scatt/tests/test_bulk_sphere.cc

#include "gtest/gtest.h"
#include "../src/nmie-impl.hpp"
TEST(BulkSphere, HandlesInput) {
  nmie::MultiLayerMie<double> nmie;
  // A list of tests for a bulk sphere from
  // Hong Du, "Mie-scattering calculation," Appl. Opt. 43, 1951-1956 (2004)
  // table 1: sphere size and refractive index
  // followed by resulting extinction and scattering efficiencies
  std::vector< std::tuple< double, std::complex<double>, double, double, char > >
      parameters_and_results
      {
          // x, {Re(m), Im(m)}, Qext, Qsca, test_name
          {0.099, {0.75,0}, 7.417859e-06, 7.417859e-06, 'a'},
          {0.101, {0.75,0}, 8.033538e-06, 8.033538e-06, 'b'},
          {10,    {0.75,0},     2.232265, 2.232265, 'c'},
          {1000,  {0.75,0},     1.997908, 1.997908, 'd'},
//          {100,   {1.33,-1e-5}, 2.101321, 2.096594, 'e'},
//          {10000, {1.33,-1e-5}, 2.004089, 1.723857, 'f'},
//          {0.055, {1.5, -1},    0.101491, 1.131687e-05, 'g'},
//          {0.056, {1.5, -1},   0.1033467, 1.216311e-05, 'h'},
//          {100,   {1.5, -1},    2.097502, 1.283697, 'i'},
//          {10000, {1.5, -1},    2.004368, 1.236574, 'j'},
//          {1,     {10,  -10},   2.532993, 2.049405, 'k'},
//          {100,   {10,  -10,},  2.071124, 1.836785, 'l'},
//          {10000, {10,  -10},   2.005914, 1.795393, 'm'},
      };
  for (const auto &data : parameters_and_results) {
    nmie.SetLayersSize({std::get<0>(data)});
    nmie.SetLayersIndex({std::get<1>(data)});
    nmie.RunMieCalculation();
    double Qext = nmie.GetQext();
    double Qsca = nmie.GetQsca();
    EXPECT_FLOAT_EQ(std::get<2>(data), Qext)
              << "Extinction of the bulk sphere, test case:" << std::get<4>(data);
    EXPECT_FLOAT_EQ(std::get<3>(data), Qsca)
              << "Scattering of the bulk sphere, test case:" << std::get<4>(data);
  }

}
int main(int argc, char **argv) {
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}