trunk/core/src/test/scala/unit/kafka/utils/UtilsTest.scala

/**
 * 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 kafka.utils

import org.apache.log4j.Logger
import org.scalatest.junit.JUnitSuite
import org.junit.Test
import org.junit.Assert._


class UtilsTest extends JUnitSuite {
  
  private val logger = Logger.getLogger(classOf[UtilsTest]) 

  @Test
  def testSwallow() {
    Utils.swallow(logger.info, throw new IllegalStateException("test"))
  }

  @Test
  def testCircularIterator() {
    val l = List(1, 2)
    val itl = Utils.circularIterator(l)
    assertEquals(1, itl.next())
    assertEquals(2, itl.next())
    assertEquals(1, itl.next())
    assertEquals(2, itl.next())
    assertFalse(itl.hasDefiniteSize)

    val s = Set(1, 2)
    val its = Utils.circularIterator(s)
    assertEquals(1, its.next())
    assertEquals(2, its.next())
    assertEquals(1, its.next())
    assertEquals(2, its.next())
    assertEquals(1, its.next())
  }

}