You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: store_test.go
    path of file: ./repos/docker-ce/components/engine/libnetwork
    
    the code of the file until where you have to start completion: package libnetwork

import (
	"fmt"
	"os"
	"testing"

	"github.com/docker/docker/libnetwork/config"
	"github.com/docker/docker/libnetwork/datastore"
	"github.com/docker/docker/libnetwork/netlab
    
func testLocalBackend(t *testing.T, provider, url string, storeConfig *store.Config) {
	cfgOptions := []config.Option{}
	cfgOptions = append(cfgOptions, config.OptionLocalKVProvider(provider))
	cfgOptions = append(cfgOptions, config.OptionLocalKVProviderURL(url))
	cfgOptions = append(cfgOptions, config.OptionLocalKVProviderConfig(storeConfig))

	driverOptions := options.Generic{}
	genericOption := make(map[string]interface{})
	genericOption[netlabel.GenericData] = driverOptions
	cfgOptions = append(cfgOptions, config.OptionDriverConfig("host", genericOption))

	ctrl, err := New(cfgOptions...)
	if err != nil {
		t.Fatalf("Error new controller: %v", err)
	}
	nw, err := ctrl.NewNetwork("host", "host", "")
	if err != nil {
		t.Fatalf("Error creating default \"host\" network: %v", err)
	}
	ep, err := nw.CreateEndpoint("newendpoint", []EndpointOption{}...)
	if err != nil {
		t.Fatalf("Error creating endpoint: %v", err)
	}
	store := ctrl.(*controller).getStore(datastore.LocalScope).KVStore()
	if exists, err := store.Exists(datastore.Key(datastore.NetworkKeyPrefix, nw.ID())); !exists || err != nil {
		t.Fatalf("Network key should have been created.")
	}
	if exists, err := store.Exists(datastore.Key([]string{datastore.EndpointKeyPrefix, nw.ID(), ep.ID()}...)); !exists || err != nil {
		t.Fatalf("Endpoint key should have been created.")
	}
	store.Close()

	// test restore of local store
	ctrl, err = New(cfgOptions...)
	if err != nil {
		t.Fatalf("Error creating controller: %v", err)
	}
	if _, err = ctrl.NetworkByID(nw.ID()); err != nil {
		t.Fatalf("Error getting network %v", err)
	}
}