long-ride-alerts/src/test/scala/org/apache/flink/training/exercises/longrides/scala/LongRidesIntegrationTest.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.flink.training.exercises.longrides.scala

import org.apache.flink.api.common.JobExecutionResult
import org.apache.flink.streaming.api.functions.source.SourceFunction
import org.apache.flink.training.exercises.common.datatypes.TaxiRide
import org.apache.flink.training.exercises.longrides
import org.apache.flink.training.exercises.testing.{ComposedPipeline, ExecutablePipeline, TestSink}
import org.apache.flink.training.solutions.longrides.scala.LongRidesSolution

/** The Scala tests extend the Java tests by overriding the results() method
  * to use the Scala implementations of the exercise and solution.
  */
class LongRidesIntegrationTest extends longrides.LongRidesIntegrationTest {

  @throws[Exception]
  override def results(source: SourceFunction[TaxiRide]): java.util.List[java.lang.Long] = {
    val exercise: ExecutablePipeline[TaxiRide, Long] =
      (source: SourceFunction[TaxiRide], sink: TestSink[Long]) =>
        new LongRidesExercise.LongRidesJob(source, sink).execute()

    val solution: ExecutablePipeline[TaxiRide, Long] =
      (source: SourceFunction[TaxiRide], sink: TestSink[Long]) =>
        new LongRidesSolution.LongRidesJob(source, sink).execute()

    def longRidesPipeline: ComposedPipeline[TaxiRide, Long] =
      new ComposedPipeline[TaxiRide, Long](exercise, solution)

    val sink: TestSink[Long] = new TestSink[Long]
    val jobResult: JobExecutionResult = longRidesPipeline.execute(source, sink)
    val results = sink.getResults(jobResult)

    results.asInstanceOf[java.util.List[java.lang.Long]]
  }

}