routes.go

package main

import (
  "fmt"
  "net/http"
  "log"
)

type ApiFunc func(w http.ResponseWriter, r *http.Request)

func main() {
  createRoutes()

  log.Println("Listening on :4242")
  http.ListenAndServe(":4242", nil)
}

func createRoutes() {
  m := map[string]map[string]ApiFunc{
    "GET": {
      "/ping": ping,
      "/pong": pong,
    },
  }

  for method, routes := range m {
    for route, function := range routes {
      log.Printf("Creating route %s with method %s", route, method)
      x := createHandler(method, route, function)
    }
  }
}

func createHandler(method string, route string, function ApiFunc) http.HandlerFunc {
  return http.HandlerFunc(route, function)
}

func ping(w http.ResponseWriter, r *http.Request) {
  fmt.Fprintf(w, "I'm ping @ %s", r.URL.Path[1:])
}

func pong(w http.ResponseWriter, r *http.Request) {
  fmt.Fprintf(w, "I'm pong @ %s", r.URL.Path[1:])
  // POSTGRESQL
}

routes_unit_test.go

package main

import (
  "testing"
  "fmt"
  "net/http"
  "net/http/httptest"
)


func TestGetPing(t *testing.T) {

  recorder := httptest.NewRecorder()

  req, err := http.NewRequest("GET", "http://localhost/ping", nil)

  if err != nil {
    t.Fatal(err)
  }

  http.DefaultServeMux.ServeHTTP(recorder, req)
  fmt.Print(recorder.Body.String())
}