package cache

import (
	"fmt"
	"testing"

	. "github.com/smartystreets/goconvey/convey"
)

func Test_FindSegmentIndex(t *testing.T) {
	cases := []struct {
		title    string
		buffer   SegmentBuffer
		postions []int64
		wants    []int
	}{
		{
			buffer: SegmentBuffer{
				buzys: []*FileSegment{
					{Position: 0}, {Position: 10},
				},
			},
			postions: []int64{0, 2, 10, 11},
			wants:    []int{0, 0, 1, 1},
		},
	}

	for i, c := range cases {
		for j, _ := range c.postions {
			Convey(fmt.Sprintf("%d.%d. %s", i, j, c.title), t, func() {
				got := c.buffer.FirstContains(c.postions[j])
				So(got, ShouldEqual, c.wants[j])
			})
		}
	}
}