@Test
 public void location_contextual_text_does_not_contain_first_entry_text_after_being_left() {
   Location l = createLocation();
   l.setTextForFirstEntry("first entry");
   l.exited();
   assertEquals("", l.contextualText());
 }
 @Test
 public void location_contextual_text_contains_first_entry_text() {
   Location l = createLocation();
   l.setTextForFirstEntry("first entry");
   assertEquals("first entry", l.contextualText());
 }