44 lines
1.7 KiB
Python
44 lines
1.7 KiB
Python
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"""
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Test default template arguments.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class TestDefaultTemplateArgs(TestBase):
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@no_debug_info_test
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def test(self):
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self.build()
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lldbutil.run_to_source_breakpoint(
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self, "// break here", lldb.SBFileSpec("main.cpp")
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)
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# Declare a template with a template argument that has a default argument.
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self.expect(
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"expr --top-level -- template<typename T = int> struct $X { int v; };"
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)
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# The type we display to the user should omit the argument with the default
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# value.
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result = self.expect_expr("$X<> x; x", result_type="$X<>")
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# The internal name should also always show all arguments (even if they
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# have their default value).
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self.assertEqual(result.GetTypeName(), "$X<int>")
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# Test the template but this time specify a non-default value for the
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# template argument.
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# Both internal type name and the one we display to the user should
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# show the non-default value in the type name.
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result = self.expect_expr("$X<long> x; x", result_type="$X<long>")
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self.assertEqual(result.GetTypeName(), "$X<long>")
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# Test that the formatters are using the internal type names that
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# always include all template arguments.
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self.expect("type summary add '$X<int>' --summary-string 'summary1'")
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self.expect_expr("$X<> x; x", result_summary="summary1")
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self.expect("type summary add '$X<long>' --summary-string 'summary2'")
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self.expect_expr("$X<long> x; x", result_summary="summary2")
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