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

   1 # Copyright (C) 2009 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 # of exposing types to Python.
  18
  19 if $tracelevel then {
  20     strace $tracelevel
  21 }
  22
  23 set testfile "py-type"
  24 set srcfile ${testfile}.c
  25 set binfile ${objdir}/${subdir}/${testfile}
  26
  27 # Build inferior to language specification.
  28 proc build_inferior {lang} {
  29   global srcdir subdir srcfile binfile testfile hex
  30
  31   if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable "debug $lang"] != "" } {
  32       untested "Couldn't compile ${srcfile} in $lang mode"
  33       return -1
  34   }
  35 }
  36
  37 # Restart GDB, set breakpoint and run to that breakpoint.
  38 proc restart_gdb {bp} {
  39   global srcdir subdir srcfile binfile testfile hex
  40
  41   gdb_exit
  42   gdb_start
  43   gdb_reinitialize_dir $srcdir/$subdir
  44   gdb_load ${binfile}
  45
  46   if ![runto_main ] then {
  47       perror "couldn't run to breakpoint"
  48       return
  49   }
  50
  51   gdb_breakpoint [gdb_get_line_number $bp]
  52   gdb_continue_to_breakpoint $bp
  53 }
  54
  55
  56 # Run a command in GDB, and report a failure if a Python exception is thrown.
  57 # If report_pass is true, report a pass if no exception is thrown.
  58 proc gdb_py_test_silent_cmd {cmd name report_pass} {
  59   global gdb_prompt
  60
  61   gdb_test_multiple $cmd $name {
  62       -re "Traceback.*$gdb_prompt $"  { fail $name }
  63       -re "$gdb_prompt $"             { if $report_pass { pass $name } }
  64   }
  65 }
  66
  67 proc test_fields {lang} {
  68   global gdb_prompt
  69
  70   if {$lang == "c++"} {
  71       # Test usage with a class
  72       gdb_py_test_silent_cmd "print c" "print value" 1
  73       gdb_py_test_silent_cmd "python c = gdb.history (0)" "get value from history" 1
  74       gdb_py_test_silent_cmd "python fields = c.type.fields()" "get fields" 1
  75       gdb_test "python print len(fields)" "2" "Check number of fields"
  76       gdb_test "python print fields\[0\].name" "c" "Check class field c name"
  77       gdb_test "python print fields\[1\].name" "d" "Check class field d name"
  78   }
  79
  80   # Test normal fields usage in structs.
  81   gdb_py_test_silent_cmd "print st" "print value" 1
  82   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
  83   gdb_py_test_silent_cmd "python fields = st.type.fields()" "get fields" 1
  84   gdb_test "python print len(fields)" "2" "Check number of fields"
  85   gdb_test "python print fields\[0\].name" "a" "Check structure field a name"
  86   gdb_test "python print fields\[1\].name" "b" "Check structure field b name"
  87
  88   # Test regression PR python/10805
  89   gdb_py_test_silent_cmd "print ar" "print value" 1
  90   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
  91   gdb_test "python fields = ar.type.fields()"
  92   gdb_test "python print len(fields)" "1" "Check the number of fields"
  93   gdb_test "python print fields\[0\].type" "<range type>" "Check array field type"
  94 }
  95
  96 proc test_base_class {} {
  97   gdb_py_test_silent_cmd "print d" "print value" 1
  98   gdb_py_test_silent_cmd "python d = gdb.history (0)" "get value from  history" 1
  99   gdb_py_test_silent_cmd "python fields = d.type.fields()" "get value from history" 1
 100   gdb_test "python print len(fields)" "3" "Check the number of fields"
 101   gdb_test "python print fields\[0\].is_base_class" "True" "Check base class"
 102   gdb_test "python print fields\[1\].is_base_class" "False" "Check base class"
 103 }
 104
 105 proc test_range {} {
 106
 107   # Test a valid range request.
 108   gdb_py_test_silent_cmd "print ar" "print value" 1
 109   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from history" 1
 110   gdb_test "python print len(ar.type.range())" "2" "Check correct tuple length"
 111   gdb_test "python print ar.type.range()\[0\]" "0" "Check low range"
 112   gdb_test "python print ar.type.range()\[1\]" "1" "Check high range"
 113
 114   # Test a range request on a ranged type.
 115   gdb_py_test_silent_cmd "print ar" "print value" 1
 116   gdb_py_test_silent_cmd "python ar = gdb.history (0)" "get value from  history" 1
 117   gdb_py_test_silent_cmd "python fields = ar.type.fields()" "get fields" 1
 118   gdb_test "python print fields\[0\].type.range()\[0\]" "0" "Check range type low bound"
 119   gdb_test "python print fields\[0\].type.range()\[1\]" "1" "Check range type high bound"
 120
 121   # Test where a range does not exist.
 122   gdb_py_test_silent_cmd "print st" "print value" 1
 123   gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
 124   gdb_test "python print st.type.range()" "RuntimeError: This type does not have a range.*" "Check range for non ranged type."
 125 }
 126
 127
 128 # Perform C Tests.
 129 build_inferior "c"
 130 restart_gdb "break to inspect struct and array."
 131 test_fields "c"
 132
 133 # Perform C++ Tests.
 134 build_inferior "c++"
 135 restart_gdb "break to inspect struct and array."
 136 test_fields "c++"
 137 test_base_class
 138 test_range