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      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 //   assign(basic_string_view<charT,traits> sv);
     14 
     15 #include <string>
     16 #include <string_view>
     17 #include <cassert>
     18 
     19 #include "test_macros.h"
     20 #include "min_allocator.h"
     21 #include "test_allocator.h"
     22 
     23 template <class S, class SV>
     24 void
     25 test(S s, SV sv, S expected)
     26 {
     27     s.assign(sv);
     28     LIBCPP_ASSERT(s.__invariants());
     29     assert(s == expected);
     30 }
     31 
     32 template <class S, class SV>
     33 void
     34 testAlloc(S s, SV sv, const typename S::allocator_type& a)
     35 {
     36     s.assign(sv);
     37     LIBCPP_ASSERT(s.__invariants());
     38     assert(s == sv);
     39     assert(s.get_allocator() == a);
     40 }
     41 
     42 int main()
     43 {
     44     {
     45     typedef std::string S;
     46     typedef std::string_view SV;
     47     test(S(), SV(), S());
     48     test(S(), SV("12345"), S("12345"));
     49     test(S(), SV("1234567890"), S("1234567890"));
     50     test(S(), SV("12345678901234567890"), S("12345678901234567890"));
     51 
     52     test(S("12345"), SV(), S());
     53     test(S("12345"), SV("12345"), S("12345"));
     54     test(S("12345"), SV("1234567890"), S("1234567890"));
     55     test(S("12345"), SV("12345678901234567890"), S("12345678901234567890"));
     56 
     57     test(S("1234567890"), SV(), S());
     58     test(S("1234567890"), SV("12345"), S("12345"));
     59     test(S("1234567890"), SV("1234567890"), S("1234567890"));
     60     test(S("1234567890"), SV("12345678901234567890"), S("12345678901234567890"));
     61 
     62     test(S("12345678901234567890"), SV(), S());
     63     test(S("12345678901234567890"), SV("12345"), S("12345"));
     64     test(S("12345678901234567890"), SV("1234567890"), S("1234567890"));
     65     test(S("12345678901234567890"), SV("12345678901234567890"),
     66          S("12345678901234567890"));
     67 
     68     testAlloc(S(), SV(), std::allocator<char>());
     69     testAlloc(S(), SV("12345"), std::allocator<char>());
     70     testAlloc(S(), SV("1234567890"), std::allocator<char>());
     71     testAlloc(S(), SV("12345678901234567890"), std::allocator<char>());
     72     }
     73 
     74 #if TEST_STD_VER >= 11
     75     {
     76     typedef std::basic_string     <char, std::char_traits<char>, min_allocator<char>> S;
     77     typedef std::basic_string_view<char, std::char_traits<char> > SV;
     78     test(S(), SV(), S());
     79     test(S(), SV("12345"), S("12345"));
     80     test(S(), SV("1234567890"), S("1234567890"));
     81     test(S(), SV("12345678901234567890"), S("12345678901234567890"));
     82 
     83     test(S("12345"), SV(), S());
     84     test(S("12345"), SV("12345"), S("12345"));
     85     test(S("12345"), SV("1234567890"), S("1234567890"));
     86     test(S("12345"), SV("12345678901234567890"), S("12345678901234567890"));
     87 
     88     test(S("1234567890"), SV(), S());
     89     test(S("1234567890"), SV("12345"), S("12345"));
     90     test(S("1234567890"), SV("1234567890"), S("1234567890"));
     91     test(S("1234567890"), SV("12345678901234567890"), S("12345678901234567890"));
     92 
     93     test(S("12345678901234567890"), SV(), S());
     94     test(S("12345678901234567890"), SV("12345"), S("12345"));
     95     test(S("12345678901234567890"), SV("1234567890"), S("1234567890"));
     96     test(S("12345678901234567890"), SV("12345678901234567890"),
     97          S("12345678901234567890"));
     98 
     99     testAlloc(S(), SV(), min_allocator<char>());
    100     testAlloc(S(), SV("12345"), min_allocator<char>());
    101     testAlloc(S(), SV("1234567890"), min_allocator<char>());
    102     testAlloc(S(), SV("12345678901234567890"), min_allocator<char>());
    103     }
    104 #endif
    105 }
    106