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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.sql.test
import org.scalatest.BeforeAndAfterEach
import org.apache.spark.{DebugFilesystem, SparkConf}
import org.apache.spark.sql.{SparkSession, SQLContext}
import org.apache.spark.sql.internal.SQLConf
/**
* Helper trait for SQL test suites where all tests share a single [[TestSparkSession]].
*/
trait SharedSQLContext extends SQLTestUtils with BeforeAndAfterEach {
protected val sparkConf = new SparkConf()
/**
* The [[TestSparkSession]] to use for all tests in this suite.
*
* By default, the underlying [[org.apache.spark.SparkContext]] will be run in local
* mode with the default test configurations.
*/
private var _spark: TestSparkSession = null
/**
* The [[TestSparkSession]] to use for all tests in this suite.
*/
protected implicit def spark: SparkSession = _spark
/**
* The [[TestSQLContext]] to use for all tests in this suite.
*/
protected implicit def sqlContext: SQLContext = _spark.sqlContext
protected def createSparkSession: TestSparkSession = {
new TestSparkSession(
sparkConf.set("spark.hadoop.fs.file.impl", classOf[DebugFilesystem].getName))
}
/**
* Initialize the [[TestSparkSession]].
*/
protected override def beforeAll(): Unit = {
SparkSession.sqlListener.set(null)
if (_spark == null) {
_spark = createSparkSession
}
// Ensure we have initialized the context before calling parent code
super.beforeAll()
}
/**
* Stop the underlying [[org.apache.spark.SparkContext]], if any.
*/
protected override def afterAll(): Unit = {
super.afterAll()
if (_spark != null) {
_spark.stop()
_spark = null
}
}
protected override def beforeEach(): Unit = {
super.beforeEach()
DebugFilesystem.clearOpenStreams()
}
protected override def afterEach(): Unit = {
super.afterEach()
DebugFilesystem.assertNoOpenStreams()
}
}
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