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//
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// Author: jodebo_beck@gmx.de (Johannes Beck)
#include "ceres/internal/parameter_dims.h"
#include <array>
#include <type_traits>
#include <utility>
#include "gtest/gtest.h"
namespace ceres {
namespace internal {
// Static parameter dims unit test
static_assert(
std::is_same<StaticParameterDims<4, 2, 1>::Parameters,
std::integer_sequence<int, 4, 2, 1>>::value == true,
"Unit test of type 'parameters' for static parameter dims failed.");
static_assert(StaticParameterDims<4, 2, 1>::kIsValid == true,
"Unit test of is valid for static parameter dims failed.");
static_assert(StaticParameterDims<4, 2, 1>::kIsDynamic == false,
"Unit test of is dynamic for static parameter dims failed.");
static_assert(StaticParameterDims<4, 2, 1>::kNumParameterBlocks == 3,
"Unit test of number of parameter blocks for static parameter "
"dims failed.");
static_assert(
StaticParameterDims<4, 2, 1>::kNumParameters == 7,
"Unit test of number of parameters for static parameter dims failed.");
// Dynamic parameter dims unit test
static_assert(DynamicParameterDims::kIsValid == true,
"Unit test of is valid for dynamic parameter dims failed.");
static_assert(DynamicParameterDims::kIsDynamic == true,
"Unit test of is dynamic for dynamic parameter dims failed.");
static_assert(DynamicParameterDims::kNumParameterBlocks == 0,
"Unit test of number if parameter blocks for dynamic parameter "
"dims failed.");
static_assert(
DynamicParameterDims::kNumParameters == 0,
"Unit test of number of parameters for dynamic parameter dims failed.");
TEST(ParameterDims, GetDims) {
constexpr int N0 = 3;
constexpr int N1 = 4;
constexpr int N2 = 2;
StaticParameterDims<N0, N1, N2> params;
EXPECT_EQ(N0, params.GetDim(0));
EXPECT_EQ(N1, params.GetDim(1));
EXPECT_EQ(N2, params.GetDim(2));
}
TEST(ParameterDims, GetUnpackedParameters) {
constexpr int N0 = 3;
constexpr int N1 = 4;
constexpr int N2 = 2;
using ParameterDims = StaticParameterDims<N0, N1, N2>;
std::array<double, ParameterDims::kNumParameters> packed_parameters{};
std::array<double*, 3> unpacked_parameters =
ParameterDims::GetUnpackedParameters(packed_parameters.data());
EXPECT_EQ(packed_parameters.data(), unpacked_parameters[0]);
EXPECT_EQ(packed_parameters.data() + N0, unpacked_parameters[1]);
EXPECT_EQ(packed_parameters.data() + N0 + N1, unpacked_parameters[2]);
}
} // namespace internal
} // namespace ceres