/*
* Copyright 2010 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.tools.mapreduce.inputs;
import com.google.appengine.api.NamespaceManager;
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.tools.development.testing.LocalDatastoreServiceTestConfig;
import com.google.appengine.tools.development.testing.LocalServiceTestHelper;
import com.google.appengine.tools.mapreduce.InputReader;
import junit.framework.TestCase;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.NoSuchElementException;
/**
*/
public class DatastoreKeyInputTest extends TestCase {
static final String ENTITY_KIND_NAME = "Bob";
private final LocalServiceTestHelper helper
= new LocalServiceTestHelper(new LocalDatastoreServiceTestConfig());
private DatastoreService ds;
@Override
public void setUp() throws Exception {
super.setUp();
helper.setUp();
ds = DatastoreServiceFactory.getDatastoreService();
}
@Override
public void tearDown() throws Exception {
helper.tearDown();
super.tearDown();
}
private void populateData(int size, String namespace) {
Collection<Entity> entities = new ArrayList<>(size);
String ns = NamespaceManager.get();
try {
if (namespace != null) {
NamespaceManager.set(namespace);
}
for (int i = 0; i < size; i++) {
entities.add(new Entity(ENTITY_KIND_NAME, "key_" + i));
}
} finally {
NamespaceManager.set(ns);
}
List<Key> keys = ds.put(entities);
Collections.sort(keys);
}
public void testCreateReadersWithNamespace() throws IOException {
populateData(10, "namespace1");
DatastoreKeyInput input = new DatastoreKeyInput(ENTITY_KIND_NAME, 1, "namespace1");
InputReader<Key> reader = input.createReaders().get(0);
verifyReader(reader, 10, "namespace1");
}
private void verifyReader(InputReader<Key> reader, int size, String namespace)
throws IOException {
reader.beginShard();
reader.beginSlice();
ArrayList<Key> read = new ArrayList<>();
for (int i = 0; i < size; i++) {
Key key = reader.next();
read.add(key);
}
try {
reader.next();
fail("Expected NoSuchElementException");
} catch (NoSuchElementException expected) {
//
}
reader.endSlice();
reader.endShard();
Collections.sort(read);
for (int i = 0; i < size; i++) {
Key key = read.get(i);
assertEquals("key_" + i, key.getName());
assertEquals(namespace, key.getNamespace());
}
}
public void testCreateReaders() throws Exception {
populateData(10, null);
DatastoreKeyInput input = new DatastoreKeyInput(ENTITY_KIND_NAME, 1);
InputReader<Key> reader = input.createReaders().get(0);
verifyReader(reader, 10, "");
}
}