You need to have your data access method separated from servlet code or RPC (if GWT is used) code.
Assume that you have something like: class Customer { private Key customerId; ... } class MyDataAccessService { public void addCustomer(Customer c) { ... } and you want to test it. You can create separate project for test (and link sources with main project) or you can have test packages together with the main project. So you write your test case (assuming Junit4) public class TestCase1 { ... @Test public void testAddingCustomer() { Customer c = new Customer(); c.setCustomerId("google"); ... MyDataAccessService service = new MyDataAccessService(); service.addCustomer(c); // now test PersistenceManager pm = ... Customer c1 = pm.getObjectById(Customer.class, "google"); assertNotNull(c1); assertEquals("google",c1.getCustomerId); .. } Now you want to have this test enabled for local Google App Engine environment. Create classes us described under link and fix your test case. http://code.google.com/appengine/docs/java/howto/unittesting.html public class TestCase1 extends LocalDatastoreTestEnvironment { @Before public void setUp() { super.setUp(); } @After public void tearDown() { super.tearDown(); } @Test public void testAddingCustomer() { .. } Now you can run TestCase1 as standard Junit Test (from Eclipse) and be happy. Addtional remark: You can avoid extending your TestCase and use simple composition. class TestCase { LocalDatastoreTestEnvironment localStore = new LocalDatastoreTestEnvironment(); @Before public void setUp() { localStore.setUp(); } @After public void tearDown() { localStore.tearDown(); } Also you can change it anyway as you like and best fit to your purpose. Treat what is under link as a demo how this stuff is running, not as a dogma. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---