<http://www.gnu.org/licenses/>
#include "tpunit.h"
#include <stdlib.h>
#include <stx/btree_multiset.h>
struct RelationTest : public tpunit::TestFixture
{
    RelationTest() : tpunit::TestFixture(
        TEST(RelationTest::test_relations)
        )
    {}
    template <typename KeyType>
    struct traits_nodebug : stx::btree_default_set_traits<KeyType>
    {
        static const bool       selfverify = true;
        static const bool       debug = false;
        static const int        leafslots = 8;
        static const int        innerslots = 8;
    };
    void test_relations()
    {
        typedef stx::btree_multiset<unsigned int,
            std::less<unsigned int>, traits_nodebug<unsigned int> > btree_type;
        btree_type bt1, bt2;
        srand(34234236);
        for(unsigned int i = 0; i < 320; i++)
        {
            unsigned int key = rand() % 1000;
            bt1.insert(key);
            bt2.insert(key);
        }
        ASSERT( bt1 == bt2 );
        bt1.insert(499);
        bt2.insert(500);
        ASSERT( bt1 != bt2 );
        ASSERT( bt1 < bt2 );
        ASSERT( !(bt1 > bt2) );
        bt1.insert(500);
        bt2.insert(499);
        ASSERT( bt1 == bt2 );
        ASSERT( bt1 <= bt2 );
        
        btree_type bt3;
        bt3 = bt1;
        ASSERT( bt1 == bt3 );
        ASSERT( bt1 >= bt3 );
        
        btree_type bt4 = bt3;
        ASSERT( bt1 == bt4 );
    }
} __RelationTest;