forked from OSchip/llvm-project
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string_view>
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// [string.view.capacity], capacity
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// constexpr size_type size() const noexcept;
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// constexpr size_type length() const noexcept;
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// constexpr size_type max_size() const noexcept;
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// constexpr bool empty() const noexcept;
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#include <experimental/string_view>
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#include <cassert>
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#include "test_macros.h"
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template<typename SV>
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void test1 () {
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#if _LIBCPP_STD_VER > 11
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{
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constexpr SV sv1;
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static_assert ( sv1.size() == 0, "" );
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static_assert ( sv1.empty(), "");
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static_assert ( sv1.size() == sv1.length(), "" );
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static_assert ( sv1.max_size() > sv1.size(), "");
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}
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#endif
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{
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SV sv1;
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assert ( sv1.size() == 0 );
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assert ( sv1.empty());
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assert ( sv1.size() == sv1.length());
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assert ( sv1.max_size() > sv1.size());
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}
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}
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template<typename CharT>
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void test2 ( const CharT *s, size_t len ) {
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{
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std::experimental::basic_string_view<CharT> sv1 ( s );
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assert ( sv1.size() == len );
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assert ( sv1.data() == s );
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assert ( sv1.empty() == (len == 0));
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assert ( sv1.size() == sv1.length());
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assert ( sv1.max_size() > sv1.size());
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}
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}
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int main () {
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typedef std::experimental::string_view string_view;
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typedef std::experimental::u16string_view u16string_view;
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typedef std::experimental::u32string_view u32string_view;
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typedef std::experimental::wstring_view wstring_view;
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test1<string_view> ();
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test1<u16string_view> ();
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test1<u32string_view> ();
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test1<wstring_view> ();
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test2 ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
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test2 ( "ABCDE", 5 );
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test2 ( "a", 1 );
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test2 ( "", 0 );
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test2 ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
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test2 ( L"ABCDE", 5 );
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test2 ( L"a", 1 );
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test2 ( L"", 0 );
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#if TEST_STD_VER >= 11
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test2 ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
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test2 ( u"ABCDE", 5 );
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test2 ( u"a", 1 );
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test2 ( u"", 0 );
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test2 ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
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test2 ( U"ABCDE", 5 );
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test2 ( U"a", 1 );
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test2 ( U"", 0 );
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#endif
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}
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