Embedded web server in pure Swift for iOS UI testing

https://envoy.engineering/embedded-web-server-for-ios-ui-testing-8ff3cef513df#.gbuaq258p

by victorlin • 10 years ago

6 1 10 years ago

I like this approach, and I use it a lot in my Objective-C to swift conversions. For new code (or legacy apps without testing infrastructure) I tend to approach testing first from the top down with Functional tests (uix button pressing) and defer the majority of unit testing until something is broke. If I find a bug in a subsystem than I almost always but a unit test around it. I hate the idea of fixing something twice.

The mocking component is a critical component in this. My networking constructors dependency inject the network config ( PRODUCTION, STAGE, MOCK ). Over the past few months I have been trying different strategies on the mocking. I have done it with local embedded JSON files for the mock network endpoint and also localhost swift server, serving the JSON mocking file overt the network. I like testing across the wire instead of responding with mock data from inside the app because ( as was pointed out in the article ) the functional user experience is often in response to the network response error and response duration.

In the past I have rolled my own swift mocking server, but I will give Embassy a try over the next week. Its always nice to have this type of thing in your developer "tool belt" for future projects.

Thanks for the contribution envoy.

Embedded web server in pure Swift for iOS UI testing

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