SleepServerTest.java

/**
 * Copyright 2009 the original author or authors.
 *
 * 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 net.sf.katta.node;

import net.sf.katta.AbstractTest;
import net.sf.katta.util.SleepServer;

import org.apache.log4j.Logger;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

/**
 * Test for {@link SleepServer}.
 */
public class SleepServerTest extends AbstractTest {

  @SuppressWarnings("unused")
  private static Logger LOG = Logger.getLogger(SleepServerTest.class);

  @Test
  public void testNoSleep() throws Exception {
    SleepServer server = new SleepServer();
    long start = System.currentTimeMillis();
    server.sleep(0, 0, null);
    long time = System.currentTimeMillis() - start;
    assertTrue(time < 10);
  }

  @Test
  public void testSleep() throws Exception {
    SleepServer server = new SleepServer();
    long start = System.currentTimeMillis();
    server.sleep(100, 0, null);
    long time = System.currentTimeMillis() - start;
    assertTrue("took " + time, time >= 100);
  }

  @Test
  public void testVariation() throws IllegalArgumentException {
    SleepServer server = new SleepServer();
    long min = Integer.MAX_VALUE;
    long max = -1;
    for (int i = 0; i < 200; i++) {
      long n = checkTime(server);
      max = Math.max(n, max);
      min = Math.min(n, min);
    }
    assertTrue(max - min >= 9);
  }

  private long checkTime(SleepServer server) throws IllegalArgumentException {
    long start = System.currentTimeMillis();
    server.sleep(10, 5, null);
    return System.currentTimeMillis() - start;
  }

  @Test
  public void testShards() throws IllegalArgumentException {
    SleepServer server = new SleepServer();
    server.init("sleepy", newNodeConfiguration());
    try {
      server.sleep(0L, 0, new String[] { "not-found" });
      fail("Should have failed");
    } catch (IllegalArgumentException e) {
      assertEquals("Node sleepy invalid shards: not-found", e.getMessage());
    }
    server.addShard("s1", null);
    server.sleep(0L, 0, new String[] { "s1" });
    try {
      server.sleep(0L, 0, new String[] { "s1", "s2" });
    } catch (IllegalArgumentException e) {
      assertEquals("Node sleepy invalid shards: s2", e.getMessage());
    }
    server.addShard("s2", null);
    server.sleep(0L, 0, new String[] { "s1", "s2" });
  }

}