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

   1 # Copyright 2015-2016 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 $GDBHISTSIZE.
  21 # We cannot expect remote hosts to see environment variables set on the
  22 # local machine.
  23
  24 if { [is_remote host] } {
  25     unsupported "can't set environment variables on remote host"
  26     return -1
  27 }
  28
  29 # Check that the history size is properly set to SIZE when reading the .gdbinit
  30 # file located in HOME with the environment variable GDBHISTSIZE optionally
  31 # set to GDBHISTSIZE_VAL.
  32
  33 proc test_gdbinit_history_setting { home size { gdbhistsize_val "-" } } {
  34     global env
  35     global INTERNAL_GDBFLAGS
  36     global srcdir
  37     global subdir
  38
  39     save_vars { INTERNAL_GDBFLAGS env(GDBHISTSIZE) env(HOME) } {
  40         set env(HOME) "$srcdir/$subdir/$home"
  41
  42         # The GDBHISTSIZE environment variable takes precedence over whatever
  43         # history size is set in .gdbinit.  Make sure the former is not
  44         # set.
  45         unset -nocomplain env(GDBHISTSIZE)
  46
  47         if { $gdbhistsize_val != "-" } {
  48             set env(GDBHISTSIZE) $gdbhistsize_val
  49         }
  50
  51         set INTERNAL_GDBFLAGS [string map {"-nx" ""} $INTERNAL_GDBFLAGS]
  52
  53         set prefix "home=$home"
  54         if { $gdbhistsize_val != "-" } {
  55             append prefix " gdbhistsize=$gdbhistsize_val"
  56         }
  57
  58         with_test_prefix $prefix {
  59             gdb_exit
  60             gdb_start
  61
  62             gdb_test "show history size" "The size of the command history is $size."
  63
  64             if { $size == "0" } {
  65                 gdb_test_no_output "show commands"
  66             } elseif { $size != "1" } {
  67                 gdb_test "show commands" "    .  show history size\r\n    .  show commands"
  68             }
  69         }
  70     }
  71 }
  72
  73 # Check that the history file does not get truncated to zero when a gdbinit
  74 # file sets the history size to unlimited.
  75
  76 proc test_no_truncation_of_unlimited_history_file { } {
  77     global env
  78     global INTERNAL_GDBFLAGS
  79
  80     save_vars { INTERNAL_GDBFLAGS env(GDBHISTSIZE) } {
  81         # The GDBHISTSIZE environment variable takes precedence over whatever
  82         # history size is set in .gdbinit.  Make sure the former is not
  83         # set.
  84         unset -nocomplain env(GDBHISTSIZE)
  85
  86         set temp_gdbinit [standard_output_file "gdbinit-history.gdbinit"]
  87         set temp_histfile [standard_output_file "gdbinit-history.gdb_history"]
  88         file delete $temp_gdbinit
  89         file delete $temp_histfile
  90
  91         set fd [open $temp_gdbinit "w"]
  92         puts $fd "set history size unlimited\n"
  93         puts $fd "set history filename $temp_histfile\n"
  94         puts $fd "set history save\n"
  95         close $fd
  96
  97         append INTERNAL_GDBFLAGS " -x $temp_gdbinit"
  98
  99         # We have to start then exit GDB twice: the first time to test the creation
 100         # of the initial history file, and the second time to test appending to it.
 101         # In either case the initial "print 1" command should persist through the
 102         # history file.
 103         with_test_prefix "truncation" {
 104             gdb_exit
 105             gdb_start
 106             gdb_test "print 1"
 107
 108             with_test_prefix "creating" {
 109                 gdb_exit
 110                 gdb_start
 111                 gdb_test "server show commands" "    .  print 1.*"
 112             }
 113
 114             with_test_prefix "appending" {
 115                 gdb_exit
 116                 gdb_start
 117                 gdb_test "server show commands" "    .  print 1.*"
 118             }
 119         }
 120     }
 121 }
 122
 123 test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited"
 124 test_gdbinit_history_setting "gdbinit-history/zero" "0"
 125
 126 test_no_truncation_of_unlimited_history_file
 127
 128 # A valid GDBHISTSIZE value overrides the setting inside the .gdbinit file; an
 129 # invalid GDBHISTSIZE value is ignored, falling back on the setting inside the
 130 # .gdbinit file.
 131 test_gdbinit_history_setting "gdbinit-history/unlimited" "1000" "1000"
 132 test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited" "foo"