message: gpu transpose dense
diff: @@ -260,4 +260,19 @@ TEST_F(Dense, AdvancedApplyIsEquivalentToRef)
  }
  +TEST_F(Dense, IsTransposable)
  +{
  + set_up_apply_data();
  +
  + auto trans = x->transpose();
  + auto d_trans = dx->transpose();
  +
  +
  + auto trans_as_dense = static_cast<gko::matrix::Dense<> *>(trans.get());
  + auto d_trans_as_dense = static_cast<gko::matrix::Dense<> *>(d_trans.get());
  +
  + auto result = Mtx::create(ref);
  + result->copy_from(d_trans_as_dense);
  + ASSERT_MTX_NEAR(result, expected, 0);
  +}
  } // namespace
  