forked from OSchip/llvm-project
118 lines
3.9 KiB
C++
118 lines
3.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// basic_string<charT,traits,Allocator>&
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// assign(const basic_string<charT,traits>& str);
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "min_allocator.h"
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#include "test_allocator.h"
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template <class S>
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void
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test(S s, S str, S expected)
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{
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s.assign(str);
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LIBCPP_ASSERT(s.__invariants());
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assert(s == expected);
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}
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template <class S>
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void
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testAlloc(S s, S str, const typename S::allocator_type& a)
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{
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s.assign(str);
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LIBCPP_ASSERT(s.__invariants());
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assert(s == str);
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assert(s.get_allocator() == a);
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}
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int main()
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{
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{
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typedef std::string S;
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test(S(), S(), S());
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test(S(), S("12345"), S("12345"));
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test(S(), S("1234567890"), S("1234567890"));
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test(S(), S("12345678901234567890"), S("12345678901234567890"));
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test(S("12345"), S(), S());
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test(S("12345"), S("12345"), S("12345"));
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test(S("12345"), S("1234567890"), S("1234567890"));
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test(S("12345"), S("12345678901234567890"), S("12345678901234567890"));
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test(S("1234567890"), S(), S());
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test(S("1234567890"), S("12345"), S("12345"));
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test(S("1234567890"), S("1234567890"), S("1234567890"));
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test(S("1234567890"), S("12345678901234567890"), S("12345678901234567890"));
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test(S("12345678901234567890"), S(), S());
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test(S("12345678901234567890"), S("12345"), S("12345"));
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test(S("12345678901234567890"), S("1234567890"), S("1234567890"));
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test(S("12345678901234567890"), S("12345678901234567890"),
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S("12345678901234567890"));
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testAlloc(S(), S(), std::allocator<char>());
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testAlloc(S(), S("12345"), std::allocator<char>());
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testAlloc(S(), S("1234567890"), std::allocator<char>());
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testAlloc(S(), S("12345678901234567890"), std::allocator<char>());
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}
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{ // LWG#5579 make sure assign takes the allocators where appropriate
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typedef other_allocator<char> A; // has POCCA --> true
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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testAlloc(S(A(5)), S(A(3)), A(3));
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testAlloc(S(A(5)), S("1"), A());
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testAlloc(S(A(5)), S("1", A(7)), A(7));
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testAlloc(S(A(5)), S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), A(7));
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}
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#if TEST_STD_VER >= 11
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{
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typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
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test(S(), S(), S());
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test(S(), S("12345"), S("12345"));
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test(S(), S("1234567890"), S("1234567890"));
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test(S(), S("12345678901234567890"), S("12345678901234567890"));
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test(S("12345"), S(), S());
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test(S("12345"), S("12345"), S("12345"));
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test(S("12345"), S("1234567890"), S("1234567890"));
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test(S("12345"), S("12345678901234567890"), S("12345678901234567890"));
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test(S("1234567890"), S(), S());
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test(S("1234567890"), S("12345"), S("12345"));
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test(S("1234567890"), S("1234567890"), S("1234567890"));
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test(S("1234567890"), S("12345678901234567890"), S("12345678901234567890"));
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test(S("12345678901234567890"), S(), S());
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test(S("12345678901234567890"), S("12345"), S("12345"));
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test(S("12345678901234567890"), S("1234567890"), S("1234567890"));
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test(S("12345678901234567890"), S("12345678901234567890"),
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S("12345678901234567890"));
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testAlloc(S(), S(), min_allocator<char>());
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testAlloc(S(), S("12345"), min_allocator<char>());
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testAlloc(S(), S("1234567890"), min_allocator<char>());
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testAlloc(S(), S("12345678901234567890"), min_allocator<char>());
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}
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#endif
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#if TEST_STD_VER > 14
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{
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typedef std::string S;
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static_assert(noexcept(S().assign(S())), ""); // LWG#2063
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}
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#endif
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}
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