Test-for-data-storage

import com.google.appengine.api.datastore.DatastoreService; import com.google.appengine.api.datastore.DatastoreServiceFactory; import com.google.appengine.api.datastore.Entity; import com.google.appengine.api.datastore.Query; import com.google.appengine.tools.development.testing.LocalDatastoreServiceTestConfig; import com.google.appengine.tools.development.testing.LocalServiceTestHelper;

import org.junit.After; import org.junit.Before; import org.junit.Test; import static org.junit.Assert.*;

public class LocalDatastoreTest {

private final LocalServiceTestHelper helper =
    new LocalServiceTestHelper(new LocalDatastoreServiceTestConfig());

@Before
public void setUp() {
    helper.setUp();
}

@After
public void tearDown() {
    helper.tearDown();
}

// run this test twice to prove we're not leaking any state across tests
private void doTest() {
    DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
    assertEquals(0, ds.prepare(new Query("yam")).countEntities(withLimit(10)));
    ds.put(new Entity("yam"));
    ds.put(new Entity("yam"));
    assertEquals(2, ds.prepare(new Query("yam")).countEntities(withLimit(10)));
}

@Test
public void testInsert1() {
    doTest();
}

@Test
public void testInsert2() {
    doTest();
}

}