use super::*;
use burn_tensor::Tolerance;
use burn_tensor::{Distribution, Int, Tensor};

#[test]
fn select_should_work_with_multiple_workgroups() {
    let tensor =
        Tensor::<TestBackend, 2>::random([6, 256], Distribution::Default, &Default::default());
    let indices = Tensor::<TestBackend, 1, Int>::arange(0..100, &Default::default());
    let tensor_ref =
        Tensor::<ReferenceBackend, 2>::from_data(tensor.to_data(), &Default::default());
    let indices_ref =
        Tensor::<ReferenceBackend, 1, Int>::from_data(indices.to_data(), &Default::default());

    let actual = tensor.select(1, indices);
    let expected = tensor_ref.select(1, indices_ref);

    expected
        .into_data()
        .assert_approx_eq::<FloatElem>(&actual.into_data(), Tolerance::default());
}