Common/test/test_catch2_DictionaryTools.cpp

0001 // Test of the DictionaryTools functions.
0002
0003 #include "DataFormats/Common/interface/Wrapper.h"
0004 #include "FWCore/Utilities/interface/TypeDemangler.h"
0005 #include "FWCore/Utilities/interface/TypeID.h"
0006 #include "FWCore/Reflection/interface/TypeWithDict.h"
0007 #include "catch.hpp"
0008 #include <typeinfo>
0009 #include <map>
0010 #include <vector>
0011 #include <string>
0012
0013 // Helper templates for demangling checks
0014 namespace {
0015   template <typename T>
0016   void checkIt() {
0017     edm::TypeWithDict type(typeid(T));
0018     if (bool(type)) {
0019       std::string demangledName(edm::typeDemangle(typeid(T).name()));
0020       REQUIRE(type.name() == demangledName);
0021       edm::TypeID tid(typeid(T));
0022       REQUIRE(tid.className() == demangledName);
0023       edm::TypeWithDict typeFromName = edm::TypeWithDict::byName(demangledName);
0024       REQUIRE(typeFromName.name() == demangledName);
0025       if (type.isClass()) {
0026         edm::TypeID tidFromName(typeFromName.typeInfo());
0027         REQUIRE(tidFromName.className() == demangledName);
0028       }
0029     }
0030   }
0031   template <typename T>
0032   void checkDemangling() {
0033     checkIt<std::vector<T> >();
0034     checkIt<edm::Wrapper<T> >();
0035     checkIt<edm::Wrapper<std::vector<T> > >();
0036     checkIt<T>();
0037     checkIt<T[1]>();
0038   }
0039 }  // namespace
0040
0041 TEST_CASE("DictionaryTools functions", "[DictionaryTools]") {
0042   SECTION("default_is_invalid") {
0043     edm::TypeWithDict t;
0044     REQUIRE(!t);
0045   }
0046
0047   SECTION("no_dictionary_is_invalid") {
0048     edm::TypeWithDict t(edm::TypeWithDict::byName("ThereIsNoTypeWithThisName"));
0049     REQUIRE(!t);
0050   }
0051
0052   SECTION("not_a_template_instance") {
0053     edm::TypeWithDict not_a_template(edm::TypeWithDict::byName("double"));
0054     REQUIRE(not_a_template);
0055     std::string nonesuch(not_a_template.templateName());
0056     REQUIRE(nonesuch.empty());
0057   }
0058
0059   SECTION("demangling") {
0060     checkDemangling<int>();
0061     checkDemangling<unsigned int>();
0062     checkDemangling<unsigned long>();
0063     checkDemangling<long>();
0064     checkDemangling<unsigned long>();
0065     checkDemangling<long long>();
0066     checkDemangling<unsigned long long>();
0067     checkDemangling<short>();
0068     checkDemangling<unsigned short>();
0069     checkDemangling<char>();
0070     checkDemangling<unsigned char>();
0071     checkDemangling<float>();
0072     checkDemangling<double>();
0073     checkDemangling<bool>();
0074     checkDemangling<std::string>();
0075   }
0076 }