boost_mirror/utility
1
0
Fork 0
mirror of https://github.com/boostorg/utility.git synced 2025-05-09 15:04:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

More comprehensive testing; factored out static tests for better reuse

Browse Source 
[SVN r9001]
This commit is contained in:
Dave Abrahams 2001-02-07 16:38:41 +00:00
parent c25d225275
commit f82d0b76ee
1 changed files with 86 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

156
iterator_traits_test.cpp
View File

@ -7,6 +7,8 @@
// See http://www.boost.org for most recent version including documentation.
// Revision History
// 07 Feb 2001 More comprehensive testing; factored out static tests for
// better reuse (David Abrahams)
// 21 Jan 2001 Quick fix to my_iterator, which wasn't returning a
// reference type from operator* (David Abrahams)
// 19 Jan 2001 Initial version with iterator operators (David Abrahams)
@ -35,91 +37,103 @@ struct my_iterator
const char* m_p;
};
// Test difference_type and iterator_category
// istream_iterator (forward_iterator_tag, ptrdiff_t)
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::istream_iterator<int> >::iterator_category,
std::input_iterator_tag
>::value));
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct non_portable_tests
{
// Unfortunately, the VC6 standard library doesn't supply these :(
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<Iterator>::pointer,
pointer
>::value));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::istream_iterator<int> >::difference_type,
std::ptrdiff_t
>::value));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<Iterator>::reference,
reference
>::value));
};
// ostream_iterator (output_iterator_tag, void)
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::ostream_iterator<int> >::iterator_category,
std::output_iterator_tag
>::value));
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct portable_tests
{
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<Iterator>::difference_type,
difference_type
>::value));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::ostream_iterator<int> >::difference_type,
void
>::value));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<Iterator>::iterator_category,
category
>::value));
};
// list<int>::iterator (bidirectional_iterator_tag, ptrdiff_t)
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::list<int>::iterator>::iterator_category,
std::bidirectional_iterator_tag
>::value));
// Test iterator_traits
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct input_iterator_test
: portable_tests<Iterator,value_type,difference_type,pointer,reference,category>
{
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<Iterator>::value_type,
value_type
>::value));
};
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct non_pointer_test
: input_iterator_test<Iterator,value_type,difference_type,pointer,reference,category>
#if !defined(BOOST_MSVC) || defined(__SGI_STL_PORT)
, non_portable_tests<Iterator,value_type,difference_type,pointer,reference,category>
#endif
{
};
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct maybe_pointer_test
: portable_tests<Iterator,value_type,difference_type,pointer,reference,category>
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
, non_portable_tests<Iterator,value_type,difference_type,pointer,reference,category>
#endif
{
};
input_iterator_test<std::istream_iterator<int>, int, std::ptrdiff_t, int*, int&, std::input_iterator_tag>
istream_iterator_test;
non_pointer_test<std::ostream_iterator<int>,
#if !defined(BOOST_MSVC) || defined(__SGI_STL_PORT)
void,
#else // the VC6 standard lib gives ostream_iterator an incorrect value_type
int,
#endif
void, void, void, std::output_iterator_tag>
ostream_iterator_test;
#ifdef __KCC
typedef long std_list_diff_type;
#else
typedef std::ptrdiff_t std_list_diff_type;
#endif
non_pointer_test<std::list<int>::iterator, int, std_list_diff_type, int*, int&, std::bidirectional_iterator_tag>
list_iterator_test;
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::list<int>::iterator>::difference_type,
std_list_diff_type
>::value));
maybe_pointer_test<std::vector<int>::iterator, int, std::ptrdiff_t, int*, int&, std::random_access_iterator_tag>
vector_iterator_test;
// vector<int>::iterator (random_access_iterator_tag, ptrdiff_t)
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::vector<int>::iterator>::iterator_category,
std::random_access_iterator_tag
>::value));
maybe_pointer_test<int*, int, std::ptrdiff_t, int*, int&, std::random_access_iterator_tag>
int_pointer_test;
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<std::vector<int>::iterator>::difference_type,
std::ptrdiff_t
>::value));
// int* (random_access_iterator_tag, ptrdiff_t)
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<int*>::iterator_category,
std::random_access_iterator_tag
>::value));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<int*>::difference_type,
std::ptrdiff_t
>::value));
// my_iterator (forward_iterator_tag, long)
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<my_iterator>::iterator_category,
std::forward_iterator_tag
>::value));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::detail::iterator_traits<my_iterator>::difference_type,
long
>::value));
non_pointer_test<my_iterator, const char, long, const char*, const char&, std::forward_iterator_tag>
my_iterator_test;
int main()
{