Add start of test for Material, and complete test for Element

GeoModelCore/GeoModelKernel/tests/testGeoElement.cxx

+/*
+  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
+*/
+
+
+#include "GeoModelKernel/GeoElement.h"
+#include <gtest/gtest.h>
+
+class SampleElement{
+  private:
+    const std::string m_name{"Rhodium"};
+    const std::string m_symbol{"Rh"};
+    const double m_Z{45.};
+    const double m_A{102.90549*GeoModelKernelUnits::gram/GeoModelKernelUnits::mole};
+    GeoElement * m_ptr{};
+  public:
+    GeoElement * ptr() const {return m_ptr;}
+    SampleElement():m_ptr(new GeoElement(m_name, m_symbol, m_Z, m_A)){
+      m_ptr->ref();
+    }
+    ~SampleElement(){m_ptr->unref();}
+};
+
+
+TEST(GeoElement, CanBeConstructedOnHeap) {
+  GeoElement * pG{};
+  const std::string name{"Rhodium"};
+  const std::string symbol{"Rh"};
+  const double Z{45.};
+  const double A{102.90549};
+  EXPECT_NO_THROW(pG = new GeoElement(name, symbol, Z, A));
+  pG->ref();
+  pG->unref(); //should be destroyed here
+}
+
+TEST(GeoElement,CalculatesNCorrectly){
+  SampleElement rhodium;
+  const auto p = rhodium.ptr();
+  EXPECT_EQ(p->getN(), 102.90549);
+}
+
+TEST(GeoElement,GivesCorrectName){
+  SampleElement rhodium;
+  const auto p = rhodium.ptr();
+  EXPECT_EQ(p->getName(),"Rhodium");
+}
+
+TEST(GeoElement,GivesCorrectSymbol){
+  SampleElement rhodium;
+  const auto p = rhodium.ptr();
+  EXPECT_EQ(p->getSymbol(),"Rh");
+}
+
+TEST(GeoElement,GivesCorrectZValue){
+  SampleElement rhodium;
+  const auto p = rhodium.ptr();
+  EXPECT_EQ(p->getZ(),45);
+}
+TEST(GeoElement,GivesCorrectAverageAtomicMass){
+  SampleElement rhodium;
+  const auto p = rhodium.ptr();
+  EXPECT_EQ(p->getA(),102.90549*GeoModelKernelUnits::gram/GeoModelKernelUnits::mole);
+}
+
+TEST(GeoElement,GivesCorrectRadiationLength){
+  SampleElement rhodium;
+  const auto p = rhodium.ptr();
+  EXPECT_EQ(p->getRadTsai(),1.8442455962801794e-21);
+}
+
+TEST(GeoElement,EqualityOperator){
+  const std::string name{"Rhodium"};
+  const std::string symbol{"Rh"};
+  const double Z{45.};
+  const double A{102.90549*GeoModelKernelUnits::gram/GeoModelKernelUnits::mole};
+  auto pG = new GeoElement(name, symbol, Z, A);
+  SampleElement rhodium;
+  ASSERT_TRUE(*pG == *(rhodium.ptr()));
+}
+
+TEST(GeoElement,InequalityOperator){
+  const std::string name{"Rhodium"};
+  const std::string symbol{"Rh"};
+  const double Z{45.};
+  //alter A value _slightly_
+  const double A{102.91*GeoModelKernelUnits::gram/GeoModelKernelUnits::mole};
+  auto pG = new GeoElement(name, symbol, Z, A);
+  SampleElement rhodium;
+  ASSERT_TRUE(*pG != *(rhodium.ptr()));
+  pG->ref();
+  pG->unref(); //should be destroyed here
+  
+}
+