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"""
Test stop hook functionality
"""
import lldb
import lldbsuite.test.lldbutil as lldbutil
from lldbsuite.test.lldbtest import *
class TestStopHooks(TestBase):
# If your test case doesn't stress debug info, then
# set this to true. That way it won't be run once for
# each debug info format.
NO_DEBUG_INFO_TESTCASE = True
def setUp(self):
TestBase.setUp(self)
self.build()
self.main_source_file = lldb.SBFileSpec("main.c")
full_path = os.path.join(self.getSourceDir(), "main.c")
self.main_start_line = line_number(full_path, "main()")
def test_stop_hooks_step_out(self):
"""Test that stop hooks fire on step-out."""
self.step_out_test()
def test_stop_hooks_after_expr(self):
"""Test that a stop hook fires when hitting a breakpoint
that runs an expression"""
self.after_expr_test()
def step_out_test(self):
(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
self, "Set a breakpoint here", self.main_source_file
)
interp = self.dbg.GetCommandInterpreter()
result = lldb.SBCommandReturnObject()
interp.HandleCommand("target stop-hook add -o 'expr g_var++'", result)
self.assertTrue(result.Succeeded(), "Set the target stop hook")
thread.StepOut()
var = target.FindFirstGlobalVariable("g_var")
self.assertTrue(var.IsValid())
self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
def after_expr_test(self):
interp = self.dbg.GetCommandInterpreter()
result = lldb.SBCommandReturnObject()
interp.HandleCommand("target stop-hook add -o 'expr g_var++'", result)
self.assertTrue(result.Succeeded(), "Set the target stop hook")
(target, process, thread, first_bkpt) = lldbutil.run_to_source_breakpoint(
self, "Set a breakpoint here", self.main_source_file
)
var = target.FindFirstGlobalVariable("g_var")
self.assertTrue(var.IsValid())
self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
bkpt = target.BreakpointCreateBySourceRegex(
"Continue to here", self.main_source_file
)
self.assertNotEqual(bkpt.GetNumLocations(), 0, "Set the second breakpoint")
commands = lldb.SBStringList()
commands.AppendString("expr increment_gvar()")
bkpt.SetCommandLineCommands(commands)
threads = lldbutil.continue_to_breakpoint(process, bkpt)
self.assertEqual(len(threads), 1, "Hit my breakpoint")
self.assertTrue(var.IsValid())
self.assertEqual(var.GetValueAsUnsigned(), 3, "Updated g_var")
# Make sure running an expression does NOT run the stop hook.
# Our expression will increment it by one, but the stop shouldn't
# have gotten it to 5.
threads[0].frames[0].EvaluateExpression("increment_gvar()")
self.assertTrue(var.IsValid())
self.assertEqual(var.GetValueAsUnsigned(), 4, "Updated g_var")
# Make sure a rerun doesn't upset the state we've set up:
process.Kill()
lldbutil.run_to_breakpoint_do_run(self, target, first_bkpt)
var = target.FindFirstGlobalVariable("g_var")
self.assertTrue(var.IsValid())
self.assertEqual(var.GetValueAsUnsigned(), 1, "Updated g_var")
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