packages/Python/lldbsuite/test/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 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 TestObjCIvarStripped(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     @skipIf(
  28         debug_info=no_match("dsym"),
  29         bugnumber="This test requires a stripped binary and a dSYM")
  30     @add_test_categories(['pyapi'])
  31     def test_with_python_api(self):
  32         """Test that we can find stripped Objective-C ivars in the runtime"""
  33         self.build()
  34         exe = os.path.join(os.getcwd(), "a.out.stripped")
  35
  36         target = self.dbg.CreateTarget(exe)
  37         self.assertTrue(target, VALID_TARGET)
  38
  39         self.dbg.HandleCommand("add-dsym a.out.dSYM")
  40
  41         breakpoint = target.BreakpointCreateByLocation(
  42             self.main_source, self.stop_line)
  43         self.assertTrue(
  44             breakpoint.IsValid() and breakpoint.GetNumLocations() > 0,
  45             VALID_BREAKPOINT)
  46
  47         process = target.LaunchSimple(
  48             None, None, self.get_process_working_directory())
  49         self.assertTrue(process, "Created a process.")
  50         self.assertTrue(
  51             process.GetState() == lldb.eStateStopped,
  52             "Stopped it too.")
  53
  54         thread_list = lldbutil.get_threads_stopped_at_breakpoint(
  55             process, breakpoint)
  56         self.assertTrue(len(thread_list) == 1)
  57         thread = thread_list[0]
  58
  59         frame = thread.GetFrameAtIndex(0)
  60         self.assertTrue(frame, "frame 0 is valid")
  61
  62         # Test the expression for mc->_foo
  63
  64         error = lldb.SBError()
  65
  66         ivar = frame.EvaluateExpression("(mc->_foo)")
  67         self.assertTrue(ivar, "Got result for mc->_foo")
  68         ivar_value = ivar.GetValueAsSigned(error)
  69         self.assertTrue(error.Success())
  70         self.assertTrue(ivar_value == 3)