Squashed 'third_party/ceres/' content from commit e51e9b4
Change-Id: I763587619d57e594d3fa158dc3a7fe0b89a1743b
git-subtree-dir: third_party/ceres
git-subtree-split: e51e9b46f6ca88ab8b2266d0e362771db6d98067
diff --git a/internal/ceres/parameter_dims_test.cc b/internal/ceres/parameter_dims_test.cc
new file mode 100644
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+++ b/internal/ceres/parameter_dims_test.cc
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+//
+// * Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors may be
+// used to endorse or promote products derived from this software without
+// specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: jodebo_beck@gmx.de (Johannes Beck)
+
+#include "ceres/internal/parameter_dims.h"
+
+#include <gtest/gtest.h>
+#include <type_traits>
+
+namespace ceres {
+namespace internal {
+
+// Is valid parameter dims unit test
+static_assert(IsValidParameterDimensionSequence(integer_sequence<int>()) ==
+ true,
+ "Unit test of is valid parameter dimension sequence failed.");
+static_assert(
+ IsValidParameterDimensionSequence(integer_sequence<int, 2, 1>()) == true,
+ "Unit test of is valid parameter dimension sequence failed.");
+static_assert(
+ IsValidParameterDimensionSequence(integer_sequence<int, 0, 1>()) == false,
+ "Unit test of is valid parameter dimension sequence failed.");
+static_assert(
+ IsValidParameterDimensionSequence(integer_sequence<int, 3, 0>()) == false,
+ "Unit test of is valid parameter dimension sequence failed.");
+
+// Static parameter dims unit test
+static_assert(
+ std::is_same<StaticParameterDims<4, 2, 1>::Parameters,
+ 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