src/gromacs/mdspan/tests/extensions.cpp

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  35 /*! \internal \file
  36  * \brief
  37  * Tests gromacs extensions to mdspan proposal
  38  *
  39  * \author Christian Blau <cblau@gwdg.de>
  40  * \ingroup module_mdspan
  41  */
  42 #include "gmxpre.h"
  43
  44 #include "gromacs/mdspan/extensions.h"
  45
  46 #include <string>
  47 #include <vector>
  48
  49 #include <gmock/gmock.h>
  50 #include <gtest/gtest.h>
  51
  52 #include "gromacs/mdspan/mdspan.h"
  53
  54 #include "testutils/testasserts.h"
  55
  56 namespace gmx
  57 {
  58
  59 TEST(MdSpanExtension, SlicingAllStatic)
  60 {
  61     std::array<int, 2 * 3>           data = { 1, 2, 3, 4, 5, 6 };
  62     basic_mdspan<int, extents<3, 2>> span{ data.data() };
  63     EXPECT_EQ(span[0][0], 1);
  64     EXPECT_EQ(span[0][1], 2);
  65
  66     EXPECT_EQ(span[1][0], 3);
  67     EXPECT_EQ(span[1][1], 4);
  68
  69     EXPECT_EQ(span[2][0], 5);
  70     EXPECT_EQ(span[2][1], 6);
  71 }
  72
  73 TEST(MdSpanExtension, SlicingDynamic)
  74 {
  75     std::array<int, 2 * 3>                                     data = { 1, 2, 3, 4, 5, 6 };
  76     basic_mdspan<int, extents<dynamic_extent, dynamic_extent>> span{ data.data(), 2, 2 };
  77
  78     EXPECT_EQ(span[0][0], 1);
  79     EXPECT_EQ(span[0][1], 2);
  80
  81     EXPECT_EQ(span[1][0], 3);
  82     EXPECT_EQ(span[1][1], 4);
  83
  84     EXPECT_EQ(span[2][0], 5);
  85     EXPECT_EQ(span[2][1], 6);
  86 }
  87
  88 TEST(MdSpanExtension, SlicingAllStatic3D)
  89 {
  90     std::array<int, 2 * 2 * 2>          data = { 1, 2, 3, 4, 5, 6, 7, 8 };
  91     basic_mdspan<int, extents<2, 2, 2>> span{ data.data() };
  92     EXPECT_EQ(span[0][0][0], 1);
  93     EXPECT_EQ(span[0][0][1], 2);
  94
  95     EXPECT_EQ(span[0][1][0], 3);
  96     EXPECT_EQ(span[0][1][1], 4);
  97
  98     EXPECT_EQ(span[1][0][0], 5);
  99     EXPECT_EQ(span[1][0][1], 6);
 100
 101     EXPECT_EQ(span[1][1][0], 7);
 102     EXPECT_EQ(span[1][1][1], 8);
 103 }
 104
 105 TEST(MdSpanExtension, SlicingEqualsView3D)
 106 {
 107     std::array<int, 2 * 2 * 2>          data = { 1, 2, 3, 4, 5, 6, 7, 8 };
 108     basic_mdspan<int, extents<2, 2, 2>> span{ data.data() };
 109     EXPECT_EQ(span[0][0][0], span(0, 0, 0));
 110     EXPECT_EQ(span[0][0][1], span(0, 0, 1));
 111     EXPECT_EQ(span[0][1][0], span(0, 1, 0));
 112     EXPECT_EQ(span[0][1][1], span(0, 1, 1));
 113     EXPECT_EQ(span[1][0][0], span(1, 0, 0));
 114     EXPECT_EQ(span[1][0][1], span(1, 0, 1));
 115     EXPECT_EQ(span[1][1][0], span(1, 1, 0));
 116     EXPECT_EQ(span[1][1][1], span(1, 1, 1));
 117 }
 118
 119 TEST(MdSpanExtension, additionWorks)
 120 {
 121     std::array<int, 2 * 2 * 2>          arr1 = { { -4, -3, -2, -1, 0, 1, 2, 3 } };
 122     std::array<int, 2 * 2 * 2>          arr2 = { { 1, 1, 1, 1, 1, 1, 1, 1 } };
 123     basic_mdspan<int, extents<2, 2, 2>> span1{ arr1.data() };
 124     basic_mdspan<int, extents<2, 2, 2>> span2{ arr2.data() };
 125
 126     auto result = addElementwise(span1, span2);
 127     EXPECT_EQ(result[0][0][1], -2);
 128     EXPECT_EQ(result[0][1][0], -1);
 129     EXPECT_EQ(result[1][0][0], 1);
 130 }
 131
 132 TEST(MdSpanExtension, subtractionWorks)
 133 {
 134     std::array<int, 2 * 2 * 2>          arr1 = { { -4, -3, -2, -1, 0, 1, 2, 3 } };
 135     std::array<int, 2 * 2 * 2>          arr2 = { { 1, 1, 1, 1, 1, 1, 1, 1 } };
 136     basic_mdspan<int, extents<2, 2, 2>> span1{ arr1.data() };
 137     basic_mdspan<int, extents<2, 2, 2>> span2{ arr2.data() };
 138
 139     auto result = subtractElementwise(span1, span2);
 140     EXPECT_EQ(result[0][0][1], -4);
 141     EXPECT_EQ(result[0][1][0], -3);
 142     EXPECT_EQ(result[1][0][0], -1);
 143 }
 144
 145 TEST(MdSpanExtension, multiplicationWorks)
 146 {
 147     std::array<int, 2 * 2 * 2>          arr1 = { { -4, -3, -2, -1, 0, 1, 2, 3 } };
 148     std::array<int, 2 * 2 * 2>          arr2 = { {
 149             2,
 150             2,
 151             2,
 152             2,
 153             2,
 154             2,
 155             2,
 156     } };
 157     basic_mdspan<int, extents<2, 2, 2>> span1{ arr1.data() };
 158     basic_mdspan<int, extents<2, 2, 2>> span2{ arr2.data() };
 159
 160     auto result = multiplyElementwise(span1, span2);
 161     EXPECT_EQ(result[0][0][1], -6);
 162     EXPECT_EQ(result[0][1][0], -4);
 163     EXPECT_EQ(result[1][0][0], 0);
 164 }
 165
 166 TEST(MdSpanExtension, divisionWorks)
 167 {
 168     std::array<float, 2 * 2 * 2>          arr1 = { { -4, -3, -2, -1, 0, 1, 2, 3 } };
 169     std::array<float, 2 * 2 * 2>          arr2 = { {
 170             2,
 171             2,
 172             2,
 173             2,
 174             2,
 175             2,
 176             2,
 177             2,
 178     } };
 179     basic_mdspan<float, extents<2, 2, 2>> span1{ arr1.data() };
 180     basic_mdspan<float, extents<2, 2, 2>> span2{ arr2.data() };
 181
 182     auto result = divideElementwise(span1, span2);
 183     EXPECT_EQ(result[0][0][1], -1.5);
 184     EXPECT_EQ(result[0][1][0], -1);
 185     EXPECT_EQ(result[1][0][0], 0);
 186 }
 187 } // namespace gmx