package collector

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestSmartInfo_Capacity(t *testing.T) {
	t.Run("should report nvme capacity", func(t *testing.T) {
		smartInfo := SmartInfo{
			UserCapacity: UserCapacity{
				Bytes: 1234,
			},
			NvmeTotalCapacity: 5678,
		}
		assert.Equal(t, int64(5678), smartInfo.Capacity())
	})

	t.Run("should report user capacity", func(t *testing.T) {
		smartInfo := SmartInfo{
			UserCapacity: UserCapacity{
				Bytes: 1234,
			},
		}
		assert.Equal(t, int64(1234), smartInfo.Capacity())
	})

	t.Run("should report 0 for unknown capacities", func(t *testing.T) {
		var smartInfo SmartInfo
		assert.Zero(t, smartInfo.Capacity())
	})
}