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   1 """
   2 Tests expression evaluation in context of an objc class.
   3 """
   4
   5 import lldb
   6 import lldbsuite.test.lldbutil as lldbutil
   7 from lldbsuite.test.decorators import *
   8 from lldbsuite.test.lldbtest import *
   9
  10 class ContextObjectObjcTestCase(TestBase):
  11
  12     mydir = TestBase.compute_mydir(__file__)
  13
  14     @skipUnlessDarwin
  15     def test_context_object_objc(self):
  16         """Tests expression evaluation in context of an objc class."""
  17         self.build()
  18
  19         (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self, '// Break here', self.main_source_spec)
  20         frame = thread.GetFrameAtIndex(0)
  21
  22         #
  23         # Test objc class variable
  24         #
  25
  26         obj_val = frame.FindVariable("objcClass")
  27         self.assertTrue(obj_val.IsValid())
  28         obj_val = obj_val.Dereference()
  29         self.assertTrue(obj_val.IsValid())
  30
  31         # Test an empty expression evaluation
  32         value = obj_val.EvaluateExpression("")
  33         self.assertFalse(value.IsValid())
  34         self.assertFalse(value.GetError().Success())
  35
  36         # Test retrieving of a field (not a local with the same name)
  37         value = obj_val.EvaluateExpression("field")
  38         self.assertTrue(value.IsValid())
  39         self.assertTrue(value.GetError().Success())
  40         self.assertEqual(value.GetValueAsSigned(), 1111)
  41
  42         # Test if the self pointer is properly evaluated
  43
  44         # Test retrieving of an objcClass's property through the self pointer
  45         value = obj_val.EvaluateExpression("self.property")
  46         self.assertTrue(value.IsValid())
  47         self.assertTrue(value.GetError().Success())
  48         self.assertEqual(value.GetValueAsSigned(), 2222)
  49
  50         # Test objcClass's methods evaluation through the self pointer
  51         value = obj_val.EvaluateExpression("[self method]")
  52         self.assertTrue(value.IsValid())
  53         self.assertTrue(value.GetError().Success())
  54         self.assertEqual(value.GetValueAsSigned(), 3333)
  55
  56         # Test if we can use a computation result reference object correctly
  57
  58         obj_val = frame.EvaluateExpression("[ObjcClass createNew]")
  59         self.assertTrue(obj_val.IsValid())
  60         obj_val = obj_val.Dereference()
  61         self.assertTrue(obj_val.IsValid())
  62
  63         # Test an expression evaluation on it
  64         value = obj_val.EvaluateExpression("1")
  65         self.assertTrue(value.IsValid())
  66         self.assertTrue(value.GetError().Success())
  67
  68         # Test retrieving of a field on it
  69         value = obj_val.EvaluateExpression("field")
  70         self.assertTrue(value.IsValid())
  71         self.assertTrue(value.GetError().Success())
  72         self.assertEqual(value.GetValueAsSigned(), 1111)
  73
  74     def setUp(self):
  75         TestBase.setUp(self)
  76
  77         self.main_source = "main.m"
  78         self.main_source_spec = lldb.SBFileSpec(self.main_source)