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>
10
11 // template<class charT, class traits, class Allocator>
12 // bool operator>=(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
13
14 #include <string>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "min_allocator.h"
19
20 template <class S>
21 TEST_CONSTEXPR_CXX20 void
test(const typename S::value_type * lhs,const S & rhs,bool x)22 test(const typename S::value_type* lhs, const S& rhs, bool x)
23 {
24 assert((lhs >= rhs) == x);
25 }
26
test()27 TEST_CONSTEXPR_CXX20 bool test() {
28 {
29 typedef std::string S;
30 test("", S(""), true);
31 test("", S("abcde"), false);
32 test("", S("abcdefghij"), false);
33 test("", S("abcdefghijklmnopqrst"), false);
34 test("abcde", S(""), true);
35 test("abcde", S("abcde"), true);
36 test("abcde", S("abcdefghij"), false);
37 test("abcde", S("abcdefghijklmnopqrst"), false);
38 test("abcdefghij", S(""), true);
39 test("abcdefghij", S("abcde"), true);
40 test("abcdefghij", S("abcdefghij"), true);
41 test("abcdefghij", S("abcdefghijklmnopqrst"), false);
42 test("abcdefghijklmnopqrst", S(""), true);
43 test("abcdefghijklmnopqrst", S("abcde"), true);
44 test("abcdefghijklmnopqrst", S("abcdefghij"), true);
45 test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
46 }
47 #if TEST_STD_VER >= 11
48 {
49 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
50 test("", S(""), true);
51 test("", S("abcde"), false);
52 test("", S("abcdefghij"), false);
53 test("", S("abcdefghijklmnopqrst"), false);
54 test("abcde", S(""), true);
55 test("abcde", S("abcde"), true);
56 test("abcde", S("abcdefghij"), false);
57 test("abcde", S("abcdefghijklmnopqrst"), false);
58 test("abcdefghij", S(""), true);
59 test("abcdefghij", S("abcde"), true);
60 test("abcdefghij", S("abcdefghij"), true);
61 test("abcdefghij", S("abcdefghijklmnopqrst"), false);
62 test("abcdefghijklmnopqrst", S(""), true);
63 test("abcdefghijklmnopqrst", S("abcde"), true);
64 test("abcdefghijklmnopqrst", S("abcdefghij"), true);
65 test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
66 }
67 #endif
68
69 return true;
70 }
71
main(int,char **)72 int main(int, char**)
73 {
74 test();
75 #if TEST_STD_VER > 17
76 static_assert(test());
77 #endif
78
79 return 0;
80 }
81