class CompositeIdGeneratorTest extends Specification {
    private final IdGenerator<?> target = Mock()
    private final CompositeIdGenerator generator = new CompositeIdGenerator('scope', target)

    def createsACompositeId() {
        def original = 12
        when:
        def id = generator.generateId()

        then:
        id != original
        id.toString() == 'scope.12'

        and: