gdb/testsuite/gdb.python/py-cmd.exp

   1 # Copyright (C) 2009-2023 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.  It tests the mechanism
  17 # for defining new GDB commands in Python.
  18
  19 load_lib gdb-python.exp
  20
  21 standard_testfile
  22
  23 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
  24     return -1
  25 }
  26
  27 # Skip all tests if Python scripting is not enabled.
  28 if { [skip_python_tests] } { continue }
  29
  30 if {![runto_main]} {
  31     return 0
  32 }
  33
  34 # Test a simple command.
  35
  36 gdb_test_multiline "input simple command" \
  37   "python" "" \
  38   "class test_cmd (gdb.Command):" "" \
  39   "  def __init__ (self):" "" \
  40   "    super (test_cmd, self).__init__ (\"test_cmd\", gdb.COMMAND_OBSCURE)" "" \
  41   "  def invoke (self, arg, from_tty):" "" \
  42   "    print (\"test_cmd output, arg = %s\" % arg)" "" \
  43   "test_cmd ()" "" \
  44   "end" ""
  45
  46 gdb_test "test_cmd ugh" "test_cmd output, arg = ugh" "call simple command"
  47
  48 # Test a prefix command, and a subcommand within it.
  49
  50 gdb_test_multiline "input prefix command" \
  51   "python" "" \
  52   "class prefix_cmd (gdb.Command):" "" \
  53   "  def __init__ (self):" "" \
  54   "    super (prefix_cmd, self).__init__ (\"prefix_cmd\", gdb.COMMAND_OBSCURE, gdb.COMPLETE_NONE, True)" "" \
  55   "  def invoke (self, arg, from_tty):" "" \
  56   "    print (\"prefix_cmd output, arg = %s\" % arg)" "" \
  57   "prefix_cmd ()" "" \
  58   "end" ""
  59
  60 gdb_test "prefix_cmd ugh" "prefix_cmd output, arg = ugh" "call prefix command"
  61
  62 gdb_test_multiline "input subcommand" \
  63   "python" "" \
  64   "class subcmd (gdb.Command):" "" \
  65   "  def __init__ (self):" "" \
  66   "    super (subcmd, self).__init__ (\"prefix_cmd subcmd\", gdb.COMMAND_OBSCURE)" "" \
  67   "  def invoke (self, arg, from_tty):" "" \
  68   "    print (\"subcmd output, arg = %s\" % arg)" "" \
  69   "subcmd ()" "" \
  70   "end" ""
  71
  72 gdb_test "prefix_cmd subcmd ugh" "subcmd output, arg = ugh" "call subcmd"
  73
  74 # Test prefix command using keyword arguments.
  75
  76 gdb_test_multiline "input prefix command, keyword arguments" \
  77   "python" "" \
  78   "class prefix_cmd2 (gdb.Command):" "" \
  79   "  def __init__ (self):" "" \
  80   "    super (prefix_cmd2, self).__init__ (\"prefix_cmd2\", gdb.COMMAND_OBSCURE, prefix = True, completer_class = gdb.COMPLETE_FILENAME)" "" \
  81   "  def invoke (self, arg, from_tty):" "" \
  82   "    print (\"prefix_cmd2 output, arg = %s\" % arg)" "" \
  83   "prefix_cmd2 ()" "" \
  84   "end" ""
  85
  86 gdb_test "prefix_cmd2 argh" "prefix_cmd2 output, arg = argh" "call prefix command, keyword arguments"
  87
  88 gdb_test_multiline "input subcommand under prefix_cmd2" \
  89   "python" "" \
  90   "class subcmd (gdb.Command):" "" \
  91   "  def __init__ (self):" "" \
  92   "    super (subcmd, self).__init__ (\"prefix_cmd2 subcmd\", gdb.COMMAND_OBSCURE)" "" \
  93   "  def invoke (self, arg, from_tty):" "" \
  94   "    print (\"subcmd output, arg = %s\" % arg)" "" \
  95   "subcmd ()" "" \
  96   "end" ""
  97
  98 gdb_test "prefix_cmd2 subcmd ugh" "subcmd output, arg = ugh" "call subcmd under prefix_cmd2"
  99
 100 # Test a subcommand in an existing GDB prefix.
 101
 102 gdb_test_multiline "input new subcommand" \
 103   "python" "" \
 104   "class newsubcmd (gdb.Command):" "" \
 105   "  def __init__ (self):" "" \
 106   "    super (newsubcmd, self).__init__ (\"info newsubcmd\", gdb.COMMAND_OBSCURE)" "" \
 107   "  def invoke (self, arg, from_tty):" "" \
 108   "    print (\"newsubcmd output, arg = %s\" % arg)" "" \
 109   "newsubcmd ()" "" \
 110   "end" ""
 111
 112 gdb_test "info newsubcmd ugh" "newsubcmd output, arg = ugh" "call newsubcmd"
 113
 114 # Test a command that throws gdb.GdbError.
 115
 116 gdb_test_multiline "input command to throw error" \
 117   "python" "" \
 118   "class test_error_cmd (gdb.Command):" "" \
 119   "  def __init__ (self):" "" \
 120   "    super (test_error_cmd, self).__init__ (\"test_error_cmd\", gdb.COMMAND_OBSCURE)" "" \
 121   "  def invoke (self, arg, from_tty):" "" \
 122   "    raise gdb.GdbError ('you lose!')" "" \
 123   "test_error_cmd ()" "" \
 124   "end" ""
 125
 126 gdb_test "test_error_cmd ugh" "you lose!" "call error command"
 127
 128 # Test gdb.string_to_argv.
 129
 130 gdb_test "python print (gdb.string_to_argv (\"1 2 3\"))" \
 131   {\['1', '2', '3'\]} \
 132   "string_to_argv (\"1 2 3\")"
 133
 134 gdb_test "python print (gdb.string_to_argv (\"'1 2' 3\"))" \
 135   {\['1 2', '3'\]} \
 136   "string_to_argv (\"'1 2' 3\")"
 137
 138 gdb_test "python print (gdb.string_to_argv ('\"1 2\" 3'))" \
 139   {\['1 2', '3'\]} \
 140   "string_to_argv ('\"1 2\" 3')"
 141
 142 gdb_test "python print (gdb.string_to_argv ('1\\ 2 3'))" \
 143   {\['1 2', '3'\]} \
 144     "string_to_argv ('1\\ 2 3')"
 145
 146 # Test user-defined python commands.
 147 gdb_test_multiline "input simple user-defined command" \
 148   "python" "" \
 149   "class test_help (gdb.Command):" "" \
 150   "  \"\"\"Docstring\"\"\"" "" \
 151   "  def __init__ (self):" "" \
 152   "    super (test_help, self).__init__ (\"test_help\", gdb.COMMAND_USER)" "" \
 153   "  def invoke (self, arg, from_tty):" "" \
 154   "    print (\"test_cmd output, arg = %s\" % arg)" "" \
 155   "test_help ()" "" \
 156   "end" ""
 157
 158 gdb_test "test_help ugh" "test_cmd output, arg = ugh" "call simple user-defined command"
 159
 160 # Make sure the command shows up in `help user-defined`.
 161 test_user_defined_class_help {"test_help -- Docstring[\r\n]"}
 162
 163 # Make sure the command does not show up in `show user`.
 164 gdb_test "show user test_help" "Not a user command\." \
 165     "don't show user-defined python command in `show user command`"
 166
 167 # Test expression completion on fields
 168 gdb_test_multiline "expression completion command" \
 169   "python" "" \
 170   "class expr_test (gdb.Command):" "" \
 171   "  def __init__ (self):" "" \
 172   "    super (expr_test, self).__init__ (\"expr_test\", gdb.COMMAND_USER, gdb.COMPLETE_EXPRESSION)" "" \
 173   "  def invoke (self, arg, from_tty):" "" \
 174   "    print (\"invoked on = %s\" % arg)" "" \
 175   "expr_test ()" "" \
 176   "end" ""
 177
 178
 179 gdb_test "complete expr_test bar\." \
 180     "expr_test bar\.bc.*expr_test bar\.ij.*" \
 181     "test completion through complete command"
 182
 183 # Test that the "python" command is correctly recognized as
 184 # inline/multi-line when entering a sequence of commands.
 185 #
 186 # This proc tests PR cli/21688.  The PR is not language-specific, but
 187 # the easiest way is just to test with Python.
 188 proc test_python_inline_or_multiline { } {
 189     global gdb_prompt
 190     set end "\r\n$gdb_prompt $"
 191
 192     set define_cmd_not_inline [ list \
 193         [ list "if 1"                 " >$"            "multi-line if 1" ] \
 194         [ list "python"               " >$"            "multi-line python command" ] \
 195         [ list "print ('hello')"      "  >$"           "multi-line print" ] \
 196         [ list "end"                  " >$"            "multi-line first end" ] \
 197         [ list "end"                  "hello$end"      "multi-line last end" ] ]
 198
 199     # This also tests trailing whitespace on the command.
 200     set define_cmd_alias_not_inline [ list \
 201         [ list "if 1"                 " >$"            "multi-line if 1 alias" ] \
 202         [ list "py    "               " >$"            "multi-line python command alias" ] \
 203         [ list "print ('hello')"      "  >$"           "multi-line print alias" ] \
 204         [ list "end"                  " >$"            "multi-line first end alias" ] \
 205         [ list "end"                  "hello$end"      "multi-line last end alias" ] ]
 206
 207     set define_cmd_alias_foo_not_inline [ list \
 208         [ list "alias foo=python"     "$end"           "multi-line alias foo" ] \
 209         [ list "if 1"                 " >$"            "multi-line if 1 alias foo" ] \
 210         [ list "foo    "              " >$"            "multi-line python command alias foo" ] \
 211         [ list "print ('hello')"      "  >$"           "multi-line print alias foo" ] \
 212         [ list "end"                  " >$"            "multi-line first end alias foo" ] \
 213         [ list "end"                  "hello$end"      "multi-line last end alias foo" ] ]
 214
 215     set define_cmd_inline [ list \
 216         [ list "if 1"                      " >$"          "inline if 1" ] \
 217         [ list "python print ('hello')"    " >$"          "inline python command" ] \
 218         [ list "end"                       "hello$end"    "inline end" ] ]
 219
 220     set define_cmd_alias_inline [ list \
 221         [ list "if 1"                      " >$"          "inline if 1 alias" ] \
 222         [ list "py print ('hello')"        " >$"          "inline python command alias" ] \
 223         [ list "end"                       "hello$end"    "inline end alias" ] ]
 224
 225     set define_cmd_alias_foo_inline [ list \
 226         [ list "if 1"                      " >$"          "inline if 1 alias foo" ] \
 227         [ list "foo print ('hello')"       " >$"          "inline python command alias foo" ] \
 228         [ list "end"                       "hello$end"    "inline end alias foo" ] ]
 229
 230     foreach t [list $define_cmd_not_inline \
 231                $define_cmd_alias_not_inline \
 232                $define_cmd_alias_foo_not_inline \
 233                $define_cmd_inline \
 234                $define_cmd_alias_inline \
 235                $define_cmd_alias_foo_inline] {
 236         foreach l $t {
 237             lassign $l command regex testmsg
 238             gdb_test_multiple "$command" "$testmsg" {
 239                 -re "$regex" {
 240                     pass "$testmsg"
 241                 }
 242             }
 243         }
 244     }
 245 }
 246
 247 test_python_inline_or_multiline
 248
 249 if { [readline_is_used] } {
 250     set test "complete 'expr_test bar.i'"
 251     send_gdb "expr_test bar\.i\t\t"
 252     gdb_test_multiple "" "$test" {
 253         -re "expr_test bar\.ij \\\x07$" {
 254             send_gdb "\n"
 255             gdb_test_multiple "" $test {
 256                 -re "invoked on = bar.ij.*$gdb_prompt $" {
 257                     pass "$test"
 258                 }
 259             }
 260         }
 261     }
 262 }
 263
 264
 265 # Test that interrupting pagination throws a gdb quit.
 266 gdb_test_no_output "set height 10"
 267
 268 gdb_test_multiline "input multi-line-output command" \
 269   "python" "" \
 270   "class test_mline (gdb.Command):" "" \
 271   "  \"\"\"Docstring\"\"\"" "" \
 272   "  def __init__ (self):" "" \
 273   "    super (test_mline, self).__init__ (\"test_multiline\", gdb.COMMAND_USER)" "" \
 274   "  def invoke (self, arg, from_tty):" "" \
 275   "    for f in range(20):" "" \
 276   "      print (\"test_multiline output\")" "" \
 277   "test_mline ()" "" \
 278   "end" ""
 279
 280 set test "verify pagination from test_multiline"
 281 gdb_test_multiple "test_multiline" $test {
 282     -re "--Type <RET>" {
 283         exp_continue
 284     }
 285     -re " for more, q to quit" {
 286         exp_continue
 287     }
 288     -re ", c to continue without paging--$" {
 289         pass $test
 290     }
 291 }
 292
 293 send_gdb "q\n"
 294 set test "verify pagination from test_multiline: q"
 295 gdb_test_multiple "test_multiline" $test {
 296     -re "Error occurred in Python" {
 297         fail $test
 298     }
 299     -re "Quit" {
 300         pass $test
 301     }
 302 }
 303
 304 # Test command redefining itself
 305
 306 proc_with_prefix test_command_redefining_itself {} {
 307     # Start with a fresh gdb
 308     clean_restart
 309
 310
 311     gdb_test_multiline "input command redefining itself" \
 312         "python" "" \
 313         "class redefine_cmd (gdb.Command):" "" \
 314         "  def __init__ (self, msg):" "" \
 315         "    super (redefine_cmd, self).__init__ (\"redefine_cmd\", gdb.COMMAND_OBSCURE)" "" \
 316         "    self._msg = msg" "" \
 317         "  def invoke (self, arg, from_tty):" "" \
 318         "    print (\"redefine_cmd output, msg = %s\" % self._msg)" "" \
 319         "    redefine_cmd (arg)" "" \
 320         "redefine_cmd (\"XXX\")" "" \
 321         "end" ""
 322
 323     gdb_test "redefine_cmd AAA" \
 324         "redefine_cmd output, msg = XXX" \
 325         "call command redefining itself 1"
 326
 327     gdb_test "redefine_cmd BBB" \
 328         "redefine_cmd output, msg = AAA" \
 329         "call command redefining itself 2"
 330 }
 331
 332 test_command_redefining_itself