// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
// or implied. See the License for the specific language governing permissions and limitations under the License.

package querycoord

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/milvus-io/milvus/internal/msgstream"
	"github.com/milvus-io/milvus/internal/proto/commonpb"
	"github.com/milvus-io/milvus/internal/proto/querypb"
)

func TestQueryCoord_Init(t *testing.T) {
	ctx := context.Background()
	msFactory := msgstream.NewPmsFactory()
	service, err := NewQueryCoord(context.Background(), msFactory)
	assert.Nil(t, err)
	service.Init()
	service.Start()

	t.Run("Test create channel", func(t *testing.T) {
		request := &querypb.CreateQueryChannelRequest{}
		response, err := service.CreateQueryChannel(ctx, request)
		assert.Nil(t, err)
		assert.Equal(t, response.RequestChannel, "query-0")
		assert.Equal(t, response.ResultChannel, "queryResult-0")
	})

	t.Run("Test Get statistics channel", func(t *testing.T) {
		response, err := service.GetStatisticsChannel(ctx)
		assert.Nil(t, err)
		assert.Equal(t, response, "query-node-stats")
	})

	t.Run("Test Get timeTick channel", func(t *testing.T) {
		response, err := service.GetTimeTickChannel(ctx)
		assert.Nil(t, err)
		assert.Equal(t, response, "queryTimeTick")
	})

	service.Stop()
}

func TestQueryCoord_load(t *testing.T) {
	ctx := context.Background()
	msFactory := msgstream.NewPmsFactory()
	service, err := NewQueryCoord(context.Background(), msFactory)
	assert.Nil(t, err)
	service.Init()
	service.Start()
	service.SetRootCoord(NewRootCoordMock())
	service.SetDataCoord(NewDataMock())
	registerNodeRequest := &querypb.RegisterNodeRequest{
		Address: &commonpb.Address{},
	}
	service.RegisterNode(ctx, registerNodeRequest)

	t.Run("Test LoadSegment", func(t *testing.T) {
		loadCollectionRequest := &querypb.LoadCollectionRequest{
			CollectionID: 1,
		}
		response, err := service.LoadCollection(ctx, loadCollectionRequest)
		assert.Nil(t, err)
		assert.Equal(t, response.ErrorCode, commonpb.ErrorCode_Success)
	})

	t.Run("Test LoadPartition", func(t *testing.T) {
		loadPartitionRequest := &querypb.LoadPartitionsRequest{
			CollectionID: 1,
			PartitionIDs: []UniqueID{1},
		}
		response, err := service.LoadPartitions(ctx, loadPartitionRequest)
		assert.Nil(t, err)
		assert.Equal(t, response.ErrorCode, commonpb.ErrorCode_Success)
	})
}