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 // iterator erase(const_iterator first, const_iterator last);
13
14 #include <string>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "min_allocator.h"
19
20 template <class S>
21 void
test(S s,typename S::difference_type pos,typename S::difference_type n,S expected)22 test(S s, typename S::difference_type pos, typename S::difference_type n, S expected)
23 {
24 typename S::const_iterator first = s.cbegin() + pos;
25 typename S::const_iterator last = s.cbegin() + pos + n;
26 typename S::iterator i = s.erase(first, last);
27 LIBCPP_ASSERT(s.__invariants());
28 assert(s == expected);
29 assert(i - s.begin() == pos);
30 }
31
main()32 int main()
33 {
34 {
35 typedef std::string S;
36 test(S(""), 0, 0, S(""));
37 test(S("abcde"), 0, 0, S("abcde"));
38 test(S("abcde"), 0, 1, S("bcde"));
39 test(S("abcde"), 0, 2, S("cde"));
40 test(S("abcde"), 0, 4, S("e"));
41 test(S("abcde"), 0, 5, S(""));
42 test(S("abcde"), 1, 0, S("abcde"));
43 test(S("abcde"), 1, 1, S("acde"));
44 test(S("abcde"), 1, 2, S("ade"));
45 test(S("abcde"), 1, 3, S("ae"));
46 test(S("abcde"), 1, 4, S("a"));
47 test(S("abcde"), 2, 0, S("abcde"));
48 test(S("abcde"), 2, 1, S("abde"));
49 test(S("abcde"), 2, 2, S("abe"));
50 test(S("abcde"), 2, 3, S("ab"));
51 test(S("abcde"), 4, 0, S("abcde"));
52 test(S("abcde"), 4, 1, S("abcd"));
53 test(S("abcde"), 5, 0, S("abcde"));
54 test(S("abcdefghij"), 0, 0, S("abcdefghij"));
55 test(S("abcdefghij"), 0, 1, S("bcdefghij"));
56 test(S("abcdefghij"), 0, 5, S("fghij"));
57 test(S("abcdefghij"), 0, 9, S("j"));
58 test(S("abcdefghij"), 0, 10, S(""));
59 test(S("abcdefghij"), 1, 0, S("abcdefghij"));
60 test(S("abcdefghij"), 1, 1, S("acdefghij"));
61 test(S("abcdefghij"), 1, 4, S("afghij"));
62 test(S("abcdefghij"), 1, 8, S("aj"));
63 test(S("abcdefghij"), 1, 9, S("a"));
64 test(S("abcdefghij"), 5, 0, S("abcdefghij"));
65 test(S("abcdefghij"), 5, 1, S("abcdeghij"));
66 test(S("abcdefghij"), 5, 2, S("abcdehij"));
67 test(S("abcdefghij"), 5, 4, S("abcdej"));
68 test(S("abcdefghij"), 5, 5, S("abcde"));
69 test(S("abcdefghij"), 9, 0, S("abcdefghij"));
70 test(S("abcdefghij"), 9, 1, S("abcdefghi"));
71 test(S("abcdefghij"), 10, 0, S("abcdefghij"));
72 test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"));
73 test(S("abcdefghijklmnopqrst"), 0, 1, S("bcdefghijklmnopqrst"));
74 test(S("abcdefghijklmnopqrst"), 0, 10, S("klmnopqrst"));
75 test(S("abcdefghijklmnopqrst"), 0, 19, S("t"));
76 test(S("abcdefghijklmnopqrst"), 0, 20, S(""));
77 test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"));
78 test(S("abcdefghijklmnopqrst"), 1, 1, S("acdefghijklmnopqrst"));
79 test(S("abcdefghijklmnopqrst"), 1, 9, S("aklmnopqrst"));
80 test(S("abcdefghijklmnopqrst"), 1, 18, S("at"));
81 test(S("abcdefghijklmnopqrst"), 1, 19, S("a"));
82 test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"));
83 test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijlmnopqrst"));
84 test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijpqrst"));
85 test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijt"));
86 test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"));
87 test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"));
88 test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrs"));
89 test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"));
90 }
91 #if TEST_STD_VER >= 11
92 {
93 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
94 test(S(""), 0, 0, S(""));
95 test(S("abcde"), 0, 0, S("abcde"));
96 test(S("abcde"), 0, 1, S("bcde"));
97 test(S("abcde"), 0, 2, S("cde"));
98 test(S("abcde"), 0, 4, S("e"));
99 test(S("abcde"), 0, 5, S(""));
100 test(S("abcde"), 1, 0, S("abcde"));
101 test(S("abcde"), 1, 1, S("acde"));
102 test(S("abcde"), 1, 2, S("ade"));
103 test(S("abcde"), 1, 3, S("ae"));
104 test(S("abcde"), 1, 4, S("a"));
105 test(S("abcde"), 2, 0, S("abcde"));
106 test(S("abcde"), 2, 1, S("abde"));
107 test(S("abcde"), 2, 2, S("abe"));
108 test(S("abcde"), 2, 3, S("ab"));
109 test(S("abcde"), 4, 0, S("abcde"));
110 test(S("abcde"), 4, 1, S("abcd"));
111 test(S("abcde"), 5, 0, S("abcde"));
112 test(S("abcdefghij"), 0, 0, S("abcdefghij"));
113 test(S("abcdefghij"), 0, 1, S("bcdefghij"));
114 test(S("abcdefghij"), 0, 5, S("fghij"));
115 test(S("abcdefghij"), 0, 9, S("j"));
116 test(S("abcdefghij"), 0, 10, S(""));
117 test(S("abcdefghij"), 1, 0, S("abcdefghij"));
118 test(S("abcdefghij"), 1, 1, S("acdefghij"));
119 test(S("abcdefghij"), 1, 4, S("afghij"));
120 test(S("abcdefghij"), 1, 8, S("aj"));
121 test(S("abcdefghij"), 1, 9, S("a"));
122 test(S("abcdefghij"), 5, 0, S("abcdefghij"));
123 test(S("abcdefghij"), 5, 1, S("abcdeghij"));
124 test(S("abcdefghij"), 5, 2, S("abcdehij"));
125 test(S("abcdefghij"), 5, 4, S("abcdej"));
126 test(S("abcdefghij"), 5, 5, S("abcde"));
127 test(S("abcdefghij"), 9, 0, S("abcdefghij"));
128 test(S("abcdefghij"), 9, 1, S("abcdefghi"));
129 test(S("abcdefghij"), 10, 0, S("abcdefghij"));
130 test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"));
131 test(S("abcdefghijklmnopqrst"), 0, 1, S("bcdefghijklmnopqrst"));
132 test(S("abcdefghijklmnopqrst"), 0, 10, S("klmnopqrst"));
133 test(S("abcdefghijklmnopqrst"), 0, 19, S("t"));
134 test(S("abcdefghijklmnopqrst"), 0, 20, S(""));
135 test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"));
136 test(S("abcdefghijklmnopqrst"), 1, 1, S("acdefghijklmnopqrst"));
137 test(S("abcdefghijklmnopqrst"), 1, 9, S("aklmnopqrst"));
138 test(S("abcdefghijklmnopqrst"), 1, 18, S("at"));
139 test(S("abcdefghijklmnopqrst"), 1, 19, S("a"));
140 test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"));
141 test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijlmnopqrst"));
142 test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijpqrst"));
143 test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijt"));
144 test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"));
145 test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"));
146 test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrs"));
147 test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"));
148 }
149 #endif
150 }
151