TestObjCIvarOffsets.py
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"""Test printing ObjC objects that use unbacked properties - so that the static ivar offsets are incorrect."""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TestObjCIvarOffsets(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line numbers to break inside main().
self.main_source = "main.m"
self.stop_line = line_number(
self.main_source, '// Set breakpoint here.')
@skipUnlessDarwin
@add_test_categories(['pyapi'])
def test_with_python_api(self):
"""Test printing ObjC objects that use unbacked properties"""
self.build()
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation(
self.main_source, self.stop_line)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, "Created a process.")
self.assertTrue(
process.GetState() == lldb.eStateStopped,
"Stopped it too.")
thread_list = lldbutil.get_threads_stopped_at_breakpoint(
process, breakpoint)
self.assertEquals(len(thread_list), 1)
thread = thread_list[0]
frame = thread.GetFrameAtIndex(0)
self.assertTrue(frame, "frame 0 is valid")
mine = thread.GetFrameAtIndex(0).FindVariable("mine")
self.assertTrue(mine, "Found local variable mine.")
# Test the value object value for BaseClass->_backed_int
error = lldb.SBError()
mine_backed_int = mine.GetChildMemberWithName("_backed_int")
self.assertTrue(
mine_backed_int,
"Found mine->backed_int local variable.")
backed_value = mine_backed_int.GetValueAsSigned(error)
self.assertTrue(error.Success())
self.assertEquals(backed_value, 1111)
# Test the value object value for DerivedClass->_derived_backed_int
mine_derived_backed_int = mine.GetChildMemberWithName(
"_derived_backed_int")
self.assertTrue(mine_derived_backed_int,
"Found mine->derived_backed_int local variable.")
derived_backed_value = mine_derived_backed_int.GetValueAsSigned(error)
self.assertTrue(error.Success())
self.assertEquals(derived_backed_value, 3333)
# Make sure we also get bit-field offsets correct:
mine_flag2 = mine.GetChildMemberWithName("flag2")
self.assertTrue(mine_flag2, "Found mine->flag2 local variable.")
flag2_value = mine_flag2.GetValueAsUnsigned(error)
self.assertTrue(error.Success())
self.assertEquals(flag2_value, 7)