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

   1 # Copyright (C) 2010-2022 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 # exposing values to 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] then {
  31     return 0
  32 }
  33
  34 global hex decimal
  35 gdb_breakpoint [gdb_get_line_number "Block break here."]
  36 gdb_continue_to_breakpoint "Block break here."
  37
  38 # Test initial innermost block.
  39 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
  40 gdb_py_test_silent_cmd "python block = frame.block()" \
  41     "Get block, initial innermost block" 0
  42 gdb_test "python print (block)" "<gdb.Block object at $hex>" "check block not None"
  43 gdb_test "python print (block.function)" "None" "first anonymous block"
  44 gdb_test "python print (block.start)" "${decimal}" "check start not None"
  45 gdb_test "python print (block.end)" "${decimal}" "check end not None"
  46 gdb_test "python print (block\['f'\].name == 'f')" "True" "check variable access"
  47 gdb_test "python print (block\['nonexistent'\])" ".*KeyError: 'nonexistent'.*" \
  48          "check nonexistent variable"
  49 gdb_test "python print (block\[42\])" ".*TypeError: Expected a string.*" \
  50          "check non-string key"
  51
  52 # Test global/static blocks
  53 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
  54 gdb_py_test_silent_cmd "python block = frame.block()" \
  55     "Get block, frame.block" 0
  56 gdb_test "python print (block.is_global)" "False" "not a global block"
  57 gdb_test "python print (block.is_static)" "False" "not a static block"
  58 gdb_py_test_silent_cmd "python gblock = block.global_block" \
  59     "Get block, global_block" 1
  60 gdb_py_test_silent_cmd "python sblock = block.static_block" \
  61     "Get block, static_block" 1
  62 gdb_test "python print (gblock.is_global)" "True" "is the global block"
  63 gdb_test "python print (sblock.is_static)" "True" "is the static block"
  64
  65 # Move up superblock(s) until we reach function block_func.
  66 gdb_test_no_output "python block = block.superblock" "get superblock"
  67 gdb_test "python print (block.function)" "None" "second anonymous block"
  68 gdb_test_no_output "python block = block.superblock" "get superblock 2"
  69 gdb_test "python print (block.function)" "block_func" \
  70          "Print superblock 2 function"
  71
  72 # Switch frames, then test for main block.
  73 gdb_test "up" ".*"
  74 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame 2" 0
  75 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame 2's block" 0
  76 gdb_test "python print (block)" "<gdb.Block object at $hex>" \
  77          "Check Frame 2's block not None"
  78 gdb_test "python print (block.function)" "main" "main block"
  79
  80
  81 # Test Block is_valid.  This must always be the last test in this
  82 # testcase as it unloads the object file.
  83 delete_breakpoints
  84 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
  85 gdb_py_test_silent_cmd "python block = frame.block()" "Get Frame block" 0
  86 gdb_py_test_silent_cmd "python block_iter = iter (block)" "Get Frame block" 0
  87 gdb_test "python print (block.is_valid())" "True" \
  88          "Check block validity"
  89 gdb_test "python print (block_iter.is_valid())" "True" \
  90          "Check block_iter validity"
  91 gdb_unload
  92 gdb_test "python print (block.is_valid())" "False" \
  93          "Check block validity after unload"
  94 gdb_test "python print (block_iter.is_valid())" "False" \
  95          "Check block_iter validity after unload"