core/src/test/scala/org/apache/spark/SharedSparkContext.scala


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/*
 * 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.spark

import org.scalatest.Suite
import org.scalatest.BeforeAndAfterAll

/** Shares a local `SparkContext` between all tests in a suite and closes it at the end */
trait SharedSparkContext extends BeforeAndAfterAll { self: Suite =>

  @transient private var _sc: SparkContext = _

  def sc: SparkContext = _sc

  override def beforeAll() {
    _sc = new SparkContext("local", "test")
    super.beforeAll()
  }

  override def afterAll() {
    LocalSparkContext.stop(_sc)
    _sc = null
    super.afterAll()
  }
}