func unsetVars(t *testing.T) {
	t.Helper()
	os.Unsetenv("GOOGLE_CLOUD_PROJECT")
	os.Unsetenv("GAE_SERVICE")
	os.Unsetenv("GAE_VERSION")
}
unsetVars ensures that none of the required environment variables are set.
package gaelog
import (
	"fmt"
	"net/http/httptest"
	"os"
	"testing"
	"github.com/kylelemons/godebug/pretty"
	"google.golang.org/genproto/googleapis/api/monitoredres"
)
const (
	testProjectID = "my-project"
	testServiceID = "my-service"
	testVersionID = "my-version"
)
func setVars(t *testing.T) {
	t.Helper()
	os.Setenv("GOOGLE_CLOUD_PROJECT", testProjectID)
	os.Setenv("GAE_SERVICE", testServiceID)
	os.Setenv("GAE_VERSION", testVersionID)
}