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Added test for constant iterator idiom.

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[SVN r1295]
This commit is contained in:
Thomas Witt
2003-05-30 14:57:41 +00:00
parent 021e048e06
commit e2b58d1eea
1 changed files with 26 additions and 1 deletions
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27
test/iterator_adaptor_test.cpp
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@@ -155,6 +155,19 @@ public:
in_iterator(boost::input_iterator_archetype<T> d) : super_t(d) { } in_iterator(boost::input_iterator_archetype<T> d) : super_t(d) { }
}; };
template <class Iter>
struct constant_iterator
: boost::iterator_adaptor<
constant_iterator<Iter>
, Iter
, typename std::iterator_traits<Iter>::value_type const
>
{
constant_iterator() {}
constant_iterator(Iter it)
: constant_iterator::iterator_adaptor(it) {}
};
int int
main() main()
{ {
@@ -194,7 +207,6 @@ main()
typedef ptr_iterator<int const> Iter1; typedef ptr_iterator<int const> Iter1;
BOOST_STATIC_ASSERT((boost::is_same<Iter1::value_type, int>::value)); BOOST_STATIC_ASSERT((boost::is_same<Iter1::value_type, int>::value));
BOOST_STATIC_ASSERT((boost::is_same<Iter1::reference, const int&>::value)); BOOST_STATIC_ASSERT((boost::is_same<Iter1::reference, const int&>::value));
BOOST_STATIC_ASSERT((boost::is_same<Iter1::iterator_category::returns, boost::readable_lvalue_iterator_tag>::value)); BOOST_STATIC_ASSERT((boost::is_same<Iter1::iterator_category::returns, boost::readable_lvalue_iterator_tag>::value));
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551)) #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
@@ -203,6 +215,19 @@ main()
#endif #endif
} }
{
// Test constant iterator idiom
typedef ptr_iterator<int> BaseIter;
typedef constant_iterator<BaseIter> Iter;
BOOST_STATIC_ASSERT((boost::is_same<Iter::value_type, int>::value));
BOOST_STATIC_ASSERT((boost::is_same<Iter::reference, int const&>::value));
BOOST_STATIC_ASSERT((boost::is_same<Iter::pointer, int const*>::value));
BOOST_STATIC_ASSERT((boost::is_same<BaseIter::iterator_category::returns, boost::writable_lvalue_iterator_tag>::value));
BOOST_STATIC_ASSERT((boost::is_same<Iter::iterator_category::returns, boost::readable_lvalue_iterator_tag>::value));
}
// Test the iterator_adaptor // Test the iterator_adaptor
{ {
ptr_iterator<dummyT> i(array); ptr_iterator<dummyT> i(array);