sketch_test.go

package main

import (
  "github.com/codegangsta/inject"
  "reflect"
  "testing"
)

func helloWorld(val string) {
  i := 0
  i++
}

func BenchmarkFunctionCall(b *testing.B) {
  for i := 0; i < b.N; i++ {
    helloWorld("foo")
  }
}

func BenchmarkReflectCall(b *testing.B) {
  val := reflect.ValueOf(helloWorld)
  for i := 0; i < b.N; i++ {
    val.Call([]reflect.Value{reflect.ValueOf("foo")})
  }
}

func BenchmarkInvoke(b *testing.B) {
  injector := inject.New()
  injector.Map("foo")
  for i := 0; i < b.N; i++ {
    injector.Invoke(helloWorld)
  }
}

BenchmarkFunctionCall 2000000000 0.57 ns/op
BenchmarkReflectCall 5000000 380 ns/op
BenchmarkInvoke 5000000 538 ns/op