4fc502368a
`string_view` is supported all the way back to C++03 as an extension in `libc++`, and so many of the tests run in all standards modes for all vendors. This is unlikely desired by other standard library vendors using our test suite. So, disable the tests for vendors other than `libc++` in these older standards modes. Differential Revision: https://reviews.llvm.org/D126850
126 lines
4.8 KiB
C++
126 lines
4.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
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// <string_view>
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// constexpr int compare(basic_string_view str) const noexcept;
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#include <string_view>
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#include <cassert>
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#include "test_macros.h"
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#include "constexpr_char_traits.h"
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int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
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template<typename CharT>
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void test1 ( std::basic_string_view<CharT> sv1,
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std::basic_string_view<CharT> sv2, int expected ) {
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assert ( sign( sv1.compare(sv2)) == sign(expected));
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}
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template<typename CharT>
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void test ( const CharT *s1, const CharT *s2, int expected ) {
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typedef std::basic_string_view<CharT> string_view_t;
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string_view_t sv1 ( s1 );
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string_view_t sv2 ( s2 );
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test1(sv1, sv2, expected);
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}
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int main(int, char**) {
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test("", "", 0);
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test("", "abcde", -5);
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test("", "abcdefghij", -10);
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test("", "abcdefghijklmnopqrst", -20);
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test("abcde", "", 5);
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test("abcde", "abcde", 0);
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test("abcde", "abcdefghij", -5);
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test("abcde", "abcdefghijklmnopqrst", -15);
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test("abcdefghij", "", 10);
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test("abcdefghij", "abcde", 5);
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test("abcdefghij", "abcdefghij", 0);
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test("abcdefghij", "abcdefghijklmnopqrst", -10);
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test("abcdefghijklmnopqrst", "", 20);
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test("abcdefghijklmnopqrst", "abcde", 15);
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test("abcdefghijklmnopqrst", "abcdefghij", 10);
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test("abcdefghijklmnopqrst", "abcdefghijklmnopqrst", 0);
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test(L"", L"", 0);
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test(L"", L"abcde", -5);
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test(L"", L"abcdefghij", -10);
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test(L"", L"abcdefghijklmnopqrst", -20);
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test(L"abcde", L"", 5);
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test(L"abcde", L"abcde", 0);
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test(L"abcde", L"abcdefghij", -5);
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test(L"abcde", L"abcdefghijklmnopqrst", -15);
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test(L"abcdefghij", L"", 10);
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test(L"abcdefghij", L"abcde", 5);
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test(L"abcdefghij", L"abcdefghij", 0);
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test(L"abcdefghij", L"abcdefghijklmnopqrst", -10);
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test(L"abcdefghijklmnopqrst", L"", 20);
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test(L"abcdefghijklmnopqrst", L"abcde", 15);
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test(L"abcdefghijklmnopqrst", L"abcdefghij", 10);
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test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0);
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#if TEST_STD_VER >= 11
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test(u"", u"", 0);
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test(u"", u"abcde", -5);
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test(u"", u"abcdefghij", -10);
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test(u"", u"abcdefghijklmnopqrst", -20);
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test(u"abcde", u"", 5);
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test(u"abcde", u"abcde", 0);
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test(u"abcde", u"abcdefghij", -5);
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test(u"abcde", u"abcdefghijklmnopqrst", -15);
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test(u"abcdefghij", u"", 10);
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test(u"abcdefghij", u"abcde", 5);
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test(u"abcdefghij", u"abcdefghij", 0);
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test(u"abcdefghij", u"abcdefghijklmnopqrst", -10);
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test(u"abcdefghijklmnopqrst", u"", 20);
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test(u"abcdefghijklmnopqrst", u"abcde", 15);
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test(u"abcdefghijklmnopqrst", u"abcdefghij", 10);
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test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0);
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test(U"", U"", 0);
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test(U"", U"abcde", -5);
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test(U"", U"abcdefghij", -10);
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test(U"", U"abcdefghijklmnopqrst", -20);
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test(U"abcde", U"", 5);
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test(U"abcde", U"abcde", 0);
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test(U"abcde", U"abcdefghij", -5);
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test(U"abcde", U"abcdefghijklmnopqrst", -15);
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test(U"abcdefghij", U"", 10);
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test(U"abcdefghij", U"abcde", 5);
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test(U"abcdefghij", U"abcdefghij", 0);
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test(U"abcdefghij", U"abcdefghijklmnopqrst", -10);
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test(U"abcdefghijklmnopqrst", U"", 20);
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test(U"abcdefghijklmnopqrst", U"abcde", 15);
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test(U"abcdefghijklmnopqrst", U"abcdefghij", 10);
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test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0);
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#endif
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#if TEST_STD_VER > 11
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{
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typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
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constexpr SV sv1 { "abcde", 5 };
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constexpr SV sv2 { "abcde", 5 };
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constexpr SV sv3 { "edcba0", 6 };
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static_assert ( sv1.compare(sv2) == 0, "" );
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static_assert ( sv2.compare(sv1) == 0, "" );
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static_assert ( sv3.compare(sv2) > 0, "" );
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static_assert ( sv2.compare(sv3) < 0, "" );
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}
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#endif
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return 0;
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}
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