| /* |
| * 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.gearpump.streaming.partitioner |
| |
| import org.apache.gearpump.Message |
| import org.scalatest.{FlatSpec, Matchers} |
| |
| class PartitionerSpec extends FlatSpec with Matchers { |
| val NUM = 10 |
| |
| "HashPartitioner" should "hash same key to same slots" in { |
| val partitioner = new HashPartitioner |
| |
| val data = new Array[Byte](1000) |
| (new java.util.Random()).nextBytes(data) |
| val msg = Message(data) |
| |
| val partition = partitioner.getPartition(msg, NUM) |
| assert(partition >= 0 && partition < NUM, "Partition Id should be >= 0") |
| |
| assert(partition == partitioner.getPartition(msg, NUM), "multiple run should return" + |
| "consistent result") |
| } |
| |
| "ShufflePartitioner" should "hash same key randomly" in { |
| val partitioner = new ShufflePartitioner |
| |
| val data = new Array[Byte](1000) |
| (new java.util.Random()).nextBytes(data) |
| val msg = Message(data) |
| |
| val partition = partitioner.getPartition(msg, NUM) |
| assert(partition >= 0 && partition < NUM, "Partition Id should be >= 0") |
| |
| assert(partition != partitioner.getPartition(msg, NUM), "multiple run should return" + |
| "consistent result") |
| } |
| |
| "BroadcastPartitioner" should "return all partitions" in { |
| val partitioner = new BroadcastPartitioner |
| |
| val data = new Array[Byte](1000) |
| (new java.util.Random()).nextBytes(data) |
| val msg = Message(data) |
| val partitions = partitioner.getPartitions(msg, NUM) |
| |
| partitions should contain theSameElementsAs 0.until(NUM) |
| } |
| |
| |
| "ShuffleGroupingPartitioner" should "hash same key randomly" in { |
| val partitioner = new ShuffleGroupingPartitioner |
| |
| val data = new Array[Byte](1000) |
| (new java.util.Random()).nextBytes(data) |
| val msg = Message(data) |
| |
| val partition = partitioner.getPartition(msg, NUM) |
| assert(partition >= 0 && partition < NUM, "Partition Id should be >= 0") |
| |
| assert(partition != partitioner.getPartition(msg, NUM), "multiple run should return" + |
| "consistent result") |
| } |
| } |