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

# Copyright (C) 2010 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This file is part of the GDB testsuite.  It tests the mechanism
# exposing values to Python.

if $tracelevel then {
    strace $tracelevel
}

set testfile "py-breakpoint"
set srcfile ${testfile}.c
if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
    return -1
}

# Run a command in GDB, and report a failure if a Python exception is thrown.
# If report_pass is true, report a pass if no exception is thrown.
proc gdb_py_test_silent_cmd {cmd name report_pass} {
    global gdb_prompt

  gdb_test_multiple $cmd $name {
      -re "Traceback.*$gdb_prompt $"  { fail $name }
      -re "$gdb_prompt $"	      { if $report_pass { pass $name } }
  }
}

# Start with a fresh gdb.
clean_restart ${testfile}

# Skip all tests if Python scripting is not enabled.
if { [skip_python_tests] } { continue }

if ![runto_main] then {
    fail "Cannot run to main."
    return 0
}

global hex decimal

# Initially there should be one breakpoint: main.

gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
gdb_test "python print blist\[0\]" "<gdb.Breakpoint object at $hex>" "Check obj exists"
gdb_test "python print blist\[0\].location" "main." "Check breakpoint location"

gdb_breakpoint [gdb_get_line_number "Break at multiply."]
gdb_continue_to_breakpoint "Break at multiply."

# Check that the Python breakpoint code noted the addition of a
# breakpoint "behind the scenes". 
gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
gdb_test "python print len(blist)" "2" "Check for two breakpoints"
gdb_test "python print blist\[0\]" "<gdb.Breakpoint object at $hex>" "Check obj exists"
gdb_test "python print blist\[0\].location" "main." "Check breakpoint location"
gdb_test "python print blist\[1\]" "<gdb.Breakpoint object at $hex>" "Check obj exists"
gdb_test "python print blist\[1\].location" "py-breakpoint\.c:41*" "Check breakpoint location"

# Check hit and ignore counts. 
gdb_test "python print blist\[1\].hit_count" "1" "Check breakpoint hit count"
gdb_py_test_silent_cmd "python blist\[1\].ignore_count = 4" "Set breakpoint hit count" 0
gdb_continue_to_breakpoint "Break at multiply."
gdb_test "python print blist\[1\].hit_count" "6" "Check breakpoint hit count"
gdb_test "print result" "545" "Check expected variable result after 6 iterations"

# Test breakpoint is enabled and disabled correctly..
gdb_breakpoint [gdb_get_line_number "Break at add."]
gdb_continue_to_breakpoint "Break at add."
gdb_test "python print blist\[1\].enabled" "True" "Check breakpoint enabled."
gdb_py_test_silent_cmd  "python blist\[1\].enabled = False" "Set breakpoint disabled." 0
gdb_continue_to_breakpoint "Break at add."
gdb_py_test_silent_cmd  "python blist\[1\].enabled = True" "Set breakpoint enabled." 0
gdb_continue_to_breakpoint "Break at multiply."

# Test other getters and setters.
gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
gdb_test "python print blist\[1\].thread" "None" "Check breakpoint thread"
gdb_test "python print blist\[1\].type == gdb.BP_BREAKPOINT" "True" "Check breakpoint type"
gdb_test "python print blist\[0\].number" "1" "Check breakpoint number"
gdb_test "python print blist\[1\].number" "2" "Check breakpoint number"
gdb_test "python print blist\[2\].number" "3" "Check breakpoint number"

# Start with a fresh gdb.
clean_restart ${testfile}

if ![runto_main] then {
    fail "Cannot run to main."
    return 0
}

# Test conditional setting.
set bp_location1 [gdb_get_line_number "Break at multiply."]
gdb_py_test_silent_cmd  "python bp1 = gdb.Breakpoint (\"$bp_location1\")" "Set breakpoint" 0
gdb_continue_to_breakpoint "Break at multiply."
gdb_py_test_silent_cmd  "python bp1.condition = \"i == 5\"" "Set breakpoint" 0
gdb_test "python print bp1.condition" "i == 5" "Test conditional has been set"
gdb_continue_to_breakpoint "Break at multiply."
gdb_test "print i" "5" "Test conditional breakpoint stopped after five iterations"
gdb_py_test_silent_cmd  "python bp1.condition = None"  "Clear condition" 0
gdb_test "python print bp1.condition" "None" "Test conditional read"
gdb_continue_to_breakpoint "Break at multiply."
gdb_test "print i" "6" "Test breakpoint stopped after six iterations"

# Test commands.
gdb_breakpoint [gdb_get_line_number "Break at add."]
set test {commands $bpnum}
gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
set test {print "Command for breakpoint has been executed."}
gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
set test {print result}
gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
gdb_test "end"

gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" "Get Breakpoint List" 0
gdb_test "python print blist\[len(blist)-1\].commands" "print \"Command for breakpoint has been executed.\".*print result"

# Watchpoints
# Start with a fresh gdb.
clean_restart ${testfile}

# Disable hardware watchpoints if necessary.
if [target_info exists gdb,no_hardware_watchpoints] {
    gdb_test_no_output "set can-use-hw-watchpoints 0" ""
}

if ![runto_main] then {
    fail "Cannot run to main."
    return 0
}

gdb_py_test_silent_cmd  "python wp1 = gdb.Breakpoint (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE )" "Set watchpoint" 0
gdb_test "continue" ".*\[Ww\]atchpoint.*result.*Old value = 0.*New value = 25.*main.*" "Test watchpoint write"