1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <string_view> 10 11 // constexpr int compare(basic_string_view str) const noexcept; 12 13 #include <string_view> 14 #include <cassert> 15 16 #include "test_macros.h" 17 #include "constexpr_char_traits.h" 18 19 int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); } 20 21 template<typename CharT> 22 void test1 ( std::basic_string_view<CharT> sv1, 23 std::basic_string_view<CharT> sv2, int expected ) { 24 assert ( sign( sv1.compare(sv2)) == sign(expected)); 25 } 26 27 28 template<typename CharT> 29 void test ( const CharT *s1, const CharT *s2, int expected ) { 30 typedef std::basic_string_view<CharT> string_view_t; 31 32 string_view_t sv1 ( s1 ); 33 string_view_t sv2 ( s2 ); 34 test1(sv1, sv2, expected); 35 } 36 37 int main(int, char**) { 38 39 test("", "", 0); 40 test("", "abcde", -5); 41 test("", "abcdefghij", -10); 42 test("", "abcdefghijklmnopqrst", -20); 43 test("abcde", "", 5); 44 test("abcde", "abcde", 0); 45 test("abcde", "abcdefghij", -5); 46 test("abcde", "abcdefghijklmnopqrst", -15); 47 test("abcdefghij", "", 10); 48 test("abcdefghij", "abcde", 5); 49 test("abcdefghij", "abcdefghij", 0); 50 test("abcdefghij", "abcdefghijklmnopqrst", -10); 51 test("abcdefghijklmnopqrst", "", 20); 52 test("abcdefghijklmnopqrst", "abcde", 15); 53 test("abcdefghijklmnopqrst", "abcdefghij", 10); 54 test("abcdefghijklmnopqrst", "abcdefghijklmnopqrst", 0); 55 56 test(L"", L"", 0); 57 test(L"", L"abcde", -5); 58 test(L"", L"abcdefghij", -10); 59 test(L"", L"abcdefghijklmnopqrst", -20); 60 test(L"abcde", L"", 5); 61 test(L"abcde", L"abcde", 0); 62 test(L"abcde", L"abcdefghij", -5); 63 test(L"abcde", L"abcdefghijklmnopqrst", -15); 64 test(L"abcdefghij", L"", 10); 65 test(L"abcdefghij", L"abcde", 5); 66 test(L"abcdefghij", L"abcdefghij", 0); 67 test(L"abcdefghij", L"abcdefghijklmnopqrst", -10); 68 test(L"abcdefghijklmnopqrst", L"", 20); 69 test(L"abcdefghijklmnopqrst", L"abcde", 15); 70 test(L"abcdefghijklmnopqrst", L"abcdefghij", 10); 71 test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0); 72 73 #if TEST_STD_VER >= 11 74 test(u"", u"", 0); 75 test(u"", u"abcde", -5); 76 test(u"", u"abcdefghij", -10); 77 test(u"", u"abcdefghijklmnopqrst", -20); 78 test(u"abcde", u"", 5); 79 test(u"abcde", u"abcde", 0); 80 test(u"abcde", u"abcdefghij", -5); 81 test(u"abcde", u"abcdefghijklmnopqrst", -15); 82 test(u"abcdefghij", u"", 10); 83 test(u"abcdefghij", u"abcde", 5); 84 test(u"abcdefghij", u"abcdefghij", 0); 85 test(u"abcdefghij", u"abcdefghijklmnopqrst", -10); 86 test(u"abcdefghijklmnopqrst", u"", 20); 87 test(u"abcdefghijklmnopqrst", u"abcde", 15); 88 test(u"abcdefghijklmnopqrst", u"abcdefghij", 10); 89 test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0); 90 91 test(U"", U"", 0); 92 test(U"", U"abcde", -5); 93 test(U"", U"abcdefghij", -10); 94 test(U"", U"abcdefghijklmnopqrst", -20); 95 test(U"abcde", U"", 5); 96 test(U"abcde", U"abcde", 0); 97 test(U"abcde", U"abcdefghij", -5); 98 test(U"abcde", U"abcdefghijklmnopqrst", -15); 99 test(U"abcdefghij", U"", 10); 100 test(U"abcdefghij", U"abcde", 5); 101 test(U"abcdefghij", U"abcdefghij", 0); 102 test(U"abcdefghij", U"abcdefghijklmnopqrst", -10); 103 test(U"abcdefghijklmnopqrst", U"", 20); 104 test(U"abcdefghijklmnopqrst", U"abcde", 15); 105 test(U"abcdefghijklmnopqrst", U"abcdefghij", 10); 106 test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0); 107 #endif 108 109 #if TEST_STD_VER > 11 110 { 111 typedef std::basic_string_view<char, constexpr_char_traits<char>> SV; 112 constexpr SV sv1 { "abcde", 5 }; 113 constexpr SV sv2 { "abcde", 5 }; 114 constexpr SV sv3 { "edcba0", 6 }; 115 static_assert ( sv1.compare(sv2) == 0, "" ); 116 static_assert ( sv2.compare(sv1) == 0, "" ); 117 static_assert ( sv3.compare(sv2) > 0, "" ); 118 static_assert ( sv2.compare(sv3) < 0, "" ); 119 } 120 #endif 121 122 return 0; 123 } 124