streaming/src/test/scala/org/apache/gearpump/streaming/dsl/partitioner/GroupByPartitionerSpec.scala

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 * to you under the Apache License, Version 2.0 (the
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.gearpump.streaming.dsl.partitioner

import java.time.Duration

import org.scalatest.{BeforeAndAfterAll, FlatSpec, Matchers}
import org.apache.gearpump.Message
import org.apache.gearpump.streaming.dsl.partitioner.GroupByPartitionerSpec.People
import org.apache.gearpump.streaming.dsl.window.api.{FixedWindows, GroupByFn}
import org.apache.gearpump.streaming.dsl.window.impl.{GroupAlsoByWindow, WindowAndGroup}

class GroupByPartitionerSpec extends FlatSpec with Matchers with BeforeAndAfterAll {

  it should "group by message payload and window" in {
    val mark = People("Mark", "male")
    val tom = People("Tom", "male")
    val michelle = People("Michelle", "female")

    val partitionNum = 10
    val groupByFn: GroupByFn[People, List[WindowAndGroup[String]]] =
      GroupAlsoByWindow[People, String](_.gender,
        FixedWindows.apply[People](Duration.ofMillis(5)))
    val groupBy = new GroupByPartitioner[People, List[WindowAndGroup[String]]](groupByFn)
    groupBy.getPartition(Message(mark, 1L), partitionNum) shouldBe
      groupBy.getPartition(Message(tom, 2L), partitionNum)

    groupBy.getPartition(Message(mark, 1L), partitionNum) should not be
      groupBy.getPartition(Message(tom, 6L), partitionNum)

    groupBy.getPartition(Message(mark, 2L), partitionNum) should not be
      groupBy.getPartition(Message(michelle, 3L), partitionNum)
  }
}

object GroupByPartitionerSpec {
  case class People(name: String, gender: String)
}