/* * Copyright (2020) The Delta Lake Project Authors. * * Licensed 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.delta.util import org.apache.spark.sql.{QueryTest, SparkSession} import org.apache.spark.sql.test.SharedSparkSession class DatasetRefCacheSuite extends QueryTest with SharedSparkSession { test("should create a new Dataset when the active session is changed") { val cache = new DatasetRefCache(() => spark.range(1, 10) ) val ref = cache.get // Should reuse `Dataset` when the active session is the same assert(ref eq cache.get) SparkSession.setActiveSession(spark.newSession()) // Should create a new `Dataset` when the active session is changed assert(ref ne cache.get) } }