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//===----------------------------------------------------------------------===//
//
// 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>
// [string.view.capacity], capacity
// constexpr size_type size() const noexcept;
// constexpr size_type length() const noexcept;
// constexpr size_type max_size() const noexcept;
// constexpr bool empty() const noexcept;
#include <string_view>
#include <cassert>
#include "test_macros.h"
template<typename SV>
void test1 () {
#if TEST_STD_VER > 11
{
constexpr SV sv1;
static_assert ( sv1.size() == 0, "" );
static_assert ( sv1.empty(), "");
static_assert ( sv1.size() == sv1.length(), "" );
static_assert ( sv1.max_size() > sv1.size(), "");
}
#endif
{
SV sv1;
assert ( sv1.size() == 0 );
assert ( sv1.empty());
assert ( sv1.size() == sv1.length());
assert ( sv1.max_size() > sv1.size());
}
}
template<typename CharT>
void test2 ( const CharT *s, size_t len ) {
{
std::basic_string_view<CharT> sv1 ( s );
assert ( sv1.size() == len );
assert ( sv1.data() == s );
assert ( sv1.empty() == (len == 0));
assert ( sv1.size() == sv1.length());
assert ( sv1.max_size() > sv1.size());
}
}
int main () {
typedef std::string_view string_view;
typedef std::u16string_view u16string_view;
typedef std::u32string_view u32string_view;
typedef std::wstring_view wstring_view;
test1<string_view> ();
test1<u16string_view> ();
test1<u32string_view> ();
test1<wstring_view> ();
test2 ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
test2 ( "ABCDE", 5 );
test2 ( "a", 1 );
test2 ( "", 0 );
test2 ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
test2 ( L"ABCDE", 5 );
test2 ( L"a", 1 );
test2 ( L"", 0 );
#if TEST_STD_VER >= 11
test2 ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
test2 ( u"ABCDE", 5 );
test2 ( u"a", 1 );
test2 ( u"", 0 );
test2 ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
test2 ( U"ABCDE", 5 );
test2 ( U"a", 1 );
test2 ( U"", 0 );
#endif
}
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