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module/jni/libcxx/test/std/strings/string.view/string.view.cons/default.pass.cpp

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+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr basic_string_view () noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename T>
+void test () {
+#if TEST_STD_VER > 11
+    {
+    ASSERT_NOEXCEPT(T());
+
+    constexpr T sv1;
+    static_assert ( sv1.size() == 0, "" );
+    static_assert ( sv1.empty(), "");
+    }
+#endif
+
+    {
+    T sv1;
+    assert ( sv1.size() == 0 );
+    assert ( sv1.empty());
+    }
+}
+
+int main(int, char**) {
+    test<std::string_view> ();
+    test<std::u16string_view> ();
+#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
+    test<std::u8string_view> ();
+#endif
+    test<std::u32string_view> ();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view> ();
+#endif
+
+  return 0;
+}