BOOST_DATA_TEST_CASE with fixture support - c++

Question

I'm looking for fixture support in BOOST_DATA_TEST_CASE. I wrote following C++ macros for it, but may be somebody has something better?
#include <boost/test/unit_test.hpp>
#include <boost/test/data/test_case.hpp>
#define BOOST_FIXTURE_DATA_TEST_CASE_IMPL( arity, test_name, F, dataset, params ) \
struct test_name : public F { \
template<BOOST_PP_ENUM_PARAMS(arity, typename Arg)> \
static void test_method( BOOST_DATA_TEST_CASE_PARAMS( params ) ) \
{ \
BOOST_TEST_CHECKPOINT('"' << #test_name << "\" fixture entry."); \
test_name t; \
BOOST_TEST_CHECKPOINT('"' << #test_name << "\" entry."); \
BOOST_TEST_CONTEXT( "" \
BOOST_PP_SEQ_FOR_EACH(BOOST_DATA_TEST_CONTEXT, _, params)) \
t._impl(BOOST_PP_SEQ_ENUM(params)); \
BOOST_TEST_CHECKPOINT('"' << #test_name << "\" exit."); \
} \
private: \
template<BOOST_PP_ENUM_PARAMS(arity, typename Arg)> \
void _impl(BOOST_DATA_TEST_CASE_PARAMS( params )); \
}; \
\
BOOST_AUTO_TU_REGISTRAR( test_name )( \
boost::unit_test::data::ds_detail::make_test_case_gen<test_name>( \
BOOST_STRINGIZE( test_name ), \
__FILE__, __LINE__, \
boost::unit_test::data::make(dataset) ), \
boost::unit_test::decorator::collector::instance() ); \
\
template<BOOST_PP_ENUM_PARAMS(arity, typename Arg)> \
void test_name::_impl( BOOST_DATA_TEST_CASE_PARAMS( params ) ) \
/**/
#define BOOST_AUTO_DATA_TEST_CASE_WITH_PARAMS( test_name, dataset, ... ) \
BOOST_FIXTURE_DATA_TEST_CASE_IMPL( BOOST_PP_VARIADIC_SIZE(__VA_ARGS__), \
test_name, BOOST_AUTO_TEST_CASE_FIXTURE, dataset, \
BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__) ) \
/**/
#define BOOST_AUTO_DATA_TEST_CASE_NO_PARAMS( test_name, dataset ) \
BOOST_AUTO_DATA_TEST_CASE_WITH_PARAMS( test_name, dataset, sample ) \
/**/
#if BOOST_PP_VARIADICS_MSVC
#define BOOST_AUTO_DATA_TEST_CASE( ... ) \
BOOST_PP_CAT( \
BOOST_PP_IIF(BOOST_PP_EQUAL(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__),2), \
BOOST_AUTO_DATA_TEST_CASE_NO_PARAMS, \
BOOST_AUTO_DATA_TEST_CASE_WITH_PARAMS) (__VA_ARGS__), ) \
/**/
#else
#define BOOST_AUTO_DATA_TEST_CASE( ... ) \
BOOST_PP_IIF(BOOST_PP_EQUAL(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__),2), \
BOOST_AUTO_DATA_TEST_CASE_NO_PARAMS, \
BOOST_AUTO_DATA_TEST_CASE_WITH_PARAMS) (__VA_ARGS__) \
/**/
#endif
Example of BOOST_DATA_TEST_CASE usage:
#include <boost/range/iterator_range.hpp>
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/operations.hpp>
struct fixure
{
fixure() :
_Mydir(boost::filesystem::temp_directory_path() / boost::filesystem::unique_path("test-%%%%-%%%%-%%%%-%%%%"))
{
create_directory(_Mydir);
}
~fixure()
{
_TRY_BEGIN
remove_all(_Mydir);
_CATCH_ALL
_CATCH_END
}
boost::filesystem::path const _Mydir;
};
BOOST_FIXTURE_TEST_SUITE(suite, fixure)
namespace {
std::array<char const *, 4> const _Ourdata = { "A", "B", "C", "D" };
}
BOOST_AUTO_DATA_TEST_CASE(test, _Ourdata, _Str)
{
BOOST_REQUIRE(_Str);
BOOST_REQUIRE(is_directory(_Mydir));
auto const _File = _Mydir / _Str;
BOOST_TEST_MESSAGE(_File);
std::fstream _Stream;
_Stream.open(_File.c_str(), std::ios::out);
_Stream << _Str;
_Stream.close();
BOOST_REQUIRE(is_regular_file(_File));
}
BOOST_AUTO_TEST_SUITE_END()
Output in test_suite mode:
Running 4 test cases...
Entering test module "example"
Entering test suite "suite"
Entering test case "test"
"C:\Users\XXX\AppData\Local\Temp\test-4445-a983-8ba6-09ef\A"
Failure occurred in a following context:
_Str = A;
Leaving test case "test"; testing time: 17ms
Entering test case "test"
"C:\Users\XXX\AppData\Local\Temp\test-d4c4-c5f6-6154-7200\B"
Failure occurred in a following context:
_Str = B;
Leaving test case "test"; testing time: 10ms
Entering test case "test"
"C:\Users\XXX\AppData\Local\Temp\test-9f96-4f2c-b132-c541\C"
Failure occurred in a following context:
_Str = C;
Leaving test case "test"; testing time: 9ms
Entering test case "test"
"C:\Users\XXX\AppData\Local\Temp\test-f0cf-962c-aed3-1cf8\D"
Failure occurred in a following context:
_Str = D;
Leaving test case "test"; testing time: 10ms
Leaving test suite "suite"; testing time: 61ms
Leaving test module "example"; testing time: 76ms
*** No errors detected
Update: Test suite was updated to std::array<> using

Answer 1

As of Boost 1.62, you can use BOOST_DATA_TEST_CASE_F for this:
Declares and registers a data-driven test case, using a particular dataset and a fixture.
BOOST_DATA_TEST_CASE_F(my_fixture, test_case_name, dataset, var1, var2..., varN)
Reference:
https://www.boost.org/doc/libs/1_62_0/libs/test/doc/html/boost_test/utf_reference/test_org_reference/test_org_boost_test_dataset_fixture.html