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>
11 
12 // template<class charT, class traits, class Allocator>
13 //   basic_string<charT,traits,Allocator>
14 //   operator+(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs);
15 
16 // template<class charT, class traits, class Allocator>
17 //   basic_string<charT,traits,Allocator>&&
18 //   operator+(const charT* lhs, basic_string<charT,traits,Allocator>&& rhs);
19 
20 #include <string>
21 #include <utility>
22 #include <cassert>
23 
24 #include "test_macros.h"
25 #include "min_allocator.h"
26 
27 template <class S>
28 void test0(const typename S::value_type* lhs, const S& rhs, const S& x) {
29   assert(lhs + rhs == x);
30 }
31 
32 #if TEST_STD_VER >= 11
33 template <class S>
34 void test1(const typename S::value_type* lhs, S&& rhs, const S& x) {
35   assert(lhs + move(rhs) == x);
36 }
37 #endif
38 
39 int main() {
40   {
41     typedef std::string S;
42     test0("", S(""), S(""));
43     test0("", S("12345"), S("12345"));
44     test0("", S("1234567890"), S("1234567890"));
45     test0("", S("12345678901234567890"), S("12345678901234567890"));
46     test0("abcde", S(""), S("abcde"));
47     test0("abcde", S("12345"), S("abcde12345"));
48     test0("abcde", S("1234567890"), S("abcde1234567890"));
49     test0("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
50     test0("abcdefghij", S(""), S("abcdefghij"));
51     test0("abcdefghij", S("12345"), S("abcdefghij12345"));
52     test0("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
53     test0("abcdefghij", S("12345678901234567890"),
54           S("abcdefghij12345678901234567890"));
55     test0("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
56     test0("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
57     test0("abcdefghijklmnopqrst", S("1234567890"),
58           S("abcdefghijklmnopqrst1234567890"));
59     test0("abcdefghijklmnopqrst", S("12345678901234567890"),
60           S("abcdefghijklmnopqrst12345678901234567890"));
61   }
62 
63 #if TEST_STD_VER >= 11
64   {
65     typedef std::string S;
66     test1("", S(""), S(""));
67     test1("", S("12345"), S("12345"));
68     test1("", S("1234567890"), S("1234567890"));
69     test1("", S("12345678901234567890"), S("12345678901234567890"));
70     test1("abcde", S(""), S("abcde"));
71     test1("abcde", S("12345"), S("abcde12345"));
72     test1("abcde", S("1234567890"), S("abcde1234567890"));
73     test1("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
74     test1("abcdefghij", S(""), S("abcdefghij"));
75     test1("abcdefghij", S("12345"), S("abcdefghij12345"));
76     test1("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
77     test1("abcdefghij", S("12345678901234567890"),
78           S("abcdefghij12345678901234567890"));
79     test1("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
80     test1("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
81     test1("abcdefghijklmnopqrst", S("1234567890"),
82           S("abcdefghijklmnopqrst1234567890"));
83     test1("abcdefghijklmnopqrst", S("12345678901234567890"),
84           S("abcdefghijklmnopqrst12345678901234567890"));
85   }
86   {
87     typedef std::basic_string<char, std::char_traits<char>,
88                               min_allocator<char> >
89         S;
90     test0("", S(""), S(""));
91     test0("", S("12345"), S("12345"));
92     test0("", S("1234567890"), S("1234567890"));
93     test0("", S("12345678901234567890"), S("12345678901234567890"));
94     test0("abcde", S(""), S("abcde"));
95     test0("abcde", S("12345"), S("abcde12345"));
96     test0("abcde", S("1234567890"), S("abcde1234567890"));
97     test0("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
98     test0("abcdefghij", S(""), S("abcdefghij"));
99     test0("abcdefghij", S("12345"), S("abcdefghij12345"));
100     test0("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
101     test0("abcdefghij", S("12345678901234567890"),
102           S("abcdefghij12345678901234567890"));
103     test0("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
104     test0("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
105     test0("abcdefghijklmnopqrst", S("1234567890"),
106           S("abcdefghijklmnopqrst1234567890"));
107     test0("abcdefghijklmnopqrst", S("12345678901234567890"),
108           S("abcdefghijklmnopqrst12345678901234567890"));
109 
110     test1("", S(""), S(""));
111     test1("", S("12345"), S("12345"));
112     test1("", S("1234567890"), S("1234567890"));
113     test1("", S("12345678901234567890"), S("12345678901234567890"));
114     test1("abcde", S(""), S("abcde"));
115     test1("abcde", S("12345"), S("abcde12345"));
116     test1("abcde", S("1234567890"), S("abcde1234567890"));
117     test1("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
118     test1("abcdefghij", S(""), S("abcdefghij"));
119     test1("abcdefghij", S("12345"), S("abcdefghij12345"));
120     test1("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
121     test1("abcdefghij", S("12345678901234567890"),
122           S("abcdefghij12345678901234567890"));
123     test1("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
124     test1("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
125     test1("abcdefghijklmnopqrst", S("1234567890"),
126           S("abcdefghijklmnopqrst1234567890"));
127     test1("abcdefghijklmnopqrst", S("12345678901234567890"),
128           S("abcdefghijklmnopqrst12345678901234567890"));
129   }
130 #endif
131 }
132