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

   1 # Copyright (C) 2010-2013 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 ${testfile}.exp ${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     fail "Cannot run to main."
  32     return 0
  33 }
  34
  35 global hex decimal
  36
  37 # Initially there should be one breakpoint: main.
  38
  39 gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
  40 gdb_test "python print (blist\[0\])" "<gdb.Breakpoint object at $hex>" "Check obj exists"
  41 gdb_test "python print (blist\[0\].location)" "main." "Check breakpoint location"
  42
  43 set mult_line [gdb_get_line_number "Break at multiply."]
  44 gdb_breakpoint ${mult_line}
  45 gdb_continue_to_breakpoint "Break at multiply."
  46
  47 # Check that the Python breakpoint code noted the addition of a
  48 # breakpoint "behind the scenes".
  49 gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
  50 gdb_test "python print (len(blist))" "2" "Check for two breakpoints"
  51 gdb_test "python print (blist\[0\])" "<gdb.Breakpoint object at $hex>" "Check obj exists"
  52 gdb_test "python print (blist\[0\].location)" "main." "Check breakpoint location"
  53 gdb_test "python print (blist\[1\])" "<gdb.Breakpoint object at $hex>" "Check obj exists"
  54
  55 gdb_test "python print (blist\[1\].location)" "py-breakpoint\.c:${mult_line}*" \
  56          "Check breakpoint location"
  57
  58 # Check hit and ignore counts.
  59 gdb_test "python print (blist\[1\].hit_count)" "1" "Check breakpoint hit count"
  60 gdb_py_test_silent_cmd "python blist\[1\].ignore_count = 4" "Set breakpoint hit count" 0
  61 gdb_continue_to_breakpoint "Break at multiply."
  62 gdb_test "python print (blist\[1\].hit_count)" "6" "Check breakpoint hit count"
  63 gdb_test "print result" " = 545" "Check expected variable result after 6 iterations"
  64
  65 # Test breakpoint is enabled and disabled correctly..
  66 gdb_breakpoint [gdb_get_line_number "Break at add."]
  67 gdb_continue_to_breakpoint "Break at add."
  68 gdb_test "python print (blist\[1\].enabled)" "True" "Check breakpoint enabled."
  69 gdb_py_test_silent_cmd  "python blist\[1\].enabled = False" "Set breakpoint disabled." 0
  70 gdb_continue_to_breakpoint "Break at add."
  71 gdb_py_test_silent_cmd  "python blist\[1\].enabled = True" "Set breakpoint enabled." 0
  72 gdb_continue_to_breakpoint "Break at multiply."
  73
  74 # Test other getters and setters.
  75 gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
  76 gdb_test "python print (blist\[1\].thread)" "None" "Check breakpoint thread"
  77 gdb_test "python print (blist\[1\].type == gdb.BP_BREAKPOINT)" "True" "Check breakpoint type"
  78 gdb_test "python print (blist\[0\].number)" "1" "Check breakpoint number"
  79 gdb_test "python print (blist\[1\].number)" "2" "Check breakpoint number"
  80 gdb_test "python print (blist\[2\].number)" "3" "Check breakpoint number"
  81
  82 # Start with a fresh gdb.
  83 clean_restart ${testfile}
  84
  85 if ![runto_main] then {
  86     fail "Cannot run to main."
  87     return 0
  88 }
  89
  90 # Test breakpoints are deleted correctly.
  91 set deltst_location [gdb_get_line_number "Break at multiply."]
  92 set end_location [gdb_get_line_number "Break at end."]
  93 gdb_py_test_silent_cmd  "python dp1 = gdb.Breakpoint (\"$deltst_location\")" "Set breakpoint" 0
  94 gdb_breakpoint [gdb_get_line_number "Break at end."]
  95 gdb_py_test_silent_cmd "python del_list = gdb.breakpoints()" "Get Breakpoint List" 0
  96 gdb_test "python print (len(del_list))" "3" "Number of breakpoints before delete"
  97 gdb_continue_to_breakpoint "Break at multiply." ".*/$srcfile:$deltst_location.*"
  98 gdb_py_test_silent_cmd  "python dp1.delete()" "Delete Breakpoint" 0
  99 gdb_test "python print (dp1.number)" "RuntimeError: Breakpoint 2 is invalid.*" "Check breakpoint invalidated"
 100 gdb_py_test_silent_cmd "python del_list = gdb.breakpoints()" "Get Breakpoint List" 0
 101 gdb_test "python print (len(del_list))" "2" "Number of breakpoints after delete"
 102 gdb_continue_to_breakpoint "Break at end." ".*/$srcfile:$end_location.*"
 103
 104
 105 # Start with a fresh gdb.
 106 clean_restart ${testfile}
 107
 108 if ![runto_main] then {
 109     fail "Cannot run to main."
 110     return 0
 111 }
 112
 113 # Test conditional setting.
 114 set bp_location1 [gdb_get_line_number "Break at multiply."]
 115 gdb_py_test_silent_cmd  "python bp1 = gdb.Breakpoint (\"$bp_location1\")" "Set breakpoint" 0
 116 gdb_continue_to_breakpoint "Break at multiply."
 117 gdb_py_test_silent_cmd  "python bp1.condition = \"i == 5\"" "Set breakpoint" 0
 118 gdb_test "python print (bp1.condition)" "i == 5" "Test conditional has been set"
 119 gdb_continue_to_breakpoint "Break at multiply."
 120 gdb_test "print i" "5" "Test conditional breakpoint stopped after five iterations"
 121 gdb_py_test_silent_cmd  "python bp1.condition = None"  "Clear condition" 0
 122 gdb_test "python print (bp1.condition)" "None" "Test conditional read"
 123 gdb_continue_to_breakpoint "Break at multiply."
 124 gdb_test "print i" "6" "Test breakpoint stopped after six iterations"
 125
 126 # Test commands.
 127 gdb_breakpoint [gdb_get_line_number "Break at add."]
 128 set test {commands $bpnum}
 129 gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
 130 set test {print "Command for breakpoint has been executed."}
 131 gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
 132 set test {print result}
 133 gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
 134 gdb_test "end"
 135
 136 gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
 137 gdb_test "python print (blist\[len(blist)-1\].commands)" "print \"Command for breakpoint has been executed.\".*print result"
 138
 139 # Start with a fresh gdb.
 140 clean_restart ${testfile}
 141
 142 if ![runto_main] then {
 143     fail "Cannot run to main."
 144     return 0
 145 }
 146
 147 # Test invisible breakpoints.
 148 delete_breakpoints
 149 set ibp_location [gdb_get_line_number "Break at multiply."]
 150 gdb_py_test_silent_cmd  "python ibp = gdb.Breakpoint(\"$ibp_location\", internal=False)" "Set invisible breakpoint" 0
 151 gdb_py_test_silent_cmd "python ilist = gdb.breakpoints()" "Get Breakpoint List" 0
 152 gdb_test "python print (ilist\[0\])" "<gdb.Breakpoint object at $hex>" "Check invisible bp obj exists"
 153 gdb_test "python print (ilist\[0\].location)" "py-breakpoint\.c:$ibp_location*" "Check breakpoint location"
 154 gdb_test "python print (ilist\[0\].visible)" "True" "Check breakpoint visibility"
 155 gdb_test "info breakpoints" "py-breakpoint\.c:$ibp_location.*" "Check info breakpoints shows visible breakpoints"
 156 delete_breakpoints
 157 gdb_py_test_silent_cmd  "python ibp = gdb.Breakpoint(\"$ibp_location\", internal=True)" "Set invisible breakpoint" 0
 158 gdb_py_test_silent_cmd "python ilist = gdb.breakpoints()" "Get Breakpoint List" 0
 159 gdb_test "python print (ilist\[0\])" "<gdb.Breakpoint object at $hex>" "Check invisible bp obj exists"
 160 gdb_test "python print (ilist\[0\].location)" "py-breakpoint\.c:$ibp_location*" "Check breakpoint location"
 161 gdb_test "python print (ilist\[0\].visible)" "False" "Check breakpoint visibility"
 162 gdb_test "info breakpoints" "No breakpoints or watchpoints.*" "Check info breakpoints does not show invisible breakpoints"
 163 gdb_test "maint info breakpoints" "py-breakpoint\.c:$ibp_location.*" "Check maint info breakpoints shows invisible breakpoints"
 164
 165
 166 # Watchpoints
 167 # Start with a fresh gdb.
 168 clean_restart ${testfile}
 169
 170 # Disable hardware watchpoints if necessary.
 171 if [target_info exists gdb,no_hardware_watchpoints] {
 172     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
 173 }
 174
 175 if ![runto_main] then {
 176     fail "Cannot run to main."
 177     return 0
 178 }
 179
 180 gdb_py_test_silent_cmd  "python wp1 = gdb.Breakpoint (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE )" "Set watchpoint" 0
 181 gdb_test "continue" ".*\[Ww\]atchpoint.*result.*Old value = 0.*New value = 25.*main.*" "Test watchpoint write"
 182
 183 # Internal breakpoints.
 184
 185 # Start with a fresh gdb.
 186 clean_restart ${testfile}
 187
 188 # Disable hardware watchpoints if necessary.
 189 if [target_info exists gdb,no_hardware_watchpoints] {
 190     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
 191 }
 192 if ![runto_main] then {
 193     fail "Cannot run to main."
 194     return 0
 195 }
 196 delete_breakpoints
 197 gdb_py_test_silent_cmd  "python wp1 = gdb.Breakpoint (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE, internal=True )" "Set watchpoint" 0
 198 gdb_test "info breakpoints" "No breakpoints or watchpoints.*" "Check info breakpoints does not show invisible breakpoints"
 199 gdb_test "maint info breakpoints" ".*watchpoint.*result.*" "Check maint info breakpoints shows invisible breakpoints"
 200 gdb_test "continue" ".*\[Ww\]atchpoint.*result.*Old value = 0.*New value = 25.*" "Test watchpoint write"
 201
 202 # Breakpoints that have an evaluation function.
 203
 204 # Start with a fresh gdb.
 205 clean_restart ${testfile}
 206
 207 # Disable hardware watchpoints if necessary.
 208 if [target_info exists gdb,no_hardware_watchpoints] {
 209     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
 210 }
 211 if ![runto_main] then {
 212     fail "Cannot run to main."
 213     return 0
 214 }
 215 delete_breakpoints
 216
 217 gdb_py_test_multiple "Sub-class a breakpoint" \
 218   "python" "" \
 219   "class bp_eval (gdb.Breakpoint):" "" \
 220   "   inf_i = 0" "" \
 221   "   count = 0" "" \
 222   "   def stop (self):" "" \
 223   "      self.count = self.count + 1" "" \
 224   "      self.inf_i = gdb.parse_and_eval(\"i\")" "" \
 225   "      if self.inf_i == 3:" "" \
 226   "        return True" "" \
 227   "      return False" "" \
 228   "end" ""
 229
 230 gdb_py_test_multiple "Sub-class a second breakpoint" \
 231   "python" "" \
 232   "class bp_also_eval (gdb.Breakpoint):" "" \
 233   "   count = 0" "" \
 234   "   def stop (self):" "" \
 235   "      self.count = self.count + 1" "" \
 236   "      if self.count == 9:" "" \
 237   "        return True" "" \
 238   "      return False" "" \
 239   "end" ""
 240
 241 gdb_py_test_multiple "Sub-class a third breakpoint" \
 242   "python" "" \
 243   "class basic (gdb.Breakpoint):" "" \
 244   "   count = 0" "" \
 245   "end" ""
 246
 247 set bp_location2 [gdb_get_line_number "Break at multiply."]
 248 set end_location [gdb_get_line_number "Break at end."]
 249 gdb_py_test_silent_cmd  "python eval_bp1 = bp_eval(\"$bp_location2\")" "Set breakpoint" 0
 250 gdb_py_test_silent_cmd  "python also_eval_bp1 = bp_also_eval(\"$bp_location2\")" "Set breakpoint" 0
 251 gdb_py_test_silent_cmd  "python never_eval_bp1 = bp_also_eval(\"$end_location\")" "Set breakpoint" 0
 252 gdb_continue_to_breakpoint "Break at multiply." ".*/$srcfile:$bp_location2.*"
 253 gdb_test "print i" "3" "Check inferior value matches python accounting"
 254 gdb_test "python print (eval_bp1.inf_i)" "3" "Check python accounting matches inferior"
 255 gdb_test "python print (also_eval_bp1.count)" "4" \
 256     "Check non firing same-location breakpoint eval function was also called at each stop."
 257 gdb_test "python print (eval_bp1.count)" "4" \
 258     "Check non firing same-location breakpoint eval function was also called at each stop."
 259
 260 delete_breakpoints
 261 set cond_bp [gdb_get_line_number "Break at multiply."]
 262 gdb_py_test_silent_cmd  "python eval_bp1 = bp_eval(\"$cond_bp\")" "Set breakpoint" 0
 263 set test_cond {cond $bpnum}
 264 gdb_test "$test_cond \"foo==3\"" "Cannot set a condition where a Python.*" \
 265     "Check you cannot add a CLI condition to a Python breakpoint that" \
 266     "has defined stop"
 267 gdb_py_test_silent_cmd  "python eval_bp2 = basic(\"$cond_bp\")" "Set breakpoint" 0
 268 gdb_py_test_silent_cmd  "python eval_bp2.condition = \"1==1\"" "Set a condition" 0
 269 gdb_py_test_multiple "Construct an eval function" \
 270   "python" "" \
 271   "def stop_func ():" "" \
 272   "   return True" "" \
 273   "end" ""
 274
 275 gdb_test "python eval_bp2.stop = stop_func"  \
 276     "RuntimeError: Cannot set 'stop' method.*" \
 277     "Assign stop function to a breakpoint that has a condition"
 278
 279 delete_breakpoints
 280 gdb_breakpoint [gdb_get_line_number "Break at multiply."]
 281 gdb_py_test_silent_cmd  "python check_eval = bp_eval(\"$bp_location2\")" "Set breakpoint" 0
 282 gdb_test "python print (check_eval.count)" "0" \
 283     "Test that evaluate function has not been yet executed (ie count = 0)"
 284 gdb_continue_to_breakpoint "Break at multiply." ".*/$srcfile:$bp_location2.*"
 285 gdb_test "python print (check_eval.count)" "1" \
 286     "Test that evaluate function is run when location also has normal bp"
 287
 288 gdb_py_test_multiple "Sub-class a watchpoint" \
 289   "python" "" \
 290   "class wp_eval (gdb.Breakpoint):" "" \
 291   "   def stop (self):" "" \
 292   "      self.result = gdb.parse_and_eval(\"result\")" "" \
 293   "      if self.result == 788:" "" \
 294   "        return True" "" \
 295   "      return False" "" \
 296   "end" ""
 297
 298 delete_breakpoints
 299 gdb_py_test_silent_cmd  "python wp1 = wp_eval (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE)" "Set watchpoint" 0
 300 gdb_test "continue" ".*\[Ww\]atchpoint.*result.*Old value =.*New value = 788.*" "Test watchpoint write"
 301 gdb_test "python print (never_eval_bp1.count)" "0" \
 302     "Check that this unrelated breakpoints eval function was never called."