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

   1 # Copyright 2015 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 $HOME/.gdbinit
  19
  20
  21 # Check that the history size is properly set to SIZE when reading the .gdbinit
  22 # file located in HOME with the environment variable GDBHISTSIZE optionally
  23 # set to GDBHISTSIZE_VAL.
  24
  25 proc test_gdbinit_history_setting { home size { gdbhistsize_val "-" } } {
  26     global env
  27     global INTERNAL_GDBFLAGS
  28     global srcdir
  29     global subdir
  30
  31     save_vars { INTERNAL_GDBFLAGS env(GDBHISTSIZE) env(HOME) } {
  32         set env(HOME) "$srcdir/$subdir/$home"
  33
  34         # The GDBHISTSIZE environment variable takes precedence over whatever
  35         # history size is set in .gdbinit.  Make sure the former is not
  36         # set.
  37         unset -nocomplain env(GDBHISTSIZE)
  38
  39         if { $gdbhistsize_val != "-" } {
  40             set env(GDBHISTSIZE) $gdbhistsize_val
  41         }
  42
  43         set INTERNAL_GDBFLAGS [string map {"-nx" ""} $INTERNAL_GDBFLAGS]
  44
  45         set prefix "home=$home"
  46         if { $gdbhistsize_val != "-" } {
  47             append prefix " gdbhistsize=$gdbhistsize_val"
  48         }
  49
  50         with_test_prefix $prefix {
  51             gdb_exit
  52             gdb_start
  53
  54             gdb_test "show history size" "The size of the command history is $size."
  55
  56             if { $size == "0" } {
  57                 gdb_test_no_output "show commands"
  58             } elseif { $size != "1" } {
  59                 gdb_test "show commands" "    .  show history size\r\n    .  show commands"
  60             }
  61         }
  62     }
  63 }
  64
  65 # Check that the history file does not get truncated to zero when a gdbinit
  66 # file sets the history size to unlimited.
  67
  68 proc test_no_truncation_of_unlimited_history_file { } {
  69     global env
  70     global INTERNAL_GDBFLAGS
  71
  72     save_vars { INTERNAL_GDBFLAGS env(GDBHISTSIZE) } {
  73         # The GDBHISTSIZE environment variable takes precedence over whatever
  74         # history size is set in .gdbinit.  Make sure the former is not
  75         # set.
  76         unset -nocomplain env(GDBHISTSIZE)
  77
  78         set temp_gdbinit [standard_output_file "gdbinit-history.gdbinit"]
  79         set temp_histfile [standard_output_file "gdbinit-history.gdb_history"]
  80         file delete $temp_gdbinit
  81         file delete $temp_histfile
  82
  83         set fd [open $temp_gdbinit "w"]
  84         puts $fd "set history size unlimited\n"
  85         puts $fd "set history filename $temp_histfile\n"
  86         puts $fd "set history save\n"
  87         close $fd
  88
  89         append INTERNAL_GDBFLAGS " -x $temp_gdbinit"
  90
  91         # We have to start then exit GDB twice: the first time to test the creation
  92         # of the initial history file, and the second time to test appending to it.
  93         # In either case the initial "print 1" command should persist through the
  94         # history file.
  95         with_test_prefix "truncation" {
  96             gdb_exit
  97             gdb_start
  98             gdb_test "print 1"
  99
 100             with_test_prefix "creating" {
 101                 gdb_exit
 102                 gdb_start
 103                 gdb_test "server show commands" "    .  print 1.*"
 104             }
 105
 106             with_test_prefix "appending" {
 107                 gdb_exit
 108                 gdb_start
 109                 gdb_test "server show commands" "    .  print 1.*"
 110             }
 111         }
 112     }
 113 }
 114
 115 test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited"
 116 test_gdbinit_history_setting "gdbinit-history/zero" "0"
 117
 118 test_no_truncation_of_unlimited_history_file
 119
 120 # A valid GDBHISTSIZE value overrides the setting inside the .gdbinit file; an
 121 # invalid GDBHISTSIZE value is ignored, falling back on the setting inside the
 122 # .gdbinit file.
 123 test_gdbinit_history_setting "gdbinit-history/unlimited" "1000" "1000"
 124 test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited" "foo"