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LocalHighRepDatastoreTest.java
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LocalHighRepDatastoreTest.java
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/*
* Copyright 2015 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.appengine.samples;
// [START LocalHighRepDatastoreTest]
import static com.google.appengine.api.datastore.FetchOptions.Builder.withLimit;
import static org.junit.Assert.assertEquals;
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.Key;
import com.google.appengine.api.datastore.KeyFactory;
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;
public class LocalHighRepDatastoreTest extends BaseTestConfiguration {
// Maximum eventual consistency.
private final LocalServiceTestHelper helper =
new LocalServiceTestHelper(new LocalDatastoreServiceTestConfig()
.setDefaultHighRepJobPolicyUnappliedJobPercentage(100));
@Before
public void setUp() {
helper.setUp();
}
@After
public void tearDown() {
helper.tearDown();
}
@Test
public void testEventuallyConsistentGlobalQueryResult() {
DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
Key ancestor = KeyFactory.createKey("foo", 3);
ds.put(new Entity("yam", ancestor));
ds.put(new Entity("yam", ancestor));
// Global query doesn't see the data.
assertEquals(0, ds.prepare(new Query("yam")).countEntities(withLimit(10)));
// Ancestor query does see the data.
assertEquals(2, ds.prepare(new Query("yam", ancestor)).countEntities(withLimit(10)));
}
}
// [END LocalHighRepDatastoreTest]