| /* |
| * 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 |
| |
| import org.apache.gearpump.streaming.partitioner.PartitionerDescription |
| import org.apache.gearpump.streaming.task.TaskId |
| import org.apache.gearpump.util.Graph |
| import org.apache.gearpump.util.Graph.Node |
| import org.scalacheck.Gen |
| import org.scalatest.prop.PropertyChecks |
| import org.scalatest.{Matchers, PropSpec} |
| |
| class DAGSpec extends PropSpec with PropertyChecks with Matchers { |
| |
| val parallelismGen = Gen.chooseNum[Int](1, 100) |
| |
| property("DAG should be built correctly for a single task") { |
| forAll(parallelismGen) { (parallelism: Int) => |
| val task = ProcessorDescription(id = 0, taskClass = "task", parallelism = parallelism) |
| val graph = Graph[ProcessorDescription, PartitionerDescription](task) |
| val dag = DAG(graph) |
| dag.processors.size shouldBe 1 |
| assert(dag.taskCount == parallelism) |
| dag.tasks.sortBy(_.index) shouldBe (0 until parallelism).map(index => TaskId(0, index)) |
| dag.graph.getEdges shouldBe empty |
| } |
| } |
| } |