Doing something before or after all Scalatest tests

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The intended way to do this is to use nested suites. Suite has a nestedSuites method that returns an IndexedSeq[Suite] (in 2.0, in 1.9.1 it was a List[Suite]). Suite also has a runNestedSuites method that is responsible for executing any nested suites. By default runNestedSuites calls nestedSuites, and on each returned Suite either invokes run directly, or if a Distributor is passed, puts the nested suites in the distributor so that they can be run in parallel.

So what you really probably want to do is make Foo and Bar into classes, and return instances of them from the nestedSuites method of EndpointTests. There’s a class that makes that easy called Suites. Here’s an example of its use:

import org.scalatest._
import matchers.MustMatchers

class Foo extends FunSpec with MustMatchers {
  describe("Message here...") {
    it("Must do something") {  }
    it("Must be ok") {  }
  }
}

class Bar extends FunSpec with MustMatchers {
  describe("Hello you...") {
    it("One more!") {  }
  }
}

class EndpointTests extends Suites(new Foo, new Bar) with BeforeAndAfterAll {

  override def beforeAll(configMap: Map[String, Any]) {
    println("Before!")  // start up your web server or whatever
  }     

  override def afterAll(configMap: Map[String, Any]) {
    println("After!")  // shut down the web server
  }         
}

One potential problem, though, is that if you are using discovery to find Suites to run, all three of EndpointTests, Foo, and Bar will be discovered. In ScalaTest 2.0 you can annotate Foo and Bar with @DoNotDiscover, and ScalaTest’s Runner will not discover them. But sbt still will. We are currently enhancing sbt so that it passes over otherwise discoverable Suites that are annotated with DoNotDiscover, but this will be in sbt 0.13, which isn’t out yet. In the meantime you can get sbt to ignore them by adding an unused constructor parameter to Foo and Bar.

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