spock - How can I test my Grails service save method? -

i've created grails service using grails create-service taskcrudservice. command created files taskcrudservice.groovy in grails-app\services , taskcrudservicespec.groovy in test\unit folder.

the method in taskcrudservice is

task save(string name) {     task task = new task()     task.name = name      task.save(flush: true, failonerror: true) } 

i wanted test method so, i've filled body of "test something" method generated grails in test class. taskcrudservicespec code:

@testfor(taskcrudservice) class taskcrudservicespec extends specification {      void "test something"() {         when:             task t = service.save('task name')         then:             assert t.name == 'task name'     } } 

but test doesn't work. when run grails test-app

java.lang.illegalstateexception: method on class [task] used outside of grails application. if running in context of test using mocking api or bootstrap grails correctly.         @ taskcrudservice.$tt__save(taskcrudservice.groovy:29)         @ taskcrudservicespec.test create(taskcrudservicespec.groovy:24) 

that looks should work, if did, it's bad test. never use unit tests testing persistence. use integration test you're using real database , not in-memory gorm implementation uses concurrenthashmap store data.