src/gromacs/compat/tests/mp11.cpp

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  35 #include "gmxpre.h"
  36
  37 #include "gromacs/compat/mp11.h"
  38
  39 #include <gtest/gtest.h>
  40
  41 // Defining some dummy functions to use later
  42
  43 namespace gmx
  44 {
  45 namespace compat
  46 {
  47 namespace test
  48 {
  49 enum class Options
  50 {
  51     Op0   = 0,
  52     Op1   = 1,
  53     Op2   = 2,
  54     Count = 3
  55 };
  56
  57 template<int i>
  58 static int testIncrement()
  59 {
  60     return i + 1;
  61 }
  62
  63 template<bool i>
  64 static bool testNot()
  65 {
  66     return !i;
  67 }
  68
  69 template<Options i, Options j>
  70 static int testEnumTwoIPlusJPlusK(int k)
  71 {
  72     return 2 * int(i) + int(j) + k;
  73 }
  74
  75 TEST(TemplateMPTest, MpWithIndexInt)
  76 {
  77     static constexpr int maxArgValue = 4;
  78     int inc_0 = mp_with_index<maxArgValue>(0, [](auto i) { return testIncrement<i>(); });
  79     EXPECT_EQ(inc_0, 1);
  80     int inc_3 = mp_with_index<maxArgValue>(3, [](auto i) { return testIncrement<i>(); });
  81     EXPECT_EQ(inc_3, 4);
  82 }
  83
  84 TEST(TemplateMPTest, MpWithIndexIntBad)
  85 {
  86     static constexpr int maxArgValue = 4;
  87     int                  i           = maxArgValue;
  88     // Function requirement: i < maxArgValue
  89     EXPECT_THROW(mp_with_index<maxArgValue>(i, [](auto i) { return testIncrement<i>(); }),
  90                  gmx::InternalError);
  91 }
  92
  93 TEST(TemplateMPTest, MpWithIndexBool)
  94 {
  95     bool not_true = mp_with_index<2>(size_t(true), [](auto i) { return testNot<i>(); });
  96     EXPECT_FALSE(not_true);
  97     bool not_false = mp_with_index<2>(size_t(false), [](auto i) { return testNot<i>(); });
  98     EXPECT_TRUE(not_false);
  99 }
 100
 101 TEST(TemplateMPTest, MpWithIndexEnum)
 102 {
 103     int five           = 5;
 104     int two1plus2plus5 = mp_with_index<static_cast<size_t>(Options::Count)>(
 105             static_cast<size_t>(Options::Op2), [=](auto i) {
 106                 return testEnumTwoIPlusJPlusK<Options::Op1, static_cast<Options>(size_t(i))>(five);
 107             });
 108     EXPECT_EQ(two1plus2plus5, 9);
 109 }
 110
 111 } // namespace test
 112 } // namespace compat
 113 } // namespace gmx