b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
131 lines
4.2 KiB
C++
131 lines
4.2 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(const basic_string<charT,traits,Allocator>& str,
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// size_type pos, size_type n = npos,
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// const Allocator& a = Allocator());
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#include <string>
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#include <stdexcept>
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#include <algorithm>
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#include <cassert>
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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 str, unsigned pos)
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{
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typedef typename S::traits_type T;
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typedef typename S::allocator_type A;
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try
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{
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S s2(str, pos);
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assert(s2.__invariants());
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assert(pos <= str.size());
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unsigned rlen = str.size() - pos;
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assert(s2.size() == rlen);
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assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
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assert(s2.get_allocator() == A());
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assert(s2.capacity() >= s2.size());
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}
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catch (std::out_of_range&)
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{
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assert(pos > str.size());
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}
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}
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template <class S>
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void
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test(S str, unsigned pos, unsigned n)
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{
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typedef typename S::traits_type T;
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typedef typename S::allocator_type A;
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try
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{
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S s2(str, pos, n);
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assert(s2.__invariants());
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assert(pos <= str.size());
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unsigned rlen = std::min(str.size() - pos, n);
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assert(s2.size() == rlen);
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assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
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assert(s2.get_allocator() == A());
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assert(s2.capacity() >= s2.size());
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}
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catch (std::out_of_range&)
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{
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assert(pos > str.size());
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}
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}
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template <class S>
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void
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test(S str, unsigned pos, unsigned n, const typename S::allocator_type& a)
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{
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typedef typename S::traits_type T;
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typedef typename S::allocator_type A;
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try
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{
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S s2(str, pos, n, a);
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assert(s2.__invariants());
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assert(pos <= str.size());
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unsigned rlen = std::min(str.size() - pos, n);
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assert(s2.size() == rlen);
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assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
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assert(s2.get_allocator() == a);
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assert(s2.capacity() >= s2.size());
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}
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catch (std::out_of_range&)
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{
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assert(pos > str.size());
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}
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}
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int main()
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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test(S(A(3)), 0);
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test(S(A(3)), 1);
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test(S("1", A(5)), 0);
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test(S("1", A(5)), 1);
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test(S("1", A(5)), 2);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 0);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 5);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 500);
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test(S(A(3)), 0, 0);
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test(S(A(3)), 0, 1);
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test(S(A(3)), 1, 0);
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test(S(A(3)), 1, 1);
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test(S(A(3)), 1, 2);
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test(S("1", A(5)), 0, 0);
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test(S("1", A(5)), 0, 1);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 0);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 1);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 10);
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 100);
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test(S(A(3)), 0, 0, A(4));
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test(S(A(3)), 0, 1, A(4));
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test(S(A(3)), 1, 0, A(4));
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test(S(A(3)), 1, 1, A(4));
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test(S(A(3)), 1, 2, A(4));
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test(S("1", A(5)), 0, 0, A(6));
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test(S("1", A(5)), 0, 1, A(6));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 0, A(8));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 1, A(8));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 10, A(8));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 100, A(8));
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}
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