// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project

#ifndef TEST_BLOCK_SIZE_DEDUCTION_HPP
#define TEST_BLOCK_SIZE_DEDUCTION_HPP

#include <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_EXPERIMENTAL_CXX20_MODULES
import kokkos.core;
#else
#include <Kokkos_Core.hpp>
#endif
#include <gtest/gtest.h>

// NOTE kokkos/kokkos#3103 introduced a bug that was accidentally fixed in #3124
// The code below will do until we decide to test block size deduction more
// thoroughly

struct PoorMansLambda {
  template <typename MemberType>
  KOKKOS_FUNCTION void operator()(MemberType const&) const {}
};

template <typename ExecutionSpace>
void test_bug_pr_3103() {
  using Policy =
      Kokkos::TeamPolicy<ExecutionSpace, Kokkos::LaunchBounds<32, 1>>;
  int const league_size = 1;
  int const team_size   = std::min(
      32, Policy(league_size, Kokkos::AUTO)
              .team_size_max(PoorMansLambda{}, Kokkos::ParallelForTag{}));
  int const vector_length = 1;

  Kokkos::parallel_for(Policy(league_size, team_size, vector_length),
                       PoorMansLambda());
}

TEST(TEST_CATEGORY, test_block_deduction_bug_pr_3103) {
  test_bug_pr_3103<TEST_EXECSPACE>();
}

#endif
