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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 //   operator=(const basic_string<charT,traits,Allocator>& str);
     14 
     15 #include <string>
     16 #include <cassert>
     17 
     18 #include "test_macros.h"
     19 #include "min_allocator.h"
     20 
     21 template <class S>
     22 void
     23 test(S s1, const S& s2)
     24 {
     25     s1 = s2;
     26     LIBCPP_ASSERT(s1.__invariants());
     27     assert(s1 == s2);
     28     assert(s1.capacity() >= s1.size());
     29 }
     30 
     31 int main()
     32 {
     33     {
     34     typedef std::string S;
     35     test(S(), S());
     36     test(S("1"), S());
     37     test(S(), S("1"));
     38     test(S("1"), S("2"));
     39     test(S("1"), S("2"));
     40 
     41     test(S(),
     42          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     43     test(S("123456789"),
     44          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     45     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
     46          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     47     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
     48            "1234567890123456789012345678901234567890123456789012345678901234567890"),
     49          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     50     }
     51 #if TEST_STD_VER >= 11
     52     {
     53     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
     54     test(S(), S());
     55     test(S("1"), S());
     56     test(S(), S("1"));
     57     test(S("1"), S("2"));
     58     test(S("1"), S("2"));
     59 
     60     test(S(),
     61          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     62     test(S("123456789"),
     63          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     64     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
     65          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     66     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
     67            "1234567890123456789012345678901234567890123456789012345678901234567890"),
     68          S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
     69     }
     70 #endif
     71 }
     72