How to use Test Jars for spark in SBT - apache-spark

Question

I am creating Spark 2.0.1 project and want to use Spark test-jars in my SBT Project.
build.sbt:
scalaVersion := "2.11.0"
val sparkVersion = "2.0.1"
libraryDependencies ++= Seq(
"org.apache.spark" %% "spark-core" % sparkVersion % "compile",
"org.apache.spark" %% "spark-sql" % sparkVersion % "compile",
"org.scalatest" %% "scalatest" % "2.2.6" % "test",
"org.apache.spark" %% "spark-core" % sparkVersion % "test" classifier "tests",
"org.apache.spark" %% "spark-sql" % sparkVersion % "test" classifier "tests",
"org.apache.spark" %% "spark-catalyst" % sparkVersion % "test" classifier "tests"
)
My Test code:
import org.apache.spark.sql.DataFrame
import org.apache.spark.sql.functions._
import org.apache.spark.sql.test.SharedSQLContext
class LoaderTest extends org.apache.spark.sql.QueryTest with SharedSQLContext {
import testImplicits._
test("function current_date") {
val df1 = Seq((1, 2), (3, 1)).toDF("a", "b")
// Rest of test code and assertion using checkAnswer method
}
}
But when i try to run test using:
sbt clean test
It get following errors:
[info] Compiling 1 Scala source to /tstprg/test/target/scala-2.11/test-classes...
[error] bad symbolic reference to org.apache.spark.sql.catalyst.expressions.PredicateHelper encountered in class file 'PlanTest.class'.
[error] Cannot access type PredicateHelper in package org.apache.spark.sql.catalyst.expressions. The current classpath may be
[error] missing a definition for org.apache.spark.sql.catalyst.expressions.PredicateHelper, or PlanTest.class may have been compiled against a version that's
[error] incompatible with the one found on the current classpath.
[error] /tstprg/test/src/test/scala/facts/LoaderTest.scala:7: illegal inheritance;
[error] self-type facts.LoaderTest does not conform to org.apache.spark.sql.QueryTest's selftype org.apache.spark.sql.QueryTest
[error] class LoaderTest extends org.apache.spark.sql.QueryTest with SharedSQLContext {
[error] ^
[error] /tstprg/test/src/test/scala/facts/LoaderTest.scala:7: illegal inheritance;
[error] self-type facts.LoaderTest does not conform to org.apache.spark.sql.test.SharedSQLContext's selftype org.apache.spark.sql.test.SharedSQLContext
[error] class LoaderTest extends org.apache.spark.sql.QueryTest with SharedSQLContext {
[error] ^
[error] bad symbolic reference to org.apache.spark.sql.Encoder encountered in class file 'SQLImplicits.class'.
[error] Cannot access type Encoder in package org.apache.spark.sql. The current classpath may be
[error] missing a definition for org.apache.spark.sql.Encoder, or SQLImplicits.class may have been compiled against a version that's
[error] incompatible with the one found on the current classpath.
[error] /tstprg/test/src/test/scala/facts/LoaderTest.scala:11: bad symbolic reference to org.apache.spark.sql.catalyst.plans.logical encountered in class file 'SQLTestUtils.class'.
[error] Cannot access term logical in package org.apache.spark.sql.catalyst.plans. The current classpath may be
[error] missing a definition for org.apache.spark.sql.catalyst.plans.logical, or SQLTestUtils.class may have been compiled against a version that's
[error] incompatible with the one found on the current classpath.
[error] val df1 = Seq((1, 2), (3, 1)).toDF("a", "b")
[error] ^
[error] 5 errors found
[error] (test:compileIncremental) Compilation failed
Can anybody who tried using test-jars of spark to unit test using SBT help what i am missing?
Note: This test works fine when I run through IntelliJ IDE.

Answer 1

Try to use the scope as mentioned below
version := "0.1"
scalaVersion := "2.11.11"
val sparkVersion = "2.3.1"
libraryDependencies ++= Seq(
"org.apache.spark" %% "spark-core" % sparkVersion % Provided,
"org.apache.spark" %% "spark-core" % sparkVersion % Test classifier "tests",
"org.apache.spark" %% "spark-core" % sparkVersion % Test classifier "test-sources",
"org.apache.spark" %% "spark-sql" % sparkVersion % Provided,
"org.apache.spark" %% "spark-sql" % sparkVersion % Test classifier "tests",
"org.apache.spark" %% "spark-sql" % sparkVersion % Test classifier "test-sources",
"org.apache.spark" %% "spark-catalyst" % sparkVersion % Test classifier "tests",
"org.apache.spark" %% "spark-catalyst" % sparkVersion % Test classifier "test-sources",
"com.typesafe.scala-logging" %% "scala-logging" % "3.9.0",
"org.scalatest" %% "scalatest" % "3.0.4" % "test",
"org.typelevel" %% "cats-core" % "1.1.0",
"org.typelevel" %% "cats-effect" % "1.0.0-RC2",
"org.apache.spark" %% "spark-streaming" % sparkVersion % Provided,
"org.apache.spark" %% "spark-sql-kafka-0-10" % sparkVersion % Provided exclude ("net.jpountz.lz4", "lz4"),
"com.pusher" % "pusher-java-client" % "1.8.0") ```

Answer 2

Try changing scope of your dependencies marked as test like below
scalaVersion := "2.11.0"
val sparkVersion = "2.0.1"
libraryDependencies ++= Seq(
"org.apache.spark" %% "spark-core" % sparkVersion,
"org.apache.spark" %% "spark-sql" % sparkVersion,
"org.scalatest" %% "scalatest" % "2.2.6",
"org.apache.spark" %% "spark-core" % sparkVersion ,
"org.apache.spark" %% "spark-sql" % sparkVersion,
"org.apache.spark" %% "spark-catalyst" % sparkVersion
)
or adding "compile".