Function TEST

tests/cpp/data/test_iterative_dmatrix.cc:17–21

namespace xgboost::data {
TEST(IterativeDMatrix, Ref) {
  Context ctx;
  TestRefDMatrix<GHistIndexMatrix, NumpyArrayIterForTest>(
      &ctx, [&](GHistIndexMatrix const& page) { return page.cut; });
}

TEST(IterativeDMatrix, IsDense) {
  bst_bin_t n_bins = 16;