package kafka

import (
	"bufio"
	"bytes"
	"context"
	"reflect"
	"testing"
)

func TestClientDeleteTopics(t *testing.T) {
	client, shutdown := newLocalClient()
	defer shutdown()

	topic := makeTopic()
	createTopic(t, topic, 1)

	res, err := client.DeleteTopics(context.Background(), &DeleteTopicsRequest{
		Topics: []string{topic},
	})

	if err != nil {
		t.Fatal(err)
	}

	if err := res.Errors[topic]; err != nil {
		t.Error(err)
	}
}

func TestDeleteTopicsResponseV1(t *testing.T) {
	item := deleteTopicsResponseV0{
		TopicErrorCodes: []deleteTopicsResponseV0TopicErrorCode{
			{
				Topic:     "a",
				ErrorCode: 7,
			},
		},
	}

	b := bytes.NewBuffer(nil)
	w := &writeBuffer{w: b}
	item.writeTo(w)

	var found deleteTopicsResponseV0
	remain, err := (&found).readFrom(bufio.NewReader(b), b.Len())
	if err != nil {
		t.Fatal(err)
	}
	if remain != 0 {
		t.Fatalf("expected 0 remain, got %v", remain)
	}
	if !reflect.DeepEqual(item, found) {
		t.Fatal("expected item and found to be the same")
	}
}