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"""
Test 'watchpoint command'.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class WatchpointPythonCommandTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Our simple source filename.
self.source = 'main.cpp'
# Find the line number to break inside main().
self.line = line_number(self.source, '// Set break point at this line.')
# And the watchpoint variable declaration line number.
self.decl = line_number(self.source, '// Watchpoint variable declaration.')
# Build dictionary to have unique executable names for each test method.
self.exe_name = self.testMethodName
self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
@skipIfFreeBSD # timing out on buildbot
@expectedFailureWindows("llvm.org/pr24446") # WINDOWS XFAIL TRIAGE - Watchpoints not supported on Windows
@expectedFailureAndroid(archs=['arm', 'aarch64']) # Watchpoints not supported
def test_watchpoint_command(self):
"""Test 'watchpoint command'."""
self.build(dictionary=self.d)
self.setTearDownCleanup(dictionary=self.d)
exe = os.path.join(os.getcwd(), self.exe_name)
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add a breakpoint to set a watchpoint when stopped on the breakpoint.
lldbutil.run_break_set_by_file_and_line (self, None, self.line, num_expected_locations=1)
# self.expect("breakpoint set -l %d" % self.line, BREAKPOINT_CREATED,
# startstr = "Breakpoint created: 1: file ='%s', line = %d, locations = 1" %
# (self.source, self.line))#
# Run the program.
self.runCmd("run", RUN_SUCCEEDED)
# We should be stopped again due to the breakpoint.
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# Now let's set a write-type watchpoint for 'global'.
self.expect("watchpoint set variable -w write global", WATCHPOINT_CREATED,
substrs = ['Watchpoint created', 'size = 4', 'type = w',
'%s:%d' % (self.source, self.decl)])
self.runCmd('watchpoint command add -s python 1 -o \'frame.EvaluateExpression("cookie = 777")\'')
# List the watchpoint command we just added.
self.expect("watchpoint command list 1",
substrs = ['frame.EvaluateExpression', 'cookie = 777'])
# Use the '-v' option to do verbose listing of the watchpoint.
# The hit count should be 0 initially.
self.expect("watchpoint list -v",
substrs = ['hit_count = 0'])
self.runCmd("process continue")
# We should be stopped again due to the watchpoint (write type).
# The stop reason of the thread should be watchpoint.
self.expect("thread backtrace", STOPPED_DUE_TO_WATCHPOINT,
substrs = ['stop reason = watchpoint'])
# Check that the watchpoint snapshoting mechanism is working.
self.expect("watchpoint list -v",
substrs = ['old value:', ' = 0',
'new value:', ' = 1'])
# The watchpoint command "forced" our global variable 'cookie' to become 777.
self.expect("frame variable --show-globals cookie",
substrs = ['(int32_t)', 'cookie = 777'])
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