Scala Reactive Programming

Unit testing Akka Streams

In this section, we will discuss how to unit test Akka Streams, using Akka Toolkit's testing modules.

As we discussed in the previous section, like the  actor-testkit  module for Akka's Actors, the  akka-stream-testkit  module is useful for testing the components of the Akka Stream's API. However, we can test Akka Stream's components, using the  actor-testkit  module, too.

As we discussed in Chapter 7, Working with Reactive Streams, Akka Streams have mainly the following three components:

• Source
• Flow
• Sink

We are going to unit test these three components in the coming sections. Please refer to this GitHub repository for the next two sub-sections: https://github.com/rposa-srp-book/srp-book-examples/tree/master/Chapter-7/akka-streams-scala-helloworld-app ...