func defaultHandler(req *http.Request) (interface{}, error) {
	return nil, nil
}
defaultHandler is a default HTTP request handler that returns a nil body.
package actas
import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"
	log "github.com/golang/glog"
	"github.com/google/go-cmp/cmp"
	"github.com/google/go-cmp/cmp/cmpopts"
	"golang.org/x/oauth2"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/credentials"
	"google.golang.org/grpc/status"
)
const (
	account = "fake-account@fake-consumer.iam.gserviceaccount.com"
	scope   = "https://www.googleapis.com/auth/cloud-platform"
)