src/gromacs/mdspan/tests/layouts.cpp

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  35 /*! \internal \file
  36  * \brief Testing gmx::extents.
  37  *
  38  * \author Christian Trott <crtrott@sandia.gov>
  39  * \author David Hollman <dshollm@sandia.gov>
  40  * \author Christian Blau <cblau@gwdg.de>
  41  */
  42 #include "gmxpre.h"
  43
  44 #include "gromacs/mdspan/layouts.h"
  45
  46 #include <gtest/gtest.h>
  47
  48 #include "gromacs/mdspan/extents.h"
  49
  50 namespace gmx
  51 {
  52
  53 template<class Layout, ptrdiff_t... E_STATIC>
  54 struct LayoutTests
  55 {
  56
  57     typedef Layout                                          layout_type;
  58     typedef extents<E_STATIC...>                            extents_type;
  59     typedef typename Layout::template mapping<extents_type> mapping_type;
  60
  61     mapping_type my_mapping_explicit, my_mapping_copy;
  62
  63     template<class... E>
  64     LayoutTests(E... e)
  65     {
  66         my_mapping_explicit = mapping_type(extents_type(e...));
  67         my_mapping_copy     = mapping_type(my_mapping_explicit);
  68     }
  69
  70     void check_rank(ptrdiff_t r)
  71     {
  72         EXPECT_EQ(my_mapping_explicit.extents().rank(), r);
  73         EXPECT_EQ(my_mapping_copy.extents().rank(), r);
  74     }
  75     void check_rank_dynamic(ptrdiff_t r)
  76     {
  77         EXPECT_EQ(my_mapping_explicit.extents().rank_dynamic(), r);
  78         EXPECT_EQ(my_mapping_copy.extents().rank_dynamic(), r);
  79     }
  80     template<class... E>
  81     void check_extents(E... e)
  82     {
  83         std::array<ptrdiff_t, extents_type::rank()> a = { { e... } };
  84         for (size_t r = 0; r < extents_type::rank(); r++)
  85         {
  86             EXPECT_EQ(my_mapping_explicit.extents().extent(r), a[r]);
  87             EXPECT_EQ(my_mapping_copy.extents().extent(r), a[r]);
  88         }
  89     }
  90     template<class... E>
  91     void check_strides(E... e)
  92     {
  93         std::array<ptrdiff_t, extents_type::rank()> a = { { e... } };
  94         for (size_t r = 0; r < extents_type::rank(); r++)
  95         {
  96             EXPECT_EQ(my_mapping_explicit.stride(r), a[r]);
  97             EXPECT_EQ(my_mapping_copy.stride(r), a[r]);
  98         }
  99     }
 100     void check_required_span_size(ptrdiff_t size)
 101     {
 102         EXPECT_EQ(my_mapping_explicit.required_span_size(), size);
 103         EXPECT_EQ(my_mapping_copy.required_span_size(), size);
 104     }
 105
 106     void check_properties(bool always_unique,
 107                           bool always_contiguous,
 108                           bool always_strided,
 109                           bool unique,
 110                           bool contiguous,
 111                           bool strided)
 112     {
 113         EXPECT_EQ(my_mapping_explicit.is_always_unique() ? 1 : 0, always_unique ? 1 : 0);
 114         EXPECT_EQ(my_mapping_explicit.is_always_contiguous() ? 1 : 0, always_contiguous ? 1 : 0);
 115         EXPECT_EQ(my_mapping_explicit.is_always_strided() ? 1 : 0, always_strided ? 1 : 0);
 116         EXPECT_EQ(my_mapping_explicit.is_unique() ? 1 : 0, unique ? 1 : 0);
 117         EXPECT_EQ(my_mapping_explicit.is_contiguous() ? 1 : 0, contiguous ? 1 : 0);
 118         EXPECT_EQ(my_mapping_explicit.is_strided() ? 1 : 0, strided ? 1 : 0);
 119         EXPECT_EQ(my_mapping_copy.is_always_unique() ? 1 : 0, always_unique ? 1 : 0);
 120         EXPECT_EQ(my_mapping_copy.is_always_contiguous() ? 1 : 0, always_contiguous ? 1 : 0);
 121         EXPECT_EQ(my_mapping_copy.is_always_strided() ? 1 : 0, always_strided ? 1 : 0);
 122         EXPECT_EQ(my_mapping_copy.is_unique() ? 1 : 0, unique ? 1 : 0);
 123         EXPECT_EQ(my_mapping_copy.is_contiguous() ? 1 : 0, contiguous ? 1 : 0);
 124         EXPECT_EQ(my_mapping_copy.is_strided() ? 1 : 0, strided ? 1 : 0);
 125     }
 126
 127     template<class... E>
 128     void check_operator(ptrdiff_t offset, E... e)
 129     {
 130         EXPECT_EQ(my_mapping_explicit(e...), offset);
 131         EXPECT_EQ(my_mapping_copy(e...), offset);
 132     }
 133 };
 134
 135 TEST(LayoutTests, LayoutRightConstruction)
 136 {
 137     LayoutTests<layout_right, 5, dynamic_extent, 3, dynamic_extent, 1> test(4, 2);
 138
 139     test.check_rank(5);
 140     test.check_rank_dynamic(2);
 141     test.check_extents(5, 4, 3, 2, 1);
 142     test.check_strides(24, 6, 2, 1, 1);
 143 }
 144
 145 TEST(LayoutTests, LayoutRightProperties)
 146 {
 147     LayoutTests<layout_right, 5, dynamic_extent, 3, dynamic_extent, 1> test(4, 2);
 148
 149     test.check_properties(true, true, true, true, true, true);
 150 }
 151
 152 TEST(LayoutTests, LayoutRightOperator)
 153 {
 154     LayoutTests<layout_right, 5, dynamic_extent, 3, dynamic_extent, 1> test(4, 2);
 155
 156     test.check_operator(107, 4, 1, 2, 1, 0);
 157     test.check_operator(0, 0, 0, 0, 0, 0);
 158 }
 159
 160 } // namespace gmx