xref: /llvm-project/lldb/test/API/commands/expression/import-std-module/array/TestArrayFromStdModule.py (revision b8338983e6f6ec6ebd48a7fc640b5d859e653b27) 
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
12    mydir = TestBase.compute_mydir(__file__)
13
14    @add_test_categories(["libc++"])
15    @skipIf(compiler=no_match("clang"))
16    def test(self):
17        self.build()
18
19        lldbutil.run_to_source_breakpoint(self,
20                                          "// Set break point at this line.",
21                                          lldb.SBFileSpec("main.cpp"))
22
23        self.runCmd("settings set target.import-std-module true")
24
25
26        # Test inspecting an array of integers.
27        array_type = "std::array<int, 3>"
28        size_type = "std::array::size_type"
29        value_type = array_type + "::value_type"
30
31        iterator = array_type + "::iterator"
32        riterator = array_type + "::reverse_iterator"
33
34        self.expect_expr("a",
35                         result_type=array_type,
36                         result_children=[
37                             ValueCheck(name="__elems_", children=[
38                                 ValueCheck(value="3"),
39                                 ValueCheck(value="1"),
40                                 ValueCheck(value="2"),
41                             ])
42                         ])
43        self.expect_expr("a.size()", result_type=size_type, result_value="3")
44        self.expect_expr("a.front()", result_type=value_type, result_value="3")
45        self.expect_expr("a[1]", result_type=value_type, result_value="1")
46        self.expect_expr("a.back()", result_type=value_type, result_value="2")
47
48        # Both are just pointers to the underlying elements.
49        self.expect_expr("a.begin()", result_type=iterator)
50        self.expect_expr("a.rbegin()", result_type=riterator)
51
52        self.expect_expr("*a.begin()", result_type=value_type, result_value="3")
53        self.expect_expr("*a.rbegin()", result_type="int", result_value="2")
54
55        self.expect_expr("a.at(0)", result_type=value_type, result_value="3")
56
57
58        # Same again with an array that has an element type from debug info.
59        array_type = "std::array<DbgInfo, 1>"
60        size_type = "std::array::size_type"
61        value_type = array_type + "::value_type"
62
63        iterator = array_type + "::iterator"
64        riterator = array_type + "::reverse_iterator"
65        dbg_info_elem_children = [ValueCheck(value="4")]
66        dbg_info_elem = [ValueCheck(children=dbg_info_elem_children)]
67
68        self.expect_expr("b",
69                         result_type=array_type,
70                         result_children=[
71                             ValueCheck(name="__elems_", children=dbg_info_elem)
72                         ])
73        self.expect_expr("b.size()", result_type=size_type, result_value="1")
74        self.expect_expr("b.front()", result_type=value_type, result_children=dbg_info_elem_children)
75        self.expect_expr("b[0]", result_type=value_type, result_children=dbg_info_elem_children)
76        self.expect_expr("b.back()", result_type=value_type, result_children=dbg_info_elem_children)
77
78        # Both are just pointers to the underlying elements.
79        self.expect_expr("b.begin()", result_type=iterator)
80        self.expect_expr("b.rbegin()", result_type=riterator)
81
82        self.expect_expr("*b.begin()", result_type=value_type, result_children=dbg_info_elem_children)
83        self.expect_expr("*b.rbegin()", result_type="DbgInfo", result_children=dbg_info_elem_children)
84
85        self.expect_expr("b.at(0)", result_type=value_type, result_children=dbg_info_elem_children)
86
87