xref: /llvm-project/lldb/test/API/commands/expression/import-std-module/array/TestArrayFromStdModule.py (revision 87f126243beb69b8b02e5cd4df762bc8a6f1f8cc) 
1"""
2Test basic std::array functionality.
3"""
4
5from lldbsuite.test.decorators import *
6from lldbsuite.test.lldbtest import *
7from lldbsuite.test import lldbutil
8
9
10class TestCase(TestBase):
11    @add_test_categories(["libc++"])
12    @skipIf(compiler=no_match("clang"))
13    @skipIfLinux  # https://discourse.llvm.org/t/lldb-test-failures-on-linux/80095
14    def test(self):
15        self.build()
16
17        lldbutil.run_to_source_breakpoint(
18            self, "// Set break point at this line.", lldb.SBFileSpec("main.cpp")
19        )
20
21        self.runCmd("settings set target.import-std-module true")
22
23        size_type = "size_type"
24        value_type = "value_type"
25        iterator = "iterator"
26        riterator = "reverse_iterator"
27
28        # Test inspecting an array of integers.
29        array_type = "std::array<int, 3>"
30        self.expect_expr(
31            "a",
32            result_type=array_type,
33            result_children=[
34                ValueCheck(
35                    name="__elems_",
36                    children=[
37                        ValueCheck(value="3"),
38                        ValueCheck(value="1"),
39                        ValueCheck(value="2"),
40                    ],
41                )
42            ],
43        )
44        self.expect_expr("a.size()", result_type=size_type, result_value="3")
45        self.expect_expr("a.front()", result_type=value_type, result_value="3")
46        self.expect_expr("a[1]", result_type=value_type, result_value="1")
47        self.expect_expr("a.back()", result_type=value_type, result_value="2")
48
49        # Both are just pointers to the underlying elements.
50        self.expect_expr("a.begin()", result_type=iterator)
51        self.expect_expr("a.rbegin()", result_type=riterator)
52
53        self.expect_expr("*a.begin()", result_type=value_type, result_value="3")
54        self.expect_expr("*a.rbegin()", result_type="int", result_value="2")
55
56        self.expect_expr("a.at(0)", result_type=value_type, result_value="3")
57
58        # Same again with an array that has an element type from debug info.
59        array_type = "std::array<DbgInfo, 1>"
60
61        dbg_info_elem_children = [ValueCheck(value="4")]
62        dbg_info_elem = [ValueCheck(children=dbg_info_elem_children)]
63
64        self.expect_expr(
65            "b",
66            result_type=array_type,
67            result_children=[ValueCheck(name="__elems_", children=dbg_info_elem)],
68        )
69        self.expect_expr("b.size()", result_type=size_type, result_value="1")
70        self.expect_expr(
71            "b.front()", result_type=value_type, result_children=dbg_info_elem_children
72        )
73        self.expect_expr(
74            "b[0]", result_type=value_type, result_children=dbg_info_elem_children
75        )
76        self.expect_expr(
77            "b.back()", result_type=value_type, result_children=dbg_info_elem_children
78        )
79
80        # Both are just pointers to the underlying elements.
81        self.expect_expr("b.begin()", result_type=iterator)
82        self.expect_expr("b.rbegin()", result_type=riterator)
83
84        self.expect_expr(
85            "*b.begin()", result_type=value_type, result_children=dbg_info_elem_children
86        )
87        self.expect_expr(
88            "*b.rbegin()", result_type="DbgInfo", result_children=dbg_info_elem_children
89        )
90
91        self.expect_expr(
92            "b.at(0)", result_type=value_type, result_children=dbg_info_elem_children
93        )
94