Hi (it is propably stupid question)

how can acquire Domain class from database in test?

class PollServiceTests extends GrailsUnitTestCase {
    Integer id = 1

    void testSomething() {
       Teacher teacher1 = Teacher.get(id)
       assert teacher1 != null
    }
}

I always get null or

No signature of method: cz.jak.Teacher.get() is applicable for argument types: (java.lang.Integer) values: [1]

thanks a lot Tom