package api

import (
	"testing"
)

func TestFib(t *testing.T) {
	var (
		in       = 7
		expected = 13
	)
	actual := Fib(in)
	if actual != expected {
		t.Errorf("-----")
	}
	t.Logf("%s", "sucess")
}

func Fib(n int) int {
	if n < 2 {
		return n
	}
	return Fib(n-1) + Fib(n-2)
}

// func BenchmarkHello(b *testing.B) {
// 	for i := 0; 1 < b.N; i++ {
// 		fmt.Sprintf("hello")
// 	}
// }

// func BenchmarkFib10(b *testing.B) {

//		for n := 0; n < b.N; n++ {
//			Fib(10)
//		}
//	}
func BenchmarkFib1(b *testing.B) {
	benchmarkFib(1, b)
}
func BenchmarkFib2(b *testing.B) {
	benchmarkFib(2, b)
}
func BenchmarkFib3(b *testing.B) {

	benchmarkFib(3, b)
}
func BenchmarkFib10(b *testing.B) {
	benchmarkFib(10, b)
}
func BenchmarkFib20(b *testing.B) {
	benchmarkFib(20, b)
}
func BenchmarkFib40(b *testing.B) {
	benchmarkFib(40, b)
}

func benchmarkFib(i int, b *testing.B) {
	b.ReportAllocs()
	for n := 0; n < b.N; n++ {
		Fib(i)
	}
}