/* * 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.apache.cassandra.locator; import java.net.InetAddress; import java.util.ArrayList; import com.google.common.collect.Iterators; import org.junit.BeforeClass; import org.junit.Test; import org.junit.runner.RunWith; import static org.junit.Assert.assertEquals; import static org.apache.cassandra.Util.token; import org.apache.cassandra.OrderedJUnit4ClassRunner; import org.apache.cassandra.dht.Token; import org.apache.cassandra.locator.TokenMetadata; import org.apache.cassandra.service.StorageService; @RunWith(OrderedJUnit4ClassRunner.class) public class TokenMetadataTest { public final static String ONE = "1"; public final static String SIX = "6"; public static ArrayList<Token> RING; @BeforeClass public static void beforeClass() throws Throwable { TokenMetadata tmd = StorageService.instance.getTokenMetadata(); tmd.updateNormalToken(token(ONE), InetAddress.getByName("127.0.0.1")); tmd.updateNormalToken(token(SIX), InetAddress.getByName("127.0.0.6")); RING = tmd.sortedTokens(); } private void testRingIterator(String start, boolean includeMin, String... expected) { ArrayList<Token> actual = new ArrayList<Token>(); Iterators.addAll(actual, TokenMetadata.ringIterator(RING, token(start), includeMin)); assertEquals(actual.toString(), expected.length, actual.size()); for (int i = 0; i < expected.length; i++) assertEquals("Mismatch at index " + i + ": " + actual, token(expected[i]), actual.get(i)); } @Test public void testRingIterator() { testRingIterator("2", false, "6", "1"); testRingIterator("7", false, "1", "6"); testRingIterator("0", false, "1", "6"); testRingIterator("", false, "1", "6"); } @Test public void testRingIteratorIncludeMin() { testRingIterator("2", true, "6", "", "1"); testRingIterator("7", true, "", "1", "6"); testRingIterator("0", true, "1", "6", ""); testRingIterator("", true, "1", "6", ""); } @Test public void testRingIteratorEmptyRing() { RING.clear(); testRingIterator("2", false); } }