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 p);
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,S expected)22 test(S s, typename S::difference_type pos, S expected)
23 {
24 typename S::const_iterator p = s.begin() + pos;
25 typename S::iterator i = s.erase(p);
26 LIBCPP_ASSERT(s.__invariants());
27 assert(s[s.size()] == typename S::value_type());
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("abcde"), 0, S("bcde"));
37 test(S("abcde"), 1, S("acde"));
38 test(S("abcde"), 2, S("abde"));
39 test(S("abcde"), 4, S("abcd"));
40 test(S("abcdefghij"), 0, S("bcdefghij"));
41 test(S("abcdefghij"), 1, S("acdefghij"));
42 test(S("abcdefghij"), 5, S("abcdeghij"));
43 test(S("abcdefghij"), 9, S("abcdefghi"));
44 test(S("abcdefghijklmnopqrst"), 0, S("bcdefghijklmnopqrst"));
45 test(S("abcdefghijklmnopqrst"), 1, S("acdefghijklmnopqrst"));
46 test(S("abcdefghijklmnopqrst"), 10, S("abcdefghijlmnopqrst"));
47 test(S("abcdefghijklmnopqrst"), 19, S("abcdefghijklmnopqrs"));
48 }
49 #if TEST_STD_VER >= 11
50 {
51 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
52 test(S("abcde"), 0, S("bcde"));
53 test(S("abcde"), 1, S("acde"));
54 test(S("abcde"), 2, S("abde"));
55 test(S("abcde"), 4, S("abcd"));
56 test(S("abcdefghij"), 0, S("bcdefghij"));
57 test(S("abcdefghij"), 1, S("acdefghij"));
58 test(S("abcdefghij"), 5, S("abcdeghij"));
59 test(S("abcdefghij"), 9, S("abcdefghi"));
60 test(S("abcdefghijklmnopqrst"), 0, S("bcdefghijklmnopqrst"));
61 test(S("abcdefghijklmnopqrst"), 1, S("acdefghijklmnopqrst"));
62 test(S("abcdefghijklmnopqrst"), 10, S("abcdefghijlmnopqrst"));
63 test(S("abcdefghijklmnopqrst"), 19, S("abcdefghijklmnopqrs"));
64 }
65 #endif
66 }
67