tests/cpu/test_ranges.cpp

0001 /** TRACCC library, part of the ACTS project (R&D line)
0002  *
0003  * (c) 2023-2024 CERN for the benefit of the ACTS project
0004  *
0005  * Mozilla Public License Version 2.0
0006  */
0007
0008 // Project include(s).
0009 #include "traccc/definitions/common.hpp"
0010 #include "traccc/definitions/primitives.hpp"
0011 #include "traccc/utils/ranges.hpp"
0012
0013 // GTest include(s).
0014 #include <gtest/gtest.h>
0015
0016 using namespace traccc;
0017
0018 // Test eta_to_theta_range function
0019 TEST(ranges, eta_to_theta) {
0020   // Comparing with the values provided by
0021   // https://www.star.bnl.gov/~dmitry/calc2.html
0022   ASSERT_NEAR(eta_to_theta(2.3f), 11.451f * traccc::unit<scalar>::degree,
0023               1e-3f * traccc::unit<scalar>::degree);
0024   ASSERT_NEAR(eta_to_theta(-0.87f), 134.537f * traccc::unit<scalar>::degree,
0025               1e-3f * traccc::unit<scalar>::degree);
0026
0027   std::array<scalar, 2> eta_range{-2.44f, 3.13f};
0028   const auto theta_range = eta_to_theta_range(eta_range);
0029
0030   ASSERT_NEAR(theta_range[0], 5.007f * traccc::unit<scalar>::degree,
0031               1e-3f * traccc::unit<scalar>::degree);
0032   ASSERT_NEAR(theta_range[1], 170.037f * traccc::unit<scalar>::degree,
0033               1e-3f * traccc::unit<scalar>::degree);
0034 }
0035
0036 // Test theta_to_eta_range function
0037 TEST(ranges, theta_to_eta) {
0038   // Comparing with the values provided by
0039   // https://www.star.bnl.gov/~dmitry/calc2.html
0040   ASSERT_NEAR(theta_to_eta(132.8f * traccc::unit<scalar>::degree), -0.828f,
0041               1e-3f);
0042   ASSERT_NEAR(theta_to_eta(90.f * traccc::unit<scalar>::degree), 0.f, 1e-3f);
0043
0044   std::array<scalar, 2> theta_range{45.f * traccc::unit<scalar>::degree,
0045                                     175.f * traccc::unit<scalar>::degree};
0046   const auto eta_range = theta_to_eta_range(theta_range);
0047
0048   ASSERT_NEAR(eta_range[0], -3.131f, 1e-3f);
0049   ASSERT_NEAR(eta_range[1], 0.881f, 1e-3f);
0050 }