Add tests to make sure that <string_view> provides std::size/data/empty in C++17 mode. This is LWG#3009, coming up for a vote in JAX - but we already do it, just don't have tests

llvm-svn: 323719

1 files changed, 5 insertions, 0 deletions

diff --git a/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp b/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp
index bb733c4fb13..b21ba0422fd 100644
--- a/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp
+++ b/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp
@@ -55,6 +55,11 @@ void test2 ( const CharT *s, size_t len ) {
     assert ( sv1.empty() == (len == 0));
     assert ( sv1.size() == sv1.length());
     assert ( sv1.max_size() > sv1.size());
+#if TEST_STD_VER > 14
+//  make sure we pick up std::size, too!
+    assert ( sv1.size() == std::size(sv1));
+    assert ( sv1.empty() == std::empty(sv1));
+#endif
     }
 }