ParticleMatcher.h

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#pragma once
 
#include <gmock/gmock.h>
#include <gtest/gtest.h>
 
#include "autopas/utils/ArrayMath.h"
#include "autopas/utils/Math.h"
 
bool equalParticles(const auto &lhs, const auto &rhs) {
  return lhs.getR() == rhs.getR() && lhs.getV() == rhs.getV() && lhs.getF() == rhs.getF() && lhs.getID() == rhs.getID();
}
 
 
MATCHER(ParticleEq, "Comparing if two particles are strictly equal to each other") {
  const auto &lhs = std::get<0>(arg);
  const auto &rhs = std::get<1>(arg);
 
  return lhs.getR() == rhs.getR() && lhs.getV() == rhs.getV() && lhs.getF() == rhs.getF() && lhs.getID() == rhs.getID();
}
 
bool almostEqualParticles(const auto &lhs, const auto &rhs,
                          double epsilon = autopas::utils::Math::EPSILON_RELATIVE_EQUALITY) {
  return autopas::utils::ArrayMath::isNearRel(lhs.getR(), rhs.getR(), epsilon) &&
         autopas::utils::ArrayMath::isNearRel(lhs.getV(), rhs.getV(), epsilon) &&
         autopas::utils::ArrayMath::isNearRel(lhs.getF(), rhs.getF(), epsilon) && lhs.getTypeId() == rhs.getTypeId();
}
 
 
MATCHER_P(ParticleAlmostEq, epsilon,
          "Comparing if two particles are almost equal to each other given a relative epsilon") {
  const auto &lhs = std::get<0>(arg);
  const auto &rhs = std::get<1>(arg);
  return almostEqualParticles(lhs, rhs, epsilon);
}
 
bool almostEqualParticlesUlps(const auto &lhs, const auto &rhs,
                              unsigned int ulpDistance = autopas::utils::Math::MAX_ULP_DISTANCE) {
  return autopas::utils::ArrayMath::isInUlp(lhs.getR(), rhs.getR(), ulpDistance) &&
         autopas::utils::ArrayMath::isInUlp(lhs.getV(), rhs.getV(), ulpDistance) &&
         autopas::utils::ArrayMath::isInUlp(lhs.getF(), rhs.getF(), ulpDistance) && lhs.getTypeId() == rhs.getTypeId();
}
 
 
MATCHER_P(ParticleUlpsEq, ulpDistance,
          "Comparing if two particles are almost equal to each other given an ULP distance") {
  const auto &lhs = std::get<0>(arg);
  const auto &rhs = std::get<1>(arg);
  return almostEqualParticlesUlps(lhs, rhs, ulpDistance);
}