a90c6dd460
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.3 KiB
C++
47 lines
1.3 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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// <iterator>
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// template <InputIterator Iter>
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// Iter next(Iter x, Iter::difference_type n = 1);
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#include <iterator>
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#include <cassert>
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#include "test_iterators.h"
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template <class It>
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void
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test(It i, typename std::iterator_traits<It>::difference_type n, It x)
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{
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assert(std::next(i, n) == x);
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}
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template <class It>
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void
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test(It i, It x)
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{
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assert(std::next(i) == x);
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}
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int main()
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{
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const char* s = "1234567890";
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test(forward_iterator<const char*>(s), 10, forward_iterator<const char*>(s+10));
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test(bidirectional_iterator<const char*>(s), 10, bidirectional_iterator<const char*>(s+10));
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test(random_access_iterator<const char*>(s), 10, random_access_iterator<const char*>(s+10));
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test(s, 10, s+10);
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test(forward_iterator<const char*>(s), forward_iterator<const char*>(s+1));
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test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+1));
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test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1));
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test(s, s+1);
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}
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