谷歌测试框架参数化夹具答案

【问题标题】：Google test framework parametrize fixtures谷歌测试框架参数化夹具
【发布时间】：2012-05-02 16:46:59
【问题描述】：

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？

【问题讨论】：

标签： c++ unit-testing googletest

【解决方案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，然后派生出来。

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;

【讨论】：