Copy string_view tests from libstdc++

[thirdparty/binutils-gdb.git] / gdb / unittests / basic_string_view / operations / string_conversion / 1.cc

diff --git a/gdb/unittests/basic_string_view/operations/string_conversion/1.cc b/gdb/unittests/basic_string_view/operations/string_conversion/1.cc
new file mode 100644 (file)
index 0000000..c6bfa0b
--- /dev/null
+++ b/gdb/unittests/basic_string_view/operations/string_conversion/1.cc
@@ -0,0 +1,51 @@
+// { dg-options "-std=gnu++17" }
+
+// Copyright (C) 2014-2018 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// basic_string_view::to_string
+
+#include <string_view>
+#include <string>
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <testsuite_allocator.h>
+
+void
+test01()
+{
+  const char str_lit[] = "123456789A";
+  const std::string_view sv(str_lit);
+  char buffer[4] = { 0 };
+
+  std::string s1{sv};
+  VERIFY( s1 == str_lit );
+  using test_alloc = __gnu_test::tracker_allocator<char>;
+  std::basic_string<char, std::char_traits<char>, test_alloc>
+    s2{sv, test_alloc{}};
+  static_assert( std::is_same<decltype(s2)::allocator_type, test_alloc>::value,
+                 "to_string() uses custom allocator" );
+  VERIFY( std::equal(s1.begin(), s1.end(), s2.begin(), s2.end()) );
+  auto s3 = static_cast<std::string>(sv);
+  VERIFY( s3 == s1 );
+}
+
+int
+main()
+{
+  test01();
+}