@Test
public void testWorkItemDefinition_SimpleAndNull() {

    PortableWorkDefinition def1 = new PortableWorkDefinition();
    def1.setName("def1name");
    column1.setWorkItemDefinition(def1);
    column2.setWorkItemDefinition(null);
    checkSingleDiff(FIELD_WORKITEM_DEFINITION_NAME, "def1name", null, column1, column2);
}