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 // basic_string<charT,traits,Allocator>&
13 // append(const basic_string<charT,traits>& str, size_type pos, size_type n = npos);
14 // the "= npos" was added for C++14
15
16 #include <string>
17 #include <stdexcept>
18 #include <cassert>
19
20 #include "min_allocator.h"
21
22 template <class S>
23 void
test(S s,S str,typename S::size_type pos,typename S::size_type n,S expected)24 test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected)
25 {
26 try
27 {
28 s.append(str, pos, n);
29 assert(s.__invariants());
30 assert(pos <= str.size());
31 assert(s == expected);
32 }
33 catch (std::out_of_range&)
34 {
35 assert(pos > str.size());
36 }
37 }
38
39 template <class S>
40 void
test_npos(S s,S str,typename S::size_type pos,S expected)41 test_npos(S s, S str, typename S::size_type pos, S expected)
42 {
43 try
44 {
45 s.append(str, pos);
46 assert(s.__invariants());
47 assert(pos <= str.size());
48 assert(s == expected);
49 }
50 catch (std::out_of_range&)
51 {
52 assert(pos > str.size());
53 }
54 }
55
main()56 int main()
57 {
58 {
59 typedef std::string S;
60 test(S(), S(), 0, 0, S());
61 test(S(), S(), 1, 0, S());
62 test(S(), S("12345"), 0, 3, S("123"));
63 test(S(), S("12345"), 1, 4, S("2345"));
64 test(S(), S("12345"), 3, 15, S("45"));
65 test(S(), S("12345"), 5, 15, S(""));
66 test(S(), S("12345"), 6, 15, S("not happening"));
67 test(S(), S("12345678901234567890"), 0, 0, S());
68 test(S(), S("12345678901234567890"), 1, 1, S("2"));
69 test(S(), S("12345678901234567890"), 2, 3, S("345"));
70 test(S(), S("12345678901234567890"), 12, 13, S("34567890"));
71 test(S(), S("12345678901234567890"), 21, 13, S("not happening"));
72
73 test(S("12345"), S(), 0, 0, S("12345"));
74 test(S("12345"), S("12345"), 2, 2, S("1234534"));
75 test(S("12345"), S("1234567890"), 0, 100, S("123451234567890"));
76
77 test(S("12345678901234567890"), S(), 0, 0, S("12345678901234567890"));
78 test(S("12345678901234567890"), S("12345"), 1, 3, S("12345678901234567890234"));
79 test(S("12345678901234567890"), S("12345678901234567890"), 5, 10,
80 S("123456789012345678906789012345"));
81 }
82 #if __cplusplus >= 201103L
83 {
84 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
85 test(S(), S(), 0, 0, S());
86 test(S(), S(), 1, 0, S());
87 test(S(), S("12345"), 0, 3, S("123"));
88 test(S(), S("12345"), 1, 4, S("2345"));
89 test(S(), S("12345"), 3, 15, S("45"));
90 test(S(), S("12345"), 5, 15, S(""));
91 test(S(), S("12345"), 6, 15, S("not happening"));
92 test(S(), S("12345678901234567890"), 0, 0, S());
93 test(S(), S("12345678901234567890"), 1, 1, S("2"));
94 test(S(), S("12345678901234567890"), 2, 3, S("345"));
95 test(S(), S("12345678901234567890"), 12, 13, S("34567890"));
96 test(S(), S("12345678901234567890"), 21, 13, S("not happening"));
97
98 test(S("12345"), S(), 0, 0, S("12345"));
99 test(S("12345"), S("12345"), 2, 2, S("1234534"));
100 test(S("12345"), S("1234567890"), 0, 100, S("123451234567890"));
101
102 test(S("12345678901234567890"), S(), 0, 0, S("12345678901234567890"));
103 test(S("12345678901234567890"), S("12345"), 1, 3, S("12345678901234567890234"));
104 test(S("12345678901234567890"), S("12345678901234567890"), 5, 10,
105 S("123456789012345678906789012345"));
106 }
107 #endif
108 {
109 typedef std::string S;
110 test_npos(S(), S(), 0, S());
111 test_npos(S(), S(), 1, S());
112 test_npos(S(), S("12345"), 0, S("12345"));
113 test_npos(S(), S("12345"), 1, S("2345"));
114 test_npos(S(), S("12345"), 3, S("45"));
115 test_npos(S(), S("12345"), 5, S(""));
116 test_npos(S(), S("12345"), 6, S("not happening"));
117 }
118 }
119