Cassandra Unit with scala. Not session -


i'm trying test cassandra cassandraunit. pasted test github , translate scala doesn't work.

import org.junit.rule import org.scalatest.funsuite import com.datastax.driver.core.resultset import org.cassandraunit.cassandracqlunit import org.cassandraunit.dataset.cql.classpathcqldataset  class cassandratest  extends funsuite{    @rule   val cassandracqlunit = new cassandracqlunit(new classpathcqldataset("statementswithblankendings.cql", "mykeyspace"))    test("really simple transformation") {        val session = cassandracqlunit.session       val resultset = session.execute("select * testcqltable  id='1690e8da-5bf8-49e8-9583-4dff8a570737'")       println(resultset.iterator().next().getstring("value"))      } }   java.lang.nullpointerexception thrown. java.lang.nullpointerexception     @ cassandratest$$anonfun$1.apply$mcv$sp(cassandratest.scala:21)     @ cassandratest$$anonfun$1.apply(cassandratest.scala:18)     @ cassandratest$$anonfun$1.apply(cassandratest.scala:18)     @ org.scalatest.outcomeof$class.outcomeof(outcomeof.scala:85)     @ org.scalatest.outcomeof$.outcomeof(outcomeof.scala:104)     @ org.scalatest.transformer.apply(transformer.scala:22)     @ org.scalatest.transformer.apply(transformer.scala:20)     @ org.scalatest.funsuitelike$$anon$1.apply(funsuitelike.scala:186)     @ org.scalatest.testsuite$class.withfixture(testsuite.scala:196)     @ org.scalatest.funsuite.withfixture(funsuite.scala:1560)     @ org.scalatest.funsuitelike$class.invokewithfixture$1(funsuitelike.scala:183)     @ org.scalatest.funsuitelike$$anonfun$runtest$1.apply(funsuitelike.scala:196)     @ org.scalatest.funsuitelike$$anonfun$runtest$1.apply(funsuitelike.scala:196)     @ org.scalatest.superengine.runtestimpl(engine.scala:289)     @ org.scalatest.funsuitelike$class.runtest(funsuitelike.scala:196)     @ org.scalatest.funsuite.runtest(funsuite.scala:1560)     @ org.scalatest.funsuitelike$$anonfun$runtests$1.apply(funsuitelike.scala:229)     @ org.scalatest.funsuitelike$$anonfun$runtests$1.apply(funsuitelike.scala:229)     @ org.scalatest.superengine$$anonfun$traversesubnodes$1$1.apply(engine.scala:396)     @ org.scalatest.superengine$$anonfun$traversesubnodes$1$1.apply(engine.scala:384)     @ scala.collection.immutable.list.foreach(list.scala:381)     @ org.scalatest.superengine.traversesubnodes$1(engine.scala:384)     @ org.scalatest.superengine.org$scalatest$superengine$$runtestsinbranch(engine.scala:379)     @ org.scalatest.superengine.runtestsimpl(engine.scala:461)     @ org.scalatest.funsuitelike$class.runtests(funsuitelike.scala:229)     @ org.scalatest.funsuite.runtests(funsuite.scala:1560)     @ org.scalatest.suite$class.run(suite.scala:1147)     @ org.scalatest.funsuite.org$scalatest$funsuitelike$$super$run(funsuite.scala:1560)     @ org.scalatest.funsuitelike$$anonfun$run$1.apply(funsuitelike.scala:233)     @ org.scalatest.funsuitelike$$anonfun$run$1.apply(funsuitelike.scala:233)     @ org.scalatest.superengine.runimpl(engine.scala:521)     @ org.scalatest.funsuitelike$class.run(funsuitelike.scala:233)     @ org.scalatest.funsuite.run(funsuite.scala:1560)     @ org.scalatest.tools.suiterunner.run(suiterunner.scala:45)     @ org.scalatest.tools.runner$$anonfun$dorunrunrundadorunrun$1.apply(runner.scala:1340)     @ org.scalatest.tools.runner$$anonfun$dorunrunrundadorunrun$1.apply(runner.scala:1334)     @ scala.collection.immutable.list.foreach(list.scala:381)     @ org.scalatest.tools.runner$.dorunrunrundadorunrun(runner.scala:1334)     @ org.scalatest.tools.runner$$anonfun$runoptionallywithpassfailreporter$2.apply(runner.scala:1011)     @ org.scalatest.tools.runner$$anonfun$runoptionallywithpassfailreporter$2.apply(runner.scala:1010)     @ org.scalatest.tools.runner$.withclassloaderanddispatchreporter(runner.scala:1500)     @ org.scalatest.tools.runner$.runoptionallywithpassfailreporter(runner.scala:1010)     @ org.scalatest.tools.runner$.run(runner.scala:850)     @ org.scalatest.tools.runner.run(runner.scala)     @ org.jetbrains.plugins.scala.testingsupport.scalatest.scalatestrunner.runscalatest2(scalatestrunner.java:138)     @ org.jetbrains.plugins.scala.testingsupport.scalatest.scalatestrunner.main(scalatestrunner.java:28)

session variable null don't know why. understand cassandracqlunit has cassandra server in same vm. necessary else?

you need startup server , connect. can load data in:

import com.datastax.driver.core.{cluster, session} import org.cassandraunit.cqldataloader import org.cassandraunit.dataset.cql.classpathcqldataset import org.cassandraunit.utils.embeddedcassandraserverhelper import org.scalatest.{beforeandafterall, funsuite}  class cassandratest extends funsuite   beforeandafterall {    var cluster : cluster = _   var session : session = _    override def beforeall(): unit = {     embeddedcassandraserverhelper.startembeddedcassandra(embeddedcassandraserverhelper.cassandra_rndport_yml_file)     cluster = embeddedcassandraserverhelper.getcluster()     session = cluster.connect()      val dataloader = new cqldataloader(session)     dataloader.load(new classpathcqldataset("statementswithblankendings.cql","mykeyspace"))   }    test("really simple transformation") {      val resultset = session.execute("select * mykeyspace.testcqltable  id='1690e8da-5bf8-49e8-9583-4dff8a570737'")     println(resultset.iterator().next().getstring("value"))    }  }

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