title: Reuse of test-Classes in other tests
body: <p>I want to make a few Tests which have a specific dependecy on each other. Because of this,
  I have one "main"-Test, which should call the other tests. Here are two example classes:</p>
  
  <pre><code>@Stepwise
  public class TestClass extends GebReportingSpec{
  NotAutomaticExecutedIT test = new NotAutomaticExecutedIT();
  
   def "anderen Test aufrufen"() {
      given:
          test."test"()
      when:
          def wert = true
      then:
          wert == true
  
   }
  
  }
  </code></pre>
  
  <p>and</p>
  
  <pre><code>@Ignore
  public class NotAutomaticExecutedIT extends GebReportingSpec {
  
   def "test"() {
      given:
          def trueness = true;
      when:
          def argument = true;
      then:
          argument != trueness;
   }
  }
  </code></pre>
  
  <p>If I run the test, i get the following exception:</p>
  
  <blockquote>
    <p>groovy.lang.MissingFieldException: No such field: $spock_sharedField__browser for class: org.codehaus.groovy.runtime.NullObject
      at geb.spock.GebSpec.getBrowser(GebSpec.groovy:40)
      at geb.spock.GebSpec.methodMissing(GebSpec.groovy:54)
      at org.gkl.kms.webapp.tests.BestellungenIT.anderen Test aufrufen(TestClass.groovy:16)</p>
  </blockquote>
  
  <p>Isn't it possible to do this?</p>