Pegomock unable to generate proper matchers for empty struct channels

[jpopadak]

Description When generating matchers for a given interface method using Pegomock, it fails to create proper matchers for the empty struct type: struct{}.

As a result, anything that passes around empty struct channels (for event purposes) has incorrect matchers created.

Steps to Reproduce Generate a mock and the matchers associated to this interface:

type MyInterf interface {
    MyFunc(stopChan <-chan struct{}) error
}

Note:

1. The filename of the matcher: recv_chan_of_struct{}.go
2. The output of the matchers which includes the {} of the empty struct in the names of the methods.

   
   // Code generated by pegomock. DO NOT EDIT.
   package matchers

import ( "reflect" "github.com/petergtz/pegomock"

)

func AnyRecvChanOfStruct{}() <-chan struct{} { pegomock.RegisterMatcher(pegomock.NewAnyMatcher(reflect.TypeOf((*(<-chan struct{}))(nil)).Elem())) var nullValue <-chan struct{} return nullValue }

func EqRecvChanOfStruct{}(value <-chan struct{}) <-chan struct{} { pegomock.RegisterMatcher(&pegomock.EqMatcher{Value: value}) var nullValue <-chan struct{} return nullValue }

**Thoughts**
This might be just due to how we are naming things based on the type name. If so, this could theoretically be a spot fix based on any type of `struct{}`. 

[jpopadak]

Please note that the actual Mock object itself is CORRECT. Everything properly compiles and works from that front, it just seems like the generate of the matchers fails.

[petergtz]

Hi @jpopadak, thanks for reporting this. Unfortunately, I'm not able to work on this any time soon. If you want to submit a PR, I'm more than happy to merge it.