44 lines · python
1"""2Test default template arguments.3"""4 5import lldb6from lldbsuite.test.decorators import *7from lldbsuite.test.lldbtest import *8from lldbsuite.test import lldbutil9 10 11class TestDefaultTemplateArgs(TestBase):12 @no_debug_info_test13 def test(self):14 self.build()15 lldbutil.run_to_source_breakpoint(16 self, "// break here", lldb.SBFileSpec("main.cpp")17 )18 19 # Declare a template with a template argument that has a default argument.20 self.expect(21 "expr --top-level -- template<typename T = int> struct $X { int v; };"22 )23 24 # The type we display to the user should omit the argument with the default25 # value.26 result = self.expect_expr("$X<> x; x", result_type="$X<>")27 # The internal name should also always show all arguments (even if they28 # have their default value).29 self.assertEqual(result.GetTypeName(), "$X<int>")30 31 # Test the template but this time specify a non-default value for the32 # template argument.33 # Both internal type name and the one we display to the user should34 # show the non-default value in the type name.35 result = self.expect_expr("$X<long> x; x", result_type="$X<long>")36 self.assertEqual(result.GetTypeName(), "$X<long>")37 38 # Test that the formatters are using the internal type names that39 # always include all template arguments.40 self.expect("type summary add '$X<int>' --summary-string 'summary1'")41 self.expect_expr("$X<> x; x", result_summary="summary1")42 self.expect("type summary add '$X<long>' --summary-string 'summary2'")43 self.expect_expr("$X<long> x; x", result_summary="summary2")44