I am using Boost Unit Test to perform unit test for my project. I need to test some non-type templates, however seems that using the macro BOOST_AUTO_TEST_CASE_TEMPLATE(test_case_name, formal_type_parameter_name, collection_of_types)
I can test only typed templates. I want to use a collection_of_types
not composed by { int, float, ...}
, but {0,1,2, ...}
.
Here an example of what I want to do:
#include <boost/test/included/unit_test.hpp>
#include <boost/mpl/list.hpp>
typedef boost::mpl::list<0, 1, 2, 4, 6> test_types;
BOOST_AUTO_TEST_CASE_TEMPLATE( my_test, T, test_types )
{
test_template<T>* test_tmpl = new test_template<T>();
// other code
}
You can always wrap static constants in a type. For integral types there is std::integral_constant
or indeed the Boost MPL analog:
#define BOOST_TEST_MODULE sotest
#define BOOST_TEST_MAIN
#include <boost/mpl/list.hpp>
#include <boost/test/included/unit_test.hpp>
template <int> struct test_template {};
typedef boost::mpl::list<
boost::mpl::integral_c<int, 0>,
boost::mpl::integral_c<int, 1>,
boost::mpl::integral_c<int, 2>,
boost::mpl::integral_c<int, 4>,
boost::mpl::integral_c<int, 6>
> test_types;
BOOST_AUTO_TEST_CASE_TEMPLATE(my_test, T, test_types) {
test_template<T::value>* test_tmpl = new test_template<T::value>();
// other code
delete test_tmpl;
}
Prints
Running 5 test cases...
*** No errors detected
To save on typing you can use a variadic template alias:
template <typename T, T... vv> using vlist =
boost::mpl::list<boost::mpl::integral_c<T, vv>... >;
Now you can define the list as:
using test_types = vlist<int, 0, 1, 2, 4, 6>;