### Question:
EOModelHelper { public Iterator modelNames() { return entityClassIndex.keySet().iterator(); } EOModelHelper(URL modelUrl); String javaTypeForEOModelerType(String valueClassName, String valueType); DataMap getDataMap(); URL getModelUrl(); Iterator modelNames(); List modelNamesAsList(); Map getPrototypeAttributeMapFor(String aPrototypeAttributeName); Map entityPListMap(String entityName); Iterator queryNames(String entityName); Map queryPListMap(String entityName, String queryName); String entityClass(String entityName, boolean getClientClass);  }### Answer:
@Test public void testModelNames() throws Exception { Iterator names = helper.modelNames(); List list = new ArrayList(); while (names.hasNext()) { list.add(names.next()); } assertEquals(8, list.size()); assertTrue(list.contains("Artist")); assertTrue(list.contains("Painting")); assertTrue(list.contains("ExhibitType")); }