gdb/testsuite/gdb.base/gdbinit-history.exp

   1 # Copyright 2015-2019 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file is part of the gdb testsuite.
  17
  18 # Test the setting of "history size" via $HOME/.gdbinit
  19
  20 # This test depends on being able to set $HOME and $GDBHISTSIZE.
  21 # We cannot expect remote hosts to see environment variables set on the
  22 # local machine.
  23
  24 if { [is_remote host] } {
  25     unsupported "can't set environment variables on remote host"
  26     return -1
  27 }
  28
  29 # Check that the history size is properly set to SIZE when reading the .gdbinit
  30 # file located in HOME with the environment variable GDBHISTSIZE optionally
  31 # set to GDBHISTSIZE_VAL.
  32
  33 proc test_gdbinit_history_setting { home size { gdbhistsize_val "-" } } {
  34     global env
  35     global INTERNAL_GDBFLAGS
  36     global srcdir
  37     global subdir
  38
  39     save_vars { INTERNAL_GDBFLAGS env(GDBHISTFILE) env(GDBHISTSIZE) env(HOME) } {
  40         set env(HOME) "$srcdir/$subdir/$home"
  41
  42         # These environment variables take precedence over whatever
  43         # history size is set in .gdbinit.  Make sure the former is not
  44         # set.
  45         unset -nocomplain env(GDBHISTFILE)
  46         unset -nocomplain env(GDBHISTSIZE)
  47
  48         if { $gdbhistsize_val != "-" } {
  49             set env(GDBHISTSIZE) $gdbhistsize_val
  50         }
  51
  52         set INTERNAL_GDBFLAGS [string map {"-nx" ""} $INTERNAL_GDBFLAGS]
  53
  54         set prefix "home=$home"
  55         if { $gdbhistsize_val != "-" } {
  56             append prefix " gdbhistsize=$gdbhistsize_val"
  57         }
  58
  59         with_test_prefix $prefix {
  60             gdb_exit
  61             gdb_start
  62
  63             gdb_test "show history size" "The size of the command history is $size."
  64
  65             if { $size == "0" } {
  66                 gdb_test_no_output "show commands"
  67             } elseif { $size != "1" } {
  68                 gdb_test "show commands" "    .  show history size\r\n    .  show commands"
  69             }
  70         }
  71     }
  72 }
  73
  74 # Check that the history file does not get truncated to zero when a gdbinit
  75 # file sets the history size to unlimited.
  76
  77 proc test_no_truncation_of_unlimited_history_file { } {
  78     global env
  79     global INTERNAL_GDBFLAGS
  80
  81     save_vars { INTERNAL_GDBFLAGS env(GDBHISTFILE) env(GDBHISTSIZE) } {
  82         # These environment variables take precedence over whatever
  83         # history size is set in .gdbinit.  Make sure the former is not
  84         # set.
  85         unset -nocomplain env(GDBHISTFILE)
  86         unset -nocomplain env(GDBHISTSIZE)
  87
  88         set temp_gdbinit [standard_output_file "gdbinit-history.gdbinit"]
  89         set temp_histfile [standard_output_file "gdbinit-history.gdb_history"]
  90         file delete $temp_gdbinit
  91         file delete $temp_histfile
  92
  93         set fd [open $temp_gdbinit "w"]
  94         puts $fd "set history size unlimited\n"
  95         puts $fd "set history filename $temp_histfile\n"
  96         puts $fd "set history save\n"
  97         close $fd
  98
  99         append INTERNAL_GDBFLAGS " -x $temp_gdbinit"
 100
 101         # We have to start then exit GDB twice: the first time to test the creation
 102         # of the initial history file, and the second time to test appending to it.
 103         # In either case the initial "print 1" command should persist through the
 104         # history file.
 105         with_test_prefix "truncation" {
 106             gdb_exit
 107             gdb_start
 108             gdb_test "print 1"
 109
 110             with_test_prefix "creating" {
 111                 gdb_exit
 112                 gdb_start
 113                 gdb_test "server show commands" "    .  print 1.*"
 114             }
 115
 116             with_test_prefix "appending" {
 117                 gdb_exit
 118                 gdb_start
 119                 gdb_test "server show commands" "    .  print 1.*"
 120             }
 121         }
 122     }
 123 }
 124
 125 test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited"
 126 test_gdbinit_history_setting "gdbinit-history/zero" "0"
 127
 128 test_no_truncation_of_unlimited_history_file
 129
 130 # A valid GDBHISTSIZE value overrides the setting inside the .gdbinit file; an
 131 # invalid GDBHISTSIZE value is ignored, falling back on the setting inside the
 132 # .gdbinit file.
 133 test_gdbinit_history_setting "gdbinit-history/unlimited" "1000" "1000"
 134 test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited" "foo"