add: free_add_find_functions_tests();
context: main(){    default_constructible();    narrow_match_tests();    narrow_copy_ctor_tests();    narrow_assigment_operator_tests();    narrow_value_tests();    narrow_free_functions_tests();    wide_match_tests();    wide_copy_ctor_tests();    wide_assigment_operator_tests();    wide_value_tests();    wide_free_functions_tests();    return boost::report_errors();}