Running Java JUnit tests with SBT

This is sample configuration to run JUnit tests with SBT

built.sbt

// Project name (artifact name in Maven)
name := " System Tests"
	
version := "1.0-SNAPSHOT"

description := " System test project"
	
// This forbids including Scala related libraries into the dependency
autoScalaLibrary := false
	
// http://mvnrepository.com/artifact/junit/junit
libraryDependencies += "junit" % "junit" % "4.12"
	
libraryDependencies += "com.novocode" % "junit-interface" % "0.10" % "test"
	
//docs https://github.com/sbt/junit-interface
testOptions += Tests.Argument(TestFrameworks.JUnit, --tests=<REGEXPS>)

Important part is to add and configure junit-interface which allows us to run junits from sbt.

source

I also use custom script with some configuration parameters to run sbt jar that is uploaded into the project

java -Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=384M -jar `dirname $0`/sbt-launch.jar "$@"

and then I can execute clean run of tests

./sbt clean compile test

Here’s sample project whit junit tests and sbt.