Client-go usage example 5

error_case_test.go

package main

import (
	"errors"
	"fmt"
	"log"

	meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/client-go/kubernetes/fake"
	"k8s.io/client-go/testing"
)

func main() {
	client := newClient()
	setServerError(client)

	pods, err := client.CoreV1().Pods("").List(meta_v1.ListOptions{})
	if err != nil {
		log.Fatal(err)
	}

	for _, pod := range pods.Items {
		fmt.Println(pod.Name)
	}
}

func newClient() *fake.Clientset {
	return fake.NewSimpleClientset()
}

func setServerError(client *fake.Clientset) {
	client.Fake.PrependReactor("list", "pods", func(action testing.Action) (bool, runtime.Object, error) {
		return true, nil, errors.New("server error")
	})
}