Unit test of grails filter with grails hibernate filter plugin

I have a simple filter and its unit test case as in the link(Unit Testing Filters) and it working fine.

Now I have added Hibernate Filter plugin in the application. And in a domain I have a parametric hibernate filter:

class Author {

    Book book

    static hibernateFilters = {
        bookFilter(condition: ':bookId = book_id', types: 'long')
    }
}

due to some reason I have enabled this hibernate filter in grails filter:

class CancellingFilters {
  def filters = {
    all(controller:"simple", action:"list") {
      before = {
        Author.enableHibernateFilter('bookFilter').setParameter('bookId', session.bookId)
        redirect(controller:"book")
        return false
      }
    }
  }
}

this works fine while run-app. But my test of CancellingFilters failing with following error:

|  groovy.lang.MissingMethodException: No signature of method: com.mkb.Author.enableHibernateFilter() is applicable for argument types: (java.lang.String) values: [bookFilter]
    at org.grails.datastore.gorm.GormStaticApi.methodMissing(GormStaticApi.groovy:91)
    at org.grails.datastore.gorm.internal.StaticMethodInvokingClosure.call(StaticMethodInvokingClosure.groovy:32)
    at mkb.CancellingFilters.closure1_closure2_closure3(CancellingFilters.groovy:5)
    at grails.test.mixin.web.FiltersUnitTestMixin.withFilters(FiltersUnitTestMixin.groovy:119)

I have no idea how can I fix this issue. I tried with metaClass but no luck.

How can I fix this error to pass the test case? Is this possible to test this filter? Please suggest.