lldb/test/API/lang/objc/objc-ivar-stripped/TestObjCIvarStripped.py

   1 """Test printing ObjC objects that use unbacked properties - so that the static ivar offsets are incorrect."""
   2
   3
   4 import lldb
   5 from lldbsuite.test.decorators import *
   6 from lldbsuite.test.lldbtest import *
   7 from lldbsuite.test import lldbutil
   8
   9
  10 class TestObjCIvarStripped(TestBase):
  11     def setUp(self):
  12         # Call super's setUp().
  13         TestBase.setUp(self)
  14         # Find the line numbers to break inside main().
  15         self.main_source = "main.m"
  16         self.stop_line = line_number(self.main_source, "// Set breakpoint here.")
  17
  18     @skipIf(
  19         debug_info=no_match("dsym"),
  20         bugnumber="This test requires a stripped binary and a dSYM",
  21     )
  22     @add_test_categories(["pyapi"])
  23     def test_with_python_api(self):
  24         """Test that we can find stripped Objective-C ivars in the runtime"""
  25         self.build()
  26         exe = self.getBuildArtifact("a.out.stripped")
  27
  28         target = self.dbg.CreateTarget(exe)
  29         self.assertTrue(target, VALID_TARGET)
  30
  31         self.dbg.HandleCommand("add-dsym " + self.getBuildArtifact("a.out.dSYM"))
  32
  33         breakpoint = target.BreakpointCreateByLocation(self.main_source, self.stop_line)
  34         self.assertTrue(
  35             breakpoint.IsValid() and breakpoint.GetNumLocations() > 0, VALID_BREAKPOINT
  36         )
  37
  38         process = target.LaunchSimple(None, None, self.get_process_working_directory())
  39         self.assertTrue(process, "Created a process.")
  40         self.assertEqual(process.GetState(), lldb.eStateStopped, "Stopped it too.")
  41
  42         thread_list = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint)
  43         self.assertEquals(len(thread_list), 1)
  44         thread = thread_list[0]
  45
  46         frame = thread.GetFrameAtIndex(0)
  47         self.assertTrue(frame, "frame 0 is valid")
  48
  49         # Test the expression for mc->_foo
  50
  51         error = lldb.SBError()
  52
  53         ivar = frame.EvaluateExpression("(mc->_foo)")
  54         self.assertTrue(ivar, "Got result for mc->_foo")
  55         ivar_value = ivar.GetValueAsSigned(error)
  56         self.assertSuccess(error)
  57         self.assertEquals(ivar_value, 3)