/*
 * Copyright 2018-present Open Networking Foundation

 * 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.
 */

/*
This file contains unit test cases for functions in the file resourcemanager.go.
This file also implements the Client interface to mock the kv-client, fields struct to mock OpenOltResourceMgr
and few utility functions.
*/

//Package adaptercore provides the utility for olt devices, flows and statistics
package resourcemanager

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"reflect"
	"strconv"
	"strings"
	"testing"
	"time"

	"github.com/opencord/voltha-lib-go/v7/pkg/techprofile"
	"github.com/opencord/voltha-openolt-adapter/pkg/mocks"

	"github.com/opencord/voltha-lib-go/v7/pkg/db"
	"github.com/opencord/voltha-lib-go/v7/pkg/db/kvstore"
	fu "github.com/opencord/voltha-lib-go/v7/pkg/flows"
	"github.com/opencord/voltha-lib-go/v7/pkg/log"
	ponrmgr "github.com/opencord/voltha-lib-go/v7/pkg/ponresourcemanager"
	ofp "github.com/opencord/voltha-protos/v5/go/openflow_13"
	"github.com/opencord/voltha-protos/v5/go/openolt"
)

func init() {
	_, _ = log.SetDefaultLogger(log.JSON, log.DebugLevel, nil)
}

const (
	// MeterConfig meter to extract meter
	MeterConfig = "meter_id"
	// TpIDSuffixPath to extract Techprofile
	// TpIDSuffixPath = "tp_id"
	// FlowIDInfo to extract flows
	FlowIDInfo = "flow_id_info"
	// FlowIds to extract flows
	FlowIDs = "flow_ids"
	// GemportIDs to gemport_ids
	GemportIDs = "gemport_ids"
	// AllocIDs to extract alloc_ids
	AllocIDs = "alloc_ids"
	// GemportIDPool to extract gemport
	GemportIDPool = "gemport_id_pool"
	// AllocIDPool to extract allocid
	AllocIDPool = "alloc_id_pool"
	// FlowIDpool to extract Flow ids
	FlowIDpool = "flow_id_pool"
)

// fields mocks  OpenOltResourceMgr struct.
type fields struct {
	DeviceID       string
	Address        string
	Args           string
	KVStore        *db.Backend
	DeviceType     string
	DevInfo        *openolt.DeviceInfo
	PonRsrMgr      *ponrmgr.PONResourceManager
	NumOfPonPorts  uint32
	TechProfileRef techprofile.TechProfileIf
}

// MockKVClient mocks the AdapterProxy interface.
type MockResKVClient struct {
}

// getResMgr mocks OpenOltResourceMgr struct.
func getResMgr() *fields {
	var resMgr fields
	resMgr.KVStore = &db.Backend{
		Client: &MockResKVClient{},
	}
	resMgr.PonRsrMgr = &ponrmgr.PONResourceManager{}
	ranges := make(map[string]interface{})
	sharedIdxByType := make(map[string]string)
	sharedIdxByType["ALLOC_ID"] = "ALLOC_ID"
	sharedIdxByType["ONU_ID"] = "ONU_ID"
	sharedIdxByType["GEMPORT_ID"] = "GEMPORT_ID"
	sharedIdxByType["FLOW_ID"] = "FLOW_ID"
	ranges["ONU_ID"] = uint32(0)
	ranges["GEMPORT_ID"] = uint32(0)
	ranges["ALLOC_ID"] = uint32(0)
	ranges["FLOW_ID"] = uint32(0)
	ranges["onu_id_shared"] = uint32(0)
	ranges["alloc_id_shared"] = uint32(0)
	ranges["gemport_id_shared"] = uint32(0)
	ranges["flow_id_shared"] = uint32(0)
	resMgr.NumOfPonPorts = 16
	resMgr.DevInfo = &openolt.DeviceInfo{PonPorts: 16}
	resMgr.PonRsrMgr.DeviceID = "onu-1"
	resMgr.PonRsrMgr.IntfIDs = []uint32{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
	resMgr.PonRsrMgr.KVStore = &db.Backend{
		Client: &MockResKVClient{},
	}
	resMgr.PonRsrMgr.Technology = "XGS-PON"
	resMgr.PonRsrMgr.PonResourceRanges = ranges
	resMgr.PonRsrMgr.SharedIdxByType = sharedIdxByType
	resMgr.TechProfileRef = mocks.MockTechProfile{}

	/*
		tpMgr, err := tp.NewTechProfile(ctx, resMgr.PonRsrMgr, "etcd", "127.0.0.1", "/")
		if err != nil {
			logger.Fatal(ctx, err.Error())
		}
	*/

	return &resMgr
}

// List function implemented for KVClient.
func (kvclient *MockResKVClient) List(ctx context.Context, key string) (map[string]*kvstore.KVPair, error) {
	return nil, errors.New("key didn't find")
}

// Get mock function implementation for KVClient
func (kvclient *MockResKVClient) Get(ctx context.Context, key string) (*kvstore.KVPair, error) {
	logger.Debugw(ctx, "Warning Warning Warning: Get of MockKVClient called", log.Fields{"key": key})
	if key != "" {
		if strings.Contains(key, MeterConfig) {
			var bands []*ofp.OfpMeterBandHeader
			bands = append(bands, &ofp.OfpMeterBandHeader{Type: ofp.OfpMeterBandType_OFPMBT_DSCP_REMARK,
				Rate: 1024, Data: &ofp.OfpMeterBandHeader_DscpRemark{DscpRemark: &ofp.OfpMeterBandDscpRemark{PrecLevel: 2}}})

			bands = append(bands, &ofp.OfpMeterBandHeader{Type: ofp.OfpMeterBandType_OFPMBT_DSCP_REMARK,
				Rate: 1024, Data: &ofp.OfpMeterBandHeader_DscpRemark{DscpRemark: &ofp.OfpMeterBandDscpRemark{PrecLevel: 3}}})

			sep := strings.Split(key, "/")[1]
			val, _ := strconv.ParseInt(strings.Split(sep, ",")[1], 10, 32)
			if uint32(val) > 1 {
				meterConfig := &ofp.OfpMeterConfig{MeterId: uint32(val), Bands: bands}
				str, _ := json.Marshal(meterConfig)

				return kvstore.NewKVPair(key, str, "mock", 3000, 1), nil
			}
			return nil, errors.New("invalid meter")
		}
		if strings.Contains(key, FlowIDpool) || strings.Contains(key, GemportIDPool) || strings.Contains(key, AllocIDPool) {
			logger.Debug(ctx, "Error Error Error Key:", FlowIDpool, GemportIDPool, AllocIDPool)
			data := make(map[string]interface{})
			data["pool"] = "1024"
			data["start_idx"] = 1
			data["end_idx"] = 1024
			str, _ := json.Marshal(data)
			return kvstore.NewKVPair(key, str, "mock", 3000, 1), nil
		}
		if strings.Contains(key, FlowIDInfo) || strings.Contains(key, FlowIDs) {
			logger.Debug(ctx, "Error Error Error Key:", FlowIDs, FlowIDInfo)
			str, _ := json.Marshal([]uint32{1, 2})
			return kvstore.NewKVPair(key, str, "mock", 3000, 1), nil
		}
		if strings.Contains(key, AllocIDs) || strings.Contains(key, GemportIDs) {
			logger.Debug(ctx, "Error Error Error Key:", AllocIDs, GemportIDs)
			str, _ := json.Marshal(1)
			return kvstore.NewKVPair(key, str, "mock", 3000, 1), nil
		}
		if strings.Contains(key, McastQueuesForIntf) {
			logger.Debug(ctx, "Error Error Error Key:", McastQueuesForIntf)
			mcastQueues := make(map[uint32][]uint32)
			mcastQueues[10] = []uint32{4000, 0}
			str, _ := json.Marshal(mcastQueues)
			return kvstore.NewKVPair(key, str, "mock", 3000, 1), nil
		}
		if strings.Contains(key, "flow_groups") && !strings.Contains(key, "1000") {
			groupInfo := GroupInfo{GroupID: 2, OutPorts: []uint32{2}}
			str, _ := json.Marshal(groupInfo)
			return kvstore.NewKVPair(key, str, "mock", 3000, 1), nil
		}

		maps := make(map[string]*kvstore.KVPair)
		maps[key] = &kvstore.KVPair{Key: key}
		return maps[key], nil
	}
	return nil, errors.New("key didn't find")
}

// Put mock function implementation for KVClient
func (kvclient *MockResKVClient) Put(ctx context.Context, key string, value interface{}) error {
	if key != "" {
		return nil
	}
	return errors.New("key didn't find")
}

// Delete mock function implementation for KVClient
func (kvclient *MockResKVClient) Delete(ctx context.Context, key string) error {
	return nil
}

// DeleteWithPrefix mock function implementation for KVClient
func (kvclient *MockResKVClient) DeleteWithPrefix(ctx context.Context, prefix string) error {
	return nil
}

// Reserve mock function implementation for KVClient
func (kvclient *MockResKVClient) Reserve(ctx context.Context, key string, value interface{}, ttl time.Duration) (interface{}, error) {
	return nil, errors.New("key didn't find")
}

// ReleaseReservation mock function implementation for KVClient
func (kvclient *MockResKVClient) ReleaseReservation(ctx context.Context, key string) error {
	return nil
}

// ReleaseAllReservations mock function implementation for KVClient
func (kvclient *MockResKVClient) ReleaseAllReservations(ctx context.Context) error {
	return nil
}

// RenewReservation mock function implementation for KVClient
func (kvclient *MockResKVClient) RenewReservation(ctx context.Context, key string) error {
	return nil
}

// Watch mock function implementation for KVClient
func (kvclient *MockResKVClient) Watch(ctx context.Context, key string, withPrefix bool) chan *kvstore.Event {
	return nil
}

// AcquireLock mock function implementation for KVClient
func (kvclient *MockResKVClient) AcquireLock(ctx context.Context, lockName string, timeout time.Duration) error {
	return nil
}

// ReleaseLock mock function implementation for KVClient
func (kvclient *MockResKVClient) ReleaseLock(lockName string) error {
	return nil
}

// IsConnectionUp mock function implementation for KVClient
func (kvclient *MockResKVClient) IsConnectionUp(ctx context.Context) bool { // timeout in second
	return true
}

// CloseWatch mock function implementation for KVClient
func (kvclient *MockResKVClient) CloseWatch(ctx context.Context, key string, ch chan *kvstore.Event) {
}

// Close mock function implementation for KVClient
func (kvclient *MockResKVClient) Close(ctx context.Context) {
}

// testResMgrObject maps fields type to OpenOltResourceMgr type.
func testResMgrObject(testResMgr *fields) *OpenOltResourceMgr {
	var rsrMgr = OpenOltResourceMgr{
		DeviceID:       testResMgr.DeviceID,
		Args:           testResMgr.Args,
		KVStore:        testResMgr.KVStore,
		DeviceType:     testResMgr.DeviceType,
		Address:        testResMgr.Address,
		DevInfo:        testResMgr.DevInfo,
		PonRsrMgr:      testResMgr.PonRsrMgr,
		TechprofileRef: testResMgr.TechProfileRef,
	}
	rsrMgr.InitLocalCache()

	return &rsrMgr
}

func TestNewResourceMgr(t *testing.T) {
	type args struct {
		deviceID       string
		intfID         uint32
		KVStoreAddress string
		kvStoreType    string
		deviceType     string
		devInfo        *openolt.DeviceInfo
		kvStorePrefix  string
	}
	/* As of not the current NewResourceMgr test is not doing anything as there was no resourceranges passed.
	      passing the resource ranges would mean passing a mock and changes in all around including device handler and other places.
	      For now , removed the older version of proto which used ONUIDSTart and ONUIDENd which is not valid.
	      This test needs to be updated once the kv store mock is fixed all around. Use the below resource ranges in the Ranges of deviceinfo once the kv store is fixed.
	   intfids := []uint32{0, 1, 2, 3, 4, 5}
	   devOnuRsrcPools := &openolt.DeviceInfo_DeviceResourceRanges_Pool{Type: openolt.DeviceInfo_DeviceResourceRanges_Pool_ONU_ID, Sharing: openolt.DeviceInfo_DeviceResourceRanges_Pool_DEDICATED_PER_INTF, Start: 1, End: 60}
	   devGemRsrcPools := &openolt.DeviceInfo_DeviceResourceRanges_Pool{Type: openolt.DeviceInfo_DeviceResourceRanges_Pool_GEMPORT_ID, Sharing: openolt.DeviceInfo_DeviceResourceRanges_Pool_DEDICATED_PER_INTF, Start: 1, End: 10000}
	   devAllocRsrcPools := &openolt.DeviceInfo_DeviceResourceRanges_Pool{Type: openolt.DeviceInfo_DeviceResourceRanges_Pool_ALLOC_ID, Sharing: openolt.DeviceInfo_DeviceResourceRanges_Pool_DEDICATED_PER_INTF, Start: 1, End: 256}
	   devFlowRsrcPools := &openolt.DeviceInfo_DeviceResourceRanges_Pool{Type: openolt.DeviceInfo_DeviceResourceRanges_Pool_FLOW_ID, Sharing: openolt.DeviceInfo_DeviceResourceRanges_Pool_SHARED_BY_ALL_INTF_SAME_TECH, Start: 1, End: 20000}
	   pool := []*openolt.DeviceInfo_DeviceResourceRanges_Pool{devOnuRsrcPools, devGemRsrcPools, devAllocRsrcPools, devFlowRsrcPools}
	   devRsrc := &openolt.DeviceInfo_DeviceResourceRanges{IntfIds: intfids, Technology: "GPON", Pools: pool}
	   devRsrcPool := []*openolt.DeviceInfo_DeviceResourceRanges{devRsrc}
	*/
	tests := []struct {
		name string
		args args
		want *OpenOltResourceMgr
	}{
		{"NewResourceMgr-2", args{"olt1", 0, "1:2", "etcd",
			"olt", &openolt.DeviceInfo{}, "service/voltha"}, &OpenOltResourceMgr{}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if got := NewResourceMgr(ctx, tt.args.intfID, tt.args.deviceID, tt.args.KVStoreAddress, tt.args.kvStoreType, tt.args.deviceType, tt.args.devInfo, tt.args.kvStorePrefix); reflect.TypeOf(got) != reflect.TypeOf(tt.want) {
				t.Errorf("NewResourceMgr() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestOpenOltResourceMgr_Delete(t *testing.T) {
	type args struct {
		intfID uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		wantErr error
		args    args
	}{
		{"Delete-1", getResMgr(), errors.New("failed to clear device resource pool"), args{intfID: 0}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.Delete(ctx, tt.args.intfID); (err != nil) && reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) {
				t.Errorf("Delete() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestOpenOltResourceMgr_FreePONResourcesForONU(t *testing.T) {
	type args struct {
		intfID uint32
		onuID  uint32
		uniID  uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
	}{
		{"FreePONResourcesForONU-1", getResMgr(), args{1, 0, 2}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			RsrcMgr.FreePONResourcesForONU(ctx, tt.args.onuID, tt.args.uniID)
		})
	}
}

func TestOpenOltResourceMgr_FreeonuID(t *testing.T) {
	type args struct {
		intfID uint32
		onuID  []uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
	}{
		{"FreeOnuID-1", getResMgr(), args{1, []uint32{1, 2}}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			RsrcMgr.FreeonuID(ctx, tt.args.onuID)
		})
	}
}

func TestOpenOltResourceMgr_GetCurrentAllocIDForOnu(t *testing.T) {
	type args struct {
		intfID uint32
		onuID  uint32
		uniID  uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
		want   []uint32
	}{
		{"GetCurrentAllocIDForOnu-1", getResMgr(), args{1, 2, 2}, []uint32{}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			got := RsrcMgr.GetCurrentAllocIDsForOnu(ctx, tt.args.onuID, tt.args.uniID)
			if len(got) != len(tt.want) {
				t.Errorf("GetCurrentAllocIDsForOnu() = %v, want %v", got, tt.want)
			} else {
				for i := range tt.want {
					if got[i] != tt.want[i] {
						t.Errorf("GetCurrentAllocIDsForOnu() = %v, want %v", got, tt.want)
						break
					}
				}
			}
		})
	}
}

func TestOpenOltResourceMgr_DeleteAllFlowIDsForGemForIntf(t *testing.T) {

	type args struct {
		PONIntfID uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
		want   error
	}{
		{"DeleteAllFlowIDsForGemForIntf-1", getResMgr(), args{0}, nil},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			err := RsrcMgr.DeleteAllFlowIDsForGemForIntf(ctx)
			if err != nil {
				t.Errorf("DeleteAllFlowIDsForGemForIntf() returned error")
			}
		})
	}
}

func TestOpenOltResourceMgr_DeleteAllOnuGemInfoForIntf(t *testing.T) {

	type args struct {
		PONIntfID uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
		want   error
	}{
		{"DeleteAllOnuGemInfoForIntf-1", getResMgr(), args{0}, nil},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			err := RsrcMgr.DeleteAllOnuGemInfoForIntf(ctx)
			if err != nil {
				t.Errorf("DeleteAllOnuGemInfoForIntf() returned error")
			}
		})
	}
}

func TestOpenOltResourceMgr_deleteGemPort(t *testing.T) {

	type args struct {
		intfID                uint32
		onuID                 uint32
		gemPortIDs            []uint32
		gemPortIDsToBeDeleted []uint32
		gemPortIDsRemaining   []uint32
		serialNum             string
		finalLength           int
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
	}{
		// Add/Delete single gem port
		{"DeleteGemPortFromLocalCache1", getResMgr(), args{0, 1, []uint32{1}, []uint32{1}, []uint32{}, "onu1", 0}},
		// Delete all gemports
		{"DeleteGemPortFromLocalCache2", getResMgr(), args{0, 1, []uint32{1, 2, 3, 4}, []uint32{1, 2, 3, 4}, []uint32{}, "onu1", 0}},
		// Try to delete when there is no gem port
		{"DeleteGemPortFromLocalCache3", getResMgr(), args{0, 1, []uint32{}, []uint32{1, 2}, nil, "onu1", 0}},
		// Try to delete non-existent gem port
		{"DeleteGemPortFromLocalCache4", getResMgr(), args{0, 1, []uint32{1}, []uint32{2}, []uint32{1}, "onu1", 1}},
		// Try to delete two of the gem ports
		{"DeleteGemPortFromLocalCache5", getResMgr(), args{0, 1, []uint32{1, 2, 3, 4}, []uint32{2, 4}, []uint32{1, 3}, "onu1", 2}},
	}
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			if err := RsrcMgr.DelOnuGemInfo(ctx, tt.args.onuID); err != nil {
				t.Errorf("failed to remove onu")
			}
			if err := RsrcMgr.AddNewOnuGemInfoToCacheAndKvStore(ctx, tt.args.onuID, tt.args.serialNum); err != nil {
				t.Errorf("failed to add onu")
			}
			for _, gemPort := range tt.args.gemPortIDs {
				if err := RsrcMgr.AddGemToOnuGemInfo(ctx, tt.args.onuID, gemPort); err != nil {
					t.Errorf("failed to add gem to onu")
				}
			}
			for _, gemPortDeleted := range tt.args.gemPortIDsToBeDeleted {
				if err := RsrcMgr.RemoveGemFromOnuGemInfo(ctx, tt.args.onuID, gemPortDeleted); err != nil {
					t.Errorf("failed to remove gem from onu")
				}
			}
			lenofGemPorts := 0
			gP, err := RsrcMgr.GetOnuGemInfo(ctx, tt.args.onuID)
			if err != nil || gP == nil {
				t.Errorf("failed to get onuGemInfo")
			}
			var gemPorts []uint32

			lenofGemPorts = len(gP.GemPorts)
			gemPorts = gP.GemPorts

			if lenofGemPorts != tt.args.finalLength {
				t.Errorf("GemPorts length is not as expected len = %d, want %d", lenofGemPorts, tt.args.finalLength)
			}

			if !reflect.DeepEqual(tt.args.gemPortIDsRemaining, gemPorts) {
				t.Errorf("GemPorts are not as expected = %v, want %v", gemPorts, tt.args.gemPortIDsRemaining)
			}
		})
	}
}

func TestOpenOltResourceMgr_AddNewOnuGemInfo(t *testing.T) {

	type args struct {
		PONIntfID uint32
		OnuCount  uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
		want   error
	}{
		{"AddNewOnuGemInfoForIntf-0", getResMgr(), args{0, 32}, nil},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			for j := 1; j <= int(tt.args.OnuCount); j++ {
				go func(i uint32, j uint32) {
					// TODO: actually verify success
					_ = RsrcMgr.AddNewOnuGemInfoToCacheAndKvStore(ctx, i, fmt.Sprintf("onu-%d", i))
				}(tt.args.PONIntfID, uint32(j))
			}
		})
	}
}

func TestOpenOltFlowMgr_addGemPortToOnuInfoMap(t *testing.T) {

	type args struct {
		intfID              uint32
		onuID               uint32
		gemPortIDs          []uint32
		gemPortIDsRemaining []uint32
		serialNum           string
		finalLength         int
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
	}{
		// Add single gem port
		{"addGemPortToOnuInfoMap1", getResMgr(), args{0, 1, []uint32{1}, []uint32{1}, "onu1", 1}},
		// Delete all gemports
		{"addGemPortToOnuInfoMap2", getResMgr(), args{0, 1, []uint32{1, 2, 3, 4}, []uint32{1, 2, 3, 4}, "onu1", 4}},
		// Do not add any gemport
		{"addGemPortToOnuInfoMap3", getResMgr(), args{0, 1, []uint32{}, nil, "onu1", 0}},
	}
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			if err := RsrcMgr.DelOnuGemInfo(ctx, tt.args.onuID); err != nil {
				t.Errorf("failed to remove onu")
			}
			if err := RsrcMgr.AddNewOnuGemInfoToCacheAndKvStore(ctx, tt.args.onuID, tt.args.serialNum); err != nil {
				t.Errorf("failed to add onu")
			}
			for _, gemPort := range tt.args.gemPortIDs {
				if err := RsrcMgr.AddGemToOnuGemInfo(ctx, tt.args.onuID, gemPort); err != nil {
					t.Errorf("failed to add gem to onu")
				}
			}

			lenofGemPorts := 0
			gP, err := RsrcMgr.GetOnuGemInfo(ctx, tt.args.onuID)

			var gemPorts []uint32
			if err == nil && gP != nil {
				lenofGemPorts = len(gP.GemPorts)
				gemPorts = gP.GemPorts
			}
			if lenofGemPorts != tt.args.finalLength {
				t.Errorf("GemPorts length is not as expected len = %d, want %d", lenofGemPorts, tt.args.finalLength)
			}

			if !reflect.DeepEqual(tt.args.gemPortIDsRemaining, gemPorts) {
				t.Errorf("GemPorts are not as expected = %v, want %v", gemPorts, tt.args.gemPortIDsRemaining)
			}
		})
	}
}

func TestOpenOltResourceMgr_GetCurrentGEMPortIDsForOnu(t *testing.T) {
	type args struct {
		intfID uint32
		onuID  uint32
		uniID  uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
		want   []uint32
	}{
		{"GetCurrentGEMPortIDsForOnu-1", getResMgr(), args{1, 2, 2}, []uint32{}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if got := RsrcMgr.GetCurrentGEMPortIDsForOnu(ctx, tt.args.onuID, tt.args.uniID); reflect.TypeOf(got) != reflect.TypeOf(tt.want) {
				t.Errorf("GetCurrentGEMPortIDsForOnu() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestOpenOltResourceMgr_GetMeterInfoForOnu(t *testing.T) {
	type args struct {
		Direction string
		IntfID    uint32
		OnuID     uint32
		UniID     uint32
		tpID      uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		want    *MeterInfo
		wantErr error
	}{
		{"GetMeterInfoForOnu", getResMgr(), args{"DOWNSTREAM", 0, 1, 1, 64},
			&MeterInfo{}, errors.New("failed to get Meter config from kvstore for path")},
		{"GetMeterInfoForOnu", getResMgr(), args{"DOWNSTREAM", 1, 2, 2, 65},
			&MeterInfo{}, errors.New("failed to get Meter config from kvstore for path")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			got, err := RsrcMgr.GetMeterInfoForOnu(ctx, tt.args.Direction, tt.args.OnuID, tt.args.UniID, tt.args.tpID)
			if reflect.TypeOf(got) != reflect.TypeOf(tt.want) && err != nil {
				t.Errorf("GetMeterInfoForOnu() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestOpenOltResourceMgr_GetONUID(t *testing.T) {
	type args struct {
		ponIntfID uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		want    uint32
		wantErr error
	}{
		{"GetONUID-1", getResMgr(), args{1}, uint32(0), errors.New("json errors")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			got, err := RsrcMgr.GetONUID(ctx)
			if got != tt.want && err != nil {
				t.Errorf("GetONUID() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestOpenOltResourceMgr_GetTechProfileIDForOnu(t *testing.T) {

	type args struct {
		IntfID uint32
		OnuID  uint32
		UniID  uint32
	}
	tests := []struct {
		name   string
		fields *fields
		args   args
		want   []uint32
	}{
		{"GetTechProfileIDForOnu-1", getResMgr(), args{1, 2, 2},
			[]uint32{1}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if got := RsrcMgr.GetTechProfileIDForOnu(ctx, tt.args.OnuID, tt.args.UniID); reflect.TypeOf(got) != reflect.TypeOf(tt.want) {
				t.Errorf("GetTechProfileIDForOnu() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestOpenOltResourceMgr_RemoveMeterIDForOnu(t *testing.T) {

	type args struct {
		Direction string
		IntfID    uint32
		OnuID     uint32
		UniID     uint32
		tpID      uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		wantErr error
	}{
		{"RemoveMeterIdForOnu-1", getResMgr(), args{"DOWNSTREAM", 1, 1, 1, 64},
			errors.New("failed to delete meter id %s from kvstore")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.RemoveMeterInfoForOnu(ctx, tt.args.Direction, tt.args.OnuID, tt.args.UniID,
				tt.args.tpID); reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) && err != nil {
				t.Errorf("RemoveMeterIDForOnu() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestOpenOltResourceMgr_RemoveTechProfileIDForOnu(t *testing.T) {
	type args struct {
		IntfID uint32
		OnuID  uint32
		UniID  uint32
		tpID   uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		wantErr error
	}{
		{"RemoveTechProfileIDForOnu-1", getResMgr(), args{1, 2, 2, 64},
			errors.New("failed to delete techprofile id resource %s in KV store")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.RemoveTechProfileIDForOnu(ctx, tt.args.OnuID, tt.args.UniID,
				tt.args.tpID); reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) && err != nil {
				t.Errorf("RemoveTechProfileIDForOnu() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestOpenOltResourceMgr_UpdateAllocIdsForOnu(t *testing.T) {
	type args struct {
		ponPort uint32
		onuID   uint32
		uniID   uint32
		allocID []uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		wantErr error
	}{
		{"UpdateAllocIdsForOnu-1", getResMgr(), args{1, 2, 2, []uint32{1, 2}},
			errors.New("")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.UpdateAllocIdsForOnu(ctx, tt.args.onuID, tt.args.uniID, tt.args.allocID); err != nil && reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) {
				t.Errorf("UpdateAllocIdsForOnu() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestOpenOltResourceMgr_UpdateGEMPortIDsForOnu(t *testing.T) {

	type args struct {
		ponPort     uint32
		onuID       uint32
		uniID       uint32
		GEMPortList []uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		wantErr error
	}{
		{"UpdateGEMPortIDsForOnu-1", getResMgr(), args{1, 2, 2,
			[]uint32{1, 2}}, errors.New("failed to update resource")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.UpdateGEMPortIDsForOnu(ctx, tt.args.onuID, tt.args.uniID, tt.args.GEMPortList); err != nil && reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) {
				t.Errorf("UpdateGEMPortIDsForOnu() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}
}

func TestOpenOltResourceMgr_UpdateMeterIDForOnu(t *testing.T) {
	type args struct {
		Direction string
		IntfID    uint32
		OnuID     uint32
		UniID     uint32
		tpID      uint32
		MeterInfo *MeterInfo
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		wantErr error
	}{
		{"UpdateMeterIDForOnu-1", getResMgr(), args{"DOWNSTREAM", 1, 2,
			2, 64, &MeterInfo{}}, errors.New("failed to get Meter config from kvstore for path")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.StoreMeterInfoForOnu(ctx, tt.args.Direction, tt.args.OnuID, tt.args.UniID,
				tt.args.tpID, tt.args.MeterInfo); reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) && err != nil {
				t.Errorf("UpdateMeterIDForOnu() got = %v, want %v", err, tt.wantErr)
			}
		})
	}
}

func TestOpenOltResourceMgr_UpdateTechProfileIDForOnu(t *testing.T) {
	type args struct {
		IntfID uint32
		OnuID  uint32
		UniID  uint32
		TpID   uint32
	}
	tests := []struct {
		name    string
		fields  *fields
		args    args
		wantErr error
	}{
		{"UpdateTechProfileIDForOnu-1", getResMgr(), args{1, 2, 2,
			2}, errors.New("failed to update resource")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			if err := RsrcMgr.UpdateTechProfileIDForOnu(ctx, tt.args.OnuID, tt.args.UniID, tt.args.TpID); reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) && err != nil {
				t.Errorf("UpdateTechProfileIDForOnu() got = %v, want %v", err, tt.wantErr)
			}
		})
	}
}

func TestSetKVClient(t *testing.T) {
	type args struct {
		backend       string
		address       string
		DeviceID      string
		kvStorePrefix string
	}
	tests := []struct {
		name string
		args args
		want *db.Backend
	}{
		{"setKVClient-1", args{"etcd", "1.1.1.1:1", "olt1", "service/voltha"}, &db.Backend{}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := SetKVClient(context.Background(), tt.args.backend, tt.args.address, tt.args.DeviceID, tt.args.kvStorePrefix); reflect.TypeOf(got) != reflect.TypeOf(tt.want) {
				t.Errorf("SetKVClient() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_newKVClient(t *testing.T) {
	type args struct {
		storeType string
		address   string
		timeout   time.Duration
	}
	var kvClient kvstore.Client
	tests := []struct {
		name    string
		args    args
		want    kvstore.Client
		wantErr error
	}{
		{"newKVClient-1", args{"", "3.3.3.3", 1}, kvClient, errors.New("unsupported-kv-store")},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := newKVClient(context.Background(), tt.args.storeType, tt.args.address, tt.args.timeout)
			if got != nil && reflect.TypeOf(got) != reflect.TypeOf(tt.want) {
				t.Errorf("newKVClient() got = %v, want %v", got, tt.want)
			}
			if (err != nil) && reflect.TypeOf(err) != reflect.TypeOf(tt.wantErr) {
				t.Errorf("newKVClient() error = %v, wantErr %v", err, tt.wantErr)
				return
			}

		})
	}
}

func TestOpenOltResourceMgr_AddMcastQueueForIntf(t *testing.T) {
	type args struct {
		intf            uint32
		gem             uint32
		servicePriority uint32
	}
	tests := []struct {
		name   string
		args   args
		fields *fields
	}{
		{"AddMcastQueueForIntf-1", args{0, 4000, 0}, getResMgr()},
		{"AddMcastQueueForIntf-2", args{1, 4000, 1}, getResMgr()},
		{"AddMcastQueueForIntf-3", args{2, 4000, 2}, getResMgr()},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			err := RsrcMgr.AddMcastQueueForIntf(ctx, tt.args.gem, tt.args.servicePriority)
			if err != nil {
				t.Errorf("%s got err= %s wants nil", tt.name, err)
				return
			}
		})
	}
}

func TestOpenOltResourceMgr_DeleteMcastQueueForIntf(t *testing.T) {
	tests := []struct {
		name   string
		fields *fields
	}{
		{"DeleteMcastQueueForIntf-1", getResMgr()},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			RsrcMgr.DeleteMcastQueueForIntf(ctx)
		})
	}
}

func newGroup(groupID uint32, outPorts []uint32) *ofp.OfpGroupEntry {
	groupDesc := ofp.OfpGroupDesc{
		Type:    ofp.OfpGroupType_OFPGT_ALL,
		GroupId: groupID,
	}
	groupEntry := ofp.OfpGroupEntry{
		Desc: &groupDesc,
	}
	for i := 0; i < len(outPorts); i++ {
		var acts []*ofp.OfpAction
		acts = append(acts, fu.Output(outPorts[i]))
		bucket := ofp.OfpBucket{
			Actions: acts,
		}
		groupDesc.Buckets = append(groupDesc.Buckets, &bucket)
	}
	return &groupEntry
}

func TestOpenOltResourceMgr_AddFlowGroupToKVStore(t *testing.T) {
	type args struct {
		group  *ofp.OfpGroupEntry
		cached bool
	}
	//create group 1
	group1 := newGroup(1, []uint32{1})
	//create group 2
	group2 := newGroup(2, []uint32{2})
	//define test set
	tests := []struct {
		name   string
		args   args
		fields *fields
	}{
		{"AddFlowGroupToKVStore-1", args{group1, true}, getResMgr()},
		{"AddFlowGroupToKVStore-2", args{group2, false}, getResMgr()},
	}
	//execute tests
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			err := RsrcMgr.AddFlowGroupToKVStore(ctx, tt.args.group, tt.args.cached)
			if err != nil {
				t.Errorf("%s got err= %s wants nil", tt.name, err)
				return
			}
		})
	}
}

func TestOpenOltResourceMgr_RemoveFlowGroupFromKVStore(t *testing.T) {
	type args struct {
		groupID uint32
		cached  bool
	}
	//define test set
	tests := []struct {
		name   string
		args   args
		fields *fields
	}{
		{"RemoveFlowGroupFromKVStore-1", args{1, true}, getResMgr()},
		{"RemoveFlowGroupFromKVStore-2", args{2, false}, getResMgr()},
	}
	//execute tests
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			err := RsrcMgr.RemoveFlowGroupFromKVStore(ctx, tt.args.groupID, tt.args.cached)
			if err != nil {
				t.Errorf("%s got false but wants true", tt.name)
				return
			}
		})
	}
}

func TestOpenOltResourceMgr_GetFlowGroupFromKVStore(t *testing.T) {
	type args struct {
		groupID uint32
		cached  bool
	}
	//define test set
	tests := []struct {
		name   string
		args   args
		fields *fields
	}{
		{"GetFlowGroupFromKVStore-1", args{1, true}, getResMgr()},
		{"GetFlowGroupFromKVStore-2", args{2, false}, getResMgr()},
		{"GetFlowGroupFromKVStore-3", args{1000, false}, getResMgr()},
	}
	//execute tests
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			RsrcMgr := testResMgrObject(tt.fields)
			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
			defer cancel()
			exists, groupInfo, err := RsrcMgr.GetFlowGroupFromKVStore(ctx, tt.args.groupID, tt.args.cached)
			if err != nil {
				t.Errorf("%s got error but wants nil error", tt.name)
				return
			} else if exists && (groupInfo.GroupID == 0) {
				t.Errorf("%s got true and nil group info but expected not nil group info", tt.name)
				return
			} else if tt.args.groupID == 3 && exists {
				t.Errorf("%s got true but wants false", tt.name)
				return
			}
		})
	}
}