xref: /llvm-project/lldb/test/API/commands/expression/import-std-module/weak_ptr/TestWeakPtrFromStdModule.py (revision 7f78f99fe5af82361d37adcbd2daa4d04afba13d) 
1"""
2Test basic std::weak_ptr functionality.
3"""
4
5from lldbsuite.test.decorators import *
6from lldbsuite.test.lldbtest import *
7from lldbsuite.test import lldbutil
8
9
10class TestSharedPtr(TestBase):
11    @add_test_categories(["libc++"])
12    @skipIf(compiler=no_match("clang"))
13    def test(self):
14        self.build()
15
16        lldbutil.run_to_source_breakpoint(
17            self, "// Set break point at this line.", lldb.SBFileSpec("main.cpp")
18        )
19
20        self.runCmd("settings set target.import-std-module true")
21
22        self.expect_expr(
23            "w",
24            result_type="std::weak_ptr<int>",
25            result_summary="3 strong=1 weak=2",
26            result_children=[ValueCheck(name="__ptr_")],
27        )
28        self.expect_expr("*w.lock()", result_type="element_type", result_value="3")
29        self.expect_expr("*w.lock() = 5", result_type="element_type", result_value="5")
30        self.expect_expr("*w.lock()", result_type="element_type", result_value="5")
31        self.expect_expr("w.use_count()", result_type="long", result_value="1")
32        self.expect("expr w.reset()")
33        self.expect_expr("w.use_count()", result_type="long", result_value="0")
34