HippoMocks嘲笑ref的返回值 [英] HippoMocks mocking return values by ref

问题描述

class IEmployeeServiceProxy
{
public:
    virtual ~IEmployeeServiceProxy() { }
    virtual void AddEmployee(const Employee&) = 0;
    virtual int GetEmployees(std::vector<Employee>&) = 0;
};

struct Employee
{
    boost::uuids::uuid Id;
    std::string Name;
};

m_Mocks.ExpectCall(m_EmpSvcMock.get(), IEmployeeServiceProxy::GetEmployees).Return???;

如何模拟它，以便它将通过参数返回一个std :: vector int（这是方法的返回类型）？

How do I mock it so that it'll return a std::vector via the argument instead of int (which is the return type of the method)?

此外，如果有多于一个参数的参数呢？

Also, what if there is more than 1 ref argument?

推荐答案

你必须自己提供引用的对象，确保mock使用 with 它传递一个函数到 Do ，这也提供了返回值。它有多少参考参数无关紧要。示例：

you have to provide the object for the reference yourself, make sure the mock uses it using With and you can alter it passing a function to Do, which also provides the return value. It does not matter how many reference arguments there are. Example:

int AddSomeEmployees( std::vector< Employee >& v )
{
  v.push_back( Employee() );
  return 0;
}

  //test code
std::vector< int > arg;

mocks.ExpectCall( empSvcMock, IEmployeeServiceProxy::GetEmployees ).With( arg ).Do( AddSomeEmployees );

请注意， Do 函数，还有std :: function，lambdas等。

Note that Do can take any kind of function, also std::function, lambdas etc.

这篇关于HippoMocks嘲笑ref的返回值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！