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descriptor_test.cc
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descriptor_test.cc
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#include "codec.h"
#include "query.pb.h"
#include <iostream>
#include <typeinfo>
#include <assert.h>
#include <stdio.h>
using std::cout;
using std::endl;
template<typename T>
void testDescriptor()
{
std::string type_name = T::descriptor()->full_name();
cout << type_name << endl;
const google::protobuf::Descriptor* descriptor =
google::protobuf::DescriptorPool::generated_pool()->FindMessageTypeByName(type_name);
assert(descriptor == T::descriptor());
cout << "FindMessageTypeByName() = " << descriptor << endl;
cout << "T::descriptor() = " << T::descriptor() << endl;
cout << endl;
const google::protobuf::Message* prototype =
google::protobuf::MessageFactory::generated_factory()->GetPrototype(descriptor);
assert(prototype == &T::default_instance());
cout << "GetPrototype() = " << prototype << endl;
cout << "T::default_instance() = " << &T::default_instance() << endl;
cout << endl;
T* new_obj = dynamic_cast<T*>(prototype->New());
assert(new_obj != NULL);
assert(new_obj != prototype);
assert(typeid(*new_obj) == typeid(T::default_instance()));
cout << "prototype->New() = " << new_obj << endl;
cout << endl;
delete new_obj;
}
int main()
{
GOOGLE_PROTOBUF_VERIFY_VERSION;
testDescriptor<muduo::Query>();
testDescriptor<muduo::Answer>();
google::protobuf::Message* newQuery = createMessage("muduo.Query");
assert(newQuery != NULL);
assert(typeid(*newQuery) == typeid(muduo::Query::default_instance()));
cout << "createMessage(\"muduo.Query\") = " << newQuery << endl;
google::protobuf::Message* newAnswer = createMessage("muduo.Answer");
assert(newAnswer != NULL);
assert(typeid(*newAnswer) == typeid(muduo::Answer::default_instance()));
cout << "createMessage(\"muduo.Answer\") = " << newAnswer << endl;
delete newQuery;
delete newAnswer;
puts("All pass!!!");
google::protobuf::ShutdownProtobufLibrary();
}