gdb/testsuite/gdb.base/empty-host-env-vars.exp

   1 # Copyright 2021-2024 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 test assumes host == build.
  17 require {!is_remote host}
  18
  19 # GDB reads some environment variables on startup, make sure it behaves
  20 # correctly if these variables are defined but empty.
  21
  22 set all_env_vars { HOME XDG_CACHE_HOME LOCALAPPDATA XDG_CONFIG_HOME }
  23
  24 # Record the initial value of the index-cache directory.
  25 clean_restart
  26 set index_cache_directory ""
  27 gdb_test_multiple "show index-cache directory" "" {
  28     -re -wrap "The directory of the index cache is \"(.*)\"\\." {
  29         set index_cache_directory $expect_out(1,string)
  30         set index_cache_directory [string_to_regexp $index_cache_directory]
  31         pass $gdb_test_name
  32     }
  33 }
  34
  35 foreach_with_prefix env_var_name $all_env_vars {
  36     # Restore the original state of the environment variable.
  37     save_vars env($env_var_name) {
  38         set env($env_var_name) {}
  39         clean_restart
  40
  41         # Verify that the empty environment variable didn't affect the
  42         # index-cache directory setting, that we still see the initial value.
  43         # "HOME" is different, because if that  one is unset, GDB isn't even
  44         # able to compute the default location.  In that case, we expect it to
  45         # be empty.
  46         if { $env_var_name == "HOME" } {
  47             gdb_test "show index-cache directory" \
  48                 "The directory of the index cache is \"\"\\."
  49         } else {
  50             gdb_test "show index-cache directory" \
  51                 "The directory of the index cache is \"$index_cache_directory\"\\."
  52         }
  53     }
  54 }
  55
  56 # Try the same, but with all the env vars set to an empty value at the same
  57 # time.
  58 with_test_prefix "all env vars" {
  59     set save_vars_arg {}
  60     foreach env_var_name $all_env_vars {
  61         lappend save_vars_arg env($env_var_name)
  62     }
  63
  64     # Restore the original state of all the environment variables.
  65     save_vars $save_vars_arg {
  66         foreach env_var_name $all_env_vars {
  67             set env($env_var_name) {}
  68         }
  69
  70         clean_restart
  71
  72         gdb_test "show index-cache directory" \
  73             "The directory of the index cache is \"\"\\."
  74     }
  75 }