xref: /llvm-project/lldb/test/API/commands/expression/context-object-objc/TestContextObjectObjc.py (revision 2238dcc39358353cac21df75c3c3286ab20b8f53) 
1"""
2Tests expression evaluation in context of an objc class.
3"""
4
5import lldb
6import lldbsuite.test.lldbutil as lldbutil
7from lldbsuite.test.decorators import *
8from lldbsuite.test.lldbtest import *
9
10
11class ContextObjectObjcTestCase(TestBase):
12    @add_test_categories(["objc"])
13    def test_context_object_objc(self):
14        """Tests expression evaluation in context of an objc class."""
15        self.build()
16
17        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
18            self, "// Break here", self.main_source_spec
19        )
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.assertSuccess(value.GetError())
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.assertSuccess(value.GetError())
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.assertSuccess(value.GetError())
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.assertSuccess(value.GetError())
67
68        # Test retrieving of a field on it
69        value = obj_val.EvaluateExpression("field")
70        self.assertTrue(value.IsValid())
71        self.assertSuccess(value.GetError())
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)
79