Am Do., 12. Juni 2025 um 16:40 Uhr schrieb Tomasz Kamiński <
tkami...@redhat.com>:
> libstdc++-v3/ChangeLog:
>
> * testsuite/std/time/format/whitespace.cc: New test.
> ---
> Testing on x86_64-linux. OK for trunk when test passes.
>
> .../testsuite/std/time/format/whitespace.cc | 54 +++++++++++++++++++
> 1 file changed, 54 insertions(+)
> create mode 100644 libstdc++-v3/testsuite/std/time/format/whitespace.cc
>
> diff --git a/libstdc++-v3/testsuite/std/time/format/whitespace.cc
> b/libstdc++-v3/testsuite/std/time/format/whitespace.cc
> new file mode 100644
> index 00000000000..e211bd51dc1
> --- /dev/null
> +++ b/libstdc++-v3/testsuite/std/time/format/whitespace.cc
> @@ -0,0 +1,54 @@
> +// { dg-do run { target c++20 } }
> +
> +#include <chrono>
> +#include <testsuite_hooks.h>
> +
> +using namespace std::chrono;
> +
> +#define WIDEN_(C, S) ::std::__format::_Widen<C>(S, L##S)
> +#define WIDEN(S) WIDEN_(_CharT, S)
>
>
I don't think that you really need to use the uglified _CharT here...
> +template<typename _CharT, typename ChronoType>
>
.. and here. It is only needed within the standard library headers, right?
> +void
> +test(const ChronoType& ct)
> +{
> + std::basic_string<_CharT> res;
> +
> + res = std::format(WIDEN("{:%% %t %n more text}"), ct);
> + VERIFY( res == WIDEN("% \t \n more text") );
> +
> + res = std::format(WIDEN("{:7%% %t %n}"), ct);
> + VERIFY( res == WIDEN("% \t \n ") );
> +
> + res = std::format(WIDEN("{:>6%% %t %n}"), ct);
> + VERIFY( res == WIDEN(" % \t \n") );
> +
> + res = std::format(WIDEN("{:+>7%% %t %n}"), ct);
> + VERIFY( res == WIDEN("++% \t \n") );
> +
> + res = std::format(WIDEN("{:=^7%% %t %n}"), ct);
> + VERIFY( res == WIDEN("=% \t \n=") );
> +}
> +
> +template<typename CharT>
> +void
> +test_all()
> +{
> + test<CharT>(20s);
> + test<CharT>(10d);
> + test<CharT>(Monday);
> + test<CharT>(2020y/January/8);
> + test<CharT>(local_days(2020y/January/8));
> + test<CharT>(sys_days(2020y/January/8) + 13h + 10min + 5s);
> + test<CharT>(sys_info());
> + test<CharT>(local_info());
> +}
> +
> +int main()
> +{
> + test_all<char>();
> +
> +#ifdef _GLIBCXX_USE_WCHAR_T
> + test_all<wchar_t>();
> +#endif // _GLIBCXX_USE_WCHAR_T
> +}
> --
> 2.49.0
>
- Daniel
