Move response matching onto the type that owns them

go/fake-http/fake-http.go

var responses Responses
// Responses is a list of responses that will be stubbed/faked.
type Responses []Response
func main() {
	flag.Parse()
	return nil
}
func matchResponse(req *http.Request, responses []Response) *Response {
	for _, resp := range responses {
		if req.Method == resp.Method && req.URL.Path == resp.Path {
			return &resp
		}
	}
	return nil
}
func respondWithStub(responses []Response, w http.ResponseWriter, req *http.Request) *http.Response {
	resp := matchResponse(req, responses)
func respondWithStub(responses Responses, w http.ResponseWriter, req *http.Request) *http.Response {
	resp := responses.Match(req)
	if resp == nil {
		resp = &Response{Status: 404, Body: "Not found"}
	}
	Value string `yaml:"value"`
}
// Responses is a list of responses that will be stubbed/faked.
type Responses []Response
// Match returns a response definition matching the request.
func (rs *Responses) Match(req *http.Request) *Response {
	for _, resp := range *rs {
		if req.Method == resp.Method && req.URL.Path == resp.Path {
			return &resp
		}
	}
	return nil
}
// Load loads responses from the YAML file at path.
func (rs *Responses) Load(path string) {
	if path == "" {