Testing
In Part 2 of this book, we took an entirely synchronous application and transformed it into an asynchronous application using events and messaging. Our application is more resilient and agile but has gained some new libraries and dependencies as a result.
Testing an asynchronous application can pose some unique challenges but remains within reach by following testing best practices. In this chapter, we will look at testing the MallBots application from the unit test level and writing executable specifications using the Gherkin language.
In this chapter, we will cover the following topics:
- Coming up with a testing strategy
- Testing the application and domain with unit tests
- Testing dependencies with integration testing
- Testing component interactions with contract tests
- Testing the application with end-to-end tests
