diff options
Diffstat (limited to 'test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp')
-rw-r--r-- | test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp b/test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp new file mode 100644 index 000000000000..042aea601b8d --- /dev/null +++ b/test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp @@ -0,0 +1,47 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 + +// <string_view> + +// constexpr bool starts_with(charT x) const noexcept; + +#include <string_view> +#include <cassert> + +#include "test_macros.h" +#include "constexpr_char_traits.hpp" + +int main() +{ + { + typedef std::string_view SV; + SV sv1 {}; + SV sv2 { "abcde", 5 }; + + ASSERT_NOEXCEPT(sv1.starts_with('e')); + + assert (!sv1.starts_with('a')); + assert (!sv1.starts_with('x')); + assert ( sv2.starts_with('a')); + assert (!sv2.starts_with('x')); + } + +#if TEST_STD_VER > 11 + { + typedef std::basic_string_view<char, constexpr_char_traits<char>> SV; + constexpr SV sv1 {}; + constexpr SV sv2 { "abcde", 5 }; + static_assert (!sv1.starts_with('a'), "" ); + static_assert (!sv1.starts_with('x'), "" ); + static_assert ( sv2.starts_with('a'), "" ); + static_assert (!sv2.starts_with('x'), "" ); + } +#endif +} |