set common_history [list "set height 0" "set width 0"]
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set test_dir [standard_output_file history_test]
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remote_exec host "mkdir -p $test_dir"
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foreach entry { { ".gdb_history" "xxxxx" } \
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{ "_gdb_history" "xxxxx" } \
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{ "alt_history" "yyyyy" } } {
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set fn [lindex $entry 0]
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set content [lindex $entry 1]
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set fd [open [standard_output_file "$test_dir/$fn"] w]
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puts $fd "$content"
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close $fd
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}
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with_cwd "$test_dir" {
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with_test_prefix "load default history file" {
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# Start GDB and see that the history file was loaded
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# correctly.
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gdb_exit
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gdb_start
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check_history [concat "xxxxx" $common_history]
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check_history_filename ".*/.gdb_history"
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}
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with_test_prefix "load GDBHISTFILE history file" {
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# Now restart GDB with GDBHISTFILE set to see that the
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# "other" history file is loaded.
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save_vars { env(GDBHISTFILE) } {
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setenv GDBHISTFILE \
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"$test_dir/alt_history"
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gdb_exit
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gdb_start
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check_history [concat "yyyyy" $common_history]
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check_history_filename ".*/alt_history"
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}
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}
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with_test_prefix "GDBHISTFILE is empty" {
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# Now restart GDB with GDBHISTFILE set to indicate don't
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# load any history file, check none was loaded.
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save_vars { env(GDBHISTFILE) } {
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setenv GDBHISTFILE ""
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gdb_exit
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gdb_start
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check_history $common_history
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check_history_filename ""
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}
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# Check that 'show history save' does the right thing when
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# the history filename is the empty string.
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gdb_test_no_output "set history save off" \
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"ensure history save is off initially"
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gdb_test "show history save" \
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"Saving of the history record on exit is off." \
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"Check history save is off"
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gdb_test_no_output "set history save on"
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gdb_test "show history save" \
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"Saving of the history is disabled due to the value of 'history filename'." \
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"Check history save is off due to filename"
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gdb_test_no_output \
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"set history filename $test_dir/alt_history" \
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"set history filename at the command line"
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check_history_filename ".*/alt_history" \
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"check filename after setting at the command line"
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gdb_test "show history save" \
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"Saving of the history record on exit is on." \
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"Check history save is on"
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gdb_test_no_output "set history filename"
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gdb_test "show history save" \
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"Saving of the history is disabled due to the value of 'history filename'." \
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"Check history save is off due to filename again"
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gdb_test_no_output "set history save off"
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}
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with_test_prefix "Use -ex to clear history file" {
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# Now restart GDB with the command line '-ex' to indicate
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# no history file should be loaded.
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gdb_exit
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if {[gdb_spawn_with_cmdline_opts \
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"-ex \"set history filename\""] != 0} {
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fail "spawn"
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return
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}
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set test "initial prompt"
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gdb_test_multiple "" $test {
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-re ".*$gdb_prompt $" {
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pass "$test"
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}
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}
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check_history [list]
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check_history_filename ""
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}
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}
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}
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test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited"
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test_gdbinit_history_setting "gdbinit-history/zero" "0"
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test_no_truncation_of_unlimited_history_file
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# A valid GDBHISTSIZE value overrides the setting inside the .gdbinit file; an
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# invalid GDBHISTSIZE value is ignored, falling back on the setting inside the
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# .gdbinit file.
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test_gdbinit_history_setting "gdbinit-history/unlimited" "1000" "1000"
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test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited" "foo"
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# Check handling of empty history filename.
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test_empty_history_filename
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