Grails 2.4.4 Spock Testing - Role wise Controller actions testing

I am using spock for may application testing and using Grails 2.4.4. I have done domain, controller, and service unit testing. But in controller sections I am stuck with the role wise access. For authentication I am using Spring Security Core Plugin. Below are my sample code.

@Secured(["IS_AUTHENTICATED_FULLY"])
def index(Integer max) {

}

@Secured(["ROLE_A","ROLE_B"])
def create() {
    respond new DomainName(params)
}

@Transactional
@Secured(["ROLE_A","ROLE_B"])
def save(DomainName DomainNameInstance) {
}

How do I test that only the user with ROLE_A and ROLE_B can create and save and other cannot? Also I do I check the user is IS_AUTHENTICATED_FULLY to access index action ?