For starters see http://www.gebish.org. You will find a popular Groovy like web testing framework. Too, they have some extra wrappers around Spock which is a popular Groovy like test specification language. If one extends the class GebReportingSpec, then they define specifications like this:

class MyPageSpec extends ScrippsReportingSpec {
    
    def "ensure header value"() {
        given:
        //do something
        
        when:
        //do something
        
        then:
        //do some assertion checks
    }
    
    def "ensure tab values"() {
        given:
        //do something
        
        when:
        //do something
        
        then:
        //do some assertion checks
    }
}

In the navigator in NetBeans they will show up as something like "$spock_feature_3_1" and "$spock_feature_3_2". In Eclipse navigator they show up like "ensure tab values", and the Eclipse editor, as far as I know, doesn't know anything specific about this geb/spock combo, but understands the general pattern and does something more useful. It seems NetBeans should do this too for such Groovy things.