So I set up my first test suite in IntelliJ IDEA to test out some Scala code.
To run unit tests, I used the FunSuite package in ScalaTest.
 I modified the build.sbt to include the line:
libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.0" % "test"
I reloaded the project. However, for the changes to take effect I had to terminate the running sbt prompt and open a new one.
 I did not use junit