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79 lines
1.6 KiB
79 lines
1.6 KiB
4 months ago
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//===----------------------------------------------------------------------===//
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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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// const_reference at(size_type pos) const;
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// reference at(size_type pos);
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#include <string>
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#include <stdexcept>
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#include <cassert>
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#include "min_allocator.h"
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#include "test_macros.h"
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template <class S>
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void
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test(S s, typename S::size_type pos)
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{
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const S& cs = s;
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if (pos < s.size())
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{
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assert(s.at(pos) == s[pos]);
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assert(cs.at(pos) == cs[pos]);
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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else
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{
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try
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{
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TEST_IGNORE_NODISCARD s.at(pos);
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assert(false);
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}
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catch (std::out_of_range&)
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{
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assert(pos >= s.size());
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}
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try
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{
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TEST_IGNORE_NODISCARD cs.at(pos);
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assert(false);
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}
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catch (std::out_of_range&)
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{
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assert(pos >= s.size());
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}
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}
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#endif
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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(), 0);
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test(S("123"), 0);
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test(S("123"), 1);
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test(S("123"), 2);
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test(S("123"), 3);
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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(), 0);
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test(S("123"), 0);
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test(S("123"), 1);
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test(S("123"), 2);
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test(S("123"), 3);
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}
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#endif
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}
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