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Fix comparison operators enabler

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Overloads must not be presented until both arguments are Fusion sequences.
This commit is contained in:
Nikita Kniazev
2019-12-04 02:42:26 +03:00
parent 5f30a8da60
commit 4778c4c180
2 changed files with 24 additions and 2 deletions
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22
test/sequence/comparison.hpp
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@ -8,6 +8,20 @@
#include <boost/detail/lightweight_test.hpp>
#include <boost/fusion/sequence/comparison.hpp>
struct not_a_fusion_container {};
template <typename T>
inline bool operator==(not_a_fusion_container, T const&) { return true; }
template <typename T>
inline bool operator!=(not_a_fusion_container, T const&) { return true; }
template <typename T>
inline bool operator<(not_a_fusion_container, T const&) { return true; }
template <typename T>
inline bool operator<=(not_a_fusion_container, T const&) { return true; }
template <typename T>
inline bool operator>(not_a_fusion_container, T const&) { return true; }
template <typename T>
inline bool operator>=(not_a_fusion_container, T const&) { return true; }
void
equality_test()
{
@ -28,6 +42,9 @@ equality_test()
BOOST_TEST(!(v1 == v5));
BOOST_TEST(v5 != v1);
BOOST_TEST(!(v5 == v1));
BOOST_TEST(not_a_fusion_container() == v1);
BOOST_TEST(not_a_fusion_container() != v1);
}
void
@ -51,6 +68,11 @@ ordering_test()
FUSION_SEQUENCE<int, char, bool> v5(5, 'a', true);
v1 >= v5;
#endif
BOOST_TEST(not_a_fusion_container() > v1);
BOOST_TEST(not_a_fusion_container() >= v1);
BOOST_TEST(not_a_fusion_container() < v1);
BOOST_TEST(not_a_fusion_container() <= v1);
}