xref: /llvm-project/lldb/test/API/commands/expression/options/TestExprOptions.py (revision 38f8fcea3455ef1d77faf9746579f52b4e18dacc) 
1"""
2Test expression command options.
3
4Test cases:
5
6o test_expr_options:
7  Test expression command options.
8"""
9
10
11import lldb
12import lldbsuite.test.lldbutil as lldbutil
13from lldbsuite.test.decorators import *
14from lldbsuite.test.lldbtest import *
15
16
17class ExprOptionsTestCase(TestBase):
18    def setUp(self):
19        # Call super's setUp().
20        TestBase.setUp(self)
21
22        self.main_source = "main.cpp"
23        self.main_source_spec = lldb.SBFileSpec(self.main_source)
24        self.line = line_number("main.cpp", "// breakpoint_in_main")
25        self.exe = self.getBuildArtifact("a.out")
26
27    def test_expr_options(self):
28        """These expression command options should work as expected."""
29        self.build()
30
31        # Set debugger into synchronous mode
32        self.dbg.SetAsync(False)
33
34        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
35            self, "// breakpoint_in_main", self.main_source_spec
36        )
37
38        frame = thread.GetFrameAtIndex(0)
39        options = lldb.SBExpressionOptions()
40
41        # test --language on C++ expression using the SB API's
42
43        # Make sure we can evaluate a C++11 expression.
44        val = frame.EvaluateExpression("foo != nullptr")
45        self.assertTrue(val.IsValid())
46        self.assertSuccess(val.GetError())
47        self.DebugSBValue(val)
48
49        # Make sure it still works if language is set to C++11:
50        options.SetLanguage(lldb.eLanguageTypeC_plus_plus_11)
51        val = frame.EvaluateExpression("foo != nullptr", options)
52        self.assertTrue(val.IsValid())
53        self.assertSuccess(val.GetError())
54        self.DebugSBValue(val)
55
56        # Make sure it fails if language is set to C:
57        options.SetLanguage(lldb.eLanguageTypeC)
58        val = frame.EvaluateExpression("foo != nullptr", options)
59        self.assertTrue(val.IsValid())
60        self.assertFalse(val.GetError().Success())
61
62    def test_expr_options_lang(self):
63        """These expression language options should work as expected."""
64        self.build()
65
66        # Set debugger into synchronous mode
67        self.dbg.SetAsync(False)
68
69        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
70            self, "// breakpoint_in_main", self.main_source_spec
71        )
72
73        frame = thread.GetFrameAtIndex(0)
74        options = lldb.SBExpressionOptions()
75
76        # Make sure we can retrieve `id` variable if language is set to C++11:
77        options.SetLanguage(lldb.eLanguageTypeC_plus_plus_11)
78        val = frame.EvaluateExpression("id == 0", options)
79        self.assertTrue(val.IsValid())
80        self.assertSuccess(val.GetError())
81        self.DebugSBValue(val)
82
83        # Make sure we can't retrieve `id` variable if language is set to ObjC:
84        options.SetLanguage(lldb.eLanguageTypeObjC)
85        val = frame.EvaluateExpression("id == 0", options)
86        self.assertTrue(val.IsValid())
87        self.assertFalse(val.GetError().Success())
88