[commmitted] libsdc++: Test using range_format::map as format_kind.

[Tomasz Kamiński]

This adderess TODO from the test file.

libstdc++-v3/ChangeLog:

        * testsuite/std/format/ranges/format_kind.cc: New test.

Signed-off-by: Tomasz Kamiński <tkami...@redhat.com>
---
Tested on x86_64-linux. Pushed to trunk.

 libstdc++-v3/testsuite/std/format/ranges/format_kind.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libstdc++-v3/testsuite/std/format/ranges/format_kind.cc 
b/libstdc++-v3/testsuite/std/format/ranges/format_kind.cc
index 14b9ff20c21..1450fbaebc5 100644
--- a/libstdc++-v3/testsuite/std/format/ranges/format_kind.cc
+++ b/libstdc++-v3/testsuite/std/format/ranges/format_kind.cc
@@ -75,7 +75,9 @@ void test_override()
   CustFormat<int, std::range_format::set> setf{1, 2, 3};
   VERIFY( std::format("{}", setf) == "{1, 2, 3}" );
 
-  // TODO test map once formatter for pair is implenented
+  CustFormat<std::pair<int, int>, std::range_format::map> mapf
+  {{1, 11}, {2, 22}, {3, 33}};
+  VERIFY( std::format("{}", mapf) == "{1: 11, 2: 22, 3: 33}" );
 
   CustFormat<char, std::range_format::string> stringf{'a', 'b', 'c', 'd'};
   VERIFY( std::format("{}", stringf) == "abcd" );
-- 
2.49.0