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// XFAIL: libcpp-no-exceptions
11// <string>
12
13// basic_string<charT,traits,Allocator>&
14//   append(const basic_string<charT,traits>& str, size_type pos, size_type n = npos);
15//  the "= npos" was added for C++14
16
17#include <string>
18#include <stdexcept>
19#include <cassert>
20
21#include "test_macros.h"
22#include "min_allocator.h"
23
24template <class S>
25void
26test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected)
27{
28    try
29    {
30        s.append(str, pos, n);
31        LIBCPP_ASSERT(s.__invariants());
32        assert(pos <= str.size());
33        assert(s == expected);
34    }
35    catch (std::out_of_range&)
36    {
37        assert(pos > str.size());
38    }
39}
40
41template <class S>
42void
43test_npos(S s, S str, typename S::size_type pos, S expected)
44{
45    try
46    {
47        s.append(str, pos);
48        LIBCPP_ASSERT(s.__invariants());
49        assert(pos <= str.size());
50        assert(s == expected);
51    }
52    catch (std::out_of_range&)
53    {
54        assert(pos > str.size());
55    }
56}
57
58int main()
59{
60    {
61    typedef std::string S;
62    test(S(), S(), 0, 0, S());
63    test(S(), S(), 1, 0, S());
64    test(S(), S("12345"), 0, 3, S("123"));
65    test(S(), S("12345"), 1, 4, S("2345"));
66    test(S(), S("12345"), 3, 15, S("45"));
67    test(S(), S("12345"), 5, 15, S(""));
68    test(S(), S("12345"), 6, 15, S("not happening"));
69    test(S(), S("12345678901234567890"), 0, 0, S());
70    test(S(), S("12345678901234567890"), 1, 1, S("2"));
71    test(S(), S("12345678901234567890"), 2, 3, S("345"));
72    test(S(), S("12345678901234567890"), 12, 13, S("34567890"));
73    test(S(), S("12345678901234567890"), 21, 13, S("not happening"));
74
75    test(S("12345"), S(), 0, 0, S("12345"));
76    test(S("12345"), S("12345"), 2, 2, S("1234534"));
77    test(S("12345"), S("1234567890"), 0, 100, S("123451234567890"));
78
79    test(S("12345678901234567890"), S(), 0, 0, S("12345678901234567890"));
80    test(S("12345678901234567890"), S("12345"), 1, 3, S("12345678901234567890234"));
81    test(S("12345678901234567890"), S("12345678901234567890"), 5, 10,
82         S("123456789012345678906789012345"));
83    }
84#if TEST_STD_VER >= 11
85    {
86    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
87    test(S(), S(), 0, 0, S());
88    test(S(), S(), 1, 0, S());
89    test(S(), S("12345"), 0, 3, S("123"));
90    test(S(), S("12345"), 1, 4, S("2345"));
91    test(S(), S("12345"), 3, 15, S("45"));
92    test(S(), S("12345"), 5, 15, S(""));
93    test(S(), S("12345"), 6, 15, S("not happening"));
94    test(S(), S("12345678901234567890"), 0, 0, S());
95    test(S(), S("12345678901234567890"), 1, 1, S("2"));
96    test(S(), S("12345678901234567890"), 2, 3, S("345"));
97    test(S(), S("12345678901234567890"), 12, 13, S("34567890"));
98    test(S(), S("12345678901234567890"), 21, 13, S("not happening"));
99
100    test(S("12345"), S(), 0, 0, S("12345"));
101    test(S("12345"), S("12345"), 2, 2, S("1234534"));
102    test(S("12345"), S("1234567890"), 0, 100, S("123451234567890"));
103
104    test(S("12345678901234567890"), S(), 0, 0, S("12345678901234567890"));
105    test(S("12345678901234567890"), S("12345"), 1, 3, S("12345678901234567890234"));
106    test(S("12345678901234567890"), S("12345678901234567890"), 5, 10,
107         S("123456789012345678906789012345"));
108    }
109#endif
110    {
111    typedef std::string S;
112    test_npos(S(), S(), 0, S());
113    test_npos(S(), S(), 1, S());
114    test_npos(S(), S("12345"), 0, S("12345"));
115    test_npos(S(), S("12345"), 1, S("2345"));
116    test_npos(S(), S("12345"), 3, S("45"));
117    test_npos(S(), S("12345"), 5, S(""));
118    test_npos(S(), S("12345"), 6, S("not happening"));
119    }
120}
121