unit testing - How to mock a method call of a struct in test case at go

Question

Here is the sample code for the struct and its method

type A struct {}

func (a *A) perfom(string){
...
...
..
} 

Then i want to call the method from the function invoke() residing outside the package, sample code

var s := A{}
func invoke(url string){
   out := s.perfom(url)
   ...
   ...
} 

I want to write the test case for the function invoke by mocking the perform method of A.

In java, we have mockito, jmock framework to stub method calls.

Is there any way in go, we can mock the method call of the struct without introducing interfaces in source code ?

Answer 1

Waitting for answers