1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <string_view>
11
12 // constexpr int compare(const charT* s) const;
13
14 #include <string_view>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "constexpr_char_traits.hpp"
19
sign(int x)20 int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
21
22 template<typename CharT>
test1(std::basic_string_view<CharT> sv1,const CharT * s,int expected)23 void test1 ( std::basic_string_view<CharT> sv1, const CharT *s, int expected ) {
24 assert ( sign( sv1.compare(s)) == sign(expected));
25 }
26
27 template<typename CharT>
28 void
test(const CharT * s1,const CharT * s2,int expected)29 test( const CharT *s1, const CharT *s2, int expected)
30 {
31 typedef std::basic_string_view<CharT> string_view_t;
32 string_view_t sv1 ( s1 );
33 test1 ( sv1, s2, expected );
34 }
35
main()36 int main()
37 {
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
57 {
58 test(L"", L"", 0);
59 test(L"", L"abcde", -5);
60 test(L"", L"abcdefghij", -10);
61 test(L"", L"abcdefghijklmnopqrst", -20);
62 test(L"abcde", L"", 5);
63 test(L"abcde", L"abcde", 0);
64 test(L"abcde", L"abcdefghij", -5);
65 test(L"abcde", L"abcdefghijklmnopqrst", -15);
66 test(L"abcdefghij", L"", 10);
67 test(L"abcdefghij", L"abcde", 5);
68 test(L"abcdefghij", L"abcdefghij", 0);
69 test(L"abcdefghij", L"abcdefghijklmnopqrst", -10);
70 test(L"abcdefghijklmnopqrst", L"", 20);
71 test(L"abcdefghijklmnopqrst", L"abcde", 15);
72 test(L"abcdefghijklmnopqrst", L"abcdefghij", 10);
73 test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0);
74 }
75
76 #if TEST_STD_VER >= 11
77 {
78 test(U"", U"", 0);
79 test(U"", U"abcde", -5);
80 test(U"", U"abcdefghij", -10);
81 test(U"", U"abcdefghijklmnopqrst", -20);
82 test(U"abcde", U"", 5);
83 test(U"abcde", U"abcde", 0);
84 test(U"abcde", U"abcdefghij", -5);
85 test(U"abcde", U"abcdefghijklmnopqrst", -15);
86 test(U"abcdefghij", U"", 10);
87 test(U"abcdefghij", U"abcde", 5);
88 test(U"abcdefghij", U"abcdefghij", 0);
89 test(U"abcdefghij", U"abcdefghijklmnopqrst", -10);
90 test(U"abcdefghijklmnopqrst", U"", 20);
91 test(U"abcdefghijklmnopqrst", U"abcde", 15);
92 test(U"abcdefghijklmnopqrst", U"abcdefghij", 10);
93 test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0);
94 }
95
96 {
97 test(u"", u"", 0);
98 test(u"", u"abcde", -5);
99 test(u"", u"abcdefghij", -10);
100 test(u"", u"abcdefghijklmnopqrst", -20);
101 test(u"abcde", u"", 5);
102 test(u"abcde", u"abcde", 0);
103 test(u"abcde", u"abcdefghij", -5);
104 test(u"abcde", u"abcdefghijklmnopqrst", -15);
105 test(u"abcdefghij", u"", 10);
106 test(u"abcdefghij", u"abcde", 5);
107 test(u"abcdefghij", u"abcdefghij", 0);
108 test(u"abcdefghij", u"abcdefghijklmnopqrst", -10);
109 test(u"abcdefghijklmnopqrst", u"", 20);
110 test(u"abcdefghijklmnopqrst", u"abcde", 15);
111 test(u"abcdefghijklmnopqrst", u"abcdefghij", 10);
112 test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0);
113 }
114 #endif
115
116 #if TEST_STD_VER > 11
117 {
118 typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
119 constexpr SV sv1;
120 constexpr SV sv2 { "abcde", 5 };
121 static_assert ( sv1.compare("") == 0, "" );
122 static_assert ( sv1.compare("abcde") == -1, "" );
123 static_assert ( sv2.compare("") == 1, "" );
124 static_assert ( sv2.compare("abcde") == 0, "" );
125 }
126 #endif
127 }
128