packages/Python/lldbsuite/test/lang/objc/objc-ivar-offsets/TestObjCIvarOffsets.py

   1 """Test printing ObjC objects that use unbacked properties - so that the static ivar offsets are incorrect."""
   2
   3 from __future__ import print_function
   4
   5
   6 import os
   7 import time
   8 import lldb
   9 from lldbsuite.test.decorators import *
  10 from lldbsuite.test.lldbtest import *
  11 from lldbsuite.test import lldbutil
  12
  13
  14 class TestObjCIvarOffsets(TestBase):
  15
  16     mydir = TestBase.compute_mydir(__file__)
  17
  18     def setUp(self):
  19         # Call super's setUp().
  20         TestBase.setUp(self)
  21         # Find the line numbers to break inside main().
  22         self.main_source = "main.m"
  23         self.stop_line = line_number(
  24             self.main_source, '// Set breakpoint here.')
  25
  26     @skipUnlessDarwin
  27     @add_test_categories(['pyapi'])
  28     def test_with_python_api(self):
  29         """Test printing ObjC objects that use unbacked properties"""
  30         self.build()
  31         exe = os.path.join(os.getcwd(), "a.out")
  32
  33         target = self.dbg.CreateTarget(exe)
  34         self.assertTrue(target, VALID_TARGET)
  35
  36         breakpoint = target.BreakpointCreateByLocation(
  37             self.main_source, self.stop_line)
  38         self.assertTrue(breakpoint, VALID_BREAKPOINT)
  39
  40         process = target.LaunchSimple(
  41             None, None, self.get_process_working_directory())
  42         self.assertTrue(process, "Created a process.")
  43         self.assertTrue(
  44             process.GetState() == lldb.eStateStopped,
  45             "Stopped it too.")
  46
  47         thread_list = lldbutil.get_threads_stopped_at_breakpoint(
  48             process, breakpoint)
  49         self.assertTrue(len(thread_list) == 1)
  50         thread = thread_list[0]
  51
  52         frame = thread.GetFrameAtIndex(0)
  53         self.assertTrue(frame, "frame 0 is valid")
  54
  55         mine = thread.GetFrameAtIndex(0).FindVariable("mine")
  56         self.assertTrue(mine, "Found local variable mine.")
  57
  58         # Test the value object value for BaseClass->_backed_int
  59
  60         error = lldb.SBError()
  61
  62         mine_backed_int = mine.GetChildMemberWithName("_backed_int")
  63         self.assertTrue(
  64             mine_backed_int,
  65             "Found mine->backed_int local variable.")
  66         backed_value = mine_backed_int.GetValueAsSigned(error)
  67         self.assertTrue(error.Success())
  68         self.assertTrue(backed_value == 1111)
  69
  70         # Test the value object value for DerivedClass->_derived_backed_int
  71
  72         mine_derived_backed_int = mine.GetChildMemberWithName(
  73             "_derived_backed_int")
  74         self.assertTrue(mine_derived_backed_int,
  75                         "Found mine->derived_backed_int local variable.")
  76         derived_backed_value = mine_derived_backed_int.GetValueAsSigned(error)
  77         self.assertTrue(error.Success())
  78         self.assertTrue(derived_backed_value == 3333)
  79
  80         # Make sure we also get bit-field offsets correct:
  81
  82         mine_flag2 = mine.GetChildMemberWithName("flag2")
  83         self.assertTrue(mine_flag2, "Found mine->flag2 local variable.")
  84         flag2_value = mine_flag2.GetValueAsUnsigned(error)
  85         self.assertTrue(error.Success())
  86         self.assertTrue(flag2_value == 7)