Testing using viper with lists in config

viperlisttest.go

package main

import (
	"bytes"
	"fmt"

	"github.com/spf13/viper"
)

func main() {
	viper.SetConfigType("yaml") // or viper.SetConfigType("YAML")

	// any approach to require this configuration into your program.
	var yamlExample = []byte(`
Hacker: true
name: steve
hobbies:
- skateboarding
- snowboarding
- go
clothing:
  jacket: leather
  trousers: denim
age: 35
eyes : brown
beard: true
`)

	viper.ReadConfig(bytes.NewBuffer(yamlExample))

	fmt.Println("Hobbies:")
	keytoread := "hobbies"
	if viper.InConfig(keytoread) {
		items := viper.GetStringSlice(keytoread)

		for _, item := range items {
			fmt.Printf("%v\n", item)
		}
	}

	fmt.Println("Clothing:")
	keytoread = "clothing"
	if viper.InConfig(keytoread) {
		items := viper.GetStringMapString(keytoread)

		for k, v := range items {
			fmt.Printf("%v : %v\n", k, v)
		}
	}
}

Updated example. Included examples for both lists (slices) and maps