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#include "cutlass_unit_test.h"

#include <cutlass/trace.h>
#include <cute/tensor.hpp>

TEST(CuTe_core, Compare_simple_2d_GenColMajor)
{
  using namespace cute;

  // Simple 2D layout
  auto layout = make_layout(make_shape(Int<3>{}, Int<5>{}), GenColMajor{});
  CUTLASS_TRACE_HOST("Layout: " << layout);

  for (int i = 0; i < size(layout); ++i) {
    auto coord_i = layout.get_hier_coord(i);

    CUTLASS_TRACE_HOST(i << ": " << coord_i);

    EXPECT_TRUE(elem_less(coord_i, shape(layout)));

    for (int j = 0; j < size(layout); ++j) {
      auto coord_j = layout.get_hier_coord(j);
      CUTLASS_TRACE_HOST("  " << j << ": " << coord_j);
      EXPECT_TRUE(elem_less(coord_j, shape(layout)));

      EXPECT_EQ((i < j), colex_less(coord_i,coord_j));
    }
  }
}


TEST(CuTe_core, Compare_simple_2d_GenRowMajor)
{
  using namespace cute;

  auto layout = make_layout(make_shape(Int<3>{}, Int<5>{}), GenRowMajor{});
  CUTLASS_TRACE_HOST("Layout: " << layout);

  for (int i = 0; i < size(layout); ++i) {
    auto coord_i = layout.get_hier_coord(i);
    CUTLASS_TRACE_HOST(i << ": " << coord_i);
    EXPECT_TRUE(elem_less(coord_i, shape(layout)));

    for (int j = 0; j < size(layout); ++j) {
      auto coord_j = layout.get_hier_coord(j);
      EXPECT_TRUE(elem_less(coord_j, shape(layout)));

      EXPECT_EQ((i < j), lex_less(coord_i,coord_j));
    }
  }
}


TEST(CuTe_core, Compare_simple_3d_GenColMajor)
{
  using namespace cute;

  auto layout = make_layout(make_shape(Int<2>{}, Int<3>{}, Int<5>{}), GenColMajor{});
  CUTLASS_TRACE_HOST("Layout: " << layout);

  for (int i = 0; i < size(layout); ++i) {
    auto coord_i = layout.get_hier_coord(i);
    CUTLASS_TRACE_HOST(i << ": " << coord_i);
    EXPECT_TRUE(elem_less(coord_i, shape(layout)));

    for (int j = 0; j < size(layout); ++j) {
      auto coord_j = layout.get_hier_coord(j);
      EXPECT_TRUE(elem_less(coord_j, shape(layout)));

      EXPECT_EQ((i < j), colex_less(coord_i,coord_j));
    }
  }
}


TEST(CuTe_core, Compare_simple_3d_GenRowMajor)
{
  using namespace cute;

  auto layout = make_layout(make_shape(Int<2>{}, Int<3>{}, Int<5>{}), GenRowMajor{});
  CUTLASS_TRACE_HOST("Layout: " << layout);

  for (int i = 0; i < size(layout); ++i) {
    auto coord_i = layout.get_hier_coord(i);
    CUTLASS_TRACE_HOST(i << ": " << coord_i);
    EXPECT_TRUE(elem_less(coord_i, shape(layout)));

    for (int j = 0; j < size(layout); ++j) {
      auto coord_j = layout.get_hier_coord(j);
      EXPECT_TRUE(elem_less(coord_j, shape(layout)));

      EXPECT_EQ((i < j), lex_less(coord_i,coord_j));
    }
  }
}


TEST(CuTe_core, Compare_hierarchical_3d_GenColMajor)
{
  using namespace cute;

  auto layout = make_layout(Shape<Shape<_3,_2>,Shape<_5,_2,_2>>{}, GenColMajor{});
  CUTLASS_TRACE_HOST("Layout: " << layout);

  for (int i = 0; i < size(layout); ++i) {
    auto coord_i = layout.get_hier_coord(i);
    CUTLASS_TRACE_HOST(i << ": " << coord_i);
    EXPECT_TRUE(elem_less(coord_i, shape(layout)));

    for (int j = 0; j < size(layout); ++j) {
      auto coord_j = layout.get_hier_coord(j);
      EXPECT_TRUE(elem_less(coord_j, shape(layout)));

      EXPECT_EQ((i < j), colex_less(coord_i,coord_j));
    }
  }
}

TEST(CuTe_core, Compare_hierarchical_3d_GenRowMajor)
{
  using namespace cute;
  auto layout = make_layout(Shape<Shape<_3,_2>,Shape<_5,_2,_2>>{}, GenRowMajor{});
  CUTLASS_TRACE_HOST("Layout: " << layout);

  for (int i = 0; i < size(layout); ++i) {
    auto coord_i = layout.get_hier_coord(i);
    CUTLASS_TRACE_HOST(i << ": " << coord_i);
    EXPECT_TRUE(elem_less(coord_i, shape(layout)));

    for (int j = 0; j < size(layout); ++j) {
      auto coord_j = layout.get_hier_coord(j);
      EXPECT_TRUE(elem_less(coord_j, shape(layout)));

      EXPECT_EQ((i < j), lex_less(coord_i,coord_j));
    }
  }
}