c++ - 谷歌测试框架参数化夹具

Question

我有一个问题。我使用以下结构作为夹具：

类 unvalidSDPTest : public ::testing::Test{
受保护：
    虚拟无效设置（）{
        标准：：字符串名称（“名称”）；
        服务器=新的 SipServer（名称）；
        std::ifstream 提供文件，答案文件；
        offerFile.open("unvalidOfferSDP.txt");
        answerFile.open("unvalidAnswerSDP.txt");
        标准：：字符串提供RawSDP，answerRawSDP；
        报价文件>>报价原始SDP；
        answerFile>>answerRawSDP；
        offerSDPSession = 服务器->MakeSDPSession( const_cast(offerRawSDP.c_str()) ) ;
        answerSDPSession = 服务器->MakeSDPSession( const_cast(answerRawSDP.c_str()) ) ;
    }
    虚拟 void TearDown(){
        删除服务器；
    }
    pjmedia_sdp_session *offerSDPSession, *answerSDPSession ;
    SipServer *服务器；
    SDPNeg 谈判者；
};

我想通过文件名参数化这个类。如何让它变得更好？

Answer 1

有很多方法可以做到这一点 - 我将向您展示两种：

方法一：创建一个带有虚函数的基类，然后从它派生。

class unvalidSDPTestBase : public ::testing::Test{
  virtual const char * offer_filename() const =0;
  virtual const char * answer_filename() const =0;
  protected:
    virtual void SetUp(){
        std::string Name("name");
        Server=new SipServer(Name);
        std::ifstream offerFile,answerFile;
        offerFile.open( offer_filename());
        answerFile.open(answer_filename());
        std::string offerRawSDP,answerRawSDP;
        offerFile>>offerRawSDP;
        answerFile>>answerRawSDP;
        offerSDPSession = Server->MakeSDPSession( const_cast(offerRawSDP.c_str()) ) ;
        answerSDPSession = Server->MakeSDPSession( const_cast(answerRawSDP.c_str()) ) ;
    }
    virtual void TearDown(){
        delete Server;
    }
    pjmedia_sdp_session *offerSDPSession, *answerSDPSession ;
    SipServer *Server;
    SDPNeg Negotiator;
 };

 class unvalidSPDTestBase: public unvalidSDPTestBase
 {
     virtual const char * offer_filename() const { return "..."; }
     virtual const char * answer_filename() const { return "..."; }
 }

方法2：使用诸如系统和模板之类的特征：

template<typename FILENAME_SOURCE>
class SDPTest : public ::testing::Test{
  protected:
    virtual void SetUp(){
        std::string Name("name");
        Server=new SipServer(Name);
        std::ifstream offerFile,answerFile;
        offerFile.open( FILENAME_SOURCE::offer_filename());
        answerFile.open( FILENAME_SOURCE::answer_filename());
        std::string offerRawSDP,answerRawSDP;
        offerFile>>offerRawSDP;
        answerFile>>answerRawSDP;
        offerSDPSession = Server->MakeSDPSession( const_cast(offerRawSDP.c_str()) ) ;
        answerSDPSession = Server->MakeSDPSession( const_cast(answerRawSDP.c_str()) ) ;
    }
    virtual void TearDown(){
        delete Server;
    }
    pjmedia_sdp_session *offerSDPSession, *answerSDPSession ;
    SipServer *Server;
    SDPNeg Negotiator;
 };

 struct InvalidFilenames
 {
   static const char * offer_filename()  { return "..."; }
   static const char * answer_filename() { return "..."; }
 };

 typedef SDPTest<InvalidFilenames> unvalidSDPTest;