xref: /llvm-project/lldb/test/API/lang/cpp/template-function/TestTemplateFunctions.py (revision d33fa70dddcb29d5fd85188e119f034e585ccccf) 
1"""
2Test that we can call C++ template fucntions.
3"""
4import lldb
5from lldbsuite.test.decorators import *
6from lldbsuite.test.lldbtest import *
7from lldbsuite.test import lldbutil
8
9
10class TemplateFunctionsTestCase(TestBase):
11    def do_test_template_function(self, add_cast):
12        self.build()
13        lldbutil.run_to_source_breakpoint(
14            self, "// break here", lldb.SBFileSpec("main.cpp", False)
15        )
16
17        if add_cast:
18            self.expect_expr("(int) foo(42)", result_type="int", result_value="42")
19        else:
20            self.expect(
21                "expr b1 <=> b2",
22                error=True,
23                substrs=[
24                    "warning:",
25                    "'<=>' is a single token in C++20; add a space to avoid a change in behavior",
26                ],
27            )
28
29            self.expect_expr("foo(42)", result_type="int", result_value="42")
30
31            # overload with template case
32            self.expect_expr("h(10)", result_type="int", result_value="10")
33
34            # ADL lookup case
35            self.expect_expr("f(A::C{})", result_type="int", result_value="4")
36
37            # ADL lookup but no overload
38            self.expect_expr("g(A::C{})", result_type="int", result_value="4")
39
40            # variadic function cases
41            self.expect_expr("var(1)", result_type="int", result_value="10")
42            self.expect_expr("var(1, 2)", result_type="int", result_value="10")
43
44            # Overloaded templated operator case
45            self.expect_expr("b1 > b2", result_type="bool", result_value="true")
46            self.expect_expr("b1 >> b2", result_type="bool", result_value="true")
47            self.expect_expr("b1 << b2", result_type="bool", result_value="true")
48            self.expect_expr("b1 == b2", result_type="bool", result_value="true")
49
50            # Overloaded operator case
51            self.expect_expr("d1 > d2", result_type="bool", result_value="true")
52            self.expect_expr("d1 >> d2", result_type="bool", result_value="true")
53            self.expect_expr("d1 << d2", result_type="bool", result_value="true")
54            self.expect_expr("d1 == d2", result_type="bool", result_value="true")
55
56    @skipIfWindows
57    def test_template_function_with_cast(self):
58        self.do_test_template_function(True)
59
60    @skipIfWindows
61    @expectedFailureAll(debug_info=["dwarf", "gmodules", "dwo"])
62    def test_template_function_without_cast(self):
63        self.do_test_template_function(False)
64