Grails wrapped exception handling test

ExceptionCausingController.groovy

package wrapped.exception

class ExceptionCausingController {
    def wrappingService

    def index() {
        wrappingService.serviceMethod()
    }
}

NestedException.groovy

package wrapped.exception

/**
 * @author: rmorrise
 */
class NestedException extends RuntimeException {
    NestedException(def message) {
        super(message)
    }
}

NestedService.groovy

package wrapped.exception

import grails.transaction.Transactional

@Transactional
class NestedService {

    def serviceMethod() {
        throw new NestedException("Nested error")
    }
}

WrappingException.groovy

package wrapped.exception

/**
 * @author: rmorrise
 */
class WrappingException extends RuntimeException {
    WrappingException(String message, Throwable cause) {
        super(message, cause)
    }
}

WrappingService.groovy

package wrapped.exception

import grails.transaction.Transactional

@Transactional
class WrappingService {
    def nestedService

    def serviceMethod() {
        try {
            nestedService.serviceMethod()
        }
        catch (NestedException e) {
            throw new WrappingException("Error called nested service from wrapped service: ${e.message}", e)
        }
    }
}