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Event-Driven Architecture in Golang
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The final form of testing we will cover is end-to-end (E2E) testing. E2E testing will encompass the entire application, including third-party services, and have nothing replaced with any test doubles. The tests should cover all of the processes in the application, which could result in very large tests that take a long time to complete:
Figure 10.11 – The scope of an end-to-end test
E2E testing takes many forms, and the one we will be using is a features-based approach. We will use Gherkin, introduced in Chapter 3, Design and Planning, to write plain text scenarios that should cover all essential flows throughout the application.
You can do behavior-driven development (BDD) without also doing E2E testing, and vice versa. These two are sometimes confused with each other or it’s thought that they are the same. BDD, as a practice, can be used at all...