lldb/test/API/lang/cpp/template-function/TestTemplateFunctions.py

   1 """
   2 Test that we can call C++ template fucntions.
   3 """
   4 import lldb
   5 from lldbsuite.test.decorators import *
   6 from lldbsuite.test.lldbtest import *
   7 from lldbsuite.test import lldbutil
   8
   9
  10 class 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: <user expression 0>:1:4: '<=>' is a single token in C++20; add a space to avoid a change in behavior"
  25                 ],
  26             )
  27
  28             self.expect_expr("foo(42)", result_type="int", result_value="42")
  29
  30             # overload with template case
  31             self.expect_expr("h(10)", result_type="int", result_value="10")
  32
  33             # ADL lookup case
  34             self.expect_expr("f(A::C{})", result_type="int", result_value="4")
  35
  36             # ADL lookup but no overload
  37             self.expect_expr("g(A::C{})", result_type="int", result_value="4")
  38
  39             # variadic function cases
  40             self.expect_expr("var(1)", result_type="int", result_value="10")
  41             self.expect_expr("var(1, 2)", result_type="int", result_value="10")
  42
  43             # Overloaded templated operator case
  44             self.expect_expr("b1 > b2", result_type="bool", result_value="true")
  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
  49             # Overloaded operator case
  50             self.expect_expr("d1 > d2", result_type="bool", result_value="true")
  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
  55     @skipIfWindows
  56     def test_template_function_with_cast(self):
  57         self.do_test_template_function(True)
  58
  59     @skipIfWindows
  60     @expectedFailureAll(debug_info=["dwarf", "gmodules", "dwo"])
  61     def test_template_function_without_cast(self):
  62         self.do_test_template_function(False)