164b297099
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@210659 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
// <string_view>
|
|
|
|
// void clear() noexcept
|
|
|
|
#include <experimental/string_view>
|
|
#include <cassert>
|
|
|
|
template<typename CharT>
|
|
void test ( const CharT *s, size_t len ) {
|
|
typedef std::experimental::basic_string_view<CharT> SV;
|
|
{
|
|
SV sv1 ( s );
|
|
assert ( sv1.size() == len );
|
|
assert ( sv1.data() == s );
|
|
|
|
sv1.clear ();
|
|
assert ( sv1.data() == nullptr );
|
|
assert ( sv1.size() == 0 );
|
|
assert ( sv1 == SV());
|
|
}
|
|
}
|
|
|
|
#if _LIBCPP_STD_VER > 11
|
|
constexpr size_t test_ce ( size_t n ) {
|
|
typedef std::experimental::basic_string_view<char> SV;
|
|
SV sv1{ "ABCDEFGHIJKL", n };
|
|
sv1.clear();
|
|
return sv1.size();
|
|
}
|
|
#endif
|
|
|
|
int main () {
|
|
test ( "ABCDE", 5 );
|
|
test ( "a", 1 );
|
|
test ( "", 0 );
|
|
|
|
test ( L"ABCDE", 5 );
|
|
test ( L"a", 1 );
|
|
test ( L"", 0 );
|
|
|
|
#if __cplusplus >= 201103L
|
|
test ( u"ABCDE", 5 );
|
|
test ( u"a", 1 );
|
|
test ( u"", 0 );
|
|
|
|
test ( U"ABCDE", 5 );
|
|
test ( U"a", 1 );
|
|
test ( U"", 0 );
|
|
#endif
|
|
|
|
#if _LIBCPP_STD_VER > 11
|
|
static_assert ( test_ce (5) == 0, "" );
|
|
#endif
|
|
|
|
}
|