/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.waveprotocol.wave.client.wavepanel.view;
import junit.framework.TestCase;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Random;
public class ModelIdMapperImplTest extends TestCase {
public void testMapping() throws Exception {
ModelIdMapperImpl impl = ModelIdMapperImpl.create(null, "empty");
verifyMapper(impl);
}
private void verifyMapper(ModelIdMapperImpl impl) {
HashSet<String> shortIdSet = new HashSet<String>();
HashSet<String> longIdSet = new HashSet<String>();
ArrayList<String> shortIds = new ArrayList<String>();
ArrayList<String> longIds = new ArrayList<String>();
Random random = new Random();
// ensure unique
while (longIdSet.size() < 100) {
String longId = Integer.toBinaryString(random.nextInt());
while (longIdSet.contains(longId)) {
longId = Integer.toBinaryString(random.nextInt());
}
longIdSet.add(longId);
String shortId = impl.shorten(longId);
assertFalse("Short Id is already in the set " + shortId + " set " + shortIdSet, shortIdSet
.contains(shortId));
shortIdSet.add(shortId);
shortIds.add(shortId);
longIds.add(longId);
}
for (int i = 0; i < shortIds.size(); i++) {
assertEquals("The shortId returned for repeated longId is not the same", shortIds.get(i),
impl.shorten(longIds.get(i)));
assertEquals("Restoring of the shortIds is not the same as long id", longIds.get(i), impl
.restoreId(shortIds.get(i)));
}
}
public void testCorrectForm() {
ModelIdMapperImpl impl = new ModelIdMapperImpl(null, "empty", 42);
assertEquals("Next id not of expected form", "empty42", impl.shorten("1234"));
verifyMapper(impl);
}
}