xref: /llvm-project/lldb/test/API/lang/objc/objc-ivar-offsets/TestObjCIvarOffsets.py (revision 80fcecb13c388ff087a27a4b0e7ca3dd8c98eaa4) 
1"""Test printing ObjC objects that use unbacked properties - so that the static ivar offsets are incorrect."""
2
3
4import lldb
5from lldbsuite.test.decorators import *
6from lldbsuite.test.lldbtest import *
7from lldbsuite.test import lldbutil
8
9
10class TestObjCIvarOffsets(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    @add_test_categories(["pyapi"])
19    def test_with_python_api(self):
20        """Test printing ObjC objects that use unbacked properties"""
21        self.build()
22        exe = self.getBuildArtifact("a.out")
23
24        target = self.dbg.CreateTarget(exe)
25        self.assertTrue(target, VALID_TARGET)
26
27        breakpoint = target.BreakpointCreateByLocation(self.main_source, self.stop_line)
28        self.assertTrue(breakpoint, VALID_BREAKPOINT)
29
30        process = target.LaunchSimple(None, None, self.get_process_working_directory())
31        self.assertTrue(process, "Created a process.")
32        self.assertEqual(process.GetState(), lldb.eStateStopped, "Stopped it too.")
33
34        thread_list = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint)
35        self.assertEqual(len(thread_list), 1)
36        thread = thread_list[0]
37
38        frame = thread.GetFrameAtIndex(0)
39        self.assertTrue(frame, "frame 0 is valid")
40
41        mine = thread.GetFrameAtIndex(0).FindVariable("mine")
42        self.assertTrue(mine, "Found local variable mine.")
43
44        # Test the value object value for BaseClass->_backed_int
45
46        error = lldb.SBError()
47
48        mine_backed_int = mine.GetChildMemberWithName("_backed_int")
49        self.assertTrue(mine_backed_int, "Found mine->backed_int local variable.")
50        backed_value = mine_backed_int.GetValueAsSigned(error)
51        self.assertSuccess(error)
52        self.assertEqual(backed_value, 1111)
53
54        # Test the value object value for DerivedClass->_derived_backed_int
55
56        mine_derived_backed_int = mine.GetChildMemberWithName("_derived_backed_int")
57        self.assertTrue(
58            mine_derived_backed_int, "Found mine->derived_backed_int local variable."
59        )
60        derived_backed_value = mine_derived_backed_int.GetValueAsSigned(error)
61        self.assertSuccess(error)
62        self.assertEqual(derived_backed_value, 3333)
63
64        # Make sure we also get bit-field offsets correct:
65
66        mine_flag2 = mine.GetChildMemberWithName("flag2")
67        self.assertTrue(mine_flag2, "Found mine->flag2 local variable.")
68        flag2_value = mine_flag2.GetValueAsUnsigned(error)
69        self.assertSuccess(error)
70        self.assertEqual(flag2_value, 7)
71